World of Ham Radio 1997/WOHR97_AmSoft_(1997-02-01).iso/usenets/1996_06/_homebre.txt

Text File | 1997-02-01 | 378KB | 9,473 lines

The World of Ham Radio CD-ROM



From [e-mail] Wed Jun 05 20:36:49 1996
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: 10 to 30 hz White Noise Generator
Date: Sun, 02 Jun 96 01:26:29 GMT
Message-ID: <4oquss$[e-mail]>
References: <[e-mail]> <4ol3rm$[e-mail]> <4olase$[e-mail]>

   [e-mail] (TIEMANN BRUCE) wrote:

>Another possibility is to use a broad-spectrum noise generator,
>and then put it through some active bandpass filters.

The usefulness of this approach will depend on A) how abruptly
the noise energy must end at 10 & 30 Hz, and B) how accurately
the energy between 10 & 30 Hz must comply with the technical
definition of white noise.

It would be interesting to know more about the purpose of
generating this particular "signal".

73,
Jack  WB3U


From [e-mail] Wed Jun 05 20:36:50 1996
From: [e-mail] (Kevin  AstirCS "1U"   KO0B)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: A radio link between computers?
Date: Tue, 04 Jun 1996 15:11:44 -0700 (PDT)
Message-ID: <4p28o6$[e-mail]>
References: <Billy.28.0011F704@don't.bother.sending>


I seem to recall a 10 Mbps + voice microwave link from the ARRL
handbook.

It used two of the pretty cheap gunplexers, and was full duplex.

Seemed like they had an ECL feed .

Given that much, you still have to add a protocol layer, and software
to support it.  Maybe you can make tcp/ip work....I don't know much
about that, except enogh to have great respect for those who do!

They had snow-saucers for dishes, but at half mile, I suspect the
horns alone would have sufficent gain.

I've had bad luck running modems over anyuthing other than tel-co
circuits...they are pretty much tweaked for that service.

GL, 73
ko0b



From [e-mail] Wed Jun 05 20:36:51 1996
From: [e-mail] (K1EL)
Newsgroups: rec.radio.amateur.homebrew
Subject: AM Modulation Scheme ??
Date: 1 Jun 1996 03:37:06 -0400
Message-ID: <4oorv2$[e-mail]>
Reply-To: [e-mail] (K1EL)

I have a military AM modulation transformer that I would like to use in a
low power AM transmitter I am building (25 watts). The question is: The
transformer has a single center tapped coil and is intended for push pull
modulation. One leg of the coil has a much higher current rating than the
other (70 ma vs 150ma) this is the end that would be connected to the
plate of the final amplifier stage of the transmitter. Does anybody have
any schematics for this type of modulation. I suppose it is similar to a
Heising configuration except that the modulation drive is double-ended
rather than single.

Regards Steve K1EL


From [e-mail] Wed Jun 05 20:36:52 1996
From: [e-mail] (Dave)
Newsgroups: rec.radio.amateur.homebrew
Subject: Anyone converted a FT101e to solid state finals?
Date: Sun, 02 Jun 1996 00:41:43 GMT
Message-ID: <4oqnvc$[e-mail]>

Hello, I am interested in converting an FT101e over to solid state
finals. I vaguely recall a kit for this. Has anyone done this
modification? What type of succes was had?
-Dave KB7SVP



From [e-mail] Wed Jun 05 20:36:52 1996
From: Cecil Moore <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: design for 1/2" catv hardline z matching lines?
Date: 1 Jun 1996 20:42:01 -0700
Message-ID: <4or2i9$[e-mail]>
References: <4od01k$[e-mail]>

:    Does anyone on the net have a url for a sound, real world
: design for the fabrication of coaxial matching lines to allow
: use of catv al 1/2" hardline from a 52 ohm source to a 52 ohm load
: on 144 and 440 mhz?

Hi again Peter, I was thumbing through "Reflections" at the
barber shop today and came across the following: Per 100 ft
of 75 ohm 1/2" hardline on 440, the matched line loss, ie
with an SWR of 1:1, is 2db. With an SWR of 1.5:1 it is
0.1 db worse, ie 2.1 db. Moral: don't even for a minute
worry about the mismatch. An SWR of 1.5:1 is near perfect!!!

73, Cecil, KG7BK (W6RCA soon), OOTC



From [e-mail] Wed Jun 05 20:36:53 1996
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Expirimental Microwave Transmissions
Date: Sun, 02 Jun 96 13:59:22 GMT
Message-ID: <4osb0m$[e-mail]>
References: <4oi13i$[e-mail]> <4oo7vb$[e-mail]>

   [e-mail] (Rod Lane) wrote:

>A few years ago at Dayton I witnessed a guy who'd modified a
>standard  microwave oven to do ATV.  The bandpass was good enough
>for color and he'd modified a satellite receiver down-converter
>and receiver to receive the signal.  It looked pretty good,
>especially since he was able to run about 250 watts cleanly
>modulated on a 600 watt microwave oven.
>
>It was kind of comical since he used the oven cavity as the
>location for the pair of 4CX250b tubes for the modulator.  Just
>open the interlocked front door for access.  And of course the
>mechanical timer acted as a time-out-timer.

I didn't realize hams were using high-level modulation for ATV.
This obviously produces double sideband, not vestigial sideband
as used by broadcasters.  Is double sideband transmission typical
of Amateur TV transmissions?

73,
Jack  WB3U


From [e-mail] Wed Jun 05 20:36:54 1996
From: Joe Leikhim <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Expirimental Microwave Transmissions
Date: Sat, 01 Jun 1996 01:29:47 -0400
Message-ID: <[e-mail]>
References: <4oi13i$[e-mail]> <[e-mail]> <4ol066$[e-mail]>

Stephen Muther wrote:
>
> In article <[e-mail]>,  <[e-mail]> wrote:
> >In article <4oi13i$[e-mail]>,
> >MIKE STEWART <[e-mail]> wrote:
> >> A co-worker and I are working on using the magnatron from a microwave to
> >> transmit back and forth to each other. but we've run into a problem when
it
> >> comes to modulating the magnatron. ...
> >
> >I am told there was an article on this years ago in '73' magazine but
> >I haven't found any library with back holdings this side of Amherst,
> >so I haven't pursued it.

I remember an article in 73 magazine that used a microwave oven for atv
transmission. I remember that the magnetrons were locked on freq with an
injection oscillator or a simple PLL. For some reason it was necessary
to remove the bypass caps on the filament lines of the magnetron. good
luck.


--
Joe Leikhim
[e-mail]
"tv dinner by the pool,
i'm so glad i finished school"-F.Zappa 1967


From [e-mail] Wed Jun 05 20:36:55 1996
From: Brian Olliver <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Expirimental Microwave Transmissions
Date: Wed, 5 Jun 1996 00:03:34 +0100
Distribution: world
Message-ID: <[e-mail]>
References: <4oi13i$[e-mail]>

In article <4oi13i$[e-mail]>, MIKE STEWART
<[e-mail]> writes
>
>  hello,
>
>A co-worker and I are working on using the magnatron from a microwave to
>transmit back and forth to each other. but we've run into a problem when it
>comes to modulating the magnatron. if anyone has any info on this subject
>please reply..
>
>                               thanks,
>                                 mike stewart
>[e-mail]

-hello
there's one thing about the net it is always entertaining
do you intend to kill your friend or just toast him a little
please be careful the frequency of microwave ovens is chosen
so that it will impart maximum power into anything containing water
i think at the last count the average person was 96% water

well if your still intent it can be done the microwave oven magnetron
is however a little crude, if you want simple comms arrange for the
high voltage to be switched on and off at a audio freq say 1000hz
then key that oscillator "bingo" morse
if you want audio as in speech then you need to read up on pulse width
modulation techniques and vary the time period that your magnetron is
switched on and off in proportion to the audio content

for effective communications on microwave you only need 5-10 mW for
up to 20 miles your magnetron is going to give 100 to 1200 Watts
it's a bit of overkill if you'll excuse the pun <_>
- you don't have to observe effects of radiation to be harmed cancer can
be a result also instant blindness can be caused, it is so insidious because
you can't see it

you could achieve the same comms with a sparking coil from a car and in com-
plete safety it just bites a little
have fun

Brian Olliver


From [e-mail] Wed Jun 05 20:36:56 1996
From: Kenneth Keslar <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Homebrew rigs
Date: 2 Jun 1996 19:00:36 GMT
Message-ID: <4osock$[e-mail]>

Hi all!

I am interested in how to build a 2 meter/ 70 centimeter rig.....

If any body knows how to or can give me some advice please e-mail me at
[e-mail]



thanks in advance.

73 DE KB2WKW
Kenny



------------------------------------------------------------------------
 77777 333     DDDDD  EEEE   K  K BBBB   22   W   W   W K  K W   W   W
    7     3    D    D E      K K  B   B 2  2  W   W   W K K  W   W   W
   7   333     D    D EEEE   KK   BBBB    2   W   W   W KK   W   W   W
  7       3    D    D E      K K  B   B  2     W W W W  K K   W W W W
 7     333     DDDDD  EEEE   K  K BBBB  22222   W   W   K  K   W   W
------------------------------------------------------------------------



From [e-mail] Wed Jun 05 20:36:57 1996
From: Roland Burgan <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew,sci.electronics.repair
Subject: Re: How do you weld solder tabs onto NiCd batteries?  How do you solder to stainless tabs?
Date: 1 Jun 1996 14:25:03 GMT
Message-ID: <4opjrv$[e-mail]>
References: <4oe309$[e-mail]> <4oemqv$[e-mail]> <[e-mail]>

You can probrably silver solder onto the tabs.



From [e-mail] Wed Jun 05 20:36:58 1996
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
Subject: Re: Mobile Noise Help
Date: Sun, 02 Jun 96 15:55:03 GMT
Message-ID: <4oshpg$[e-mail]>
References: <4oic8d$[e-mail]> <4oodji$[e-mail]>

   [e-mail] (Cecil A. Moore~) wrote:
>Chris Smith, NR3O <[e-mail]> wrote:

>>I get a rushing hash (like white noise) only when the engine
>>is under load.  It is enough to wipe-out weaker stations, but
>>not those louder ones.  I throw in the clutch and it goes away,
>>even if I then race the engine (leads me to think it's not
>>ignition, but some sender unit--perhaps fuel injection
>>electronics radiate only under load?).

>Hi Chris, I have begun to suspect the ABS system is causing a
>similiar problem in my S10. Does anybody know if the clutch
>position is sensed by the ABS?

I don't know much about ABS, but I do seem to remember something
about fuel injection that has to do with the way some systems
meter intake airflow.  If I'm not mistaken, they use a heated
wire at the input to the metering unit, and airflow is determined
by measuring the current change through the wire.  As more air
flows, the wire becomes cooler and more current flows.  This is
computed in conjunction with ambient air temperature and other
factors in order to arrive at instantaneous calculations of
airflow.  Also, if I'm correct about the system, this particular
function is cut off during idle, at which time radiation from the
metering unit decreases.  It's possible this might also be linked
to the clutch, as airflow metering is not so critical at no load,
even when the airflow valve is opened to accelerate the engine.

Perhaps someone more knowledgable with current designs will know
whether this system is still in use, and whether I'm correct
about the way it works.

73,
Jack  WB3U


From [e-mail] Wed Jun 05 20:36:59 1996
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew
Subject: Re: Mobile Noise Help
Date: Sun, 02 Jun 96 15:55:03 GMT
Message-ID: <4oshpg$[e-mail]>
References: <4oic8d$[e-mail]> <4oodji$[e-mail]>

   [e-mail] (Cecil A. Moore~) wrote:
>Chris Smith, NR3O <[e-mail]> wrote:

>>I get a rushing hash (like white noise) only when the engine
>>is under load.  It is enough to wipe-out weaker stations, but
>>not those louder ones.  I throw in the clutch and it goes away,
>>even if I then race the engine (leads me to think it's not
>>ignition, but some sender unit--perhaps fuel injection
>>electronics radiate only under load?).

>Hi Chris, I have begun to suspect the ABS system is causing a
>similiar problem in my S10. Does anybody know if the clutch
>position is sensed by the ABS?

I don't know much about ABS, but I do seem to remember something
about fuel injection that has to do with the way some systems
meter intake airflow.  If I'm not mistaken, they use a heated
wire at the input to the metering unit, and airflow is determined
by measuring the current change through the wire.  As more air
flows, the wire becomes cooler and more current flows.  This is
computed in conjunction with ambient air temperature and other
factors in order to arrive at instantaneous calculations of
airflow.  Also, if I'm correct about the system, this particular
function is cut off during idle, at which time radiation from the
metering unit decreases.  It's possible this might also be linked
to the clutch, as airflow metering is not so critical at no load,
even when the airflow valve is opened to accelerate the engine.

Perhaps someone more knowledgable with current designs will know
whether this system is still in use, and whether I'm correct
about the way it works.

73,
Jack  WB3U


From [e-mail] Wed Jun 05 20:37:00 1996
From: K.S.
Newsgroups: rec.radio.amateur.homebrew
Subject: Mod for FT1000
Date: Fri, 31 May 1996 23:28:03 GMT
Message-ID: <4onvdc$[e-mail]>

Who know a mod for receive below 100 kHz ?

Thanks... K.S.




From [e-mail] Wed Jun 05 20:37:01 1996
From: Brian Olliver <[e-mail]>
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.homebrew
Subject: Re: need help with wire dipole
Date: Wed, 5 Jun 1996 00:07:30 +0100
Distribution: world
Message-ID: <[e-mail]>
References: <[e-mail]>

In article <4okuue$[e-mail]>, Chuck Bland
<[e-mail]> writes
>[e-mail] (WB3U) wrote:
>>   [e-mail] (Charlie Fortner) wrote:
>>
>>>I'm planning to put up a 250 ft (approx. full wave 80m) wire
>>>dipole and feed it with ladder line for use as a multiband antenna.
>>
>>What method are you planning to use to drive the ladder line?  A
>>balun will probably be less than satisfactory due to the high
>>impedances involved on some bands.
>>
>>73,
>>Jack  WB3U
>
>A link-coupled tuner would do the job quite nicely. Sure, it may set
>technology back about 30 years, but the system would be better than a
>"mere balun".
>
>Chuck - n6dbt
>
>

-i don't think a full wave dipole will radiate "check it out"
maximum voltage will be at the centre of the half conductors
thus cancelling each other-
Brian Olliver


From [e-mail] Wed Jun 05 20:37:02 1996
From: [e-mail] (Ed Mitchell)
Newsgroups: rec.radio.amateur.misc,rec.radio.amateur.digital.misc,rec.radio.amateur.policy,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.scanner,rec.radio.shortwave
Subject: Re: NEW! Radio Equipment Spec Sheets at Ham Radio Online
Date: 1 Jun 1996 20:22:50 GMT
Message-ID: <4oq8qq$[e-mail]>
References: <4ob65j$[e-mail]> <4off1j$[e-mail]> <4ogtgs$[e-mail]>

In article <4ogtgs$[e-mail]>, [e-mail]
says...
>
>   [e-mail] (miker in Tigard, OR.) wrote:
>
>>Neat web page.  Lots of good stuff.
>>But it takes forever to load... like 2 minutes when the web is
>>loaded.  Would it be possible to put all the neat graphics in a
>>sub-page, or at least show the links before posting the graphics so
>>we don't have to wait?
>
>If you're using Netscape, why not set it so it only loads graphics
>on demand?  That's easier than trying to convince Web page authors
>to change their designs.
>
>73,
>Jack  WB3U

Thanks for the comments. By our measurements the typical user operating at
21,600 to 28.8 kbps loads the main page in 20 to 30 seconds; at 14.4 kbps
you'll see about 45 to 60 second loads. A 14.4 modem is our target
user. However, the actual load time varies depending upon server load and
Internet traffic. We rent our server space at AccessOne in Kirkland WA. They
connect to the Internet over two T-1 connection (1.544 mbps each).

Depending on your browser, you may be able to disable the display of graphics
or ensure that your browser caches images so that they do not need to be
downloaded each time. My browser also lets me page up and down and read pages
before the entire page has been loaded. This let's me select things to read
without necessarily waiting for the entire page to load.

We are also in process of setting up the web site on a new ISP that may have
higher performance. We'll post a message when that becomes availble - probably

its a month out at least.

We know that as our hobby web site has grown, the size of the pages has also
grown. We've redesigned the web site twice since starting and its time for
another redesign to accomodate the increased content.

We would like to do a redesign some time but that's easier said then done. We
run this web site solely as a hobby. My real job typically uses up 11 hours a
day of my time; we've got 3 small kids. And other time pressures too. Sometime

we will change the page design again but I would not expect more than perhaps
a
1/3rd reduction in download time.

Ed

------------------------
Ed (KF7VY) and Kim (N7VPL) Mitchell
personal email to [e-mail]
Visit Ham Radio Online, it's free! at
http://www.accessone.com/~vbook/hronline.htm



From [e-mail] Wed Jun 05 20:37:03 1996
From: [e-mail] (Ed Mitchell)
Newsgroups: rec.radio.amateur.misc,rec.radio.amateur.digital.misc,rec.radio.amateur.policy,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.scanner,rec.radio.shortwave
Subject: Re: NEW! Radio Equipment Spec Sheets at Ham Radio Online
Date: 2 Jun 1996 02:50:48 GMT
Message-ID: <4oqvi8$[e-mail]>
References: <4ob65j$[e-mail]> <4off1j$[e-mail]> <4ogtgs$[e-mail]> <4oq8qq$[e-mail]>

In article <4oq8qq$[e-mail]>, [e-mail] says...
>
>In article <4ogtgs$[e-mail]>, [e-mail]
>says...
>>
>>   [e-mail] (miker in Tigard, OR.) wrote:
>>
>>>Neat web page.  Lots of good stuff.
>>>But it takes forever to load... like 2 minutes when the web is
>>>loaded.  Would it be possible to put all the neat graphics in a
>>>sub-page, or at least show the links before posting the graphics so
>>>we don't have to wait?
>>
>>If you're using Netscape, why not set it so it only loads graphics
>>on demand?  That's easier than trying to convince Web page authors
>>to change their designs.
>>
>>73,
>>Jack  WB3U
>

I had some time tonight. I redesigned the main web page for faster download
times. At 21,600 bps, the main page downloaded in 15-20 seconds. The
newsletters, propagation and start/welcome sections have been simplified and
moved to their own pages accessible off the main page. Everything is still
there - just moved to new locations.

The main page has (at the moment) 3 graphics: the Ham Radio Online title banne
r
(highly compressed JPEG at about 8kbytes), a picture of the Yaesu FT-50R (JPEG

compressed at about 3.7 kbpytes) and the background graphics (4 kbytes). The
overall text is about 12 kbytes, plus maybe another misc 2 kbytes (EFF logo, W
A
logo). That works out to about 30 kbytes total for the main page which should
download quickly at 14.4 kbps. As soon as the 12 kbytes of text (hronline.htm)

is downloaded, your browser should allow you to scroll around, even if the
graphics are still coming in. 12 kbytes ought to download in 10 to 20 seconds
depending on your modem speed, server load and Internet traffic.

Please write us at [e-mail] and let us know what you think of the new
design.

Ed, Editor
Kim, copy editing and layout

------------------------
Ed (KF7VY) and Kim (N7VPL) Mitchell
personal email to [e-mail]
Visit Ham Radio Online, it's free! at
http://www.accessone.com/~vbook/hronline.htm



From [e-mail] Wed Jun 05 20:37:05 1996
From: [e-mail] (Stephen Muther)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Parts data needed
Date: 4 Jun 1996 19:16:32 -0700
Message-ID: <4p2qm0$[e-mail]>
References: <[e-mail]>

In article <[e-mail]>,
Lawrence Stoskopf <[e-mail]> wrote:
>Bought at Dayton new, but no specs and need working voltages:
>
>ANZAC MD-112-3  0.01-12 GHz mixer in big yellow box.  Has input for diode bia
s!
>Has schematic on case so can probably play with the bias a bit, but would be
>nice to have the bais data
>
>
>Microsource YIG OSC 10.0-18.0 GHz.  MS01018-236-01
>Needs +15 v. and probably can start with low current on tune inputs to find
>what gets me where I want to be.  Would be nice to have heater voltage.
>
>Thanks,
>Lawrence E. Stoskopf, M.D.
>N0UU
>

I can't help with the mixer, but most YIGs I have seen have 24V heaters.
I have played with several that I picked up from fleamarkets and have
had no trouble firing them up, not knowing the tune currents, by using
a power supply with adjustable current limit.

Typically, I start at zero current at which point the YIG shows no
signs of oscillation.  Increasing the current slowly, you will reach
a point where the oscillator starts, so just start plotting your
frequency vs. current chart there.  If you have gotten up to 700mA
or so and have not seen any sign of oscillation, the beast is probably
dead.  Note that you generally don't need the heater connected unless
you just want the added temperature stability.

Good Luck

Steve Muther WF6R
[e-mail]
[e-mail]




From [e-mail] Wed Jun 05 20:37:06 1996
Newsgroups: rec.radio.amateur.homebrew
From: [e-mail] (Christopher J Hansen)
Subject: Physics of FM
Message-ID: <[e-mail]>
Date: Sun, 2 Jun 1996 02:14:29 GMT

I've heard a Mexican radio station up in Santa Barbara and I'm
quite sure they don't use a repeater.  VHF radio waves can propagate
that distance (~250 miles) if the conditions are right.
The more power they have the less "right" the conditions have to be.
(Try VHF contesting sometime!)  I'm sure that station in Tijuana has
plenty of kilowatts.

Chris Hansen, KQ6DW



From [e-mail] Wed Jun 05 20:37:07 1996
From: Clifford Buttschardt <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Saturation in toroid cores
Date: Sat, 1 Jun 1996 10:47:32 -0700
Message-ID: <[e-mail]>
References: <4nc17k$[e-mail]> <4nde65$[e-mail]> <4nekln$[e-mail]> <4nu20t$[e-mail]> <4nvb8q$[e-mail]> <4o2pkq$[e-mail]> <4obh1t$[e-mail]> <4octvd$[e-mail]> <4olqju$[e-mail]>
To: Wilbert Knol <[e-mail]>

Yes and in addition, use a scope to monitor the voltage.  ANY distortion
whatever of the signal is a clue to saturation!     CliffButtschardt
W6HDO/K7RR

On Fri, 31 May 1996, Wilbert Knol wrote:

> [e-mail] wrote:
>
> >V_peak is the voltage measured across the N turns. If the N turns are
> >left open, they don't contribute to the the magnetic field since no
> >current flows. You then measure the voltage induced by the magnetic
> >field from whatever other turns there are.
> <snip>
> >You can calculate the flux from the currents in the windings too,
>
> Thanks for the clarification Kevin. It sounds like the proper way to
> monitor flux change in a core is to monitor the voltage across a
> winding, as according to Faraday, this voltage must be proportional to
> dB/dt, regardless of saturation.
>
> In case of saturation, B no longer follows H. So, to check for
> saturation in a toroid inductor in a output network of a transmitter,
> I would measure the current into the winding with a current probe
> hooked up to an oscilloscope, and display it against the voltage
> across the winding.
>
> If v(t) is proportional to di(t)/dt at all times, the core is free of
> saturation. Saturation would show up where i(t) gets large, resulting
> in a collaps of v(t). Does that sound reasonable?
>
> Wilbert, ZL2BSJ.
>
>
>
>
>



From [e-mail] Wed Jun 05 20:37:08 1996
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Sizing toroid core for use in tube pi-net?
Date: Sun, 02 Jun 96 14:00:34 GMT
Message-ID: <4osb2v$[e-mail]>
References: <[e-mail]>

   [e-mail] (David Feldman) wrote:

>Is there any sort of rule-of-thumb on choosing the correct core
>size for a toroid core tube used as substitue for air core coil
>in a tube-output HF final/amplifier section?  For example, at
>7 MHz, 700 volts/300 mA (maybe 100W output...) would a T200-2
>core be required, or could a smaller one be used, or would the
>T200-2 even be sufficient?

I haven't built one of these, but I'll offer a procedure that I
think is a reasonable way to roughly verify the core size.

At 700 volts/300 ma plate input, E/I equals 2,333.  If we assume
that the conduction angle is 50 degrees, the operating impedance
will be 1,167 ohms.  I'll round this to 1,200 ohms. For 100 watts
output, this represents an RMS voltage of 346 volts.  The output
end of the coil will be operating at an impedance of 50 ohms,
which represents an RMS voltage of 71 volts.  Thus, the coil will
see a differential voltage of 275 volts.

Now, let's say that we need 3 uH for this inductor.  A T-200-2
core (u=10) with 16 turns will provide this value.  Calculating
for flux density with the Amidon formula gives 41.4 gauss, which
is within their recommended maximum of 57 gauss at this frequency
(based on overheating).  Using this same technique, the coil will
require approximately 0.8 uH on 10M (8 turns), which yields a flux
density of 20.7 gauss, well within the recommended maximum of
30 gauss at 28 MHz.

Again, I haven't used a core in this manner, so there may be other
factors involved in an exact determination that I'm not aware of.
However, I think this is sufficient to get into the ballpark in
selecting an appropriate core size.

>If you wanted to make a multi-band output network (with tapped
>coil), would you need to size the core for the highest operating
>frequency (assuming similar tube operating point for each frequency)?
>
>Any advice appreciated,

My advice is not to do it.  With a single tapped coil, you end
up either shorting the turns, which severely reduces the Q and
increases loss (and which cannot be calculated with the Amidon
formula), or you will have open turns, which develop high
voltages and will probably arc.

The proper way to use toroids in this application is to design
an individual inductor for each band, although you might get by
using one core for every two bands (as long as switching doesn't
short the unused turns).  When it's all said and done though,
you'll find that a single, air-core coil takes up less space, is
more efficient, offers better harmonic suppression, and is much
less costly.

73,
Jack  WB3U


From [e-mail] Wed Jun 05 20:37:09 1996
From: [e-mail] (Steve Kennedy)
Newsgroups: rec.radio.amateur.homebrew,rec.radio.shortwave
Subject: Re: Synchronous AM detectors
Date: Tue, 04 Jun 1996 17:44:55 GMT
Message-ID: <4ovbra$[e-mail]>
References: <[e-mail]>

Nick Button <[e-mail]> wrote:

>Hi,

>Does anybody know of any circuits for add-on synchronous detectors for
>AM broadcast reception ?

>I keep reading how wonderful they are supposed to work but I'd like to
>put one together and try it myself before I shell out cash on buying a
>new RX...

> +---------------------------------------+
> | Nick Button, Nottingham U.K.          |
> | email:-  [e-mail]      |
> | ham radio:- G4IRX @ GB7NOT.#23.GBR.EU |
> | fax:-       [phone]          |
> +---------------------------------------+

]

There is an individual named Steve Johnston who sells a sync detector
kit that can be used with any radio that has a 455 kHz IF, he can be
contacted at:


[e-mail]


I don't know anything about the kit, other than the info looks good
and I know of several people who have purchased it and are currently
constructing one.

Steve
WB7PSD



From [e-mail] Sat Jun 08 13:01:01 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.dx,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: ! June 96 CD-ROM Available !
Date: Thu, 06 Jun 96 20:37:35 PDT
Message-ID: <NEWTNews.834118688.6173.amsoft@dx4_120>


AmSoft announces the June 1996 release of its CD-ROM "The World of
Ham Radio".  This CD-ROM contains the World's largest collection
of amateur radio, electronic, and engineering software, plus the
most recent FCC amateur radio license database available on CD-ROM.
The current FCC database includes calls issued up to 22 April 1996.
This software collection is the best available anywhere in the World
for electronics, engineering, and the hobby of Amateur Radio.  Over
20,000 files and programs for the hobbyist or professional.  Stop
by our WWW SITE: http://hamster.ivey.uwo.ca:80/~amsoft/  and see.

At $19.00 plus $4.00 Shipping anywhere in the World AmSoft has the
lowest price for any CD-ROM offering these services.

TELEPHONE: [phone]   FAX: [phone]
or send E-MAIL: [e-mail]



From [e-mail] Sat Jun 08 13:01:02 1996
From: [e-mail] (Kees Leune)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: A radio link between computers?
Date: 4 Jun 1996 09:21:33 GMT
Message-ID: <4p0v6t$[e-mail]>
References: <Billy.28.0011F704@don't.bother.sending>

Billy the kid (Billy@don't.bother.sending) wrote:
* In order to beat the bills of BT, I want to connect two computers about
* 1/2 mile from each other.... I was thinking of using some sort of radio
* link, but I ain't sure if it will work. I was thinking of something like
* the below for both computers :

I think what you are looking for is packet radio. But I suggest that you
configure your newsreader first to reflect your proper email address so
ppl can reply to join instead of posting to the newsgroup.

Regards,
-Kees (PE1RHP)

--
Kees Leune                                       Email: [e-mail]
Student of Information Management and Technology      Tilburg University
Linux, the choice of a GNU generation!                   The Netherlands

WWW: http://pi0132.kub.nl:2080/people/kees          HAM callsign: PE1RHP


From [e-mail] Sat Jun 08 13:01:02 1996
From: Billy@don't.bother.sending (Billy the kid)
Newsgroups: rec.radio.amateur.homebrew
Subject: A radio link between computers?
Date: Mon, 3 Jun 1996 17:57:51
Message-ID: <Billy.28.0011F704@don't.bother.sending>

In order to beat the bills of BT, I want to connect two computers about
1/2 mile from each other.... I was thinking of using some sort of radio
link, but I ain't sure if it will work. I was thinking of something like
the below for both computers :
                     _______________
                     |                             \
Modem ____|___ Receiver        |_______ FM Transmitter

input     ________ output            _______  Input
                      |                            |
                      |______________/

The two computers would be transmitting on different frequencies, but
would some sort of feedback occur?

If anyone could help me or point in the direction of a circuit
which will do this

Rgrds

Peter Stevenson





From [e-mail] Sat Jun 08 13:01:04 1996
From: [e-mail](Glenn Sparks)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: A radio link between computers?
Date: 6 Jun 1996 21:30:58 GMT
Message-ID: <4p7imi$[e-mail]>
References: <Billy.28.0011F704@don't.bother.sending> <4p2aam$[e-mail]>



>First off, you'll need a license if you're going to transmit
>anything.  It'll never work on CB, so you'll have to study up
>a bit and get your ham license.  (No Morse nec, since in
>this case you'd only be using vhf.)
>
>Then look at a subject called "Packet Radio"
>However, due the large bandwidth needed, switching
>speeds are rather limited.  Can you live with 1200 baud?
>
>Uncle Brian  VK6BQN
>
>
If you want to do it right, buy 902 Mhz Spread Spectrum Lan cards, runs
about 2.5 Mb/sec and has a range of a couple of miles, and requires no
license.  A bit costly though.

This is the type of technology I was hoping the new breed of Ham would
bring to the hobby, but it looks like it has to be from commercial
vendors right now.

KI5GY  Glenn Sparks



From [e-mail] Sat Jun 08 13:01:06 1996
From: [e-mail]@fwi.com
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: A radio link between computers?
Date: 7 Jun 1996 02:06:52 GMT
Message-ID: <4p82rs$[e-mail]>
References: <Billy.28.0011F704@don't.bother.sending> <4p2aam$[e-mail]>
Reply-To: [e-mail]

In <4p2aam$[e-mail]>, [e-mail] ([e-mail]) writes:
>Billy@don't.bother.sending (Billy the kid) wrote:
>
>>In order to beat the bills of BT, I want to connect two computers about
>>1/2 mile from each other.... I was thinking of using some sort of radio
>>link, but I ain't sure if it will work. I was thinking of something like
>>the below for both computers :
>>                     _______________
>>                     |                             \
>>Modem ____|___ Receiver        |_______ FM Transmitter

>>input     ________ output            _______  Input
>>                      |                            |
>>                      |______________/
>>
>>The two computers would be transmitting on different frequencies, but
>>would some sort of feedback occur?
>
>>If anyone could help me or point in the direction of a circuit
>>which will do this
>
>>Rgrds
>
>>Peter Stevenson
>
>
>
>First off, you'll need a license if you're going to transmit
>anything.  It'll never work on CB, so you'll have to study up
>a bit and get your ham license.  (No Morse nec, since in
>this case you'd only be using vhf.)
>
>Then look at a subject called "Packet Radio"
>However, due the large bandwidth needed, switching
>speeds are rather limited.  Can you live with 1200 baud?
>
>Uncle Brian  VK6BQN
>
>



From [e-mail] Sat Jun 08 13:01:06 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Accuracy of Amidon toroid data?
Date: Thu, 06 Jun 1996 06:02:41 GMT
Message-ID: <4p5sfm$[e-mail]>
References: <[e-mail]>

John -

I've used the Amidon T-37-6 extensively in a homebrew transceiver, and
in transverters.  I haven't made measurements as you mention, but I
always have to remove turns to obtain resonance, in a BPF, for
example.  To match your 2X measurements, I would have had to remove
30% of the turns.  Don't think it was quite that much, but I had
trimmer caps to compensate.

When I do measure coils or caps with SG/Scope as you mention, I always
use 1k, or even 10k, on both sides.  The scope probe has some
capacity.


73,

Mark, KN5S    DM62

--

Mark Mandelkern
Las Cruces, New Mexico, USA

[e-mail]



From [e-mail] Sat Jun 08 13:01:08 1996
From: [e-mail] (Charles Curtis)
Newsgroups: rec.radio.amateur.homebrew
Subject: CATV matching problem
Date: 2 Jun 96 18:44:20 GMT
Message-ID: <[e-mail]>

> Peter Markham wrote:
>
>
>   Does anyone on the net have a url for a sound, real world
> design for the fabrication of coaxial matching lines to allow
> use of catv al 1/2" hardline from a 52 ohm source to a 52 ohm load
> on 144 and 440 mhz?

This is not a url, but will provide a solution to your
problem, nonetheless.

Find or construct two, one-quarter wavelength (at 144 Mhz)
long, low loss, coaxial cable assemblies having a characteristic
impedance as close to 62.4 ohms as possible.  Connect one of these
cables to each end of your CATV cable.  You will have a
completed line that will be matched to 52 ohms at each end.
The two, quarter wavelength cables act as transformers to
match the impedance of the CATV cable to the 52 ohm source and
load impedances.  The completed cable with match well at 440
Mhz also, because 440 Mhz is nearly an odd multiple of 144
Mhz.  This setup will also be broadband enough for the two
amateur bands.  Any length of CATV cable may be used.

A previous post stated that the CATV cable could be used alone
without any matching.  I do not agree.  If the length of
the cable is an even multiple of one-half wavelength at
the frequency used, then a feed with *any* characteristic
impedance could be used.  Otherwise (except for a 52 ohm feed),
depending on the actual length, the match could be *awful*.
Even if the CATV line is cut to an even multiple of one-half
wavelength at one of the bands, it would not be unsuitable for
*both* bands since the two bands are not even multiples of each other.

Chuck, N2UCN


From [e-mail] Sat Jun 08 13:01:09 1996
From: [e-mail] (Kerry Miller)
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.misc
Subject: Re: CMOS Keyer II
Date: Thu, 06 Jun 1996 22:49:30 GMT
Message-ID: <4p7n4r$[e-mail]>
References: <[e-mail]>

Dio <[e-mail]> wrote:

>Looking for the CMOS Keyer II kit.

>I have an address of:
>Idiom Press
>Box 1025
>Geyserville, CA 95441


>Anyone dealt with them?
>Prices?
>Do they have a tele#?

Dio,
    Not sure about the phone number, but they advertise in QST every
month, a little 1/2 by 1" ad, sometimes hard to find...  It's worth
the trouble to find them.  I've been using one for about 3 years and
still love it!  There is a new version with a few improvements and 6
memories instead of 4.  I think it's ten more bux.  Go for it, you'll
like it.  It only took me about an hour to build.
73,
Kerry Miller, WD5ABC




From [e-mail] Sat Jun 08 13:01:10 1996
From: Jake Brodsky <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.misc
Subject: Re: CMOS Keyer II
Date: Thu, 06 Jun 1996 11:21:11 -0700
Message-ID: <[e-mail]>
References: <[e-mail]>

Dio wrote:
>
> Looking for the CMOS Keyer II kit.
> Anyone dealt with them?
> Prices?
> Do they have a tele#?
>

I don't have details on telephone number.  Will e-mail it to you when
I get home.  I built one of their keyers last year.  Works pretty
well.  I think the kit was about $45 and I added a case, speaker
and buttons.

GL ES 73,

DE AB3A
Jake Brodsky
"Beware of the massive impossible!"


From [e-mail] Sat Jun 08 13:01:11 1996
Newsgroups: rec.radio.amateur.homebrew
From: [e-mail] (Dave Kirkby)
Subject: Cooling of power tubes - theoretical/practical problem.
Message-ID: <[e-mail]>
Date: Tue, 4 Jun 1996 11:21:17 GMT
Reply-To: [e-mail]

Does anyone claim to understand the requirements for cooling air flow of
power tubes ? In particular, how does one calculate the volume flow
rate required with inlet air temperatures above those on the data sheet ?

Assume a valve requires X cfm at 25 deg C inlet air. How much does it
require at 35 deg C or 50 deg C inlet air temp? According to publications from
 both
Eimac (Care and feeding of power grid tubes) and Burle (application note
on cooling, cant recall exact reference), it is increased by a factor
that accounts for the lower density of air as its temp is increased.
So to keep the same *mass* of air, the flow rate must be increased.

However, when one finds a data from Eimac on one of their tubes for
higher inlet air temps, it never seems to fit the fiddle factors
they state. The flow rates required at high input temps seem much
higher than the factors given would have you belive.

At first I found this odd, but after thinking about it, it became
obvious that two effects both require more air, so considering only
the density loss is not sufficient. These effects are:

1) The loss of density, given by a factor:

F1=(273+T)/(273+25) where T = inlet temp in deg C.

AND

2) The fact that as the inlet air is hotter, the difference in temp
between the air and the valve is less, so less heat is transfered.

I assumed the air flow would scale by another factor:

F2=(273+250-T)/(273+250-25),

where T=250 is the max tube temp. However, if the air flow requirements
at 25 deg C are scaled by a factor F1*F2, it still does not fit the data given
on data sheets.

If you are followed this and have an ideas, please let me know.








---
Dave Kirkby G8WRB
Dept of Medical Physics,
University College London,
11-20 Capper St,
London WC1E 6JA
Tel: [phone]
Fax: [phone]







From [e-mail] Sat Jun 08 13:01:12 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: design for 1/2" catv hardline z matching lines?
Date: Sat, 01 Jun 1996 23:05:36 GMT
Message-ID: <4oq4h7$[e-mail]>
References: <4od01k$[e-mail]>

Hi Pete:
Drop me a line at http://www.thresholdav.com/jvh.htm and I'll send you
plans that will work well. I can also supply you with the parts.
Tony / KB8JVH
Peter Markham wrote:

>
>   Does anyone on the net have a url for a sound, real world
>design for the fabrication of coaxial matching lines to allow
>use of catv al 1/2" hardline from a 52 ohm source to a 52 ohm load
>on 144 and 440 mhz?
>                         TIA,
>                             Pete/wa4hei





From [e-mail] Sat Jun 08 13:01:13 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: design for 1/2" catv hardline z matching lines?
Date: 7 Jun 1996 14:25:33 GMT
Message-ID: <4p9e4t$[e-mail]>
References: <4od01k$[e-mail]> <4or2i9$[e-mail]> <[e-mail]>
Reply-To: [e-mail]

In <[e-mail]>, [e-mail] (Joe Mack) writes:
>In article <4or2i9$[e-mail]> Cecil Moore <kg7bk@primenet.c
om> writes:
>>:    Does anyone on the net have a url for a sound, real world
>>: design for the fabrication of coaxial matching lines to allow
>>: use of catv al 1/2" hardline from a 52 ohm source to a 52 ohm load
>>: on 144 and 440 mhz?
>>
>
>Someone sells these, I've seen them, although I don't know who.
>THey're made of Cu tubing (1/2" OD) with a center shaft made of
>smaller CU tubing which fits over the center conductor of the
>hardline. the outer Cu tubing is held on to the hard line by a hose
>clamp. Looks nasty but I know someone who has them up on his
>tower and he's had no problems with them.
>
>       Joe NA3T
>       [e-mail]
>
>
>
>
 Hi,
  Cablewave Systems makes an end connector P/N 16733 that gets you from
 1/2" aluminum CATV hardline to an 'N' connector. I'd bet they have what your
 looking for. Sorry, no address on Cablewave. I use them to terminate a 175'
 run betwixt the 4-1K and my tower. Works slick...

                                                         Jim



From [e-mail] Sat Jun 08 13:01:14 1996
From: Andrea Ghilardi <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: desperately seeking for 3SK124
Date: 31 May 1996 20:53:09 GMT
Message-ID: <4onm7l$[e-mail]>

Hello here is Andrea IK5QLO,
I am in need of the "old" GaAsFet 3SK124 as replacement
for some Aged but still good MMT 2m preamplifiers and
converters. I will be happy to buy it !
Here in Italy they seems to be disapperead !

73 de Andrea IK5QLO

Email: [e-mail]

Packet Radio : [e-mail]


From [e-mail] Sat Jun 08 13:01:15 1996
From: Woody White <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: FM ATV  (Ref: Exp.  Microwave Xmissn)
Date: 6 Jun 1996 03:30:55 GMT
Message-ID: <4p5jdf$[e-mail]>

I have successfully used a VCO from a scrapped cel-tel - this one went to 900M
Hz
ok..  Directly modulated VCO through low gain video amp for better control.  M
MICs
and a small brick take it to a few watts.  Have used bricks designed for 800 M
Hz,
but input matching got weird.  Selecting the proper length of RG-188 to drive
it was necessary to achieve output. Wrong length = no output!

For rx, I run my (conventional) downconvertor into an old satTV (LNA style)
box which normally used a 70 MHz IF. ...Got it free from a friend who had inst
alled
an LNB system - was gathering dust in basement. Has ch3 and baseband video out
put.

The video quality is great and don't have to worry about linearity! It is buil
t into
the tape basket area of a mechanically damaged camcorder I got for $20.  Too b
ad
those are so hard to obtain... Transport/basket most failure prone area of
camcorder - who cares!?  Most places won't give/sell defective units.  Several
large store service areas checked said- yeah got a nice one with beyond repair
basket, but you can't have it... Policy sez we gotta destroy it! :-(

??? Can anyone tell me what the LNA rx boxes want to see for audio modulation?
??
Currently I am not applying audio to the tx system but would like to...

Also... Have HBed several hetrodyne Tx for 426.  Excellent audio, fair video p
ix.
Had to start with a ch3/4 "modulator" from VCR which was a little limiting.  N
ever
could find the National chip I wanted to use (I think the AEA xcvr did use it)
.
.. Mine was on the air when ARA started selling their (similar) rig.

We have a 426 in 923 out AM repeater on mountain top here also.

73, Woody   WB4QXE      [e-mail]



From [e-mail] Sat Jun 08 13:01:16 1996
From: Woody White <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: FM ATV  (Ref: Exp.  Microwave Xmissn)
Date: 6 Jun 1996 03:28:53 GMT
Message-ID: <4p5j9l$[e-mail]>

I have successfully used a VCO from a scrapped cel-tel - this one went to 900M
Hz
ok..  Directly modulated VCO through low gain video amp for better control.  M
MICs
and a small brick take it to a few watts.  Have used bricks designed for 800 M
Hz,
but input matching got weird.  Selecting the proper length of RG-188 to drive
it was necessary to achieve output. Wrong length = no output!

For rx, I run my (conventional) downconvertor into an old satTV (LNA style)
box which normally used a 70 MHz IF. ...Got it free from a friend who had inst
alled
an LNB system - was gathering dust in basement. Has ch3 and baseband video out
put.

The video quality is great and don't have to worry about linearity! It is buil
t into
the tape basket area of a mechanically damaged camcorder I got for $20.  Too b
ad
those are so hard to obtain... Transport/basket most failure prone area of
camcorder - who cares!?  Most places won't give/sell defective units.  Several
large store service areas checked said- yeah got a nice one with beyond repair
basket, but you can't have it... Policy sez we gotta destroy it! :-(

??? Can anyone tell me what the LNA rx boxes want to see for audio modulation?
??
Currently I am not applying audio to the tx system but would like to...

Also... Have HBed several hetrodyne Tx for 426.  Excellent audio, fair video p
ix.
Had to start with a ch3/4 "modulator" from VCR which was a little limiting.  N
ever
could find the National chip I wanted to use (I think the AEA xcvr did use it)
.
.. Mine was on the air when ARA started selling their (similar) rig.

We have a 426 in 923 out AM repeater on mountain top here also.

73, Woody   WB4QXE      [e-mail]



From [e-mail] Sat Jun 08 13:01:17 1996
From: Woody White <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: FM ATV  (Ref: Exp.  Microwave Xmissn)
Date: 6 Jun 1996 03:31:26 GMT
Message-ID: <4p5jee$[e-mail]>

I have successfully used a VCO from a scrapped cel-tel - this one went to 900M
Hz
ok..  Directly modulated VCO through low gain video amp for better control.  M
MICs
and a small brick take it to a few watts.  Have used bricks designed for 800 M
Hz,
but input matching got weird.  Selecting the proper length of RG-188 to drive
it was necessary to achieve output. Wrong length = no output!

For rx, I run my (conventional) downconvertor into an old satTV (LNA style)
box which normally used a 70 MHz IF. ...Got it free from a friend who had inst
alled
an LNB system - was gathering dust in basement. Has ch3 and baseband video out
put.

The video quality is great and don't have to worry about linearity! It is buil
t into
the tape basket area of a mechanically damaged camcorder I got for $20.  Too b
ad
those are so hard to obtain... Transport/basket most failure prone area of
camcorder - who cares!?  Most places won't give/sell defective units.  Several
large store service areas checked said- yeah got a nice one with beyond repair
basket, but you can't have it... Policy sez we gotta destroy it! :-(

??? Can anyone tell me what the LNA rx boxes want to see for audio modulation?
??
Currently I am not applying audio to the tx system but would like to...

Also... Have HBed several hetrodyne Tx for 426.  Excellent audio, fair video p
ix.
Had to start with a ch3/4 "modulator" from VCR which was a little limiting.  N
ever
could find the National chip I wanted to use (I think the AEA xcvr did use it)
.
.. Mine was on the air when ARA started selling their (similar) rig.

We have a 426 in 923 out AM repeater on mountain top here also.

73, Woody   WB4QXE      [e-mail]



From [e-mail] Sat Jun 08 13:01:18 1996
From: William W Janssen <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: FM ATV  (Ref: Exp.  Microwave Xmissn)
Date: 7 Jun 1996 14:48:21 GMT
Message-ID: <4p9ffl$[e-mail]>
References: <4p5jdf$[e-mail]>

I don't want to quote the original so in summary the idea is
to use an old defective VCR for receiver parts.

I have salvaged a couple of these for parts and some of them have
a module that is the complete receiver, RF to video and audio.

This only works for a VCR that has a "cable ready" tuner.

See if those stores that insist on destroying them will let you
check for the module, if so, help them destroy them by removing the
module. Get the connection info at the same time.

They work great for reception of 435 MHz AM transmission.

Bill K7NOM



From [e-mail] Sat Jun 08 13:01:19 1996
From: Woody White <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: FM ATV  (Ref: Exp.  Microwave Xmissn)
Date: 6 Jun 1996 03:34:10 GMT
Message-ID: <4p5jji$[e-mail]>
References: <4p5jee$[e-mail]>

Sorry 'bout the multiple post... first time I ever timed out...
Did not handle very gracefully...

Woody



From [e-mail] Sat Jun 08 13:01:20 1996
From: Woody White <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: FM ATV  (Ref: Exp.  Microwave Xmissn)
Date: 8 Jun 1996 03:33:16 GMT
Message-ID: <4pas9s$[e-mail]>
References: <4p5jdf$[e-mail]> <4p9ffl$[e-mail]>

William W Janssen <[e-mail]> wrote:
>I don't want to quote the original so in summary the idea is
>to use an old defective VCR for receiver parts.
>
>I have salvaged a couple of these for parts and some of them have
>a module that is the complete receiver, RF to video and audio.
>
>This only works for a VCR that has a "cable ready" tuner.
>
>See if those stores that insist on destroying them will let you
>check for the module, if so, help them destroy them by removing the
>module. Get the connection info at the same time.
>
>They work great for reception of 435 MHz AM transmission.
>
>Bill K7NOM
>

Quite true!  I can't count how many dead VCRs I have gutted for ATV parts....
I forget the exact ch, guys, but 70cm ATV is about ch 60 - 68.  Have known
some who used a retuned downconverter to dump into the if section if the
front end or synth. is fried. On one older varactor (non cable ready) unit
I opened the LO section and added a bit more inductance to tune down from ch 1
5.
This can be a bit tedious!

I have also built a GASFET / double tuned pcb stripline filter / MMIC front
end. This can be antennna mounted and really "wakes up" (and adds selecectivit
y)
the cable ready VCR for ATV.

73  Woody, WB4QXE    [e-mail]



From [e-mail] Sat Jun 08 13:01:22 1996
From: [e-mail] (Stephen Muther)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Frequency synthesis
Date: 6 Jun 1996 12:16:29 -0700
Message-ID: <4p7aqd$[e-mail]>
References: <[e-mail]> <4p4811$[e-mail]> <[e-mail]>

In article <[e-mail]>,
Jeff Bateman  <[e-mail]> wrote:
>I have a sketchy idea of digital electronics. I have a pc fm card made
>by Revel. Any chance it can be changed in anyway to receive HF ?
>I know fm modulation is diff than am. I am guessing it would be more
>than just locating the pll chip and changing a capacitor or resistance
>value. Or can it ?
>Thanks
>Jeff Bateman
>

I don't think this would be a very practical thing to consider.  A
better idea might be to find an AM radio card (if there is one)
and build a converter in front of it.  Sort of like the HF to AM
broadcast converters made for cars.  I think MFJ had one.  You
would then be able to receive HF AM broadcasts.  If you built
a BFO, you could then receive SSB if the tuning step size was
fine enough on the PC card.

I have not seen an AM card for the pc, possibly because of the
large amounts of RFI emitted by the PC in that frequency range.
I think an AM card would certainly need an antenna mounted away
from the PC to be useful.

Good Luck

Steve Muther  WF6R



From [e-mail] Sat Jun 08 13:01:23 1996
From: [e-mail] (Kevin  AstirCS "1U"   KO0B)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Frequency synthesis
Date: Wed, 05 Jun 1996 09:12:03 -0700 (PDT)
Message-ID: <4p4811$[e-mail]>
References: <[e-mail]>

> I want to
>cover 160m-10m at least, preferably all the way up to 2m or 70cm.

Aw, come on, why not go for DC to gamma coverage? <g>

Seriously though...the HF coverage is just doable.....going for VHF as
well is awfully ambitious.  There are many good reasons why HF, and
VHF rigs come in two boxes instead of one! (Ok, there are execptions I
know!)

DDS chips will go DC to ~ 20 Mhz.

You can use one to drive a PLL and get  "n" times the coverage, BUT
the PLL can only cover less than an octave.....(Yes this gives you n
times resolution, but most DDS chips tune to fractional Hz, so no
problem.)

What is generally done is to take the range (say 1-30 Mhz) and
generate it at a higher shifted range, say 41-70 Mhz.  This is then
hetrodyned down to desired range, say by beating against a 40 Mhz
crystal oscillator, and LP filtering.  Doing it this way lets you use
One low pass filter...other schemes require bandpass filters which
must tune or be switched.  All general coverage HF rigs use this
approach.

A more direct way is to "pretune" the PLL to approximatelly right
frequency, thus limiting range....maybe you could get a decade of
range this way..but I doubt that much.  3 octaves more likely.

Yeah...complicated.  If you can come up with a simple way to do what
you discribe, patent it fast.  This is one of those "classic" problems
that a lot of people have tried to solve.  All the successful
approaches have involved some "back door" technique as discribed
above.



-GL-, ko0b



From [e-mail] Sat Jun 08 13:01:24 1996
From: [e-mail] (Tom Swisher)
Newsgroups: rec.radio.amateur.homebrew
Subject: GE Mastr-Pro UHF repeater conversion
Date: 5 Jun 1996 17:07:08 -0400
Message-ID: <4p4sts$[e-mail]>
Keywords: GE,Mastr-Pro,repeater


Does anyone have the specifics on how to convert a GE Mastr-Pro (UHF) for
repeater operation? I've only got a partial manual including tune-up
instructions. I've got 3 of these things (2 were free, but work) and want
to use one for my UHF repeater instead of the insane conglomeration of
parts I have now. Please e-mail to [e-mail] as I don't get to
check here very often.

Thanks and 73,

Tom Swisher, N8GQK
[e-mail]


From [e-mail] Sat Jun 08 13:01:24 1996
From: Dj Merrill <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Icom HM-23 mic pinout
Date: Thu, 06 Jun 1996 11:39:54 -0400
Message-ID: <[e-mail]>

Anyone have the pinout for an Icom HM-23 mic, or one of the
Icom radios that it plugs into?

Thanks,

-Dj

--
---
Dj Merrill                          Institute for Simulation and
Training / UCF
Associate in Simulation             3280 Progress Drive, Orlando, FL
32826
[e-mail] - N1JOV        [phone] / Fax: [phone]

                       "BSD: The way Unix should be"


From [e-mail] Sat Jun 08 13:01:25 1996
From: PAUL MULLINER <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Info WANTED!  Kenwood TS440s to PC RS232
Date: Thu, 06 Jun 1996 10:33:58 +0100
Message-ID: <[e-mail]>
Reply-To: [e-mail]

Hi
Do you have any infomation on building a homebrew rs 232 interface for a
Kenwwod TS440s. I have located the Kenwood bits to do the job but as
always I'm sure we can come up with a cheaper alternative!
Also any recomendation as to which S/W to run once I've built the
interface would be welcome.      73's for now    PAUL...........
--
*****************************
* Paul Mulliner             *
* Barnsley, Yorkshire, UK   *
* [e-mail] *
*****************************



From [e-mail] Sat Jun 08 13:01:26 1996
From: PAUL MULLINER <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Kenwood TS440s RS232 Upgrade
Date: Fri, 07 Jun 1996 16:09:43 +0100
Message-ID: <[e-mail]>
Reply-To: [e-mail]

Can anyone inform me as to the type and make of the 2 ic's required
to upgrade the above radio's controll pcb to o/p ttl signals for rs232
interface???
I believe this info is supplied in the operators manual (which I dont
have)
PS Thanks to all those who E-Mailed me with the interface needed.
I'll be making a trip to MAPLINS this afternoon to by their kit
priced at 11.75 + a box  Beats Kenwoods 88.00

Go ON! let your PC take over your radio for the weekend!!!
Regards 73's de paul
--
*****************************
* Paul Mulliner             *
* Barnsley, Yorkshire, UK   *
* [e-mail] *
*****************************



From [e-mail] Sat Jun 08 13:01:27 1996
From: [e-mail] (Dan Hogan)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Late 60's early 70's ARRL Handbook
Date: Fri, 07 Jun 1996 15:32:18 GMT
Message-ID: <[e-mail]>
References: <[e-mail]> <4p26g8$[e-mail]>

[e-mail] (WB3U) wrote:

>   Joe Leikhim <[e-mail]> wrote:
>
>>If anyone out there has this vintage Handbook please check for
>>a 6 meter amplifier circuit using a pair (Au PAIR?) 4-125 or 6155
>>tubes in push pull. I would like a reprint of the schematic and
>>any power supply or biasing details for a half finished project.

Nothing matching these tubes in the 1961, 1976, 1978
editions.

Dan Hogan
    [e-mail]


From [e-mail] Sat Jun 08 13:01:28 1996
From: Jim <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Microwave ovens - anyone know the HT ???
Date: 7 Jun 1996 15:20:44 GMT
Message-ID: <4p9hcc$[e-mail]>
References: <[e-mail]>

The three microwave ovens I've dismantled all yielded a transformer
with approximately a 2100 volt CT secondary.  With a full-wave
rectifier (CT grounded), this will give somewhere around 1500 V, and
around 2800 V with a full-wave bridge (CT unused).

It is certainly well worth getting a junked microwave for parts and
experimentation.  They yield up a lot of nice switches, even if
everything else is dead.

Jim N6OTQ




From [e-mail] Sat Jun 08 13:01:29 1996
From: Cecil Moore <[e-mail]>
Newsgroups: rec.radio.amateur.antenna,rec.radio.amateur.homebrew
Subject: Re: need help with wire dipole
Date: 4 Jun 1996 20:01:02 -0700
Distribution: world
Message-ID: <4p2t9e$[e-mail]>
References: <[e-mail]> <[e-mail]>

Brian Olliver <[e-mail]> wrote:

: -i don't think a full wave dipole will radiate "check it out"
: maximum voltage will be at the centre of the half conductors
: thus cancelling each other-

Hi Brian, just because maximum voltage occurs at the center of
a dipole doesn't mean it won't radiate (unless, of course, one
is using coax to feed it directly. :-)

One of the very interesting things about 450 ohm ladder-line is
that the SWR will be the same when feeding a 45 ohm
half-wave dipole and when feeding a 4500 ohm full-wave dipole.
That means that the SWR is somewhat consistent when using 450
ohm ladder-line so it really doesn't make any difference what
the length of the dipole is (as long as it doesn't go below
approximately 3/8 WL).
--
73, Cecil, KG7BK (W6RCA soon), OOTC



From [e-mail] Sat Jun 08 13:01:30 1996
From: [e-mail] (Julian Rendell)
Newsgroups: rec.radio.amateur.homebrew,sci.electronics.design
Subject: Q: Help needed for high BW Tx/Rx design
Date: Wed, 05 Jun 1996 13:10:23 GMT
Message-ID: <4p444e$[e-mail]>
Reply-To: [e-mail]

As a core part of my MSc thesis project I need to transmit a digital
data stream of about 380kbps (kilo-bit/sec ie approx 32Kb/sec) from a
standalone device to PC.  The total transmission distance will be
about 5-10m.  The twist is that as the device can move, there must be
no physical impediment to its progress; so no wire, and its got to be
small and light.  Also, as the device runs on batteries, the
transmission system must be low power.

I've decided to use a wideband FM radio system... but as neither I nor
my supervisor know much about RF devices, I have a few unanswered
questions... so here's a summary of my ideas and questions so far:

I was planning to use a transistor to 'pull' the frequency of a
crystal locked oscillator in response to my digital data stream.  Then
frequency multiply this signal to >100MHz- which would also have
increased the frequency deviation, and hence increased the recieved
signal-to-noise ratio.

But I'm dubious as to weither a transistor would be able to modulate
the osciallator frequency at such a high data rate (given that I was
looking at a very simple oscillator circuit)...

(It would have been a useful learning exercise- and given me an excuse
to learn how to use SPICE- BUT I'm running out of time :-/)

So I am wondering if a more 'direct' approach will suffice:

LPF the digital data stream, so that the high pulses become
approximately sinusoidal, with a fundamental frequency (f2) of the
actual _bit_ length (not the data rate!).

Feed this into one input of a double balanced mixer; the other from a
local oscillator, set to the 'space' (ie data=low) frequency (f1).

HPF the mixer output, so there are only f1 and f1+f2 present.

To recieve: build an FM reciever with a bandwidth >(f1+f2)/2, tuned
(ie centred) to a frequency of f1+(f1+f2)/2.

Hopefully (with a bit of luck): recieve data= transmitted data.

I realise that with this scheme I will have no control over the
modulation index, and hence the transmitted signal-to-noise ratios-
and probably a whole heap of other things besides (especially as I'll
probably have to experiment with a couple of data rates).  But in
principle I can't see why it shouldn't work.

Now for a more detailed question:

I'm looking to use Philips' SA602 or SA612 DBMs, or the mixer stage of
a SA615-due to size, availability, and the Philips' data books have
been the most useful/understandable/comprehensive data books I've
looked at so far :-)

BUT these chips are designed as reciever mixer/IFs :-(
(ie RF freq. LO x RF -> (lower freq) IF)

Will they/should they/could they work as I require?
(ie low freq. modulating signal x RF freq LO -> high freq RF)

Ok guys, where are the mistakes in the above?

What do you suggest I investigate/correct/replace?

I will _really_ appreciate any advice on the above- as I mentioned
before RF is a completely new ball game to me!  (ie the hair I'm
losing can't be due to EM fields- 'cause I ain't got anything working
yet!)

Regards

Julian Rendell



From [e-mail] Sat Jun 08 13:01:31 1996
From: Billy@don't.bother.sending (Billy the kid)
Newsgroups: rec.radio.amateur.homebrew
Subject: Radio link between computers?
Date: Mon, 3 Jun 1996 17:58:28
Message-ID: <Billy.29.0011F9AA@don't.bother.sending>

In order to beat the bills of BT, I want to connect two computers about
1/2 mile from each other.... I was thinking of using some sort of radio
link, but I ain't sure if it will work. I was thinking of something like
the below for both computers :
                     _______________
                     |                             \
Modem ____|___ Receiver        |_______ FM Transmitter

input     ________ output            _______  Input
                      |                            |
                      |______________/

The two computers would be transmitting on different frequencies, but
would some sort of feedback occur?

If anyone could help me or point in the direction of a circuit
which will do this

Rgrds

Peter Stevenson





From [e-mail] Sat Jun 08 13:01:32 1996
From: [e-mail] (JohnsonHE)
Newsgroups: rec.radio.amateur.homebrew
Subject: SG9 IF Strip
Date: 5 Jun 1996 06:32:53 -0400
Message-ID: <4p3nol$[e-mail]>
Reply-To: [e-mail] (JohnsonHE)

Someone asked for SG-9 IF strip schematics. I have all 22 pages of this
neat little board. I can't find you again., send name and address to my
internet address and I'll mail

W4ZCB

[e-mail]


From [e-mail] Sat Jun 08 13:01:33 1996
From: [e-mail] (CHRISTOPHER CARTWRIGHT)
Newsgroups: rec.radio.amateur.homebrew
Subject: Speaking of the ARRL Handbook...
Date: 6 Jun 1996 14:10:44 GMT
Message-ID: <4p6ot4$[e-mail]>

I believe there is a "no-license" band somewhere around 160KHz,  seems to me
you had to be 1W or less, maybe 100mw or less, maybe CW only, no more than
50' of antenna and leadline combined.  This is all long ago and very hazy.
I think it had something to do with power companies wanting meters to report
on their own over power lines.  With LORAN and all the other VLF stuff it
might be difficult to make contact with only 100mw and a VERY inefficient
antenna.  Hey wait a minute,  isn't that what amateur radio was about?  :)

And QRP is low power (under 5W), but I'm not sure if that's PEP or input
power.

--
-- Christopher Cartwright, Tech. Engineer    |  ...our chief weapons are fear,
-- Voice 301.295.0809                        |  fear and surprise, and nice
-- Mail  [e-mail]         |  red uniforms, oh damn!!
--       [e-mail]                     |        -- Monty Python


From [e-mail] Sat Jun 08 13:01:34 1996
From: Clifford Buttschardt <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Speaking of the ARRL Handbook...
Date: Thu, 6 Jun 1996 15:23:11 -0700
Message-ID: <[e-mail]>
References: <[e-mail]> <[e-mail]>

Hi Rick here is a web page that will help you with the 1750 meter
band:     http://users.aol.com/lwcanews/
73 Cliff W6HDO

On Thu, 6 Jun 1996, Rick Miller wrote:

> Hi!
>
> I was just looking over the 1996 ARRL Handbook description on their
> web pages... it mentioned a VLF transceiver that didn't require a
> license.
>
> Where might I find more details about this equipment and this band?
> I'd like to give it a try if the equipment isn't overly involved.
> (Yes, I know the antenna will be big.)
>
> Didn't "Radio Electronics" have an article like this, where you could
> build a VLF transmitter out of a quad-NAND gate and some BJTs?
>
> It (the ARRL ad) also mentioned a "QRP Transceiver" and a "QRP transmitter".
> What are those?  I don't know that Q-sign.
>
> Rick Miller
> (Was KA9JHH 17 years ago, now I'll finally be going for Tech. Plus in July.)
>
>



From [e-mail] Sat Jun 08 13:01:35 1996
From: [e-mail] (Gregory K Doerschler)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Speaking of the ARRL Handbook...
Date: 8 Jun 1996 03:48:40 GMT
Message-ID: <4pat6o$[e-mail]>
References: <[e-mail]> <[e-mail]>

In article <[e-mail]>, Rick Miller  <[e-mail]> wrote
:
>Hi!
>
>I was just looking over the 1996 ARRL Handbook description on their
>web pages... it mentioned a VLF transceiver that didn't require a
>license.
>
>Where might I find more details about this equipment and this band?


Check out the Longwave Club of America home page at:

                           http://www.anarc.org/lwca/


You should find answers to all your questions there.

                                                     Greg
                                                     N1DEM




From [e-mail] Sat Jun 08 13:01:36 1996
From: [e-mail](John R. Bosco )
Newsgroups: rec.radio.amateur.homebrew
Subject: WANTED: Panel Meter for Heath SWR Meter
Date: 4 Jun 1996 13:55:10 GMT
Message-ID: <4p1f7u$[e-mail]>

An on-air acquantance has a Heathkit HM-2102 SWR meter with a sticky
meter movement.  He has asked me to post a request to possibly locate a
source for a replacement panel meter.

As an alternative, he would like to hear from anyone that may have a
manual for the HM-2102 and could provide the value for the meter so
that he may be able to replace it with an aftermarket part.  Of course,
he would prefer a Heath replacement.

Any help that you can provide will be appreciated,

73,


John, KB2YJH


From [e-mail] Sat Jun 08 13:01:37 1996
From: "Ian White, G3SEK" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: What is the best way to start to build a Tube Amp?
Date: Wed, 5 Jun 1996 07:24:18 +0100
Distribution: world
Message-ID: <[e-mail]>
References: <4ot7gs$[e-mail]>

Kevin  AstirCS "1U"   KO0B wrote:

>You can connect "extra" grids of pentode and tetrode's to
>control grid and "make" a triode if you find a good deal on them.

Oh no you can't - not without risking lots of problems.

Think about it. In most tetrodes, G1 is designed to be operated negative
of the cathode, and G2 several hundred volts positive. Also G1 of a
tetrode is designed with a much smaller dissipation than G2, and will
handle much less current. If you simply strap all available grids
together and apply RF drive, G1 will get much more grive voltage and
current than it needs, and G2 will get much too little. In most cases
the result is an excessive drive requirement, poor intermod performance,
damage to G1 and shortened tube life.

That's the simple explanation. For full details, consult the
characteristics of the tube you're proposing to use, and see what
happens across the whole drive cycle.

It just so happens that the most common post-war tetrodes available to
amateurs (807, 813, 4-125A etc) will sort of tolerate this treatment.
These are actually exceptions, but it has led to the myth that you can
make a triode out of any tetrode. Well, you can't, and at modern tube
prices you may be in for a nasty shock.

The classic case was the NAG linear for 2m, which some cretin "designed"
using a 4CX with both grids grounded. Not a 4CX250 even, but an
expensive 4CX350 which has a zero grid current rating! Tube life was a
few hundred hours maximum before G1 expired, and often much shorter.

>
>Some of the Russian tubes look pretty good.  It may be worth designing
>around these.
 ...except that they're mostly tetrodes.

Tetrodes are wonderful, but they do need well-regulated positive screen-
grid supplies, even if G1 and G2 are both grounded to RF.


73 from Ian G3SEK          Editor, 'The VHF/UHF DX Book'
                          'In Practice' columnist for RadCom (RSGB)
Professionally:
IFW Technical Services     Clear technical English - anywhere.


From [e-mail] Fri Jun 14 12:03:32 1996
From: [e-mail] (KC3TL)
Newsgroups: rec.radio.amateur.policy,rec.radio.amateur.misc,rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.dx,rec.radio.amateur.digital.misc,rec.radio.amateur.antenna
Subject: Re: ! June 96 CD-ROM Available !
Date: 9 Jun 1996 18:47:13 GMT
Message-ID: <4pf67h$[e-mail]>
References: <NEWTNews.834118688.6173.amsoft@dx4_120> <4pa2o9$[e-mail]>

In article <4pa2o9$[e-mail]>, [e-mail] says...
> The far better QRZ disk is available at $12.95
>at many
>outlets.
>73, John KA3DBN
>
>===
>John L. Rouse                  Packet:[e-mail]
>Capital-Gazette Communications Fax: [phone]
>Annapolis, Maryland            Voice mail: [phone] X200
>               =========================
>[e-mail]             [e-mail]
>[e-mail]...........................
>

John;

FACTS:

QRZ added 32 New Programs in the June 1996 Issue
AmSoft added 108 New Programs in the June 1996 Issue

QRZ  June 1996 has a corrupted file "tfhpn101.zip"
AmSoft tests all its files.

QRZ June 1996 has published damaged data in the call sign data
Check out KC8CSF, KC8CYB,KF4GSM, & N3XGK on your QRZ!
These people were all born on 12/31/99? and got a ticket on 12/31/99??
AmSoft notified the FCC of these flaws on April 22.  The FCC fixed them.
It may be a surprise to you, but SAM, BUCKMASTER, & AMSOFT all fixed
the call sign errors before publication this spring , QRZ did not....

So go ahead an spend your $12.95 or the $9.40 they were selling for at Dayton!
You only get what you pay for.....

BTW  I also use the flying horse CD and like it.

Pete, KC3TL



From [e-mail] Fri Jun 14 12:03:33 1996
From: [e-mail] (Steven L. Finberg)
Newsgroups: rec.radio.swap,rec.radio.amateur.misc,rec.radio.info,sci.electronics,ne.forsale,ne.general,rec.radio.amateur.homebrew
Subject: ** FLEA at MIT **     Sunday 16 June        Cambridge MA
Date: 12 Jun 1996 13:07:50 GMT
Distribution: na
Message-ID: <4pmff6$[e-mail]>
Summary: Buy Sell SWAP Ham Radio  Electronics Computers 9AM - 2PM
Keywords: Hamfest Fleamarket SWAPFEST  Computers Ham Radio Electronics

This comming Sunday...

    *** !!!!  WE ARE BACK IN THE GARAGE  !!!!  ****

         so come rain or shine or super heat the Flea is on !!!


*********  $1  buyers discount with hardcopy of this notice ********

COMPUTERS - ELECTRONICS - HAM RADIO - COMPUTERS - ELECTRONICS - HAM RADIO

                  FLEA  all SUMMER at MIT
                     June 16th,  1996
                         9AM-2PM

Come to the city for a great flea - plenty of free parking.

        MIT's  electronics and ham radio flea will take
        place on the third Sunday of each month this summer,
        April thru October.

        There is tailgate space for over 600 sellers and
        free, off-street parking for >1000 cars!

        Buyers admission is $4  (you get $1 off if
        you're lucky enough to have a copy of our ad)
        and sellers spaces are $10.00-each at the gate.

        The flea will be held at the corner of Albany and
        Main streets in Cambridge; right in the Kendall
        Square area from 9AM to 2PM, with sellers set-up
        time starting at 7AM.

        !! RAIN or SHINE !!  Have no fear of rain, a covered
        well illuminated tailgate area is available for all
        sellers (6'8" clearance).

        Talk-in: 146.52 and W1XM/R-449.725/444.725 (PL 114.8/2A).

        Sponsors: MIT Electronics Research Society
                  MIT UHF Repeater Association (W1XM)
                  MIT Radio Society (W1MX)
                  Harvard Wireless Club (W1AF)

        For more info / advanced reservations 617 253 3776

********** $1  buyers discount with hard copy of this notice ************


******************************************************************************
*
Steve Finberg                       W1GSL                      [e-mail]
PO Box 82 MIT Br           Cambridge MA  02139-7082             617 258 3754
******************************************************************************
*


From [e-mail] Fri Jun 14 12:03:34 1996
From: jgoecks <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: A radio link between computers?
Date: 12 Jun 1996 04:56:17 GMT
Message-ID: <4plilh$[e-mail]>
References: <Billy.28.0011F704@don't.bother.sending> <4p2aam$[e-mail]> <4p7imi$[e-mail]> <[e-mail]> <[e-mail]>

Jeff DePolo WN3A <[e-mail]> wrote:
snip
>
>(Scenario)  Assume I'm not a ham.  I buy a pair of SS LAN cards.  I
>connect one side of the link to a machine that has a TNC connected that
>picks up amateur packet traffic off 145.03 using a scanner.  I have all
>monitored ham traffic go across the SS LAN link.  I haven't transmitted
>on 2m, and I'm operating the SS LAN cards under Part 15, so it's cool.
>Then I get my tech license (with code of course ;-) ).  Just because I
>got my ham license doesn't void the Part 15 status (or legality) of the
>SS LAN link.  I do need my ham license to transmit on 2m, of course, but
>not to operate the 900 MHz Part 15 link.  Am I right?
>
snip
>Jeff DePolo  WN3A
>Net: [e-mail]
>Twisted Pair: H:610-337-7383 W:215-387-3059 x300
>RF: 442.1+ 442.2+ 442.4+ 443.45+ 443.8+ 444.15+ linked

You may want to check into the legallity of retransmitting radio traffic under

any conditions.  I think I remember something about confidentiallity in the
FCC regs.



From [e-mail] Fri Jun 14 12:03:37 1996
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: AM Modulation Scheme ??
Date: 5 Jun 1996 01:47:37 -0400
Message-ID: <4p371p$[e-mail]>
References: <[e-mail]>

In article <[e-mail]>,
Clifford Buttschardt <[e-mail]> writes:

>
>Steve you have a classic Heising modulation transformer used years ago.
>The higher current winding starts at the high voltage feed point.  The
>center tap goes to a class A audio modulator tube.  The lower current
>winding is then connected to the RF final amplifier.  Great system--
>works well, can not be overmodulated!  Cliff Buttschardt  W6HDO/K7RR
>
Hi Cliff,
The transformer he has can also be used with the center tap connected to
HV, and a modulator tube at each end. The high current end feeds the PA
through the RF choke.

If fed the way you mentioned, modulation can easily exceed 100% on
negative peaks.
In that way it is superior to a conventional Heising choke modulator with
no dropping resistor between the modulator and the PA. The transformer
offers a 1:2 voltage step-down in the negative modulation direction.
Positive peaks are a problem with that scheme, since the HV rail is at the
end of the autotransformer. It will be impossible to reach 100% positive
modulation without distortion, unless a bypassed dropping resistor is
added between the PA and the modulator.

With the push-pull scheme (two modulator tubes with the HV going to the
CT),  PA modulation is more symmetrical and 100% modulation can be
achieved in both positive and negative directions with low distortion.

73 Tom


From [e-mail] Fri Jun 14 12:03:38 1996
From: William Kresl <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: am7911 modem
Date: 11 Jun 1996 23:31:53 GMT
Message-ID: <4pkvl9$[e-mail]>
References: <[e-mail]>
To: [e-mail]

A less expensive and easier modem to build for
use with the BAYCOM/PMP/EZPACKET software uses
the TEXAS INSTRUMENT TCM3105JL chip. This modem
is programmable for a variety of baud rates and
options. But the 1200baud/half-duplex mode is
used on packet radio. With the addition of a few
components and a crystal, tied into either the
Parallel or Serial port, you are on the air.
The TCM3105JL has been discontinued but they can
still be found at parts houses and in old modem
equipment and TNC's. Good Luck.

Wm Kresl -WB9BBC





From [e-mail] Fri Jun 14 12:03:39 1996
From: Robert <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: auto tuner, AT-11, Jan 96 QST
Date: 10 Jun 1996 23:38:52 GMT
Message-ID: <4pibmc$[e-mail]>

hello all,

can the AT-11 be modified to cover the 6 meter band??  I would like it to
cover the 160-6 meter bands to match my ICOM IC 706

73 de rob n4yhd



From [e-mail] Fri Jun 14 12:03:40 1996
From: [e-mail] (WB3U)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Battery Backup Power?
Date: Mon, 10 Jun 96 05:04:05 GMT
Message-ID: <4pgen4$[e-mail]>
References: <4pbrvv$[e-mail]>

This thread has reminded me of something I haven't thought
about in a long time.

About twenty years ago, I was discussing self-sufficiency
with a friend who was familiar with a number of different
non-electrical technologies.  He had concluded that if one
could obtain all the necessary parts, the best way to generate
and store power on a small scale would be compressed air.

The general concept would be to use a windmill or turbine, but
instead of generating electricity, the unit would turn an air
compressor that would pressurize an underground tank. Because
electricity isn't involved in the generation and storage of
the power, the primary maintenance cost, i.e. storage
batteries, would be eliminated.

The primary drawback to such a system is, of course, how to use
the compressed air to power electrical equipment.  To produce
electricity, a fairly large "air motor" would be required in
order to drive a generator of decent size.

Does anyone know if there have been any developments in this
field, and whether off-the-shelf components are available
for such a system?

73,
Jack  WB3U


From [e-mail] Fri Jun 14 12:03:41 1996
From: [e-mail] (Thomas N Tumino)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Cell Phones as 23cm HAM Radios??
Date: 12 Jun 1996 05:27:00 GMT
Message-ID: <4plkf4$[e-mail]>
References: <[e-mail]>

I haVE found that cell phones can transmit outside of the cell bandplan,
however I have not been able to program a cell phone for use in the 900
ham band.  Please keep me posted on your quest.

I believe hardware modification will be necessary, but I am willing to bet
it isnt too hard and it could yield great resul;ts.
Tom

N2YTF

 Gabe Nemeth
([e-mail]) wrote:
: Thanks for reading this. If I have posted to the wroing group please
: let me know.

: With the advent of the new cell phone technologies such as Satellite,
: the 'older 900 Mhz cell phones' are more-and-more available on the used
: marked (I purchased my Motorola at Dayton for $US 25). I know these cell
: phones are programable, but just how programmable may be the question.
: These units have a display, battery level indicator, some have 5 Watt
: output, keypad entry, to list a few. Motorola has a very high quality
: product, surely these phones (or others) can be reprogrammed for FM HAM
: use.

: Can these cell phones be reprogrammed for the HAM 900Mhz use? If so are
: the resources available to do this? If the bandwidth can be changed
: imagine the packet applications? Or, is this just a loonie idea?
: Cheers,
: '73 de VE3SLJ.


From [e-mail] Fri Jun 14 12:03:42 1996
From: [e-mail] (Eric M. Brombaugh)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Cell Phones as 23cm HAM Radios??
Date: Tue, 11 Jun 1996 21:32:45 -0700
Message-ID: <[e-mail]>
References: <[e-mail]>

In article <[e-mail]>, Gabe Nemeth <[e-mail]> wrote:

> Thanks for reading this. If I have posted to the wroing group please
> let me know.
>
> With the advent of the new cell phone technologies such as Satellite,
> the 'older 900 Mhz cell phones' are more-and-more available on the used
> marked (I purchased my Motorola at Dayton for $US 25). I know these cell
> phones are programable, but just how programmable may be the question.
> These units have a display, battery level indicator, some have 5 Watt
> output, keypad entry, to list a few. Motorola has a very high quality
> product, surely these phones (or others) can be reprogrammed for FM HAM
> use.
>
> Can these cell phones be reprogrammed for the HAM 900Mhz use? If so are
> the resources available to do this? If the bandwidth can be changed
> imagine the packet applications? Or, is this just a loonie idea?
> Cheers,
> '73 de VE3SLJ.

I would be _really_ surprised if this is possible.  To meet the requirements
of the cellular system, the phones need to receive in one frequency range and
transmit in another, similar to the way cordless phones work.  There are no
advantages (and some disadvantages) to designing the Rx/Tx circuits to
operate up above the current highest frequency of ~896 MHz.

My guess is that you would need to do some serious re-arranging of the
Rx/Tx system in the cell phone to get it to work in the Ham bands - probably
not worth it.

I hesitate to mention this, but if you're looking for info on reprogramming
cell phones, the current issue of 2600 has some rather detailed info on
reprogramming various models of Motorola cell phones.  I have no idea how
reliable this is and I certainly don't advocate using this for illegal
purposes, but if you have one of these phones it could be helpful.

--
Eric Brombaugh     KC7GXA
[e-mail] (private)
[e-mail]   (work)


From [e-mail] Fri Jun 14 12:03:43 1996
From: Zack Lau <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Expirimental Microwave Transmissions
Date: Tue, 11 Jun 1996 09:51:24 -0400
Message-ID: <[e-mail]>
References: <4oi13i$[e-mail]> <[e-mail]>
To: Brian Olliver <[e-mail]>

Brian Olliver wrote:
>
> please be careful the frequency of microwave ovens is chosen
> so that it will impart maximum power into anything containing water

I believe this qualifies as a factoid.  The lowest water absorbtion
frequency is actually a little below our 24 GHz band.

The frequency is based on 3 factors.
1--Got to keep the RF from leaking out of the oven (door seals).
2--Can't interfere with authorized services.
3--Has to cook food all the way through.

The old ovens were in the 915 MHz ISM band and moved to
2.4 GHz for better door seals.  You can actually cook hot
dogs with a 200 watt 2M amp if you put it in a cavity and
tune it up.

Zack Lau KH6CP/1
Anyone for 24 GHz FD skeds? (LOS to Mt Wachusett, FN42BL)


From [e-mail] Fri Jun 14 12:03:44 1996
From: [e-mail] (Stephen Muther)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Gunnplexers
Date: 10 Jun 1996 12:11:38 -0700
Message-ID: <4phs1a$[e-mail]>
References: <[e-mail]> <4pet6j$[e-mail]> <4php08$[e-mail]>

In article <4php08$[e-mail]>,
Kevin  AstirCS "1U"   KO0B <[e-mail]> wrote:
>
>>I believe someone suggested the gunn units used in motion detectors.
>>I would shy away from these in a 10Mb application.  Directly modulating
>>a Gunn diode barely results in good video for my ATV applications.
>>High speed data would be even more demanding.
>
>N6GN said you need to remove a de-coupling cap from across the gunn
>diode,  mounted inside the 'plexer.  You did this, right?
>
>

Yes, that was an obvious fix.  The limitation is the limited mod. index
you can acheive by modulating a Gunn directly.  That, in combination
with the simultanious AM and FM modulation which results makes a
real mess out of your digital modulation ( and in my case video ).


Steve M.



From [e-mail] Fri Jun 14 12:03:45 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Ham-Homebrew Digest V96 #260
Date: 13 Jun 96 11:39:02 GMT
Message-ID: <[e-mail]>
References: <199606121130.EAA14937@.mail.ucsd.edu>

uuufffff ..... who invented English language ?
---------
h e l p . . .
what is the difference betwen:

- powdered iron cores
- ferite cores
---------
hough!
bye, DD. +


From [e-mail] Fri Jun 14 12:03:46 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Ham-Homebrew Digest V96 #260
Date: 13 Jun 96 11:43:59 GMT
Message-ID: <[e-mail]>
References: <199606121130.EAA14937@.mail.ucsd.edu>

how to find "tempath.exe" on the internet?

I have limited e-mail access only ....
can you use some big machine to find tempath.exe? (i'ts UK made!)
bye, DD. +


From [e-mail] Fri Jun 14 12:03:47 1996
From: Jon Jenkins <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Help me build .001 microhenry strip line inductor
Date: 12 Jun 1996 21:23:53 GMT
Message-ID: <4pnch9$[e-mail]>
References: <[e-mail]>
To: [e-mail]

You can use either strip or wire

Tell me some more info like

frequency
board charactersitics like Er, thickness etc
Q required

For wire in free space ~ 0.5-1nH/mm  is a good guide

Jon
---------------------------------------------------------
Name:      Academic Technologies       Bongaree Rd,
Voice/Fax: [phone]         Terranora,
Inet:      [e-mail]    NSW, AUSTRALIA 2486
Web:       http://www.onthenet.com.au/~academic
My 3 year old son: "Daddy, why did God put the dinosaurs here first ?"
My 6 year old daughter: "To make it interesting for us!"...think about it
!!
----------------------------------------------------------




From [e-mail] Fri Jun 14 12:03:48 1996
From: Jon Jenkins <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Help me build .001 microhenry strip line inductor
Date: 12 Jun 1996 21:18:51 GMT
Message-ID: <4pnc7r$[e-mail]>
References: <[e-mail]>
To: [e-mail]

You can use strip or wire. Tell me some more info
like frequency, board material charactersitics
(i.e. size, thickness, Er, etc), Q required
and I will work it out for you.

Jon

---------------------------------------------------------
Name:      Academic Technologies       Bongaree Rd,
Voice/Fax: [phone]         Terranora,
Inet:      [e-mail]    NSW, AUSTRALIA 2486
Web:       http://www.onthenet.com.au/~academic
My 3 year old son: "Daddy, why did God put the dinosaurs here first ?"
My 6 year old daughter: "To make it interesting for us!"...think about it
!!
----------------------------------------------------------




From [e-mail] Fri Jun 14 12:03:49 1996
From: [e-mail] (William J. Graham)
Newsgroups: rec.radio.amateur.homebrew
Subject: Help need chip data
Date: 14 Jun 1996 11:19:52 GMT
Message-ID: <4prhso$[e-mail]>
Reply-To: [e-mail] (William J. Graham)


Subject:  Help need chip data
help!

Need someone with an IC data book to tell me if
the 4511 decoder/latch/display driver chip is for
common anode or common cathode leds?

thanks

Bill
N5LMX/DA1WG
[e-mail]
--
Never Thirst !
"My head hurts, my feet stink and I don't love Jesus!"- J. Buffett


From [e-mail] Fri Jun 14 12:03:50 1996
From: "J÷rgen J÷nsson" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: How do i calculate where i should tap my coil
Date: 6 Jun 1996 13:12:00 GMT
Message-ID: <4p6lf0$[e-mail]>

For example if i make an coil for a preamplifier and i want to
use an tuned coil for only that frequency
how can i calculate where to tap my coil

please send answer to me :[e-mail]



From [e-mail] Fri Jun 14 12:03:51 1996
From: Bob Liesenfeld <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: How do i calculate where to tap my coils
Date: Mon, 10 Jun 1996 14:57:53 +0600
Message-ID: <[e-mail]>
References: <4p8ouv$[e-mail]>

J÷rgen J÷nsson wrote:
>
> if you know how to calculate how and where to tap my coils
>
> pse [e-mail]  What coils? What kind of coils. Toroids? Mor
e info please.

   Bob L.     [e-mail]


From [e-mail] Fri Jun 14 12:03:51 1996
From: "J÷rgen J÷nsson" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: HOW to Calculate COIL TAP
Date: 7 Jun 1996 08:20:45 GMT
Message-ID: <4p8oot$[e-mail]>
To: ALL

How do i calculate where to tap my coils !?

Please send a mail if you know how !

[e-mail]



From [e-mail] Fri Jun 14 12:03:52 1996
From: Robert Masucci <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: How to reach Anzac Corp
Date: Tue, 11 Jun 1996 17:00:38 -0400
Message-ID: <[e-mail]>

Does anyone know what happened to Anzac corp?
They were a division of Adams-Russell and made a nice 50-to75 ohm
transformer.

Bob Masucci
[e-mail]


From [e-mail] Fri Jun 14 12:03:53 1996
From: [e-mail] (Donald E. Turner)
Newsgroups: rec.radio.amateur.homebrew
Subject: HP 4805A Vector Impedance Meter
Date: 11 Jun 1996 03:41:32 GMT
Message-ID: <4piptc$[e-mail]>

I recently purchased an HP 4805A for a very good price. One problem is
there was no probe or manual with the deal.

I have some experience using this piece of gear and remember the probe
having some active circuitry. This will have to be found and purchased or
built.

The question is, does anyone have a manual from which I could get some
information. Please send mail if you have information on this piece of
gear or a manual.  Thanks........Don Turner WA6WRX



From [e-mail] Fri Jun 14 12:03:54 1996
From: [e-mail] (VINY N1VC)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: HP 4805A Vector Impedance Meter
Date: 11 Jun 1996 19:12:04 -0400
Message-ID: <4pkug4$[e-mail]>
References: <4pifin$[e-mail]>
Reply-To: [e-mail] (VINY N1VC)


I do have a manual for the thing, because I was interested in obtaining a
unit myself. From as far as i can see, the critical element is the probe.
Without it the unit is worthless. After looking at the circuitry of the
probe, I can't see an easy way for a hobbiest to construct it.

I would be interested in selling you the manual if you are still
interested.


From [e-mail] Fri Jun 14 12:03:55 1996
From: "William E. Sabin" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Inductors?!
Date: Tue, 11 Jun 1996 16:31:40 -0700
Distribution: world
Message-ID: <[e-mail]>
References: <4p5361$[e-mail]> <[e-mail]> <4pbi6h$[e-mail]> <[e-mail]> <4pkbma$[e-mail]>

Dana Myers wrote:
>
> In article <[e-mail]>,
> William E. Sabin <[e-mail]> wrote:
> >Roy Lewallen wrote:
> >>
> >> Amidon is, or *WAS*, a reseller -- they don't manufacture cores. Unless
> >> something has changed in the past several years, the powdered iron cores
> >> they sell are manufactured by Micrometals; the ferrite cores by Fair-Rite
.
> >> They've always used the part numbering scheme of these two manufacturers.
> >
> >
> >I have bought cores from Amidon just in the past week, and a 1995 edition
> >of their detailed manual, so they seem to be very much in business.  Does
> >someone believe they are on the way out of business?
>
> Amidon was once run out of the Amidon house garage (I've been there
> a few times).  They've sold the business, and it changed address
> several times over a few years before settling down where it is now.
> This made some people think they were defunct, when, in fact, they
> still offer excellent service (at least in my experience).
>

Quite true, and they are very accommodating to amateur small qty buyers
like me.

Bill


From [e-mail] Fri Jun 14 12:03:56 1996
From: David Ward <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Info Wanted On Old Radio
Date: Sat, 08 Jun 1996 13:06:53 -0400
Message-ID: <[e-mail]>

I'm wondering if anyone has any info on the following radio:

Manufacturer  Pye Electronics
Model         G-F60 FM.V  (It's hard to read the "G", may be something
                           else.)
Power         110V Power Input
Type          294561/1
DOT Approval  104264119

This is a fairly old (but seems to be all solid state) unit that was
purchased at a charity auction about a year ago. Any information
(original use, frequency, power, etc) would be appreciated.

Thanks.

Dave  VE3BIP


From [e-mail] Fri Jun 14 12:03:57 1996
From: PAUL MULLINER <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Info WANTED!  Kenwood TS440s to PC RS232
Date: Thu, 13 Jun 1996 09:10:20 +0100
Message-ID: <[e-mail]>
References: <[e-mail]>
Reply-To: [e-mail]

Hi I,ve almost cracked this pc link to the Kenwood TS440sat
I dont have the IC-10 manual from kenwood that supports the two chip
upgrade! I fitted the chips myself.  I need to know the correct BAUD
BIT, STOPBIT and PARITY for the RS232 PLease....................
Many thanks got to all those supplying info on the interface
Regards PAUL.........................73's
--
*****************************
* Paul Mulliner             *
* Barnsley, Yorkshire, UK   *
* [e-mail] *
*****************************



From [e-mail] Fri Jun 14 12:03:58 1996
From: [e-mail] (Casy Jones)
Newsgroups: rec.radio.amateur.homebrew
Subject: Looking for "Fast-On" Tabs . . . .
Date: Thu, 13 Jun 1996 12:19:18 GMT
Message-ID: <4pp1gj$[e-mail]>

Got a project using double row, .250 inch wide, male
"Fast-On" tabs.  Used to get them from a local
surplus house but their supply has dried up.  Approached
manufacturers who are all happy to tool up for 10,000
pieces but not interested in selling me only a 10 year
supply!!!!

I've mailed an inquiry to all the big names in electronics
surplus . . . Hosfelt, MP Jones, etc.  I gotta believe
that what I'm looking for is probably in stock in great
abundance  . . . somewhere.  Is anyone aware of local
storefront surplus stores that I could write to?

I can use either continuous reels or segments of 6 or
more pairs of tabs.  They need to have a single, clean
hole between the tabs . . i.e. these get sweat-soldered
to a brass sheet.  Can't use the type that are "self
riveting" to an etched circuit board for this project
although I would be interested in that type for another
project.

A name/address/zip of your favorite "junque" store would
be appreciated!

  Bob . . .

  K0DYH since 1956 . . been at it for 40 years this year!



From [e-mail] Fri Jun 14 12:03:59 1996
From: [e-mail] (Carl Hodder)
Newsgroups: rec.radio.amateur.homebrew
Subject: Looking for a GE 8950 tube or equivalent
Date: 10 Jun 1996 20:20:46 GMT
Message-ID: <4pi02u$[e-mail]>

Looking for a GE 8950 tube.

What other tubes are substitutes for the GE (General Electric) 8950 tube?



From [e-mail] Fri Jun 14 12:04:00 1996
From: [e-mail] (david james)
Newsgroups: rec.radio.amateur.homebrew
Subject: Looking for HR-2600 Transverter Mods
Date: Tue, 11 Jun 1996 13:27:02 GMT
Message-ID: <4pjhto$[e-mail]>

Greetings,

QST published some info on the 2510 but I'm looking for 2600 stuff.
The QST article specifically stated the mods apply to the 2510 not the
2600. Purchased the unit second hand so I do not have any docs
(schematics) yet.

Thanks

Dave




From [e-mail] Fri Jun 14 12:04:00 1996
From: "Lee, Kwangweon HL1MNU / KE6WQK" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Looking for TNC2 Schematic Diagram
Date: Tue, 11 Jun 1996 09:09:18 -0700
Message-ID: <[e-mail]>
Reply-To: [e-mail]

Does anybody know where to get it?

Thanks in advance,
--
Lee, Kwangweon ( HL1MNU / KE6WQK )

Address: 10501 N. Tantau Av. Loc.201-01 Cupertino, CA 95014-0728 USA
Phone:   [phone], Fax: [phone]
E-mail:  [e-mail] | [e-mail]
         [e-mail]  | [e-mail]


From [e-mail] Fri Jun 14 12:04:01 1996
Newsgroups: rec.radio.amateur.homebrew
From: [e-mail] (Dave Kirkby)
Subject: Microwave ovens - anyone know the HT ???
Message-ID: <[e-mail]>
Date: Thu, 6 Jun 1996 09:34:21 GMT
Reply-To: [e-mail]

Has anyone ever measured the HT of a microwave oven ? I see the replacement ma
gnetrons
in RS seem to have a maximum of 4.1 kV, but I was hoping that a scrap microwav
e
might be a source of an HT tranny for a 4CX250 or 350. Perhaps they are all ar
ound
4 kV, in which case I'll have to look elsewhere. Anyone got a 1500 to 2100 V t
ranny
they want to sell ?

---
Dave Kirkby G8WRB
Dept of Medical Physics,
University College London,
11-20 Capper St,
London WC1E 6JA
Tel: [phone]
Fax: [phone]







From [e-mail] Fri Jun 14 12:04:02 1996
From: [e-mail] (DH)
Newsgroups: rec.radio.amateur.homebrew
Subject: NEED PLANS FOR 432MHZ ONMI ANTENNA
Date: Tue, 11 Jun 1996 07:03:26 GMT
Message-ID: <4pj5rh$[e-mail]>

Hello,
  Looking for plans to build a broad band Onmi Antenna for 430Mhz.  I
plan on building 4 of them for ATV use.  Please email me.


[e-mail]




From [e-mail] Fri Jun 14 12:04:03 1996
From: Erik Finskas OH2LAK <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: NEOSID coils
Date: Mon, 10 Jun 1996 15:24:45 +0100
Message-ID: <[e-mail]>

Do you know where else than Eisch electronics in Germany are NEOSID
coils available??

Or is there anywhere a table of Neosid coils, their inductances etc.

Erik
--
Erik Finskas M1AAJ & OH2LAK
Email [e-mail]
      [e-mail]
University of Portsmouth, UK
Department of Electric and Electronic Engineering


From [e-mail] Fri Jun 14 12:04:04 1996
Newsgroups: rec.radio.amateur.homebrew
From: [e-mail] (Jeroen Belleman)
Subject: Re: NEOSID coils
Message-ID: <[e-mail]>
References: <[e-mail]>
Date: Thu, 13 Jun 1996 11:36:28 GMT

In article <[e-mail]>,
Erik Finskas OH2LAK  <[e-mail]> wrote:
>Do you know where else than Eisch electronics in Germany are NEOSID
>coils available??
>
>Or is there anywhere a table of Neosid coils, their inductances etc.

There used to be representative in the UK, but I'm not sure they still
exist:
Neosid Ltd.
Icknield Way West
Letchworth
GB-Hertfordshire
SG6 4AS England
Tel. [phone]
Fax  [phone]

If you can't get in touch, ask again. There are plenty of addresses
in my copy of the data booklet.

Good luck,
Jeroen Belleman
[e-mail]


From [e-mail] Fri Jun 14 12:04:05 1996
From: Anders Hagen <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Reflex Clystron
Date: Mon, 10 Jun 1996 15:08:57 +0200
Message-ID: <[e-mail]>

Seeking pinout data for Reflex Clystron tube VA-417c from VARIAN

Please e-mail:

[e-mail]


From [e-mail] Fri Jun 14 12:04:06 1996
From: [e-mail] (TIEMANN BRUCE)
Newsgroups: rec.radio.amateur.homebrew
Subject: Rochelle salt crystal growing
Date: 12 Jun 1996 18:13:34 GMT
Message-ID: <4pn1ce$[e-mail]>

From [e-mail] Wed Jun 12 11:52:46 MDT 1996

>Is anyone familiar with crystal growing?  I am interested in crystals for
>headsets for use wth crystal radios.  I would appreciate any info or
>references. TIA!  -Gerry

An excellent book is "Crystals and Crystal Growing" by Alan Holden and
Phyllis Singer (she might have a new last name by now; my book was pretty
old) which gives thorough descriptions of, well, crystals and crystal
growing.  Besides setting up general principles (excellently), the book
also provides specific how-to recipes for a dozen water-soluble salts, and
Rochelle salt is one them.

I've grown that one myself.  It grows fast and well if conditions are
right, but the stuff has such a high temperature dependence of solubility
that "right conditions" mean mostly a pretty damn stable temperature; the
book goes into this.  During a lucky spell in weather - I didn't have a
temp. comtroller - I got a crystal just smaller than a roll of 35mm film
in four or five days of growth.

Once.

Bruce
N6URH


From [e-mail] Fri Jun 14 12:04:07 1996
From: Tom Turnbull <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew,rec.radio.shortwave
Subject: Re: Synchronous AM detectors
Date: Mon, 10 Jun 1996 12:49:56 +0000
Message-ID: <[e-mail]>
References: <[e-mail]>

In article <[e-mail]>, Nick Button
<[e-mail]> wrote:

> Hi,
>
> Does anybody know of any circuits for add-on synchronous detectors for
> AM broadcast reception ?
>
> I keep reading how wonderful they are supposed to work but I'd like to
> put one together and try it myself before I shell out cash on buying a
> new RX...
>

You probably will have seen this by now but this months ( July 1996 )
edition of
HAM RADIO TODAY has a construction project for an add-on synchronous detector.

I am thinking about building this into a small superhet I will be building
later in the year when I may have more time.

If you build this or any other synch detector I would be interested in how
you rate it.

Check the HAM RADIO TODAY web page at:

      http://www.netlink.co.uk/users/hrt/

Tom.

________________________________________________________________________
    /////// ///////  ,///,    Tom Turnbull
     ///     ///    /// //    University of Durham
    ///     ///     \\\       I T Service
   ///     ///   // ///       Science Site, South Road  Tel: [phone]
///////   ///    '///'        DURHAM, DH1 3LE, England  FAX: [phone]
________________________________________________________________________



From [e-mail] Fri Jun 14 12:04:08 1996
From: [e-mail] (Vesta Technology)
Newsgroups: rec.radio.amateur.homebrew
Subject: Want to use optocoupler as RF tranformer
Date: 7 Jun 1996 22:40:04 -0600
Message-ID: <4pb074$[e-mail]>

(The following are solely my own opinions and not those of my employer -
 Andrew Jonathan Fine - WA2JAZ)

TWIMC,

I've been wanting to experiment with direct conversion receiver circuits,
and I had the possible idea, maybe a crazy one, that perhaps an
optocoupler (eg... a chip with a photodiode on one side, and a
photodarlington on the other) of today's technology could pass a 1.8 to
4.0 Mhz small RF signal.

I recently read of an EDN article that used an Op amp on one side of
an optocoupler to expand the usable bandwidth from kilohertz to
submegahertz.  I was wondering if the circuit experts out there would
be willing to render thier opinion on using standard bipolar or fet
amplifiers to expand the usable bandwidth of an optocoupler into low RF.

I think the big advantages of using an optocoupler rather than a transformer
for interstage coupling would be as follows:

1)  The diode side could be used as part of the product detector, with
   the darlington side getting the rectified AF signal emitted as light
   from the diode.

2)  It might increase the stability of a VFO circuit if used as coupling
   between the VFO and mixer.

3)  Circuit might be less sensitive to stray inductances since we cut down
   on wire transformers, because we are using "photonic transformers"
   instead.

Opinions?

Thanks in advance!





From [e-mail] Fri Jun 14 12:04:09 1996
From: [e-mail] (Roy Lewallen)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Want to use optocoupler as RF tranformer
Date: Sun, 09 Jun 96 23:45:53 GMT
Message-ID: <4pfnlv$[e-mail]>
References: <4pb074$[e-mail]>

I've designed the audio amplifier in my direct conversion receivers to have
a 50 ohm input, so no transformer or other matching is required between it
and the diode-ring mixer.

A critical characteristic of DC receivers is immunity from AM demodulation.
This requires good mixer balance and stong signal-handling capability. If
your method sacrifices these, I'd say that the trade is a poor one.

Roy Lewallen, W7EL


From [e-mail] Wed Jun 19 21:16:31 1996
From: [e-mail] (Joel Govostes)
Newsgroups: rec.radio.amateur.homebrew
Subject: 6 METER AM / questions
Date: Sun, 16 Jun 1996 10:46:43 -0500
Message-ID: <[e-mail]>

Where is 6m am activity usually found?  50.2?  Calling freq.?
How about 2m am, if it's ever used anymore?  What freq.'s?

Regarding antennas, would a ground plane or horizontally polarized antenna
be best for 6m band openings when using this mode?  From what I
understand, antennas for weak-signal ssb/CW are horizontally polarized;
not sure what would be appropriate for am/dx.  Thank you, 73
(pse reply to [e-mail])               N1AEP


From [e-mail] Wed Jun 19 21:16:33 1996
From: [e-mail] (Woody White)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: 6 METER AM / questions
Date: Mon, 17 Jun 1996 06:54:52 GMT
Message-ID: <4q2hpc$[e-mail]>
References: <[e-mail]>

[e-mail] (Joel Govostes) wrote:

>Where is 6m am activity usually found?  50.2?  Calling freq.?
>How about 2m am, if it's ever used anymore?  What freq.'s?

>Regarding antennas, would a ground plane or horizontally polarized antenna
>be best for 6m band openings when using this mode?  From what I
>understand, antennas for weak-signal ssb/CW are horizontally polarized;
>not sure what would be appropriate for am/dx.  Thank you, 73
>(pse reply to [e-mail])               N1AEP

50.125 MHz is the national calling frew for SSB.
Most activity is from there to about 50.250.

Horz. pol is typ used for CW/SSB, Vert for FM.
Polarization can make big difference for local
work, but for dx openings is less important, it
can shift during propagation.


de  Woody (WB4QXE) -  [e-mail]

Electron Microscopist/Microanalysist,
Ham radio "homebrewer", shade tree mechanic,
'90 Nissan 240SX, wish still had my Mcycle too!



From [e-mail] Wed Jun 19 21:16:34 1996
Newsgroups: rec.radio.amateur.homebrew
From: [e-mail] (Gary Coffman)
Subject: Re: A radio link between computers?
Message-ID: <[e-mail]>
Reply-To: [e-mail] (Gary Coffman)
References: <Billy.28.0011F704@don't.bother.sending> <4p2aam$[e-mail]> <4p7imi$[e-mail]>
Date: Fri, 14 Jun 1996 14:07:03 GMT

In article <4p7imi$[e-mail]> [e-mail](Glenn Spa
rks) writes:
>If you want to do it right, buy 902 Mhz Spread Spectrum Lan cards, runs
>about 2.5 Mb/sec and has a range of a couple of miles, and requires no
>license.  A bit costly though.
>
>This is the type of technology I was hoping the new breed of Ham would
>bring to the hobby, but it looks like it has to be from commercial
>vendors right now.

Considering the *severe* restrictions on SS operation in the amateur
regulations, you shouldn't be surprised that amateurs haven't done
much with SS.

Gary
--
Gary Coffman KE4ZV          |    You make it,     | Due to provider problems
Destructive Testing Systems |    we break it.     | with previous uucp address
es
534 Shannon Way             |    Guaranteed!      | Email to [e-mail]
Lawrenceville, GA 30244     |                     |



From [e-mail] Wed Jun 19 21:16:35 1996
From: Michelle Nicolls <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: ATV Homebrew???
Date: 15 Jun 1996 05:44:41 GMT
Message-ID: <4ptik9$[e-mail]>

Does anyone have any ideas for low power(<.5 watt) ATV transmitters
or downconverters? Just bought a used camera and am looking for a
cheap, fun way to get started. Any help welcome.

              TNX, Troy. KE6QMX


From [e-mail] Wed Jun 19 21:16:36 1996
From: [e-mail] (Woody White)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: ATV Homebrew???
Date: Sun, 16 Jun 1996 07:33:08 GMT
Message-ID: <4pvvl6$[e-mail]>
References: <4ptik9$[e-mail]>

Michelle Nicolls <[e-mail]> wrote:

>Does anyone have any ideas for low power(<.5 watt) ATV transmitters
>or downconverters? Just bought a used camera and am looking for a
>cheap, fun way to get started. Any help welcome.

>              TNX, Troy. KE6QMX

Troy ,  Michelle ???   Check your signiture....

Anyway....  I have 'brewed ATVs for 426 AM modulated and 900 FM.  The
900 FM is actually built in the basket area of an old camcorder....
Let me know which you are interested in and I can supply more
details....


de  Woody (WB4QXE) -  [e-mail]

Electron Microscopist/Microanalysist,
Ham radio "homebrewer", shade tree mechanic,
'90 Nissan 240SX, wish still had my Mcycle too!



From [e-mail] Wed Jun 19 21:16:37 1996
From: Woody White <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Battery Backup Power?
Date: 8 Jun 1996 12:52:29 GMT
Message-ID: <4pbt2d$[e-mail]>
References: <4pbrvv$[e-mail]>

Bill Meara <[e-mail]> wrote:
>I'm trying to throw together a little backup power system that would be
>capable of running a small TV and maybe a couple of light bulbs.  I have
>a little "RECOTON" 220 Watts inverter (12 vdc to 110 Volts AC).  I also
>have a couple of 5 AMP 13.8 VDC power supplies.  I was thinking about
>buying a deep cycle 12 volt battery and combining these components to
>make a little system that will keep the house lit up and the TV on during
>Santo Domingo's frequent blackouts.
>
>Can anyone suggest an easy way in which I can work out a charging
>arrangement for the battery?  It doesn't have to be automatic - we could
>manually shut off the charging voltage.
>
>Will this system work?  Any suggestions would be much appreciated.
>
>
>73    Bill    N2CQR/HI8
>

You may also try posting to: alt.solar.photovoltaic  for more info...

I have wondered about finding/using discarded UPS sys for PCs. Haven't
checked around...

There are smart battery charger chips out there, believe QST had article
in past few years... cannot locate...  You might check out Maxim chip:
MAX712/MAX713.  Last know # 800 998-8800  Sunnyvale, CA   USA

73 Woody  WB4QXE



From [e-mail] Wed Jun 19 21:16:38 1996
From: Steve Roberts <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Cell Phones as 23cm HAM Radios??
Date: 17 Jun 1996 22:21:51 GMT
Message-ID: <4q4lq0$[e-mail]>
References: <[e-mail]> <[e-mail]>


> Regarding the post on cell phone conversion
to 23 cm, I've bought several units with that
idea in mind. Unfortunately while they are great
sources of RF parts and have a nice 7 watt
amp module, (in the larger units) the VCOs
in the phase lock loop are for low side injection and
I've found with some experimentation that they usually
range from 730-854 Mhz. Most cell phones do not use a
standard off the shelf phase lock loop chip that you can
get docs for. What I did find interesting was
using a cheap CMOS TV tuner chip, the vcos from the cell phone
and a NTE 851 series TV tuner prescaler and a simple low pass filter,
a recent microwave column in 73 magazine had a good example of how to do
this only using a TV tuner lo as the VCO. Some older cell phones,
(the big Rola underseat monsters) have a neat 45 Mhz IF board, and by
mixing the cell phone VCO with 100 Mhz, you could make a nice unit,
by scavenging the phone for parts, but the newer units have fixed ceramic
filters that will not let you go out of band. Older base station units have
a 900 mhz capable tuned cavity filter that was quite useful and went right to
922.

 Some really old phones use a 380 to 432 mhz oscillator module, and this
ran into a doubler module. This worked quite well when the 432 module was repl
aced
by a biz band rig programmed for 450 and up


 The power amps use a few milliwatts of RF in and if you derate them from thei
r
7 watt power rating they go right up to say two watts at 900. They need a dc b
ias to set power, email me for details.






From [e-mail] Wed Jun 19 21:16:39 1996
From: [e-mail] (Bill Ewing)
Newsgroups: sci.electronics.repair,sci.electronics.design,rec.radio.amateur.homebrew
Subject: Re: Desoldering Guide
Date: Tue, 18 Jun 1996 16:13:14 GMT
Message-ID: <4q6a2m$[e-mail]>
References: <4q2mie$[e-mail]>

>YOUR COMMENTS ARE INVITED!

>I would like to hear from anyone who has experiences to share.
>I would especially like to know more about:
>  - heated Soldapullt-like devices;
>  - vacuum desoldering stations (Hakko, Pace, etc.)
>neither of which I have ever had the opportunity to try.

Mike : Great post. You've clearly outlined the important stuff. Wish I
could have read that a few years ago! I've never worked with hot air,
mostly because of a concern for the normal lack of control. But I just
ordered a Pace Thermojet (for soldering only, really)

>NOTES ON DESOLDERING

>WHICH TECHNIQUE IS BEST?  I use the hot air gun for ICs with 16 pins or
>more, the Soldapullt for smaller devices.


>c. Quickly re-melt each of the joints and add a small amount of solder
>   to it.  This adds some much-needed flux; it also ensures that you
>   have melted through any protective coating on the surface that would
>   otherwise interfere with heat transfer.

  I think an important factor here is that as it ages, solder
oxidizes, and the oxidized solder doesn't flow. Adding new solder
dilutes the mix, and breaks up the micro-chunks.

>a. Don't be shy about letting the tip of the Soldapullt touch the tip
>   of the soldering iron.  It's unavoidable, and so long as the area of
>   contact is not large, it doesn't do any harm.

  For this reason, I used to apply heat on the component side, and
suck from the bottom. But these days, we use heated solder suckers.

>Does the IC get too hot?  Apparently not:

>  - Many ICs come out with some of the solder, higher up on their pins,
>    still unmelted; that tells me they did not get as hot during
>    desoldering as during original installation.

  Again, some of this may be oxidized solder. But I think that with
your experience, you're probably controlling the heat and the chips
are OK.



From [e-mail] Wed Jun 19 21:16:40 1996
From: [e-mail] (Roy Lewallen)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Empirical HF Receiver (long)
Date: Sat, 08 Jun 96 09:40:42 GMT
Message-ID: <4pbhp8$[e-mail]>
References: <[e-mail]> <4p9vrf$[e-mail]>

In article <4p9vrf$[e-mail]>,
   [e-mail] (WB3U) wrote:

>I am also experimenting with monolythic capacitors as
>replacements for NPO discs, but I'm concerned about their
>dielectric stability.  Does anyone know if the
>characteristics of these capacitors is likely to change
>significantly with age?

Monolithic capacitors are very widely used in industry, including by test
equipment manufacturers who are very sensitive to reliability issues. I
used monolithic NP0 capacitors in the oscillator of my little "Optimized"
transceiver built about 1979, and several other rigs built since then. If
any of the oscillators drift more than when they were built, the change
hasn't been enough to notice.

Roy Lewallen, W7EL



From [e-mail] Wed Jun 19 21:16:42 1996
From: Robert Mansfield <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Frequency Standard
Date: Mon, 17 Jun 1996 19:31:48 -0500
Message-ID: <[e-mail]>
References: <4q2ee3$[e-mail]>

[e-mail] wrote:

 Some time ago I received many correspondence speaking of Frequency
accuracy anf how to get it best.
 Since then I have stripped 3.58 color burst off network, Loran 'C' from
Nantucket and WWV.
 For CCW or Spread spectrum purposes, what type do you
prefer/use/reccomend.

 I'm thinking that Network Color burst say from ABC or any network
available to both parties involved
 via cable or terrestrial is the way to go..  As long as both parties
are using same reference, does it
 matter if it's not 10-14th??

 Planning to phase lock my 10ghz brick and LowFer Beacon..  What should
we use??

 Dave Riley  AA1A

 [e-mail]

The burst that you get from off the air network feed is nolonger that
good a most stations now use a frame syncronizer with there net feeds
so that the best frequency accuracy is that of the local sync generator.

Bob Mansfield
WA8USR


From [e-mail] Wed Jun 19 21:16:43 1996
From: [e-mail] (D.W.Hemphill KC5NG)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Good CB to Convert to 10m FM?
Date: 17 Jun 1996 22:24:01 GMT
Message-ID: <4q4lu1$[e-mail]>
References: <4pmmpt$[e-mail]> <[e-mail]> <[e-mail]>

(snip)
>You can use modified commercial or CB radios in the amateur bands if you
>have an amateur license, but you can't modify any radio to operate in a
>commercial or CB bands. Radios for non-ham bands generally need to be FCC
>type-accepted, which a radio you modified would no longer be. Amateur
>radios don't need to be type-accepted, so you can make/modify your own
>radio for use in the ham bands.

You are correct on the above.  Modifying ham gear to work CB is a no-no!

>As far as Mark's question, I have an old Uniden Cobra 148 that I've been
>wanting to convert to 10M. They're readily available and the schematics
>are easy to find also. I'll have to select a few new components in the RF
>section because it's not going to work too well 2MHz out of band, but I
>think it's reasonable to do it with this radio. It only outputs 5 watts
>(all the cheaper CBs will put out around 3 watts), so it will be my QRP
>radio in a couple of years when 10m opens up.

Bill, I have converted literally DOZENS of CB rigs to 10m over the past
19 years I've been a ham.  Never once have I found a need to modify the
RF section (or any other section) to make it perform 100 percent on 10m.
You'd be surprised at how broad-banded these things are, and how far you
can tune 'em with very little effort.  Most can be tuned for anything
from 22 to 30+ MHz.  I've helped friends convert CBs to 12 meters (that's
24.9 MHz for those who didn't know) and only a re-tune was required to
make 'em work (plus the usual crystal changes, of course).  Also, what-
ever the power output was on 11m, it will be on 10m.  A typical SSB CB
rig will put out between 10 and 15 Watts PEP, and it will do the same
after 10m conversion.  If your Cobra 148 is only putting out 5 Watts on
SSB, it either desparately needs alignment, or something's wrong with
the transmitter section, or perhaps both.

You'll be pleased with the Cobra 148's performance on 10m.  I ran one
for several months during the last sunspot cycle, and I worked all over
the world with it.

73 de KC5NG



From [e-mail] Wed Jun 19 21:16:45 1996
From: Dave Hockaday <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Good CB to Convert to 10m FM?
Date: Thu, 13 Jun 1996 15:59:05 -0700
Message-ID: <[e-mail]>
References: <4pmmpt$[e-mail]> <4pp2kj$[e-mail]>

> >I'm looking for a CB that would be relatively easy to convert to
> >10m FM. I have the usual equipment, etc. This would be my first
> >attempt and I don't know much about the different CB gear available.
> (snip)
>  Mark,
Hi Mark. I've found the 23 or 40 channel Hygain boards to be easy to
convert. The ones that use a PLL02A pll IC and 3 xtals (10.240 and 10.595
mhz and a 3rd I can't remember at this moment). They have a greenish PC
board and were made for Hygain, Midland, Kraco (K-Mart), etc. They're
pretty easy to spot around hamfests, flea markets, yard sales, etc. The
newer CB rigs are next to impossible to move into 10 meters.

I build my own FM discriminator for FM detection, and modulate the VCO
directly for true FM transmit. A model with a noise blanker is a plus.
The TX move requires a couple of the coils in the PA circuit to have a
turn or so removed.

If you drop a SASE to my callbook adress I'll be happy to send you a copy
of the info I have.

73,
Dave Hockaday Wb4iuy
[e-mail]

http://www.webbuild.com/~wb4iuy/
http://www.webbuild.com/~wb4iuy/teara.html
http://www.RTPnet.org/~fcarc/
http://www.RTPnet.org/~rdrc/
http://www.geocities.com/TheTropics/3349/
http://www.geocities.com/TheTropics/3341/
http://www.geocities.com/TheTropics/3489/
http://www.geocities.com/TheTropics/3212/


From [e-mail] Wed Jun 19 21:16:47 1996
From: Samuel Geller <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: H A M F E S T  and Computer Fest
Date: Sat, 15 Jun 1996 08:49:14 -0400
Message-ID: <Pine.SOL.3.93.960615084753.3059C-100000@mail>


     ------------------------------------------------------------------
     |                   The Famous BRATS Maryland                    |
     |                                                                |
     |        H A M F E S T  and  C O M P U T E R   F E S T           |
     |                                                                |
     |                    Sunday July 28, 1996                        |
     |                                                                |
     |       At the Maryland State Fairgrounds, Timonium, MD          |
     |   (On York Road, just North of the Baltimore Beltway (695))    |
     |                                                                |
     |       Air Conditioned Building   LARGE Tailgating Area         |
     |                                                                |
     |                   Plenty of Free Parking                       |
     |                Accessible to the Handicapped                   |
     |   For Information, or table reservations, call [phone]   |
     |  OR [e-mail]  OR our home page: http://smart.net/~brats |
     |                                                                |
     | Talk-in on the BRATS Repeater System 147.030(+) and 224.960(-) |
     ------------------------------------------------------------------
de W3MQF




From [e-mail] Wed Jun 19 21:16:48 1996
From: "Caleb Hess" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Half duplex robot communication
Date: Fri, 14 Jun 1996 13:27:29 -0500 (EST)
Message-ID: <27234@834776854>
References: <[e-mail]>

In article <[e-mail]>,
Bill Standing <[e-mail]> wrote:
>I' looking for a quick and dirty, 6 or 2 meter, half duplex, AM (or FM)
>modem circuit that will support a 50kbaud signal.  The link will be between
>a host computer and a mobile robotic platform no more that 50 feet away.
>
ComRad in Indianapolis sells a cheap (non-S.S.) wireless RS-232 link,
900 MHz, with a range of several 100's of feet.  Let me know if you want
more info; I have the manual and phone # at home.

Caleb Hess                                                      KE9LC


From [e-mail] Wed Jun 19 21:16:49 1996
From: [e-mail] (Dana Myers)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Help me build .001 microhenry strip line inductor
Date: 13 Jun 1996 15:34:46 GMT
Message-ID: <4ppcem$[e-mail]>
References: <[e-mail]>

In article <[e-mail]>,
VE4KLM  <[e-mail]> wrote:
>
>I am building a 6th order butterworth bandpass filter for the 2 meter
>band (hoping to kill the intermod problem at my location), but some
>of the inductors are just too small to wind using conventional air
>coil designs. I have seen the use of strips of metal to do this, but
>I do not know the calculations involved. The ARRL book I have shows
>lots of projects using pieces of wire or strips of metal, but they do
>not tell you how to calculate the inductance.
>
>Can anyone give me dimensions for a .001 microhenry strip, and also maybe
>some strip line formulas, so that I can create my own inductors.

1nH is a very small inductance - the same as about 1mm of component
lead.  You may have trouble realizing this value practically.  I'd
look at re-synthesizing the filter to get more practical values.


Dana
--
 * Dana H. Myers KK6JQ, DoD#: j | Views expressed here are mine and should *
 * [phone]               | not be interpreted or represented as     *
 * [e-mail]      | those of Sun Microsystems, Inc.          *



From [e-mail] Wed Jun 19 21:16:50 1996
From: [e-mail] (Garry Foster)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Help need chip data
Date: Sun, 16 Jun 1996 22:33:58 GMT
Message-ID: <4q25fa$[e-mail]>
References: <4prhso$[e-mail]>
Reply-To: [e-mail]

If you have acess to the net you should start using it to look up your
own requests.

I suggust starting at The Chip Directory
http://www.civil.mtu.edu/chipdir/chipdir.html

or Gray's Page at
http://www.scruznet.com/~gcreager/hello2.htm


                                         Garry Foster WB0NNO



4511, 744511
BCD to 7-segment decoder/common-cathode LED driver.

       +----------+
  A1 |1  ++ 16| VCC
  A2 |2       15| YF
/LT |3       14| YG
/BI |4       13| YA
/LE |5  4511 12| YB
 A3 |6       11| YC
 A0 |7       10| YD
GND |8        9| YE
    +----------+

[This information is part of the GIICM]

[e-mail] (William J. Graham) wrote:


>Subject:  Help need chip data
>help!

>Need someone with an IC data book to tell me if
>the 4511 decoder/latch/display driver chip is for
>common anode or common cathode leds?

>thanks

>Bill
>N5LMX/DA1WG
>[e-mail]
>--
>Never Thirst !
>"My head hurts, my feet stink and I don't love Jesus!"- J. Buffett




From [e-mail] Wed Jun 19 21:16:51 1996
From: [e-mail] (Jim Hammock)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: HF Emergency - An Ex
Date: Tue, 18 Jun 1996 01:17:00 GMT
Message-ID: <[e-mail]>
Distribution: world

Hello Bill,

B ->I think you sent this to the wrong person. I'm glad to get this, though,
   >as I am involved in RACES/ARES and it did explain some things I wasn't
   >aware of. Such as the congestation on the telephone lines being more of
   >a problem than power outage.

    Sorry, don't know how that happened with a reply. I hope it wasn't
private so the intended could read the message. Especially since some
idiot erased it from his hard drive.

B ->My actual reply to the person who posted the stuff you commented about was
   >simply the line below:

B ->"Check out this Spring in Northern Idaho."

B ->Up there they thought they'd be OK, everything was on cellular phones.
   >Guess what? The cell phone transmitters got knocked out when the power
   >went. :-) And most of the phone lines were down as well. So they were
   >glad to have hams. And it did cover an area the size he said he hadn't
   >seen covered.

    In a hurricane or severe windstorm those marvelous lowest bidder
cell towners will come tumbling down too. Try using a 300mW to reach a
cell site 2 miles away on the ground!

B ->I'm deaf, so some areas of knowledge didn't interest me much until recentl
y

   >Now about your specifics, if you don't mind explaining them. I've never
   >had problems calling my mom on Mother's Day. :-)

    How nice not to have to talk to your mother-in-law every year!!!
<Grin> For those of us with that stone around our neck, hours can be
spent trying to get through. Mother's Day is the heaviest service day
the phone companies experience.

B ->Don't the phones need electrical power to work? I know that when power in
   >my house goes out, the phone still works, but not if it works both ways:
   >I know we can call the power company and tell them, but can people also
   >call in to us? I'd assume not, the ringer wouldn't work?

    The phones (except cordless) will still work, the dialing and
ringing power is provided from the plant (central exchange) and they
have backup batteries (truck batteries with a pituitary problem) and
generators to provide power when commercial power fails.

Cont next message
___
* UniQWK #2145* Math problems? Call 1-800-10*(24+13)-(64-16)/2^14E2


From [e-mail] Wed Jun 19 21:16:52 1996
From: [e-mail] (Jim Hammock)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: HF Emergency - An Ex
Date: Tue, 18 Jun 1996 01:17:00 GMT
Message-ID: <[e-mail]>
Distribution: world

B ->Also, if the power is out like it was up there this Spring, won't that als
o
   >shut down the phone central exchange for the town?

    No. The exchange should have adequate batteries for hours of backup,
even if the generators fail.

B ->Assuming it had a generator, wouldn't that still cause problems to
   >phone service, beyond the media and panicked folks trying to check
   >on friends and relatives,

    Not the power outage beyond scared people loading up the system. See
my explaination below.

   >...let alone the politicos using the interruption setup you
   >described (should'veknown the gov't would have something like that
   >in place! ;-) to check on their local fund-raising drive during the
   >emergency ("Did you get them checks cashed? No? Get it done now!")
   >(Yeah, I'm pretty pissed off at my local politicos right now. Sorry.)

    No, that's the problem, the local authorities don't have a priority
or flash overide system. That's why alternate means of communication are
needed. If they could override non-urgent calls in a disater then things
would get done. (Including making a lot of disconnected callers mad.)
Some of the federal (closed) systems and military (closed) systems have
that capability. (By closed I mean not accessable to the public.)

B ->I hope you won't mind answering these as I'm really curious about this gap
   >in my communications knowledge.

    Not at all, just in case the person I was trying to answer didn't
see the last message, I'll be a little redundant. The problem is not
power to the communications systems, it's overload of those systems.
When cable installations are planned the company looks at current and
reasonable projected needs (ie is a mall or office building planned
during the expected life of the cable. The local automated exchanges
(those cute fiberglass telephone company outhouses you see in suburban
and rural areas) are planned on the same basis. In a rural town of 1000
customers, they may project that 2% of the customers would be a normal
top load for people calling in or out of that exchange at the same time.
(I'm sure they use formulas that take into account businesses etc.) That
means there would be a need for 20 lines out of the exchange during an
expected heavy load. They would add a fudge factor for bad lines, etc.
of maybe 10% of that for a total of 22 lines. That works fine on most
days (except Mothers' Day, Christmas, and Easter when those of us who
try to call get a recording saying, "due to a heavy volume of calls your
call did not go through, please try again later." Of course everybody
else tries later too so the problem just gets worse.
    Let a disaster hit, and everyone of those 1000 customers will be
calling out, or have people calling in, all at once. The systme takes
whoever is dialing at the time a line opens up.
    Let's expand that to a city the size of LA. As the total number of
subscribers goes up you can expect the ratio of outside line usage to
decrease. (A larger number of calls will be local though, and that also
overloads the system.) It doesn't take a rocket scientist to figure out
that with a few million trying to call out, and several million trying
to call in that things are going to grind to a halt.
    That's why alternative means of communication are needed.



    Jim KE4EDT/AA


___
* UniQWK #2145* Math problems? Call 1-800-10*(24+13)-(64-16)/2^14E2


From [e-mail] Wed Jun 19 21:16:53 1996
From: Dj Merrill <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Homebrew Pagers?
Date: Tue, 18 Jun 1996 09:22:35 -0400
Message-ID: <[e-mail]>
References: <[e-mail]>
To: Tyler Gunn <[e-mail]>

Tyler Gunn wrote:
>
> Hello everyone, I'm interested in making a homebrew pager that I would
> operate on an amateur band.  I'm wondering if anyone out there has ever
> attempted this?    That or is it possible to modify a standard pager to
> receive it's signal in an amateur band and then to build a transmitter for
> my home?  If anyone has any information, please email me at
> [e-mail]...

        Kantronics is doing something similar.  Their new
firmware for the KPC-9612 tnc supports the paging standard
used by most numerical and text pagers.  They are even selling
pagers that are tuned for ham freqs...
        Check out "http://www.kantronics.com"

-Dj

--
---
Dj Merrill                          Institute for Simulation and
Training / UCF
Associate in Simulation             3280 Progress Drive, Orlando, FL
32826
[e-mail] - N1JOV        [phone] / Fax: [phone]

                       "BSD: The way Unix should be"


From [e-mail] Wed Jun 19 21:16:54 1996
From: cadams5 <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: homebrew tnc
Date: Sun, 16 Jun 1996 19:03:18 -0400
Message-ID: <[e-mail]>

I would like to build a tnc(preferably 9600 baud) or a packet modem,
does anyone know of any plans or kits. Just bored and want something to
do.

                                                KE4YNN
                                                Brian


From [e-mail] Wed Jun 19 21:16:55 1996
From: [e-mail] (Gavin Melville)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: homebrew tnc
Date: Wed, 19 Jun 1996 00:14:03 GMT
Message-ID: <4q7k9b$[e-mail]>
References: <[e-mail]>

cadams5 <[e-mail]> wrote:

>I would like to build a tnc(preferably 9600 baud) or a packet modem,
>does anyone know of any plans or kits. Just bored and want something to
>do.

>                                               KE4YNN
>                                               Brian

Although I am a few weeks shy of being ready to release it I have
designed a low cost 9600 bps TNC and modem -- free to all.   It will
be released as schematics and PCB layouts.   The TNC is Z80 based, and
the modem uses a FX589 from CML.   It is at the working stage, but I
want to run a couple of PCB's to check all the last minute changes.

I have taken a lot of effort to make this "producable" in the ham
environment eg. very few unusual parts, non PTH PCB etc.

I will post where it will be  available  here when it is ready,

Regards,
Gavin Melville, ZL3UGM
[e-mail]





From [e-mail] Wed Jun 19 21:16:56 1996
From: "Bill Sample" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Ic Wanted TC5080
Date: Tue, 18 Jun 1996 18:27:19 +1200
Message-ID: <01bb5cdf.33c791c0$[e-mail]>

Wanted IC type TC5080 or ECG1207 divider chip for IC22s PLL.
Bill Sample ZL1AXZ
[e-mail]



From [e-mail] Wed Jun 19 21:16:57 1996
From: Steve Roberts <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Laser Link Info Wanted
Date: 18 Jun 1996 13:46:07 GMT
Message-ID: <4q6buv$[e-mail]>
References: <4p57ap$[e-mail]> <[e-mail]>

[e-mail] (Gary Coffman) wrote:
>
> In article <4p57ap$[e-mail]> [e-mail] (Tim Taylor) writes:
> >Has anyone tried building a laser link between two repeater sites and
> >what where the results.  We are concidering setting up a link between
> >a 10 meter transmitter and a 10 meter reciever at about 7 miles apart
> >as the crow flies.  The 10 meter reciever will be connected into the
> >local 2 meter repeater and the laser will be used to communicate to
> >the remoter 10 meter transmitter.
>
>
>
> The beast you want is known as a Acousto OPtic Modulator, its a
chunk of quartz with  a piezo transducer bonded to it and driven by a
few watts of RF, it produces a defraction grating in  the crystal and
by setting angle of the laser beam very carefully with respect to the crystal
you can
either AM or ON/OFF modulate the beam of the laser. This is a off the shelf
device and sells for say $200 used and complete with driver module,
I'd go digital using a codec and on/off modulate the beam with the digital cod
e.
LCD shutters are not fast enough for your application as suggested in the prev
ious post.
7 miles is a long way and you will need a columnating telescope to expand the
beam
and reduce its divergence.The book you want to check out is titled Laser Exper
imenters Cookbook,
88 ways to use a laser. You are probably better off with a RF link,
especially if you have a lot of snow or rain. I do laser lightshows and its
hard to get a beam to hit something and stay there at 7 miles as the beam acts
 as
a optical lever.

  Surplus AOMs are available from many laser surplus companies on the net,
good luck.


  Steve N8VKD





From [e-mail] Wed Jun 19 21:16:57 1996
From: JungHo Yu <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: looking for 4 contact plug for FT-50R Mic/Ear Jack
Date: 17 Jun 1996 17:15:08 GMT
Message-ID: <4q43qs$[e-mail]>

hi,
i'm looking for 4 contact plug for FT-50R 'cause i wanna make TNC cable.
if u have this stuff or know where i can find this , pse email me..
73s de Matt

--
[e-mail]
Amateur Radio Callsign KC8DJQ / DS5RTN
OHIO STATE UNIV.




From [e-mail] Wed Jun 19 21:16:58 1996
From: [e-mail] (DH)
Newsgroups: rec.radio.amateur.homebrew
Subject: NEED PLANS FOR A 222MHZ NOTCH FOR A 10M RIG
Date: Sun, 16 Jun 1996 05:06:51 GMT
Message-ID: <4q04sv$[e-mail]>

Hello,
 I am looking for some simple plans to build a 222mhz notch filter to
add to a 10 mtr mobile rig.  Can someone please help with
instructions?  I would like to build it in a small RF tight box and be
able to tie it in line with the coax and antenna.  Please send email

[e-mail]




From [e-mail] Wed Jun 19 21:16:59 1996
From: [e-mail] (DH)
Newsgroups: rec.radio.amateur.homebrew
Subject: NEED PLANS FOR A 430MHZ BIG WHEEL ANTENNA
Date: Fri, 14 Jun 1996 20:50:10 GMT
Message-ID: <4psjdl$[e-mail]>

Hello,
  I am looking for plans to build a 430mhz Big Wheel Antenna.  All
information will be appreciated.


Thanks es 73's
[e-mail]





From [e-mail] Wed Jun 19 21:17:00 1996
From: [e-mail] (Stephen Muther)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Need: Cheap source of SMT Parts
Date: 16 Jun 1996 19:43:50 -0700
Message-ID: <4q2gp6$[e-mail]>
References: <4q1m9q$[e-mail]>

In article <4q1m9q$[e-mail]>, KF8HN <[e-mail]> wrote:
>Does anyone know of a mail-order source of Cheap surface-mount
>components (not the regular $0.30 to $2.00 for a single ceramic
>SMT capacitor parts source)?
>
>Curt Benjamin KF8HN

Surplus stores around here (Silicon Valley) are selling chip resistors
and caps for as cheap as $0.50 for 10.  The price seems to be getting
more reasonable but I guess it has not spread around the country yet.

I think Digi-Key (http://www.digikey.com) sells a range of SMT components
but the best deal seems to be the designer kits of standard values. One
of these is probably worth the investment for the serious home brewer.
After that, you could just buy single value replacements for the kit.

Good Luck

Steve Muther WF6R



From [e-mail] Wed Jun 19 21:17:01 1996
From: Steve Roberts <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Need: Cheap source of SMT Parts
Date: 19 Jun 1996 16:07:40 GMT
Message-ID: <4q98kc$[e-mail]>
References: <4q1m9q$[e-mail]> <4q6d8s$[e-mail]>

Allen Wallace <[e-mail]> wrote:
>
> In article <4q1m9q$[e-mail]> KF8HN, [e-mail]
> writes:
> >Does anyone know of a mail-order source of Cheap surface-mount
> >components (not the regular $0.30 to $2.00 for a single ceramic
> >SMT capacitor parts source)?
>
>
>Old cell phones are usually great for this, but the Electronic GoldMine
at 602 451 7454 in SCottsdale AZ is stocks all sorts in standard values at
a good price,  Also DC Electronics  at 1 800 467 7736 stocks them as well
DC is great for RF parts like freq synthesisers and FM DEmods.




From [e-mail] Wed Jun 19 21:17:02 1996
Newsgroups: rec.radio.amateur.homebrew
From: "Robert W. Lewis" <[e-mail]>
Subject: Re: Novice QRP
Message-ID: <[e-mail]>
Date: Sat, 15 Jun 1996 23:04:49 -0400
References: <4pl8de$[e-mail]>

Dennie Mildfeldt wrote:
>
> I wonder why there is a lack of QRP rigs available for novice freqs.
> All homebrew/kit qrp rigs are set up with crystals in the general
> class freqs.
> Wouldn't it make sense to offer then on 10M or in the novice portion
> of 40M to get new hams to learn code? or am I just wishing.
> I am a technician class ham with my 5wpm code endorcement, and am
> tired of all the stuff on 2M, of packet, of SSB, of all the other
> "hot" stuff.  Sold all my HF gear...sold all my packet gear....sold
> all my 2M gear...and bought me a qrp rig with novice crystal in it for
> 40M.  Gonna start at the bottom...learn my code like I should have
> years ago...and enjoy pounding brass for a change.
> Seems like the faster we run....the quicker we get back to where we
> were.  Go figure.
> Let me know what you think.
> 73....de Dennie (KC4QNW)
> Aho Mitakuye Oyasin (All My Relations)

The S&S Engineering synthesized QRP rigs cover the novice freqs.  Most
of the VFO type QRP kits around can be set up to cover the novice freqs.



From [e-mail] Wed Jun 19 21:17:03 1996
From: [e-mail] (William R. Discipio Jr)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Novice QRP
Date: 18 Jun 1996 14:07:03 -0700
Message-ID: <4q75pn$[e-mail]>
References: <4pl8de$[e-mail]>

As best as I can tell, many of the QRP kits *will* allow you to run
on novice segments.  I just built an Explorer II from Oak Hills Research
and it could be made to tune any 70 kHz segment within the 40m CW band.
It just depends where you center the VFO.

Check out the June issue of QST.  They review 5 QRP kits.  It's a great
article!  I just saw some of the kits sold by Wilderness Radio (415)
494-3806 such as the Sierra QRP and the NorCal 40A and was quite
impressed.  These are really sharp looking radios.  The boards are works
of art.  They'll do the novice segments too!


Regards,

Bill Di Scipio

Dennie Mildfeldt ([e-mail]) wrote:
: I wonder why there is a lack of QRP rigs available for novice freqs.
: All homebrew/kit qrp rigs are set up with crystals in the general
: class freqs.
: Wouldn't it make sense to offer then on 10M or in the novice portion
: of 40M to get new hams to learn code? or am I just wishing.
: I am a technician class ham with my 5wpm code endorcement, and am
: tired of all the stuff on 2M, of packet, of SSB, of all the other
: "hot" stuff.  Sold all my HF gear...sold all my packet gear....sold
: all my 2M gear...and bought me a qrp rig with novice crystal in it for
: 40M.  Gonna start at the bottom...learn my code like I should have
: years ago...and enjoy pounding brass for a change.
: Seems like the faster we run....the quicker we get back to where we
: were.  Go figure.
: Let me know what you think.
: 73....de Dennie (KC4QNW)
: Aho Mitakuye Oyasin (All My Relations)

--
----------------------------------------------------------------------
"Plus Jim [Kennemur] does not call all blacks he disagrees with house
niggers Jim [Kennemur] calls house niggers that he disagrees with house
niggers.  Big difference Dippy."  -- Shawn Smith <[e-mail]>


From [e-mail] Wed Jun 19 21:17:04 1996
From: [e-mail] (Emarit Ranu)
Newsgroups: rec.radio.amateur.homebrew
Subject: Simple VLF radio?
Date: 16 Jun 1996 16:30:46 GMT
Message-ID: <4q1crm$[e-mail]>


        I am interested in listening to the natural EM noise in the VLF
        spectrum (2-11kHz).  I have been unable to find a schematic or
        other source from which to build a VLF receiver.  Does anyone
        know where I would find this?

        Thanks.

--
        -Emarit Ranu, KG0CQ 73's  [e-mail]
        Electrical Engineering     Colorado State University
        All generalizations are bad.     Censorship:  ######
        _._  __.  _____  _._.  __._


From [e-mail] Wed Jun 19 21:17:05 1996
From: [e-mail] (Stephen R Holmes)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Simple VLF radio?
Date: Mon, 17 Jun 1996 11:39:58 -0700
Message-ID: <sholmes-1706961139590001@192.0.2.1>
References: <4q1crm$[e-mail]> <4q1lp5$[e-mail]>

In article <4q1lp5$[e-mail]>, [e-mail] (Stephen
Muther) wrote:

> In article <4q1crm$[e-mail]>,
> Emarit Ranu <[e-mail]> wrote:
> >
> >       I am interested in listening to the natural EM noise in the VLF
> >       spectrum (2-11kHz).  I have been unable to find a schematic or
> >       other source from which to build a VLF receiver.  Does anyone
> >       know where I would find this?
[...]
> I recently took an interest in this myself.  You should check out the
> Longwave Home Page:  http://users.aol.com/lwcanews/lwcanews.html
> The section "File Library" includes a link "Natural Radio Files"
> Which points to a couple of different designs.  The page has all
> kinds of other useful info on VLF.

You might also want to check out <http://www-pw.physics.uiowa.edu/mcgreevy/>
Mr. McGreevy has plans and kits available for a VLF/ELF receiver, and
has (in the past) posted ASCII-art schematics to rec.radio.shortwave
(which, now that I think about it, is a completely "inappropriate"
group, given the wavelengths involved ;-)

/s.holmes

--
Stephen R. Holmes   | [e-mail]    | the usual disclaimers
TNS, Inc.           | Add yourself to the | .....
Reston, VA  USA     |  411 white pages!   | witty saying TBD


From [e-mail] Wed Jun 19 21:17:06 1996
From: [e-mail] (Stephen Muther)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Simple VLF radio?
Date: 16 Jun 1996 12:03:01 -0700
Message-ID: <4q1lp5$[e-mail]>
References: <4q1crm$[e-mail]>

In article <4q1crm$[e-mail]>,
Emarit Ranu <[e-mail]> wrote:
>
>       I am interested in listening to the natural EM noise in the VLF
>       spectrum (2-11kHz).  I have been unable to find a schematic or
>       other source from which to build a VLF receiver.  Does anyone
>       know where I would find this?
>
>       Thanks.
>
>--
>       -Emarit Ranu, KG0CQ 73's  [e-mail]
>       Electrical Engineering     Colorado State University
>       All generalizations are bad.     Censorship:  ######
>       _._  __.  _____  _._.  __._

I recently took an interest in this myself.  You should check out the
Longwave Home Page:  http://users.aol.com/lwcanews/lwcanews.html
The section "File Library" includes a link "Natural Radio Files"
Which points to a couple of different designs.  The page has all
kinds of other useful info on VLF.

Steve Muther WF6R




From [e-mail] Wed Jun 19 21:17:07 1996
From: Cecil Moore <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.antenna
Subject: Re: Variable-length ladderline tuner: implementation issues
Date: 17 Jun 1996 09:49:01 -0700
Message-ID: <4q429t$[e-mail]>
References: <[e-mail]> <[e-mail]>

Pete Soper <[e-mail]> wrote:
: I got no responses to my recent posting about how to design the
: R/C circuit for damping relay coils as they are de-energized.

Hi Pete, I didn't see your posting. What was the subject? Are you
sure it got posted? What I have done is drive the relay with
double the rated voltage with a resistor in series equal to the
coil resistance and a 0.1 pf cap across the coil.

: My concern is that each time I flip off a relay as I switch the
: tuner a noise spike will be induced into the nearby ladder line,

I wouldn't recommend switching the relays with RF on them. What I
do is switch the relays without RF on them, then apply RF and write
down the results. From then on, simply consult the chart and preset
the relay position depending on frequency.

: Again, I'll initially simply hook the tuner up and see if I have
: RF in the shack, but I'm trying to anticipate how to handle this
: if it is an issue.

I try not to anticipate problems but solve them as they arrise.
Quite often an anticipated problem never occurs.

: Oh, another devilish detail came when I tried to connect the ladder
: line to the relay wiper contacts. I removed the internal wires
: connecting the wipers to the connector pins on the other end of
: the relay, figuring this would be hopeless from a balance point of
: view. So now the ladder line loops comes in the end of the relay,
: in line quite nicely with the two pairs of wiper arms. I cut slots in
: the plastic relay covers to allow the ladder line in while expecting
: to be able to seal the slot with coax-seal after everthing was
: sorted out. But it turned out there still wasn't clearance for
: the ladder line to pass through, so I had to abandon the plastic
: covers.

I kept the covers, brought the common wires out holes in the covers
and fastened them to the ladder-line outside the relay cover. I found
that trying to solder the ladder-line to the common moving arms
caused the relay electro-mechanical sensitivity to change for the worse.
I used a glue gun to seal the holes.

73, Cecil, KG7BK (W6RCA soon), OOTC



From [e-mail] Wed Jun 19 21:17:09 1996
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.antenna
From: [e-mail] (Pete Soper)
Subject: Variable-length ladderline tuner: implementation issues
Date: Mon, 17 Jun 1996 15:17:34 GMT
Message-ID: <[e-mail]>
References: <[e-mail]>

I got no responses to my recent posting about how to design the
R/C circuit for damping relay coils as they are de-energized.
The Sams' Radio Engineering book rates a series resistor/capacitor
circuit as third in effectiveness after a single diode or back to
back diode pair for controlling high voltage as the relay coil field
collapses. I'm concerned that the diode route might get me into
trouble with nearby RF fields (i.e. as a nonlinear element and
thus potential RFI source), but 'm not savvy enough to chose the R/C
values for my relays (12 volt, 400 ohm coils), thus the posting.

My concern is that each time I flip off a relay as I switch the
tuner a noise spike will be induced into the nearby ladder line,
attempting to break my eardrums. Perhaps this is a non-issue?
Anyway, I'll go the empirical route and test for receiver "pops"
after wiring up the first relay.

This device I'm building is an array of seven relays spaced three inches
apart on a strip of lucite. Loops of 300 ohm ladder line of larger
and larger dimensions are switched in or out of the transmission
line connection between an antenna and the transceiver (via a 4:1 balun
and variable capacitor). The initial loops will run out from the
end of their relays and be held apart with more bits of lucite or PVC
while the longer loops will go up and around the back side of the
shack, held in place with insulated standoffs.

The goal is to arrange a 200 ohm resistive load at the balun to get an
effective match with low losses. This project is my best guess about
how to implement the tuner that Cecil Moore dreamed up and has alluded
to in frequent postings to the antenna group.

But the devil is in the details, and I'm now quite concerned that
my chances of maintaining balance with all the interconnects among
the relays will be poor. I'm wondering if (assuming imbalance),
I might tweak the length of one side of one piece of ladder line
to regain proper phase relationships? Would a dual trace scope
connected to each side of the line show me lack of balance and
allow this adjustment, preventing radiation from the ladder line run
from the tuner to the balun (i.e. at the operating postition)?
Again, I'll initially simply hook the tuner up and see if I have
RF in the shack, but I'm trying to anticipate how to handle this
if it is an issue.

Oh, another devilish detail came when I tried to connect the ladder
line to the relay wiper contacts. I removed the internal wires
connecting the wipers to the connector pins on the other end of
the relay, figuring this would be hopeless from a balance point of
view. So now the ladder line loops comes in the end of the relay,
in line quite nicely with the two pairs of wiper arms. I cut slots in
the plastic relay covers to allow the ladder line in while expecting
to be able to seal the slot with coax-seal after everthing was
sorted out. But it turned out there still wasn't clearance for
the ladder line to pass through, so I had to abandon the plastic
covers. So now I have seven "open frame" relays that are going to
be sitting under the floor of the end of my shack, effectively
outdoors. I'm now scheming some way to keep dust and insects out of
the contacts! A bit of Saran Wrap (cling film) is the only idea I
have so far.

Pardon me if this sounds idiotic (or IS idiotic!). I knew nothing
about RF just a few months back and am learning as quickly as I can.

Regards,
Pete
KS4XG


From [e-mail] Wed Jun 19 21:17:10 1996
From: Jay123a <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.antenna
To: [e-mail]
Subject: Re: Variable-length ladderline tuner: implementation issues
References: <[e-mail]> <[e-mail]>
Message-ID: <31c6c09e.0@205.230.56.7>
Date: 18 Jun 96 14:43:42 GMT

[e-mail] (Pete Soper) wrote:
>I got no responses to my recent posting about how to design the
>R/C circuit for damping relay coils as they are de-energized.
>The Sams' Radio Engineering book rates a series resistor/capacitor
>circuit as third in effectiveness after a single diode or back to
>back diode pair for controlling high voltage as the relay coil field
>collapses. I'm concerned that the diode route might get me into
>trouble with nearby RF fields (i.e. as a nonlinear element and
>thus potential RFI source), but 'm not savvy enough to chose the R/C
>values for my relays (12 volt, 400 ohm coils), thus the posting.
>
>My concern is that each time I flip off a relay as I switch the
>tuner a noise spike will be induced into the nearby ladder line,
>attempting to break my eardrums. Perhaps this is a non-issue?
>Anyway, I'll go the empirical route and test for receiver "pops"
>after wiring up the first relay.
>

>Pete
>KS4XG


Hello Pete:

Just use a diode across the relay coils to attenuate the relays
de-energized reverse voltage pulse, and if you think that local RF will
effect the relays just add a 1000 pf disc capacitor across the doide, it
really shouldn't be bothered by local RF energy if you have a reasonable
SWR.

Jay



From [e-mail] Wed Jun 19 21:17:10 1996
From: [e-mail] (HH357)
Newsgroups: rec.radio.amateur.homebrew
Subject: Wanted : SCA decoder kit
Date: 18 Jun 1996 08:34:31 -0400
Message-ID: <4q67on$[e-mail]>
Reply-To: [e-mail] (HH357)

Can anyone here direct me to a good SCA decoder kit or board?


From [e-mail] Wed Jun 19 21:17:12 1996
From: Madjid <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Where to buy NE602?
Date: Mon, 17 Jun 1996 10:32:30 -0700
Message-ID: <[e-mail]>
References: <4prv15$[e-mail]>

[e-mail] wrote:
>
> I'm trying to locate a source for several NE602 local oscillator/mixer chips
.
> All my normal suppliers (Digi-Key, Mouser, etc) seem not to carry it.
>
> R.G.

They are 2.49$ a piece at:

        OCEAN STATE ELECTRONICS
        PoBox 1458
        6 Industrial Drive
        Westerly, RI, 02891
        Tel: [phone]
             1 800 866 6626 (Orders)
             1 401 596 3590 (FAX)


-----------------------------------------------------------
Madjid BOUKRI, VE2GMI      Internet: [e-mail]
Antenna simulation program NEC4WIN found at:
http://www.coast.net/SimTel/SimTel/win3/hamradio/nec4w15.zip


From [e-mail] Wed Jun 19 21:17:13 1996
From: [e-mail] (KF8HN)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Would a MMIC make a good osc. @ VHF/UHF frequencies?
Date: 16 Jun 1996 19:05:03 GMT
Message-ID: <4q1lsv$[e-mail]>
References: <4pvbmp$[e-mail]>

In article <4pvbmp$[e-mail]>, [e-mail](Thomas
R Mahanna) says:
>
>
>What do you think? I've got a few of them to try. MAR-6's. I guess I
>could use an MPF102, but I was just wondering. Anyone?
>
>-Tom
>
Tom, the UHF/microwave equipment that I repair on the job uses MMIC's
in the receiver oscillators and they work very well. This is top-end
commercial equipment.

Curt Benjamin, KF8HN


From [e-mail] Wed Jun 19 21:17:14 1996
From: [e-mail](Thomas R Mahanna)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Would a MMIC make a good osc. @ VHF/UHF frequencies?
Date: 18 Jun 1996 15:24:10 GMT
Message-ID: <4q6hmq$[e-mail]>
References: <4pvbmp$[e-mail]> <4q6b70$[e-mail]>

In <4q6b70$[e-mail]> [e-mail] (W8JI  Tom)
writes:

>MMIC's have a low input and output impedance, complicating the
external
>circuit. They load the external circuit heavily.
>
>MMIC's require external current limiting, and that aggravates
temperature
>related drift. You just can't feed them from a voltage regulated
supply,
>there has to be current limiting after the voltage regulator. When
MMIC
>temperature changes, the thing drifts.
>
>MMIC's have a lot of internal negative feedback, and don't saturate or
AGC
>well. That makes a MMIC oscillator a bit fussy about feedback level,
and
>prone to parasitics and a bit dirty. The way around that is to add an
>external limiter or AGC in the feedback loop.

That's a lot to consider. Better bet to stick with the FETs. I was
hoping to use them as power oscillators for a 100mW QRP project. Do you
think that they would be superior in this particular application?

-Tom




From [e-mail] Wed Jun 19 21:17:15 1996
From: [e-mail] (DH)
Newsgroups: rec.radio.amateur.homebrew
Subject: WTB: 10 MTR MOBILE W/ FM
Date: Fri, 14 Jun 1996 20:51:22 GMT
Message-ID: <4psjfs$[e-mail]>

Hello,
  I am looking for a 10 Meter Mobile Rig that has FM.  Something like
the Uniden HR-2600 or the Uniden 2510 or Rnager 2950.

Please send email

[e-mail]





From [e-mail] Tue Jun 25 20:32:48 1996
From: [e-mail] (Ian Clark)
Newsgroups: rec.radio.amateur.homebrew
Subject: 10Kb/s data links using cellular chips?
Date: 20 Jun 1996 10:23:58 GMT
Message-ID: <4qb8ru$[e-mail]>



The specs for Analog celluar phones indicate they use a 10Kb/second
Manchester coded data channel.
Has anyone used the same type of coding (all on one chip perhaps ?)
successfully on 2m or 70cm. I assume that they would be keeping banwidth
down to fit in the same bandwidth as a 'normal' celluar voice channel.

--
Ian Clark VK3KRI        [e-mail]      http://www.deakin.edu.au/~ic/



From [e-mail] Tue Jun 25 20:32:49 1996
From: Timothy Ressel,Non,HP,Unkn <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: 10khz to 100khz broadband quadrature generator?
Date: 25 Jun 1996 21:01:04 GMT
Message-ID: <4qpk2g$[e-mail]>
References: <4qn4m1$[e-mail]>

Kent Farnsworth writes:

> Is there a good low frequency (10 to 100khz) broadband quadrature
> generator? I need to accurately shift a variable frequency by 90
> degrees.
>
> Thank you.
> Kent
>
>
For <=100KHz, you can use walking-ring counters as sine wave generators, and
drive them with flip flops which are clocking on opposite edges of a master
clock. Check out Don Lancaster's CMOS COOKBOOK for ideas.

--Timster


From [e-mail] Tue Jun 25 20:32:51 1996
Newsgroups: rec.radio.amateur.homebrew
From: Bob Lewis <[e-mail]>
Subject: Re: 6 METER AM / questions
Message-ID: <[e-mail]>
Date: Tue, 18 Jun 1996 08:22:03 -0400
References: <[e-mail]> <4q2m9c$[e-mail]>

Chris Boone wrote:
>
> [e-mail] (Joel Govostes) wrote:
> >Where is 6m am activity usually found?  50.2?  Calling freq.?
> >How about 2m am, if it's ever used anymore?  What freq.'s?
> >
> >Regarding antennas, would a ground plane or horizontally polarized antenna
> >be best for 6m band openings when using this mode?  From what I
> >understand, antennas for weak-signal ssb/CW are horizontally polarized;
> >not sure what would be appropriate for am/dx.  Thank you, 73
> >(pse reply to [e-mail])               N1AEP
>
> 50.4 is the AM calling/working freq on 6mtrs....still some activity
> there
> when the band is open....
>
> Not sure about 2mtrs...havent heard of any 2mtr AM in years...
>
> As for antennas, horizontal is used on AM style modes (AM/SSB, etc)
> while
> FM uses vertical...thats is mostly true on all bands from 10mtrs
> and
> up...but if the band is open, a vettical on 6AM will work just
> fine...
> If you want to use a horiz antenna, a squalo (square halo) or
> turnstile
> or similar would be best (omni directional)...
>
> 73
> Chris
> WB5ITT

I have not been happy with a vertical on 6 Meter SSB, even during band
openings.  Sometimes it makes no difference but often I can receive
better with a 40 meter dipole at 30 feet than the ringo ranger at 55
feet.  Go for the squalo or a small beam.



From [e-mail] Tue Jun 25 20:32:53 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: 6M/2M dual band antenna
Date: 24 Jun 96 14:53:17 GMT
Message-ID: <[e-mail]>

Earl Needham in Clovis, NM asked about a combo 6M/2M mobile antenna.

Earl:
        There is a commercially available dual band antenna from
Hustler.  They just don't know they have a dual band antenna!!!
Buy a regular Hustler SF-2 2M 5/8 antenna.  This antenna is
electrically 3/4 wavelength when you add in the loading coil at the
bottom.  If you divide 150 MHz (close enough!) by 3 you get 50MHz.
Another way of saying that electrically this antenna is 1/4 at 6M and
3/4 at 2M.  It is a little short on 6, but it *DOES* work.  The only
down side is that it is vertically polarized.  It *does* cost you a
little on 6M SSB but a halo is a lot more trouble and probably not
much better.  No problem for 6M FM though.

All you need is a regular 3/8-24 threaded mount for a mount.  *Any* CB
3/8-24 mount (or amateur mount) will work.  The diplexor is just a
matter of designing a combo low pass/high pass filter and putting it
into a box.  Due to the closeness of the bands, it may be a little
tricky to get working, but not terribly difficult.  There was an
article in one of the Ham magazines in the past 3-4 years and I can't
remember which one that gave a diplexor schematic and construction for
a 146/432 diplexor.  It would give you an idea of how to do one for
6M/2M.  Hopefully, someone on the list has a better memory than me.  I
think it was either 73 magazine or CQ.

Ray Mack
WD5IFS
[e-mail]
Friendswood (Houston), TX



From [e-mail] Tue Jun 25 20:32:54 1996
From: Chris Boone <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: 6M/2M dual band antenna
Date: Tue, 25 Jun 1996 10:56:54 -0700
Message-ID: <[e-mail]>
References: <[e-mail]>

[e-mail] wrote:
>
> Earl Needham in Clovis, NM asked about a combo 6M/2M mobile antenna.
>
> Earl:
>         There is a commercially available dual band antenna from
> Hustler.  They just don't know they have a dual band antenna!!!
> Buy a regular Hustler SF-2 2M 5/8 antenna.  This antenna is
> electrically 3/4 wavelength when you add in the loading coil at the
> bottom.  If you divide 150 MHz (close enough!) by 3 you get 50MHz.
> Another way of saying that electrically this antenna is 1/4 at 6M and
> 3/4 at 2M.  It is a little short on 6, but it *DOES* work.  The only
> down side is that it is vertically polarized.  It *does* cost you a
> little on 6M SSB but a halo is a lot more trouble and probably not
> much better.  No problem for 6M FM though.
>
> Ray Mack
> WD5IFS
> [e-mail]
> Friendswood (Houston), TXActually ANY 2mtr 5/8wave antenna will load as a 1/
4wave on 6..I find the
Signals NMO 150 antenna and the Larsen NMO on 2mtrs both work quite well
on 6 mtrs...

And if the band is open, a mobile on vertical doesnt have any
problems...locally it can hurt though....

73
Chris
WB5ITT


From [e-mail] Tue Jun 25 20:32:55 1996
From: Charles Wenzel <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: 7 Pin Miniature Tube socket- matching plugDoes any one know of a
Date: Tue, 18 Jun 1996 21:48:19 -0700
Message-ID: <[e-mail]>
References: <4pv478$[e-mail]>

I think we use those on some of our oscillators! I know I have 9-pin
types and I feel fairly sure about 7-pins. We get them from Electrical
Industries. If you only need a couple let me know!

Charles


From [e-mail] Tue Jun 25 20:32:57 1996
From: "Paul Giusti (VK3FPG)" <[e-mail]>
Newsgroups: rec.radio.amateur.digital.misc,rec.radio.amateur.equipment,rec.radio.amateur.homebrew,rec.radio.scanner,rec.radio.shortwave
Subject: acars shareware wanted
Date: Thu, 20 Jun 1996 02:44:18 +1100
Message-ID: <[e-mail]>
Reply-To: [e-mail]

i am wondering if any one out there can point me in the direction
to some acars decoding software and only the software as the hardware
side of things i have under control (hamcomm type similar to lowes)

  any help in getting some software will be VERY appreciated and
recipricated in kind.

  thanks in advance :-)

    paul



From [e-mail] Tue Jun 25 20:32:58 1996
From: Bob Recny <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: AM Radio Chip (LM1863)
Date: Wed, 19 Jun 1996 08:17:49 -0400
Message-ID: <[e-mail]>
References: <4q6bql$[e-mail]>

Robert A. Lanier wrote:
>
> I am trying to find a source for the National Semiconductor LM1863 AM
> (Radio System for Electronically Tuned Radios). I would like to use
> this part for a current project, but I cannot find one. The part is on
> lifetime but, which means the part will be obsolete soon. National
> does not have any in stock and nither do the major distributors
> (Hamilton-Hallmark, Future, Zeus). Can anyone recommend another
> possible source or do you have a few extra parts you want to sell?
>
> Any help would be much appreciated.
>
> Tony,  KE4ATO

Tony,

Try Rochester Electronics.  They specialize in old and obsolete parts.
As a matter of fact, their "tagline" is "manufacture and distribution of
trailing edge semiconductors."

Their number is 508-462-9332 (508-462-9512 fax).  This was taken from a
'94 - '95 catalog.

Good luck.
73 de Bob, N8SQT


From [e-mail] Tue Jun 25 20:32:58 1996
From: William W Janssen <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew,rec.radio.swap
Subject: Re: amplifier, microwave
Date: 23 Jun 1996 15:05:13 GMT
Message-ID: <4qjmf9$[e-mail]>
References: <4qj2km$lhh$[e-mail]>
To: [e-mail]

Better tell us how much power you need from the amplifier.
I have a little two watt unit but I suspect you want more.

Bill K7NOM



From [e-mail] Tue Jun 25 20:33:00 1996
From: Timothy Ressel,Non,HP,Unkn <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: DDS devices for ham use
Date: 19 Jun 1996 23:41:47 GMT
Message-ID: <4qa37r$[e-mail]>

There is growing interest in using Direct Digital Synthesis (DDS) for various
ham applications, mostly VFO generation.  Recent articles, including the one i
n
QEX, expound on the virtues of DDS to the point of mild hyperbole. Well, I hat
e
to rain on anyone's parade, but you hams may be thinking 'no free lunch' when
reading about DDS, and you'd be correct.

First, DDS is a QUANTIZED synthesis, which means samples are spitting out of a
DAC at some rate. In the case of the Analog Devices AD7008, samples come out a
t
a 50MHz rate. This means a strong (-10 dBc) 50MHZ component at the output. The
n
there is the mirroring problem, which means for an output of n MHz, you also
get an output at 50-n MHz. So a 24.5MHZ signal will have a signal at 25.5MHz.
It gets worse. Because DDSs use a phase accumulator method, the number of
discreet steps in the sine wave varies with frequency, but the sample rate
(50 MHZ) does not. These to sample rates interact to create spurs. Lots of
spurs. The amplitude of these spurs increase with the frequency of the DDS
output. At 1MHz the spurs are -60dBc to -80dBc, while above 10MHz the spurs ar
e
-30dBc.

So this is clearly not paradise. However, if you stay below about 5MHZ and use
a VCO in a phase-locked-loop arrangement, you can get a clean output at a
higher frequency. My HF rig uses Mini-Circuits VCOs ($16.00!) to get a 45-75MH
z
1st LO output for high-side injection to get a 45MHz IF.

--Timster

[e-mail]



From [e-mail] Tue Jun 25 20:33:01 1996
From: Mike Moran <[e-mail]>
Newsgroups: sci.electronics.repair,sci.electronics.design,rec.radio.amateur.homebrew
Subject: Re: Desoldering Guide
Date: Sun, 23 Jun 1996 20:10:33 -0600
Message-ID: <[e-mail]>
References: <4q2mie$[e-mail]> <4qjj1r$[e-mail]>
To: Nigel Cook <[e-mail]>

NIGEL:

   I've been using the Denon SC-7000 for about a year and I'm very, very
happy with it.  Having continuous vacuum in a self-contained handheld
tool is a true sanity-saver for field service and it saves room on the
bench.  IMHO, continuous vacuum is more than worth the price.

MIKE


From [e-mail] Tue Jun 25 20:33:02 1996
From: Nigel Cook <[e-mail]>
Newsgroups: sci.electronics.repair,sci.electronics.design,rec.radio.amateur.homebrew
Subject: Re: Desoldering Guide
Date: 25 Jun 1996 06:55:39 GMT
Message-ID: <4qo2hb$[e-mail]>
References: <4q2mie$[e-mail]> <4qjj1r$[e-mail]> <[e-mail]>


>
>    I've been using the Denon SC-7000 for about a year and I'm very, very
> happy with it.  Having continuous vacuum in a self-contained handheld
> tool is a true sanity-saver for field service and it saves room on the
> bench.  IMHO, continuous vacuum is more than worth the price.
>
>sorry to all for previous  posting.
Man and machine not working as one.
here is the text that should have transferred.
Although i own an OK vacuum assist desolder
station i prefer to use a hot-air paint stripper for
speed and effeciency.
I've been using this technique for five years
To speed the process i made an IC puller from
a large pair of circlip pliers with the tips forged/
joggled to give good purchase under the ends
of the IC.
Practising on an old TTL board should give
an extraction rate of about 1 every 2 seconds
For further info on this and adaptation to deal
with surface mount chippery please check
Hints and tips on my home page
http/:www.tcp.co.uk/~diverse/


>



From [e-mail] Tue Jun 25 20:33:03 1996
From: nq9250700-Schuman <ixstar![e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: do not read test
Date: 19 Jun 1996 16:45:27 GMT
Message-ID: <4q9ar7$[e-mail]>

dddd



From [e-mail] Tue Jun 25 20:33:04 1996
From: [e-mail] (Chip Owens)
Newsgroups: rec.radio.amateur.homebrew
Subject: Electronic Workbench
Date: 20 Jun 1996 14:33:32 GMT
Distribution: usa
Message-ID: <4qbnfs$[e-mail]>

One of the recent ham magazines had an article about building up
a homebrew 30M transceiver. The author made extensive use of a
software package call "Electronic Workbench". Has anyone else used
this package that would care to comment on their experience with it?

Is there a source in the US to buy this software and how much is it?

Thanks!
Chip Owens, NW0O

--
Chip Owens NW0O,  ([e-mail])


From [e-mail] Tue Jun 25 20:33:05 1996
From: Steve C <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: External audio filters any good ?
Date: Wed, 19 Jun 1996 20:32:02 +0100
Distribution: world
Message-ID: <bBWIaDAyWFyxEw$[e-mail]>

Hi Peeps,

I'm wondering if I need one of these external type audio filter gizmos I
see advertised...

I only use VHF SSB for "real" contacts (On packet rest of time) and
wonder if these boxes will make life easier.

What actually can you get one do do ?

Can you filter out the hash, so you can have the vol up for those pesky
weak signals without doing the few brain cells left in with all that
noise ???

Can they even select one weak signal's voice from a pile of others ??

And can I make on myself not too expensively ???

Your comments/experiences gratefully received.

73 de Steve G1YBB.

--
Steve C


From [e-mail] Tue Jun 25 20:33:06 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Good CB to Convert to 10m FM?
Date: Sun, 23 Jun 1996 10:07:44 -0700
Message-ID: <[e-mail]>
References: <4pmmpt$[e-mail]>
To: Mark Schoonover - KA6WKE <[e-mail]>

Mark Schoonover - KA6WKE wrote:

> I'm looking for a CB that would be relatively easy to convert to
> 10m FM. I have the usual equipment, etc. This would be my first
> attempt and I don't know much about the different CB gear available.

I have used all three on 10 FM, converted CB's convert commercial rigs, and ra
dios
designed for 10FM.  Converted CB's are the worse & a waste of a good radio.

Go get a old Mortac or Mastr Pro & use that.  CB's have poor IF sections & low

power.  Leave the CB on it's intended freqs where it canbe of good use.


From [e-mail] Tue Jun 25 20:33:07 1996
From: [e-mail] (Kent Farnsworth)
Newsgroups: rec.radio.amateur.homebrew
Subject: Good quadrature oscillator design?
Date: Mon, 24 Jun 1996 21:15:55 GMT
Message-ID: <4qn4f7$[e-mail]>

I am looking for an accurate quadrature oscillator design. Anyone know
of one that will give an accurate (<1%) and stable sin/cos phase at
<100mhz frequencies?

Thanks
Kent




From [e-mail] Tue Jun 25 20:33:08 1996
From: [e-mail] (Lu Hui-Hua)
Newsgroups: rec.radio.amateur.homebrew
Subject: help
Date: 24 Jun 96 15:42:07 GMT
Message-ID: <[e-mail]>
Reply-To: [e-mail]

hi de bd7ix(name Lu Hui-Hua) from P.R.CHINA, i want to made a
baycom modem use tcm3105 chip, but i can not find it in my country,
who can help me? thanks .
     73!
          bd7ix: Lu Hui-Hua


From [e-mail] Tue Jun 25 20:33:09 1996
From: William W Janssen <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: HF Emergency - An Ex
Date: 19 Jun 1996 22:45:58 GMT
Message-ID: <4q9vv6$[e-mail]>
References: <[e-mail]>

[e-mail] (Jim Hammock) wrote:
>B ->snip etc
>
>    Not the power outage beyond scared people loading up the system. See
>my explaination below.
>
>   >...snip snip etc
>
>    No, that's the problem, the local authorities don't have a priority
>or flash overide system. That's why alternate means of communication are
>needed. If they could override non-urgent calls in a disater then things
>would get done. (Including making a lot of disconnected callers mad.)
>Some of the federal (closed) systems and military (closed) systems have
>that capability. (By closed I mean not accessable to the public.)
>
snip snip etc
>
>    Jim KE4EDT/AA
>
>



Interesting. I haven't been involved with this in a few years but
the telcos DID have a different class of service for fire, police etc.



They didn't bump existing calls but did get preference when making
a call as I remember. Pending calls were put in a queue and there were
different queues for different classes of service.( I Think).
I had no reason to get into the details of how it was done.



Bill K7NOM



From [e-mail] Tue Jun 25 20:33:10 1996
From: [e-mail] (Mark Boyer)
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.equipment
Subject: Hold function for RS freq counter
Date: 20 Jun 1996 12:16:36 GMT
Message-ID: <4qbff4$[e-mail]>
Reply-To: [e-mail] (Mark Boyer)



Could someone please repost the mod.  I thought I had my screen capture
enabled and when I went back to re-read the file I could no longer find
the article in the newsgroup.

thanks much.

--
Mark Boyer VE3MJB   [e-mail]
                    [e-mail]

If diamonds are a girls best friend, then gravity must be her worst enemy!


From [e-mail] Tue Jun 25 20:33:11 1996
From: Ken Keslar <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Home brew
Date: 22 Jun 1996 00:39:31 GMT
Message-ID: <4qffc3$[e-mail]>

Hi all.

i was wondering if anyone had plans for a 2 meter FM rig and/or a 70cm
rig and/or a 6 meter rig.

if you do could you please e-mail them to me at
[e-mail]
thanks in advance.

73,

DE KB2WKW
Kenny



From [e-mail] Tue Jun 25 20:33:12 1996
From: [e-mail] ()
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.misc
Subject: Re: Homebrew Microwave Equipment
Date: 22 Jun 1996 11:49:38 GMT
Message-ID: <4qgmki$[e-mail]>
References: <[e-mail]>

In article <[e-mail]>,
Nathan Odle  <[e-mail]> wrote:
>I'd like to start out with a simple wideband voice
>link using a horn and dish, and progress to maybe a 10GHz data link.

As a matter of curiosity, Is there a hope to find a QSO-partner
on 10GHz WBFM? When I finished my WBFM TRX 10 years
ago, it turned out that everyone else here had moved to SSB.

73, Moritz DL5UH



From [e-mail] Tue Jun 25 20:33:13 1996
From: Steve Roberts <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.misc
Subject: Re: Homebrew Microwave Equipment
Date: 22 Jun 1996 21:31:07 GMT
Message-ID: <4qhomr$[e-mail]>
References: <[e-mail]>

Nathan Odle <[e-mail]> wrote:
>
> Does anyone know of any kits/plans/directions for the construction of
> microwave gear?  I'd like to start out with a simple wideband voice
> link using a horn and dish, and progress to maybe a 10GHz data link.  I
> have seen the project in the 1994 ARRL Handbook, and think it might be a
> little too complicated to start with.  Any help along these lines will
> be GREATLY appreciated.


  Try the RSGB (radio society of Great Brittain)  UHF/VHF handbooks,
usually available from ARRL or in a really good university library,
also check out back issues of 73 magazines micro column by CL Houghton
as he likes to work on a budget as well.
hope this helps.


From [e-mail] Tue Jun 25 20:33:14 1996
From: William W Janssen <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.equipment,rec.radio.amateur.misc
Subject: Re: Homebrew Microwave Equipment
Date: 22 Jun 1996 17:12:29 GMT
Message-ID: <4qh9ht$[e-mail]>
References: <[e-mail]> <[e-mail]>

To measure the 10 GHz frequency, Set up the Gunnplexer to transmit
and measure the receive diode current. Put a sheet metal reflector
in front and move it towards and away from the Gunnplexer. You
should see the diode current go through minimum and maximum values.
The distance between minimum's is a half wave. If you move
the plate through many halfwaves you can average the measurements
and easily get into the 10GHz band.

I hope that description is clear.

Bill K7NOM



From [e-mail] Tue Jun 25 20:33:15 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Homebrew Microwave Equipment
Date: 24 Jun 96 18:26:19 GMT
Message-ID: <[e-mail]>

Jim Odle wrote:

> Gary Coffman wrote:
>> The "standard" way to start out on 10 GHz has been with a pair of
>> Gunnplexers. The cheap motion detector types (about $20) will
>> work, though the Microwave Associates units are better...

> (snip snip snip...)

> Yes, this is almost exactly what I have in mind. However, I don't
> have any experience putting something like this together. I
> understand the theory in practice here, I just don't think I can get
> from there to a finished design. Does anybody have a pair of these
> already set up that I could buy and take a look at for ideas, or a
> more detailed set of plans? Thanks in advance for any help.

I picked up a couple of X band motion detector Gunns at a swapmeet in
the spring and had no difficulty retuning them to our band. If you
have nothing else available, you can use the old technique of
measuring the wavelength by reflecting RF back into the feedhorn and
observing mixer diode current. There is a good writeup in the RSGB
book _Practical Transmitters for Novices_ that discusses this - and
lots more, like how to build a simple modulator around a 7805. I'm
using FM radios for IF rigs, tacked together an IF preamp and am
dangerously close to being on 10 GHz WBFM. My budget for two stations
(you have to build two to have somebody to talk to) was $CDN100. I'm
coming in well under that.

Try the RSGB Microwave Handbook (volume 3). There is also a brief
writeup on the subject in the ARRL UHF/Microwave Projects book.

Just in case anybody asks - the IF preamp uses a MAR6 and a MAR3 in a
50 ohm microstripline circuit, laid out with a felt pen, scotch tape,
and guesswork. The coupling capacitors are 1 nF chip capacitors, and a
78M08 handles the power. In lieu of rivets or plated-through holes I
drilled lots of holes in the board and soldered wires through to the
ground plane. Most of the decoupling capacitors are 1 nF and .1 uF
chip capacitors (use lots!); I salvaged some tantalum electrolytics
from a junk cellphone to babysit the voltage regulator.

Don't let people try to tell you that WBFM is completely passe. After
you play with voice, why not try ATV? Or data? These things are really
really really simple to use. Don't be afraid!

Laura Halliday VE7LDH         "C'est une femme mutine, assez
[e-mail]           elegante, grave et legere, ayant le
[e-mail]               sens du confort et du plaisir
Locator: CN89mg                en tout." - C. Deneuve



From [e-mail] Tue Jun 25 20:33:16 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Homebrew Pagers?
Date: Sun, 23 Jun 1996 10:13:46 -0700
Message-ID: <[e-mail]>
References: <[e-mail]>

Tyler Gunn wrote:
>
> Hello everyone, I'm interested in making a homebrew pager that I would
> operate on an amateur band.  I'm wondering if anyone out there has ever
> attempted this?    That or is it possible to modify a standard pager to
> receive it's signal in an amateur band and then to build a transmitter

People take commercial pagers & convert them too amateur freqs all
the time.  If you need a paging encoder for the transmitter then
talk to Kantronics for Digital format & Communications Specialists for
analog.


From [e-mail] Tue Jun 25 20:33:17 1996
From: [e-mail](Thomas R Mahanna)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Homebrew Pagers?
Date: 23 Jun 1996 22:32:28 GMT
Message-ID: <4qkgls$[e-mail]>
References: <[e-mail]> <[e-mail]>

In <[e-mail]> [e-mail] writes:
>
>Tyler Gunn wrote:
>>
>> Hello everyone, I'm interested in making a homebrew pager that I
would
>> operate on an amateur band.  I'm wondering if anyone out there has
ever
>> attempted this?    That or is it possible to modify a standard pager
to
>> receive it's signal in an amateur band and then to build a
transmitter
>
>People take commercial pagers & convert them too amateur freqs all
>the time.  If you need a paging encoder for the transmitter then
>talk to Kantronics for Digital format & Communications Specialists for

>analog.


Where could we all get some info on this? Good question!

-Tom



From [e-mail] Tue Jun 25 20:33:18 1996
From: <[e-mail]>
Date: Fri, 21 Jun 96 07:48:58 -0500
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: homebrew tnc
Message-ID: <[e-mail]>
References: <4q7k9b$[e-mail]>

>
> Although I am a few weeks shy of being ready to release it I have
> designed a low cost 9600 bps TNC and modem -- free to all.   It will
> be released as schematics and PCB layouts.   The TNC is Z80 based, and
> the modem uses a FX589 from CML.   It is at the working stage, but I
> want to run a couple of PCB's to check all the last minute changes.
>
> I have taken a lot of effort to make this "producable" in the ham
> environment eg. very few unusual parts, non PTH PCB etc.
>
> I will post where it will be  available  here when it is ready,
>
> Regards,
> Gavin Melville, ZL3UGM
> [e-mail]
>

Will pc vorad be available ? If so, any idea on cost ?

Hugh Duff  VA3TO  Toronto




---
 ■ NFX v1.3 [000]



From [e-mail] Tue Jun 25 20:33:19 1996
From: "Earl Needham" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Homebuilt mobile 6 meter / 2 meter antenna?
Date: Fri, 21 Jun 1996 17:57:50 -0600
Message-ID: <01bb5fcd.7433b220$[e-mail]>


        I'm interested in a combination 6 meter and 2 meter mobile antenna.
However, at the price for commercially available gear, I'd end up spending
about $80 US for the antenna, $70 US for the mount, and probably $80 US
for the duplexer.

        Has anyone ever homebuilt an antenna for these two bands, perhaps using a
trap?  If so, would you mind giving me some pointers / ideas for doing so?
 Thanks!

--
Earl Needham, KD5XB, in Clovis, NM
Phi Mu Alpha Sinfonia, Pi Chi '76
Have you really jumped ROUND PARACHUTES? (Overheard at the Clovis
Parachute Center)




From [e-mail] Tue Jun 25 20:33:20 1996
From: [e-mail] (W8JI  Tom)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: How do I determine the permeabilty of an unknow ferrite core?
Date: 25 Jun 1996 08:19:25 -0400
Message-ID: <4qolgd$[e-mail]>
References: <[e-mail]>

In article <[e-mail]>, [e-mail] (Jim
Potter) writes:

>Also, note that this is a small signal measurement. The actual
>effective mu is a function of the signal level and dc bias.
>
>73 de K9GXC, Jim
>
>
>

And frequency. Effective permeability also varies with frequency.

And be careful the test equipment doesn't load the circuit with uwanted
strays. Scopes are bad at this, RF voltmeter probes are much better.

73 Tom


From [e-mail] Tue Jun 25 20:33:20 1996
From: [e-mail] (Nick J Chiarchiaro, AET / N2QXF)
Newsgroups: rec.radio.amateur.homebrew
Subject: Mic Radio Matching Query
Date: Fri, 21 Jun 1996 02:29:52 GMT
Message-ID: <4qd1cv$[e-mail]>

Hi name her is Nick and I hope you can help.

If you have a radio, any radio, that has a 600ohm mic input and you
want to feed it with a mic element that is of a different resistance.
How would you suggest going abt it?

The reason I ask is I have a Shure hand mic that the element seems to
be around 15k ohm.  I want to match it to a radio here that requires
abt 600ohms.  I can't seem to locate a matching transformer for
15k-600.

Is there any other way to do this?

Any help would be appreciated.

Tnx and 73
Nick
N2QXF



From [e-mail] Tue Jun 25 20:33:21 1996
From: [e-mail] (Jim)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Mic Radio Matching Query
Date: Sat, 22 Jun 1996 20:59:32 GMT
Message-ID: <4qi11c$[e-mail]>
References: <4qd1cv$[e-mail]>

[e-mail] (Nick J Chiarchiaro, AET / N2QXF) wrote:

>Hi name her is Nick and I hope you can help.

>If you have a radio, any radio, that has a 600ohm mic input and you
>want to feed it with a mic element that is of a different resistance.
>How would you suggest going abt it?

>The reason I ask is I have a Shure hand mic that the element seems to
>be around 15k ohm.  I want to match it to a radio here that requires
>abt 600ohms.  I can't seem to locate a matching transformer for
>15k-600.

>Is there any other way to do this?

>Any help would be appreciated.

>Tnx and 73
>Nick
>N2QXF

You could use a transistor emitter follower or FET source follower to
match high Z to low Z....
--
Jim   E-Mail: [e-mail]



From [e-mail] Tue Jun 25 20:33:22 1996
From: [e-mail] (John Bayne)
Newsgroups: rec.radio.amateur.homebrew
Subject: Need 8874's
Date: Fri, 21 Jun 1996 04:16:44 GMT
Message-ID: <4qd7nd$[e-mail]>

Can anyone give me advise on the best place (most reasonalbe price) to
buy 8874 ceramic tubes?  My Alpha 78 lost one, and I need to replace
it.

Thanks,

John N4EEB



From [e-mail] Tue Jun 25 20:33:23 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: pll0305a
Date: Tue, 25 Jun 1996 09:56:04 GMT
Message-ID: <4qogit$[e-mail]>

I  need info a the pll0305a chip as used in the htx-100 radio- can
onyone hepl?

[e-mail]



From [e-mail] Tue Jun 25 20:33:24 1996
From: [e-mail] (BadB)
Newsgroups: rec.radio.amateur.homebrew
Subject: R-C to kick a relay...
Date: Wed, 19 Jun 96 11:07:23 GMT
Message-ID: <4q8n1b$[e-mail]>



Hi...

I just want to say thanks for all the help everyone has given me here in the
past....

I have been looking around for a handbook on some items but have not found any

that have what I need.... anyways thanks again ...

Here is the new question of the day..

Does any one have a simple r-c design that will click on a relay ...heres the
thought ...comming off the 120 line .. about a 10-15 second delay, and the
relay is to a 120 3a or so jobbie.. any easy suggestions??? I have to pick up
the parts new from mouser..

thanks,.,...

z


From [e-mail] Tue Jun 25 20:33:24 1996
From: Nathan Odle <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Simple VLF radio?
Date: Fri, 21 Jun 1996 16:20:48 -0600
Message-ID: <[e-mail]>
References: <4q1crm$[e-mail]>
To: Emarit Ranu <[e-mail]>

Last month's (or was it 2 months ago?  Check your library) Scientific
American had instructions on winding a large loopstick-type of antenna
for VLF work, and I think it included schems for a reciever.  Check it
out...I'm considering building one of these with a friend who's an
amateur meteorologist for lightning detection.

-Nathan
 [e-mail]
 http://www.missouri.edu/~c670064


From [e-mail] Tue Jun 25 20:33:25 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Tnx, CATV xfmr help
Date: 21 Jun 1996 09:51:08 -0700
Message-ID: <4qejts$[e-mail]>


  My thanks to the many responses concerning 1/4 wave catv xfmrs. I hope
others found much of the info of value, as I did.

                              Pete/wa4hei


From [e-mail] Tue Jun 25 20:33:26 1996
From: [e-mail] (Mike Davis)
Newsgroups: rec.radio.amateur.homebrew
Subject: Toroid WBT
Date: Wed, 19 Jun 1996 08:47:52 -0700
Message-ID: <[e-mail]>

Hi,

Just wondering if anyone has a canned wide band toroidal transformer
recipe for around 30 MHz.  I have been reading past posts on the search
engines and based on those it looks like a 61 material at around an inch
or a 67 material at around 2 inch diameter and turns of around 12 and 20
respectively should do the trick.  Ratio is 9:1.  I have played with the
multiturn type windings and think I have that down.

Thanks for any help or pointers,

Mike

--
Articles: Melatonin, Folate, DHEA, etc.; Discount Sources Listing,
Herpes Alternatives Page, The Buffalo SpringBoard (retro)
         http://www.quake.net/~xdcrlab/hp.html
ULTRANET: Ultrasound Technology Graphic Hot Links
                  http://www.quake.net/~xdcrlab/Ultrasound.html
Save the BW, I report unsolicited commercial email -> Blacklist of Internet Ad
vertisers:   http://www.cco.caltech.edu/~cbrown/BL/


From [e-mail] Tue Jun 25 20:33:28 1996
From: "Charles H. Reichert" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: toroids
Date: Thu, 20 Jun 1996 12:39:27 -0500
Message-ID: <[e-mail]>
References: <4q8mt4$[e-mail]>
To: [e-mail]

Guido de Melo wrote:
>
> Hello there!
>
> I'm developing a transceiver and - since I will have to implement
> filters - I need information on toroids. Somehow I can't find anything
>
> on the Web on toroids. I'm interrested in Amidon and Neosid products.
> Please let me know the relevant netsites/addresses.
> Thanks,
> Guido DL5MGU
>
> [e-mail]


Amidon will (did) supply in-depth design liteature which I've used
succesfully in the past. If not let me know.


--
                         \|/
                         ^ ^
                       ( O O )
====================.ooO==U==Ooo.====================
|          KD9JQ               847-358-3827 Home    |
|    Charles H. Reichert       847-632-6669 Work    |
|      955 Concord Ln.                              |
|  Hoffman Ests., IL. 60195   [e-mail]  |
=====================================================


From [e-mail] Tue Jun 25 20:33:28 1996
From: [e-mail] (Ben E. Cline)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: toroids
Date: 21 Jun 1996 15:35:37 GMT
Message-ID: <4qefg9$[e-mail]>
References: <4q8mt4$[e-mail]>

In article <4q8mt4$[e-mail]>,
        [e-mail] (Guido de Melo) writes:
>Hello there!
>
>I'm developing a transceiver and - since I will have to implement
>filters - I need information on toroids. Somehow I can't find anything
>
>on the Web on toroids. I'm interrested in Amidon and Neosid products.
>Please let me know the relevant netsites/addresses.
>Thanks,
>Guido DL5MGU
>
>[e-mail]
>

See http://zeus.cedcc.psu.edu/ind/toroid.html.

73, Benjy
--
Benjy Cline, AC4XO, Ph.D.
Virginia Tech Computing Center
[e-mail]
http://benjy.cc.vt.edu:1951/~benjy/



From [e-mail] Tue Jun 25 20:33:29 1996
From: [e-mail] (Woody White)
Newsgroups: sci.electronics.components,rec.radio.amateur.homebrew
Subject: Re: Toshiba 2SC3810
Date: Mon, 24 Jun 1996 02:59:25 GMT
Message-ID: <4qkik3$[e-mail]>
References: <4qc82k$[e-mail]>

[e-mail] (Guido Sansoni) wrote:

>Hallo,
>there is someone who can tell me an equivalent of 2SC3810 NPN
>transistor made by Toshiba?
>It is a final of three mounted on a power supply 13,8 volts 30 A
>(Daiwa model PS30Xm II)
>Many tanks

I can not find this in my cross-reference material.  You might
be able to use a 2N5302.  This is an NPN, 100wt., 30A., transistor
in a TO-3 (metal, diamond shape) package.
Gud luk!


de  Woody (WB4QXE) -  [e-mail]

Electron Microscopist/Microanalysist,
Ham radio "homebrewer", shade tree mechanic,
'90 Nissan 240SX, wish still had my Mcycle too!



From [e-mail] Tue Jun 25 20:33:31 1996
From: [e-mail] (Bob Duckworth)
Newsgroups: rec.radio.amateur.homebrew,rec.radio.amateur.antenna
Subject: Re: Variable-length ladderline tuner: implementation issues
Date: 20 Jun 1996 08:42:32 -0400
Message-ID: <4qbgvo$[e-mail]>
References: <[e-mail]> <[e-mail]> <31c6c09e.0@205.230.56.7>

Has anyone considered using stepping relays for switching the line segments?
4 x SPNT (N=# of segments + 1 for indexing)
A microcontroller could step until the index is found and then step to the
appropriate segment based on your lookup table.
Heck, you could generate a signal to crank the
RF down while stepping.

If anyone knows of some suitable relays.....

-bob


--
Bob Duckworth Consulting, 960 Ralph McGill Blvd. Atlanta GA 30306-4447
bobs' address is [e-mail]    404-888-0389(V) 892-2301(FAX)
Buy Sell Trade Surplus Computer Electronics Datacom Telecom since 1981.
Fax or email your list for a fast cash offer. Watch for listserv catalog.


From [e-mail] Tue Jun 25 20:33:31 1996
From: Steve Roberts <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Varian Tube JBXT 6975 From B52 Tailgun Radar
Date: 20 Jun 1996 21:13:58 GMT
Message-ID: <4qceum$[e-mail]>



 Hello to all,

   I have a tube that was a local oscillator in a B52 tail gun radar
assembly which my former employer bought as scrap. It is made by Varian,
has a waveguide flange on the side with a matching assebly, leads for the cath
ode
a top terminal with a HV lead, and a terminal on the side of the metal tube li
ke
a ground lug. The tube is all metal construction and about three inchs long an
d maybe
9/16s at its widest, not counting the flange assembly. Has a bright red paint
job and is in mint condition

numbers on side of tube,  JBXT 6975 (part number)
                          6426   67  (date code ?)
                          72H4



 Two questions, what band is it, and how do I bias it for operation?
my guess is its a very tiny klystron or some form of exotic microwave oscillat
or,
any help would really be appreciated!! Please reply by email as well as
post as this newsgroup is rather hard to get from time to time.

73's  Steve N8VKD,  [e-mail]





From [e-mail] Tue Jun 25 20:33:33 1996
From: Michael J Wooding <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: VHF Communications Magazine
Date: Sun, 23 Jun 1996 17:21:26 +0100
Distribution: world
Message-ID: <[e-mail]>

Hi All,

For those of you who already subscribe to VHF Communications and to
anyone who may be interested, issue 2/1996 of the magazine will be
shipped Monday June 24th,

For information on the contents of this issue or for any other info
regarding the magazine please take a look at our WWW sites.

UK:  http://www.eolas.co.uk/ag/vhfcomm.htm
USA: http://www.clearlight.com/~vhfcomm

Regards ... Mike

--
Michael J Wooding G6IQM     email: [e-mail]
http://www.eolas.co.uk/ag/vhfcomm.htm & http://www.clearlight.co./~vhfcomm
KM Publications, 5 Ware Orchard, Barby, Nr.Rugby, CV23 8UF, UK
Tel: [phone]     Fax: [phone]
VHF Communications Magazine - Especially covering VHF, UHF and Microwaves


From [e-mail] Tue Jun 25 20:33:33 1996
From: <[e-mail]>
Date: Wed, 19 Jun 96 20:22:08 -0500
Newsgroups: rec.radio.amateur.homebrew
Subject: Want HC705 develop. brd.
Message-ID: <[e-mail]>


Looking for a Motorola 68HC705K developers package.
Mot. had a special on them a few years ago...wondering if anyone
who may of picked one up and is not using it might be willing to
sell it !?

Thanks...

Hugh Duff  VA3TO  Toronto



---
 ■ NFX v1.3 [000]



From [e-mail] Tue Jun 25 20:33:35 1996
From: [e-mail] (Richard Karlquist)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Would a MMIC make a good osc. @ VHF/UHF frequencies?
Date: 18 Jun 1996 17:53:16 GMT
Message-ID: <4q6qec$[e-mail]>
References: <4pvbmp$[e-mail]> <4q6b70$[e-mail]> <4q6hmq$[e-mail]>

In article <4q6hmq$[e-mail]>,
Thomas R Mahanna <[e-mail]> wrote:
>In <4q6b70$[e-mail]> [e-mail] (W8JI  Tom)
>writes:
>
>>MMIC's have a low input and output impedance, complicating the
>external
>>circuit. They load the external circuit heavily.

They load the external circuit with ~50 ohms.  You design
the external circuit matching to be compatible with this.

>>
>>MMIC's require external current limiting, and that aggravates
>temperature
>>related drift. You just can't feed them from a voltage regulated
>supply,
>>there has to be current limiting after the voltage regulator. When
>MMIC
>>temperature changes, the thing drifts.

In my experience, MMIC's have less change in the phase of S21 than
transistors.  This results in less temperature drift.

>>
>>MMIC's have a lot of internal negative feedback, and don't saturate or
>AGC
>>well. That makes a MMIC oscillator a bit fussy about feedback level,
>and
>>prone to parasitics and a bit dirty. The way around that is to add an
>>external limiter or AGC in the feedback loop.
>
Right.

>That's a lot to consider. Better bet to stick with the FETs. I was
>hoping to use them as power oscillators for a 100mW QRP project. Do you
>think that they would be superior in this particular application?
>
>-Tom

FET's make sense in certain oscillator configurations, but the best
bipolar transistor and MMIC oscillators have lower phase noise and
higher temperature stability than the best FET oscillators.  It is
interesting to note that one almost never sees papers at the Frequency
Control Symposium about FET oscillators.  Of course, we could all
be wrong.

Rick Karlquist N6RK
[e-mail]



From [e-mail] Tue Jun 25 20:33:56 1996
From: [e-mail]
Newsgroups: rec.radio.info,rec.radio.amateur.space
Subject: ARLS007 STS-78 update
Date: 18 Jun 1996 16:44:11 -0400
Message-ID: <$[e-mail]>


SB SPACE @ ARL $ARLS007
ARLS007 STS-78 update

ZCZC AS15
QST de W1AW
Space Bulletin 007  ARLS007
From ARRL Headquarters
Newington, CT  June 18, 1996
To all radio amateurs

SB SPACE ARL ARLS007
ARLS007 STS-78 update

The countdown continues for the Thursday, June 20, launch of space
shuttle Columbia.  Shuttle mission STS-78 will carry the SAREX
payload.  Three amateurs will be among the crew of seven--two
Americans and one Canadian: Susan T. Helms, KC7NHZ, will serve as
the payload commander.  She was a crew member aboard the shuttle
Endeavour during STS-54 in January 1993 and operated SAREX from
aboard Discovery during STS-64 in September 1994, Charles E. Brady
Jr, N4BQW, is a mission specialist on his first shuttle flight.
Canadian Robert Brent Thirsk, VA3CSA, will serve as a payload
specialist.  He's also on his first shuttle flight.

Remaining crew members include Commander Terence T. Henricks, Pilot
Kevin R. Kregel, Mission Specialist Richard M. Linnehan, and Payload
Specialist Jean-Jacques Favier.  During the mission, the shuttle
will carry the Life and Microgravity Spacelab to conduct experiments
in the weightless environment.

SAREX--the Shuttle Amateur Radio EXperiment--is sponsored by ARRL,
AMSAT and NASA and is supported by the FCC.  Amateur Radio has been
flying aboard the shuttles since 1983.

Launch time for STS-78 is 10:49 AM (Eastern) from the Kennedy Space
Center, Cape Canaveral, Florida.  The launch will place the shuttle
into Earth orbit at an altitude of 173 statute miles.  The mission
is planned to run for 16 days and ends July 7.

The SAREX Working Group has chosen 11 schools from around the world
to make scheduled contacts with the shuttle during this SAREX
mission, so students can ask questions of the astronauts during the
contact.  The schools selected for a scheduled radio contact during
this mission are:

Bethlehem Central Senior High School, Delmar, New York

Eisenhower Middle School, San Antonio, Texas

Heritage Middle School, Colleyville, Texas

Anacortes Middle School, Anacortes, Washington

Valley Heights Junior-Senior High School, Blue Rapids, Kansas

Monroe Elementary School, Santa Barbara, California

Maple Grove Education Centre, Nova Scotia, Canada

Saskatoon Public AreospaCe Education (SPACE), Saskatoon,
Saskatchewan, Canada

Toowoomba State High School, Queensland, Australia

Catholic Ladies College, Victoria, Australia

CENG--Nuclear Center of Grenoble, Grenoble, France

During most SAREX missions, crew members also make random contacts
with earthbound hams.  Over the past several years, ham astronauts
have contacted thousands of amateurs around the world and, on many
missions, they have even carried 2-meter packet.  They make these
contacts during their breaks, before and after mealtime, and during
their pre-sleep time.  Innovative computer software allows the crew
to operate the packet gear in an unattended mode, allowing amateurs
to make contacts with the robot station when the astronauts are
working or sleeping.  The call signs to look for on FM voice are
KC7NHZ, N4BQW and VA3CSA.  The FM packet call sign is W5RRR-1.

The crew uses separate receive and transmit frequencies.  Please do
not transmit on the shuttle's downlink frequency.  The downlink is
your receiving frequency.  The uplink is your transmitting
frequency.  The crew will not favor any of the uplink frequencies,
so your ability to communicate with SAREX will be the luck of the
draw.  Transmit only when the shuttle is within range of your
station and when the shuttle's station is on the air.   Here are the
SAREX frequencies:

Worldwide FM Voice Downlink: 145.55 MHz

FM Voice Uplink: 144.91, 144.93, 144.95, 144.97, and 144.99 MHz

Europe-only FM Voice Uplink: 144.70, 144.75, and 144.80 MHz

FM Packet Downlink: 145.55 MHz

FM Packet Uplink: 144.49 MHz

Some SAREX activities will take place on shuttle mission STS-78
during this year's ARRL Field Day, June 22-23.  KC7NHZ, N4BQW and
VA3CSA hope to find enough free time to hand out points from the
shuttle to Field Day ops.

Send reports and QSLs to ARRL EAD, STS-78 QSL, 225 Main St,
Newington, CT 06111-1494, USA.  Include the following information in
your QSL or report: STS-78, date and time in UTC, frequency and
mode.  If you wish to receive a card, include an SASE using a large,
business-sized envelope.  ''The Net'' in Anacortes, Washington, has
generously volunteered to manage the cards for this mission.

Members of the Goddard Amateur Radio Club in Greenbelt, Maryland,
retransmit live shuttle air-to-ground audio over the amateur
frequencies from club station WA3NAN.  To listen in, tune to 3.86,
7.185, 14.295, 21.395, and 28.65 MHz and in the Maryland/DC area on
VHF at 147.45 MHz.

Listen to W1AW for SAREX information and Keplerian element updates
as they become available.  For more information, check the ARRL
SAREX Web Page, http://www.arrl.org/sarex or call the ARRL
Educational Activities Department, 860-594-0301.
NNNN
/EX


From [e-mail] Tue Jun 25 20:34:02 1996
From: [e-mail] (TS Kelso)
Newsgroups: rec.radio.amateur.space
Subject: NORAD Two-Line Orbital Element Sets (TLE826)
Date: 18 Jun 1996 22:49:57 GMT
Message-ID: <4q7bql$[e-mail]>
Keywords: Satellite, Orbital Elements, Keplerian, NORAD

The most current orbital elements from the NORAD two-line element sets are
carried on the *NEW* Celestial WWW,

                    http://www.grove.net/~tkelso/

and are updated daily (when possible). Documentation and tracking software are
also available on this system.

Element sets (also updated daily) and some documentation and software are
available via anonymous ftp from archive.afit.af.mil (129.92.1.66) in the
directory pub/space.

As a service to the satellite user community, the most current of these
elements are uploaded weekly to sci.space.news and rec.radio.amateur.space.
This week's elements are provided below.

******************************************************************************
*

- Current Two-Line Element Sets #826 -
Alouette 1
1 00424U 62049A   96167.02785025  .00000117  00000-0  12740-3 0  2066
2 00424  80.4569 285.8687 0025435  35.9526 324.3333 13.67870388682049
ATS 1
1 02608U 66110A   96164.88620970 -.00000350  00000-0  10000-3 0  9708
2 02608  14.6190 352.8750 0009241  81.9555 278.1241  1.00338050 24829
ATS 3
1 03029U 67111A   96169.18581740 -.00000121  00000-0  10000-3 0  5057
2 03029  14.9144 359.8059 0010091 278.1114 309.3341  1.00273250104764
Starlette
1 07646U 75010A   96168.89778353 -.00000120  00000-0  16553-4 0  9770
2 07646  49.8246 149.8524 0205944 229.5280 128.7499 13.82191227 78925
LAGEOS
1 08820U 76039A   96169.54373306  .00000015  00000-0  10000-3 0  2011
2 08820 109.8549  26.1389 0043692 129.9811 230.4852  6.38664447213851
ETS-2
1 09852U 77014A   96144.29788450  .00000122  00000-0  10000-3 0   710
2 09852  13.2121  33.2352 0001161 167.8158 192.2040  1.00002229 17393
GOES 2
1 10061U 77048A   96167.55760218  .00000051  00000-0  10000-3 0  6837
2 10061  12.3630  37.1159 0010596 123.7954 129.4310  1.00261245 14425
IUE
1 10637U 78012A   96168.49745209 -.00000284  00000-0  10000-3 0  2582
2 10637  35.7447  83.1505 1366793  56.7909 263.5492  1.00239446 19923
GPS BI-01
1 10684U 78020A   96167.78054079 -.00000051  00000-0  10000-3 0  4553
2 10684  64.9855  23.9297 0059384 162.5647 197.6903  1.98069449119387
GPS BI-02
1 10893U 78047A   96168.31186277 -.00000013  00000-0  10000-3 0  2501
2 10893  63.1713 261.0267 0231709  15.2178 345.5229  2.01627236132795
GOES 3
1 10953U 78062A   96167.27005502 -.00000143  00000-0  10000-3 0  6698
2 10953  11.3533  39.9836 0005343 332.0926 248.0177  1.00272749 19038
SeaSat 1
1 10967U 78064A   96170.19854388 -.00000002  00000-0  43669-4 0  4942
2 10967 107.9930 176.8428 0001398 286.5629  73.5358 14.38109417941596
GPS BI-03
1 11054U 78093A   96167.42389787 -.00000019  00000-0  10000-3 0  4119
2 11054  62.8504 260.1863 0046690 179.8076 180.2427  1.93505215128621
Nimbus 7
1 11080U 78098A   96168.69971080 -.00000102  00000-0 -54193-4 0  5944
2 11080  98.9429  30.9676 0009096 333.6363  26.4328 13.83692550891101
GPS BI-04
1 11141U 78112A   96161.55628798 -.00000071  00000-0  10000-3 0   477
2 11141  64.9885  26.5354 0050382  28.4185 331.9028  1.92894619 17734
GPS BI-05
1 11690U 80011A   96162.86642355 -.00000062  00000-0  10000-3 0   321
2 11690  65.3145  25.5414 0144600 189.7207 170.0614  2.00572703134073
GPS BI-06
1 11783U 80032A   96167.38612699 -.00000006  00000-0  10000-3 0  1506
2 11783  62.3087 253.7168 0227143  29.4777 331.8302  2.03456979118796
GOES 5
1 12472U 81049A   96164.76723027  .00000030  00000-0  10000-3 0  9355
2 12472   8.1700  50.2336 0006333  40.6120 319.3048  1.00218814 13053
Cosmos 1383
1 13301U 82066A   96168.96030040  .00000005  00000-0 -10972-4 0  5021
2 13301  82.9318 133.9660 0025694 238.7223 121.1412 13.68074892697341
LandSat 4
1 13367U 82072A   96170.19641422  .00000006  00000-0  11216-4 0  9385
2 13367  98.0734 221.0841 0007355 129.8057 230.3786 14.57179307740681
DMSP B5D2-1
1 13736U 82118A   96170.13863997  .00000033  00000-0  32021-4 0   303
2 13736  98.6247 358.5091 0009799  28.4586 331.7126 14.25789509701209
IRAS
1 13777U 83004A   96170.07605006 -.00000084  00000-0 -28055-4 0  3483
2 13777  98.9654 355.5540 0013720  96.2863 263.9867 13.99246099353499
Cosmos 1447
1 13916U 83021A   96166.16155510  .00000109  00000-0  98405-4 0  5970
2 13916  82.9455 193.2748 0037727 158.0129 202.2653 13.74341936663322
TDRS 1
1 13969U 83026B   96168.68223973 -.00000301  00000-0  10000-3 0  5992
2 13969   8.9642  43.7036 0002652 338.5196  79.5286  1.00256691 21383
GOES 6
1 14050U 83041A   96169.40426355 -.00000255  00000-0  10000-3 0  5191
2 14050   7.0118  53.6014 0005386  11.5675 269.2274  1.00252233106192
OSCAR 10
1 14129U 83058B   96163.12722915  .00000003  00000-0  10000-3 0  4302
2 14129  26.1723 205.2357 6007420  22.7978 355.4952  2.05880692 69747
LandSat 5
1 14780U 84021A   96170.18146299  .00000067  00000-0  25139-4 0  4800
2 14780  98.3283 227.9939 0001683 304.3453  55.7574 14.57055309654070
UoSat 2
1 14781U 84021B   96168.52003118  .00000013  00000-0  99306-5 0  8913
2 14781  97.7992 159.2709 0012770  92.0771 268.1897 14.69458795657559
GPS BI-09
1 15039U 84059A   96166.65273129 -.00000053  00000-0  10000-3 0  4175
2 15039  64.6458  20.7104 0083150  19.1416 341.2439  1.92302199 87384
Cosmos 1574
1 15055U 84062A   96168.23215013  .00000068  00000-0  57062-4 0  7988
2 15055  82.9552 246.6360 0028014 347.8497  12.1978 13.73635870600853
GPS BI-10
1 15271U 84097A   96168.45528970 -.00000002  00000-0  10000-3 0  1690
2 15271  62.0106 254.2769 0153789 358.2442   1.8077  2.00613544 85257
Cosmos 1602
1 15331U 84105A   96167.23184984  .00000136  00000-0  13140-4 0  4818
2 15331  82.5333 114.8665 0019247 319.3253  40.6527 14.84758178632681
NOAA 9
1 15427U 84123A   96169.63347211  .00000044  00000-0  47005-4 0  7373
2 15427  98.9461 234.5579 0014529 316.5233  43.4789 14.13786647593691
GPS BI-11
1 16129U 85093A   96169.82124139 -.00000055  00000-0  10000-3 0  7280
2 16129  65.3229  24.3099 0157487  84.3663 277.4867  1.89367842 21931
Mir
1 16609U 86017A   96169.91641208  .00002262  00000-0  35947-4 0  5536
2 16609  51.6477 120.1223 0005334  83.8270 276.3331 15.58209264590111
SPOT 1
1 16613U 86019A   96168.23074175  .00000089  00000-0  62356-4 0  9487
2 16613  98.7285 236.5124 0001889 349.5746  10.5391 14.20020523220175
Cosmos 1766
1 16881U 86055A   96168.51638587  .00000202  00000-0  21476-4 0  3960
2 16881  82.5190 171.3787 0019410 345.3021  14.7634 14.83739132533746
EGP
1 16908U 86061A   96166.28143182 -.00000083  00000-0  10000-3 0   933
2 16908  50.0110   5.9370 0011455   5.5389 354.5570 12.44414408116046
NOAA 10
1 16969U 86073A   96169.76180238  .00000031  00000-0  31590-4 0  6635
2 16969  98.5229 166.8121 0013852 357.7418   2.3693 14.24988602506689
MOS-1
1 17527U 87018A   96168.22638288 -.00000043  00000-0  00000+0 0  4245
2 17527  98.9366 230.2497 0020104 331.3590  28.6466 14.00395381474857
GOES 7
1 17561U 87022A   96157.45277443 -.00000180  00000-0  10000-3 0  9278
2 17561   3.0382  69.5670 0005652   4.5241 248.2095  1.00356380 17188
Kvant-1
1 17845U 87030A   96170.10877825 -.00020905  00000-0 -26567-3 0  6594
2 17845  51.6497 119.1617 0005210  84.3857 275.5574 15.58180682524266
DMSP B5D2-3
1 18123U 87053A   96169.44807452 -.00000010  00000-0  17440-4 0  4798
2 18123  98.7699 359.7437 0013273 255.2719 104.6988 14.15444513464530
RS-10/11
1 18129U 87054A   96169.92561567  .00000042  00000-0  29675-4 0  2304
2 18129  82.9253 147.9929 0011873 145.0158 215.1774 13.72366777450271
Meteor 2-16
1 18312U 87068A   96167.07932234  .00000035  00000-0  17851-4 0  4879
2 18312  82.5545 353.7559 0010778 224.5844 135.4455 13.84079375445888
Meteor 2-17
1 18820U 88005A   96170.19737954  .00000027  00000-0  10715-4 0  9658
2 18820  82.5426  46.3077 0015528 287.9732  71.9729 13.84758036423665
DMSP B5D2-4
1 18822U 88006A   96170.02901258  .00000015  00000-0  24876-4 0  2791
2 18822  98.3838   2.0507 0006591  11.0607 349.0711 14.23192891434693
Glonass 34
1 19163U 88043A   96168.11867427 -.00000037  00000-0  10000-3 0   872
2 19163  65.2614  85.8737 0008330 156.5206 203.5240  2.13102183 62211
Glonass 36
1 19165U 88043C   96168.64491195 -.00000032  00000-0  10000-3 0  4944
2 19165  65.2359  85.8207 0002885 343.5851  16.4156  2.13101882 62845
METEOSAT 3
1 19215U 88051A   96164.40512295 -.00000119  00000-0  10000-3 0  2645
2 19215   3.2587  67.7350 0002148 121.9976 237.5930  0.96948198 17138
AO-13
1 19216U 88051B   96167.28069696  .00000326  00000-0  43448-3 0  2211
2 19216  57.2404 110.7445 7426044  42.2336 355.2251  2.09832268 29804
OKEAN 1
1 19274U 88056A   96169.32314192  .00000124  00000-0  12386-4 0   976
2 19274  82.5133 271.4629 0020955 119.4352 240.8948 14.82488133429398
Meteor 3-2
1 19336U 88064A   96170.07496679  .00000051  00000-0  10000-3 0  4893
2 19336  82.5390 165.7970 0015562 233.0809 126.8886 13.16977919379595
Glonass 39
1 19503U 88085C   96168.67479955 -.00000066  00000-0  10000-3 0  3822
2 19503  65.5679 324.7414 0005140 149.6629 210.3546  2.13101672 60336
NOAA 11
1 19531U 88089A   96169.79952336  .00000028  00000-0  40370-4 0  5519
2 19531  99.1850 187.9310 0010694 239.7453 120.2653 14.13095306398534
TDRS 2
1 19548U 88091B   96166.68997630 -.00000190  00000-0  10000-3 0  2122
2 19548   2.4926  72.0780 0004683  94.5788  69.5360  1.00262537 15504
Glonass 40
1 19749U 89001A   96169.18159617 -.00000027  00000-0  10000-3 0  6033
2 19749  65.2065  85.3573 0007581 260.7182  99.2098  2.13101588 57855
Glonass 41
1 19750U 89001B   96164.07482245 -.00000060  00000-0  10000-3 0  5063
2 19750  65.2274  85.6027 0007744 230.4896 129.4683  2.13101758 57768
GPS BII-01
1 19802U 89013A   96168.14423600 -.00000033  00000-0  10000-3 0  2478
2 19802  55.3352 110.6778 0020607 172.5592 187.4480  2.00577405 53696
Akebono
1 19822U 89016A   96166.92930623  .00005788  00000-0  33436-3 0  7389
2 19822  75.0661 125.2333 3742542 108.0495 295.6654  7.91765310166517
Meteor 2-18
1 19851U 89018A   96168.26827430  .00000032  00000-0  15402-4 0  4853
2 19851  82.5208 281.8058 0014603 344.9275  15.1455 13.84412426368701
MOP-1
1 19876U 89020B   96161.24387907 -.00000060  00000-0  10000-3 0  2009
2 19876   1.9712  71.2187 0020403 285.7561  73.2883  0.97108721  6543
TDRS 3
1 19883U 89021B   96163.26131617 -.00000278  00000-0  10000-3 0  2200
2 19883   0.0195 251.5245 0003223 241.4978 179.9048  1.00269001199056
GPS BII-02
1 20061U 89044A   96168.48818705 -.00000065  00000-0  10000-3 0  2275
2 20061  54.1986 286.4292 0156942 219.6780 139.1744  2.00562104 51440
Nadezhda 1
1 20103U 89050A   96169.72130491  .00000043  00000-0  29743-4 0  8070
2 20103  82.9591 108.2876 0039494  52.1754 308.2971 13.73866904348751
GPS BII-03
1 20185U 89064A   96168.83366552 -.00000027  00000-0  10000-3 0  2752
2 20185  55.1334 111.1187 0021985 328.9310  30.9134  2.00547263 50026
GMS 4
1 20217U 89070A   96169.81866898 -.00000370  00000-0  10000-3 0  3901
2 20217   1.7931  75.2175 0001474 173.4077  72.5120  1.00279713 25427
INTERCOSMOS 24
1 20261U 89080A   96167.24180659  .00000024  00000-0 -98498-6 0  5054
2 20261  82.5921 271.9594 1242603  46.1053 323.6107 12.47341680305662
GPS BII-04
1 20302U 89085A   96169.36004798  .00000023  00000-0  10000-3 0  2403
2 20302  53.2461 226.2175 0022682 189.7626 170.2817  2.00565658 48830
Meteor 3-3
1 20305U 89086A   96168.97497187  .00000044  00000-0  10000-3 0  5823
2 20305  82.5572 124.7539 0003793 300.5919  59.4826 13.04435258318170
COBE
1 20322U 89089A   96169.09287722  .00000120  00000-0  10472-3 0  2208
2 20322  98.9446 184.3431 0009474  39.3985 320.7866 14.03462458336917
Kvant-2
1 20335U 89093A   96170.10877825 -.00020905  00000-0 -26567-3 0  6144
2 20335  51.6497 119.1617 0005210  84.3857 275.5574 15.58180682373277
GPS BII-05
1 20361U 89097A   96167.87685453 -.00000069  00000-0  10000-3 0   878
2 20361  56.0211  53.3267 0076740 136.6134 224.0682  2.00565226 38286
COSMOS 2054 (Altair-1)
1 20391U 89101A   96167.52946759 -.00000141  00000-0  00000+0 0  3675
2 20391   3.8472  63.4454 0003953  40.8947 334.2964  1.00271917 23980
SPOT 2
1 20436U 90005A   96167.87152849 -.00000044  00000-0  00000+0 0   834
2 20436  98.6984 241.5542 0001242  57.9236 302.2061 14.20040131331653
UO-14
1 20437U 90005B   96166.74074743  .00000020  00000-0  24526-4 0  1890
2 20437  98.5434 249.8003 0010295 208.8911 151.1713 14.29923526333701
UO-15
1 20438U 90005C   96170.24381092 -.00000044  00000-0 -44649-6 0  9862
2 20438  98.5384 251.1780 0009198 202.9249 157.1521 14.29232001334078
PACSAT
1 20439U 90005D   96169.28757416 -.00000042  00000-0  45879-6 0  9887
2 20439  98.5559 254.5191 0010523 201.1820 158.8927 14.29977019334080
DO-17
1 20440U 90005E   96169.23984252 -.00000026  00000-0  66330-5 0  9880
2 20440  98.5605 255.1133 0010454 199.9800 160.0973 14.30119167334105
WO-18
1 20441U 90005F   96167.20068366  .00000026  00000-0  26874-4 0  9927
2 20441  98.5605 253.0496 0011072 208.0912 151.9670 14.30089136333810
LO-19
1 20442U 90005G   96169.22550183  .00000000  00000-0  16880-4 0  9888
2 20442  98.5624 255.5339 0011549 199.7762 160.2974 14.30197428334122
GPS BII-06
1 20452U 90008A   96169.26932984  .00000035  00000-0  10000-3 0  1785
2 20452  54.0413 166.7565 0063476  91.1135 269.1181  2.00569576 46811
MOS-1B
1 20478U 90013A   96170.20724484  .00000088  00000-0  10000-3 0  9460
2 20478  99.1283 239.6746 0004632 255.0562 105.0081 13.93963210244699
DEBUT
1 20479U 90013B   96167.63390708 -.00000007  00000-0  49248-4 0  9876
2 20479  99.0242 192.9902 0540668 127.4171 237.7411 12.83342098297704
FO-20
1 20480U 90013C   96166.11060605  .00000001  00000-0  65761-4 0  8847
2 20480  99.0260 191.5539 0540758 131.4210 233.4676 12.83233874297499
MOS-1B R/B
1 20491U 90013D   96170.21500174  .00000004  00000-0  78317-4 0  2528
2 20491  99.0746 259.9266 0469604 292.1683  63.0223 13.02994691301994
LACE
1 20496U 90015A   96169.87887338  .00000393  00000-0  19348-4 0  6596
2 20496  43.1016 199.4212 0009517  52.4515 307.7206 15.35672079353933
Nadezhda 2
1 20508U 90017A   96169.78093076  .00000061  00000-0  48839-4 0  8085
2 20508  82.9551 242.7326 0045954   5.7995 354.3682 13.73508845315975
OKEAN 2
1 20510U 90018A   96168.22939533  .00000104  00000-0  11105-4 0  5052
2 20510  82.5249 226.7021 0018567 327.3736  32.6316 14.78605677339533
GPS BII-07
1 20533U 90025A   96168.67733973 -.00000064  00000-0  00000+0 0  2245
2 20533  54.5764 287.1457 0051993  78.0527 282.5165  2.00567191 45577
PegSat
1 20546U 90028A   96166.46198163  .00002651  00000-0  48929-4 0  9385
2 20546  94.1086 350.8215 0060714  18.0024 342.3371 15.47295670344587
HST
1 20580U 90037B   96167.57974667  .00000270  00000-0  11533-4 0  8146
2 20580  28.4698 228.8837 0006286 155.1092 204.9800 14.91065652138348
MACSAT 2
1 20608U 90043B   96168.05434781  .00000126  00000-0  18670-4 0  1890
2 20608  89.9263 173.4106 0108622  60.2586 300.9381 14.64924157326124
Glonass 44
1 20619U 90045A   96168.61092445 -.00000067  00000-0  10000-3 0  3034
2 20619  65.1783 323.9741 0026435 203.6910 156.1721  2.13102641 47295
Glonass 45
1 20620U 90045B   96166.38331561 -.00000071  00000-0  10000-3 0  2925
2 20620  65.1874 324.0435 0008738  48.4215 311.6431  2.13102514 47283
Glonass 46
1 20621U 90045C   96168.32785728 -.00000069  00000-0  10000-3 0  8877
2 20621  65.2201 324.0390 0004991 164.6562 195.3368  2.13102359 47320
Kristall
1 20635U 90048A   96170.10877825 -.00020905  00000-0 -26567-3 0  4068
2 20635  51.6497 119.1617 0005210  84.3857 275.5574 15.58180682344100
ROSAT
1 20638U 90049A   96167.84622330 -.00000289  00000-0  89676-7 0  5694
2 20638  52.9893 305.1036 0014833 126.1792 234.1054 15.07415343332114
Meteor 2-19
1 20670U 90057A   96169.04917680 -.00000024  00000-0 -34688-4 0    06
2 20670  82.5441 347.9786 0014419 258.5489 101.4053 13.84129742301723
CRRES
1 20712U 90065A   96169.52871733  .00000265  00000-0  27218-3 0  2718
2 20712  17.8249 251.5580 7198118  17.0064 358.0601  2.35698783 43128
GPS BII-08
1 20724U 90068A   96168.99811225 -.00000028  00000-0  10000-3 0   610
2 20724  54.9751 108.6661 0129211 181.6045 178.3084  2.00565051 41445
Feng Yun1-2
1 20788U 90081A   96170.02446934  .00000151  00000-0  12810-3 0  9495
2 20788  98.8046 175.4553 0016467 128.1035 232.1620 14.01367419296218
Meteor 2-20
1 20826U 90086A   96169.41874246  .00000032  00000-0  15411-4 0  9977
2 20826  82.5244 284.1369 0013445 152.3884 207.7993 13.83631861288876
GPS BII-09
1 20830U 90088A   96165.56299961 -.00000082  00000-0  10000-3 0   426
2 20830  55.9511  51.3540 0067631  95.5002 265.3060  2.00564558 42017
GPS BIIA-10
1 20959U 90103A   96169.94917259 -.00000016  00000-0  10000-3 0   190
2 20959  55.1594 110.7008 0110010 235.1024 123.8336  2.00563212 40699
DMSP B5D2-5
1 20978U 90105A   96169.58743747  .00000078  00000-0  43353-4 0  6609
2 20978  98.5997 240.7180 0078518 168.5201 191.7821 14.32657586289778
Glonass 47
1 21006U 90110A   96169.75933461 -.00000023  00000-0  10000-3 0  8606
2 21006  65.1924  84.6794 0057402 190.3346 169.5652  2.13102625 43025
Glonass 48
1 21007U 90110B   96168.07346292 -.00000038  00000-0  10000-3 0  9956
2 21007  65.2033  84.8215 0035144 179.0687 180.9446  2.13101108 42975
Glonass 49
1 21008U 90110C   96168.43733930 -.00000035  00000-0  00000+0 0  2412
2 21008  65.1881  84.7451 0010061 276.2236  83.6747  2.13098686 42977
AO-21
1 21087U 91006A   96166.97077148  .00000094  00000-0  82657-4 0  7134
2 21087  82.9376 323.3498 0033433 211.1966 148.7206 13.74569042269702
RS-12/13
1 21089U 91007A   96168.23956292  .00000060  00000-0  47515-4 0  8963
2 21089  82.9230 190.0432 0027659 235.8409 124.0123 13.74071093268908
MOP-2
1 21140U 91015B   96170.08668403 -.00000010  00000-0  00000+0 0  2109
2 21140   0.5445  76.3332 0000902  17.7190 203.7246  1.00276542 21619
Nadezhda 3
1 21152U 91019A   96169.67134936  .00000065  00000-0  54084-4 0  4970
2 21152  82.9230 145.4329 0042725 343.7013  16.2769 13.73534472263816
Glonass 50
1 21216U 91025A   96169.30876180 -.00000064  00000-0  10000-3 0  5130
2 21216  64.9206 323.4938 0006401 186.4265 173.5515  2.13103335 40525
Glonass 51
1 21217U 91025B   96169.37976486 -.00000064  00000-0  10000-3 0  9154
2 21217  64.9246 323.4885 0010161 226.9186 132.9811  2.13101569 40515
Glonass 52
1 21218U 91025C   96164.32836971 -.00000063  00000-0  10000-3 0  3927
2 21218  64.9502 323.6441 0010384 355.5186   4.4567  2.13102512 40416
GRO
1 21225U 91027B   96169.24882969  .00001113  00000-0  17982-4 0  3654
2 21225  28.4596 184.1818 0003144 207.1845 152.8558 15.44051624169943
Meteor 3-4
1 21232U 91030A   96168.53883946  .00000051  00000-0  10000-3 0  8987
2 21232  82.5393  13.2536 0013506 157.6416 202.5312 13.16472047247459
NOAA 12
1 21263U 91032A   96169.63108393  .00000108  00000-0  67226-4 0  9742
2 21263  98.5586 188.7278 0011916 277.1950  82.7872 14.22629916264522
OKEAN 3
1 21397U 91039A   96166.06348820  .00000087  00000-0  91551-5 0  1952
2 21397  82.5241 142.9603 0024431  48.1594 312.1686 14.76482919270902
GPS BIIA-11
1 21552U 91047A   96167.23158892 -.00000072  00000-0  10000-6 0  9811
2 21552  56.2144  49.1069 0070282 248.0267 111.2742  2.00565837 36234
ERS-1
1 21574U 91050A   96169.25863021  .00000028  00000-0  26708-4 0  2969
2 21574  98.5476 243.3297 0002042  19.8290 340.2971 14.32249670257454
UO-22
1 21575U 91050B   96169.18961443  .00000028  00000-0  23701-4 0  6941
2 21575  98.3500 235.5743 0006837 269.5220  90.5183 14.37027016258064
ORBCOMM-X
1 21576U 91050C   96169.21836051  .00000012  00000-0  18378-4 0  7894
2 21576  98.3464 233.5520 0003161 288.3438  71.7402 14.36441117257955
TUBSAT-A
1 21577U 91050D   96166.68437891 -.00000040  00000-0  65295-6 0  6884
2 21577  98.3446 231.6901 0006182 290.8988  69.1570 14.36518806257623
SARA
1 21578U 91050E   96167.22393766  .00000172  00000-0  69401-4 0  8897
2 21578  98.3793 240.2263 0003963 275.8551  84.2189 14.39203411258057
TDRS 4
1 21639U 91054B   96168.57557262  .00000077  00000-0  00000+0 0   443
2 21639   0.0543 137.6868 0002844 311.7460 208.4976  1.00269974 17859
Meteor 3-5
1 21655U 91056A   96166.47234030  .00000051  00000-0  10000-3 0  8956
2 21655  82.5498 322.3767 0013258 174.0914 186.0370 13.16847503232316
UARS
1 21701U 91063B   96166.54266157 -.00000136  00000-0  91840-5 0  7686
2 21701  56.9845 120.5810 0005113 108.9740 251.1842 14.96518430259961
DMSP B5D2-6
1 21798U 91082A   96169.59922308  .00000104  00000-0  78581-4 0  3268
2 21798  98.9476 186.9115 0011726 225.8626 134.1581 14.13971909234984
Glonass 53
1 21853U 92005A   96166.41711383 -.00000054  00000-0  10000-3 0   996
2 21853  65.1309  84.4617 0007457 212.8892 147.0651  2.13102286 34062
Glonass 54
1 21854U 92005B   96167.64243708 -.00000043  00000-0  00000+0 0  3024
2 21854  65.1398  84.4065 0017235  15.8269 344.2339  2.13104647 34070
Glonass 55
1 21855U 92005C   96167.24046422 -.00000047  00000-0  00000+0 0  2905
2 21855  65.1400  84.4199 0006748 203.2162 156.7725  2.13102743 34053
JERS-1
1 21867U 92007A   96169.86787758  .00001142  00000-0  10000-3 0  8956
2 21867  97.6890 247.1466 0001277  91.3033 268.8436 14.98657564237960
GPS BIIA-12
1 21890U 92009A   96167.19614241  .00000030  00000-0  00000+0 0  8134
2 21890  53.7982 226.7181 0059515 193.0050 166.9280  2.00575092 31608
GPS BIIA-13
1 21930U 92019A   96168.36632811 -.00000089  00000-0  10000-3 0  7693
2 21930  55.7266 348.6534 0027428 183.0418 176.9609  2.00631042 30558
EUVE
1 21987U 92031A   96168.23507890  .00000547  00000-0  15536-4 0  5497
2 21987  28.4320 189.3839 0009385  45.2478 314.8860 15.19801378223532
SAMPEX
1 22012U 92038A   96166.92139762  .00000277  00000-0  21747-4 0  7243
2 22012  81.6710 121.6705 0117464 178.2527 181.9124 14.91665299214891
GPS BIIA-14
1 22014U 92039A   96169.93828255  .00000039  00000-0  00000+0 0  7297
2 22014  54.8496 168.5502 0110149 328.6711  30.6494  2.00578774 22424
Glonass 56
1 22056U 92047A   96167.60786042 -.00000072  00000-0  00000+0 0  2104
2 22056  64.7704 323.5929 0003718 272.2136  87.7336  2.13103242 30151
Glonass 57
1 22057U 92047B   96167.43499007 -.00000072  00000-0  00000+0 0  1860
2 22057  64.7766 323.6247 0006421 330.2469  29.7076  2.13102267 30122
Glonass 58
1 22058U 92047C   96166.43589598 -.00000073  00000-0  10000-3 0  1153
2 22058  64.7781 323.6697 0009280 277.4251  82.4591  2.13102902 30153
TOPEX
1 22076U 92052A   96167.89319365 -.00000038  00000-0  10000-3 0  9703
2 22076  66.0413 215.3522 0007909 267.6590  92.3520 12.80930037179954
KO-23
1 22077U 92052B   96167.54115140 -.00000037  00000-0  10000-3 0  5841
2 22077  66.0779 192.9046 0013351 300.2225  59.7468 12.86297549180598
S80/T
1 22078U 92052C   96170.10918973 -.00000037  00000-0  10000-3 0  5821
2 22078  66.0786 186.0295 0014645 298.5857  61.3687 12.86580599181014
GPS BIIA-15
1 22108U 92058A   96161.92292972 -.00000008  00000-0  10000-3 0  7409
2 22108  54.0327 227.8037 0119971 158.1282 202.4737  2.00583081 27449
FREJA
1 22161U 92064A   96168.71022151 -.00000096  00000-0  75699-5 0  6211
2 22161  62.9820 242.2542 0840860  17.9050 344.9766 13.21901599178364
LAGEOS II
1 22195U 92070B   96168.11582811 -.00000009  00000-0  10000-3 0  4971
2 22195  52.6757 352.3335 0137675  76.3896 285.1957  6.47293529 86205
GPS BIIA-16
1 22231U 92079A   96170.08298668  .00000039  00000-0  10000-4 0  7431
2 22231  54.6764 169.6902 0039249 280.4200  79.1517  2.00570919 26180
GPS BIIA-17
1 22275U 92089A   96169.21499305  .00000037  00000-0  10000-3 0  7442
2 22275  54.6331 167.2211 0076140 240.6938 118.0678  2.00580473 25571
TDRS 5
1 22314U 93003B   96169.81072304 -.00000288  00000-0  10000-3 0  6386
2 22314   2.6180  69.9799 0003144   3.6262  77.5169  1.00256028 12597
GPS BIIA-18
1 22446U 93007A   96169.30088164 -.00000061  00000-0  10000-3 0  7235
2 22446  54.2068 287.2394 0089939  11.4015 348.8052  2.00552768 24562
Glonass 59
1 22512U 93010A   96168.76540891 -.00000032  00000-0  10000-3 0  8039
2 22512  65.1568  84.2402 0008661 182.8840 177.1251  2.13101949 25682
Glonass 60
1 22513U 93010B   96167.29592077 -.00000046  00000-0  00000+0 0  9288
2 22513  65.1463  84.2869 0005249 202.2214 157.7612  2.13102654 25842
Glonass 61
1 22514U 93010C   96169.93599970 -.00000022  00000-0  00000+0 0  9229
2 22514  65.1649  84.2008 0009127 189.6705 170.3308  2.13101924 25905
ASTRO-D
1 22521U 93011A   96167.08611852  .00000546  00000-0  31860-4 0  5012
2 22521  31.1042  78.4998 0055784 146.7758 213.6404 15.02932534182158
UFO F1
1 22563U 93015A   96162.00000000 -.00000263  00000-0  00000+0 0  5054
2 22563  25.3319 288.7553 0004133 239.5046 212.6774  0.99252190 11964
GPS BIIA-19
1 22581U 93017A   96167.44814689 -.00000090  00000-0  10000-3 0  5452
2 22581  55.2185 348.1006 0068550  38.7707 321.7548  2.00559662 23587
ARSENE
1 22654U 93031B   96166.91447192 -.00000141  00000-0  10000-3 0  3669
2 22654   3.2208  73.3495 2870936 238.4255  89.9013  1.42202973 11564
GPS BIIA-20
1 22657U 93032A   96169.57954779 -.00000088  00000-0  10000-3 0  6586
2 22657  55.2398 347.8828 0073797 212.9469 146.5963  2.00573660 18958
RADCAL
1 22698U 93041A   96169.23732837  .00000079  00000-0  29317-4 0  4964
2 22698  89.5416 271.3878 0091493 327.7911  31.7709 14.21373895154431
GPS BIIA-21
1 22700U 93042A   96164.05727828  .00000010  00000-0  10000-3 0  5625
2 22700  54.2004 228.5374 0048798 358.2946   1.7646  2.00556419 21641
NOAA 13
1 22739U 93050A   96169.91065181  .00000067  00000-0  62725-4 0   879
2 22739  99.0433 125.1510 0009470 219.0645 140.9832 14.10966280147157
GPS BIIA-22
1 22779U 93054A   96167.63716190 -.00000072  00000-0  10000-3 0  6193
2 22779  54.3691 287.3623 0015277 260.6267  99.2011  2.00572510 20476
Meteor 2-21
1 22782U 93055A   96169.99827641  .00000050  00000-0  32204-4 0  4917
2 22782  82.5466 346.4972 0022245 339.5146  20.5113 13.83056078141240
UFO F2
1 22787U 93056A   96168.78863925 -.00000067  00000-0  00000+0 0  6481
2 22787   4.1259 327.1011 0003314  84.1470 209.8184  1.00266507  8826
SPOT 3
1 22823U 93061A   96168.26468582 -.00000044  00000-0  00000+0 0  5575
2 22823  98.6996 242.0219 0001415  78.7578 281.3758 14.20041037141102
STELLA
1 22824U 93061B   96169.24798038 -.00000052  00000-0 -37321-5 0  4781
2 22824  98.5794 244.2053 0005597 231.1767 128.8914 14.27104702141945
AO-27
1 22825U 93061C   96169.77725608 -.00000055  00000-0 -48921-5 0  4818
2 22825  98.5805 245.3148 0007873 228.2021 131.8441 14.27697011142079
IO-26
1 22826U 93061D   96167.74127818 -.00000007  00000-0  14714-4 0  4798
2 22826  98.5787 243.4808 0008339 234.9298 125.1100 14.27805941141798
HEATHSAT
1 22827U 93061E   96169.27084460  .00000021  00000-0  25799-4 0  5414
2 22827  98.5791 244.8874 0008183 220.6873 139.3695 14.27940417142021
ITAMSAT
1 22828U 93061F   96169.26409645 -.00000008  00000-0  14245-4 0  4587
2 22828  98.5771 245.0363 0009286 215.7528 144.3031 14.28143695110123
PO-28
1 22829U 93061G   96167.73937421  .00000002  00000-0  18416-4 0  4729
2 22829  98.5775 243.5960 0009316 219.8014 140.2482 14.28124453141820
KO-25
1 22830U 93061H   96169.55280118 -.00000023  00000-0  78482-5 0  4912
2 22830  98.4650 234.2308 0011285 185.4827 174.6229 14.28110256142089
GPS BIIA-23
1 22877U 93068A   96164.19916804 -.00000090  00000-0  10000-3 0  4322
2 22877  55.6466  49.3630 0040888 300.3333  59.2802  2.00577019 19296
METEOSAT 6
1 22912U 93073B   96170.10750579 -.00000090  00000-0  10000-3 0  4837
2 22912   0.1178 329.8504 0000502 126.5890 198.5408  1.00272106  7869
HST Array
1 22920U 90037C   96168.91763118  .00002933  00000-0  19144-3 0  4770
2 22920  28.4682 136.6824 0004134 124.9477 235.1485 15.04670979139383
Meteor 3-6
1 22969U 94003A   96169.22099282  .00000051  00000-0  10000-3 0  2622
2 22969  82.5629 260.4686 0014627 240.3240 119.6428 13.16735517115051
TUBSAT-B
1 22970U 94003B   96168.77723656  .00000051  00000-0  10000-3 0  2532
2 22970  82.5550 260.6739 0014787 238.1518 121.8164 13.16827225115002
GPS BIIA-24
1 23027U 94016A   96168.76188620 -.00000090  00000-0  10000-3 0  3709
2 23027  55.0784 349.8746 0063359 198.9084 160.8749  2.00554770 16698
Glonass 62
1 23043U 94021A   96169.07503097 -.00000066  00000-0  00000+0 0  3671
2 23043  64.6544 323.9017 0006035 177.1300 182.8573  2.13102871 17008
Glonass 63
1 23044U 94021B   96169.89604851 -.00000061  00000-0  00000+0 0  3341
2 23044  64.6460 323.8649 0029654 201.4590 158.4053  2.13102892 17027
Glonass 64
1 23045U 94021C   96167.25765907 -.00000073  00000-0  00000+0 0  3411
2 23045  64.6352 323.9765 0011572  34.0125 326.0506  2.13101791 16967
GOES 8
1 23051U 94022A   96167.74436637 -.00000260  00000-0  10000-3 0  5390
2 23051   0.0220 273.0768 0004912 232.3406 312.3111  1.00271433 15353
MSTI 2
1 23101U 94028A   96167.61244025  .00002895  00000-0  46261-4 0  3253
2 23101  97.0838   1.1285 0010967 336.9889  23.0866 15.53948957119057
STRV-1A
1 23125U 94034B   96169.26889750  .00001800  00000-0  44144-3 0  2878
2 23125   7.0599 239.5400 7255521  61.1271 351.9603  2.32053496 16124
STRV-1B
1 23126U 94034C   96168.48955484 -.00000311  00000-0  10000-4 0  2557
2 23126   7.0626 240.1427 7258693  60.1378 352.3902  2.31968847 16146
Nadezhda 4
1 23179U 94041A   96168.82250055 -.00000008  00000-0 -24758-4 0  1977
2 23179  82.9457 236.8605 0037288 122.5523 237.9236 13.75681307 96746
Glonass 65
1 23203U 94050A   96167.39530079  .00000074  00000-0  00000+0 0  2985
2 23203  64.7735 204.1789 0006581 161.5018 198.6065  2.13102202 14369
Glonass 66
1 23204U 94050B   96167.62899057  .00000072  00000-0  00000+0 0  3222
2 23204  64.7588 204.1945 0015431 341.0983  18.9224  2.13102128 14368
Glonass 67
1 23205U 94050C   96168.45015136  .00000066  00000-0  00000+0 0  2999
2 23205  64.7652 204.1554 0003153 283.3201  76.7239  2.13102653 14389
DMSP B5D2-7
1 23233U 94057A   96169.57611882  .00000097  00000-0  76058-4 0  8150
2 23233  98.8259 228.3405 0011998 174.7201 185.4105 14.12713337 92883
OKEAN 1-7
1 23317U 94066A   96162.24685005  .00000110  00000-0  13116-4 0  1591
2 23317  82.5437  65.4167 0027643 100.4870 259.9457 14.74022483 89517
ELEKTRO
1 23327U 94069A   96167.74621234 -.00000108  00000-0  00000+0 0  1657
2 23327   0.1098 178.5774 0007269 278.3397 152.3112  1.00271581  5981
RESURS 1-3
1 23342U 94074A   96168.53452408  .00000030  00000-0  12985-4 0  5043
2 23342  97.9665 225.6100 0001601  59.5521 300.5844 14.69841355 86711
Glonass 68
1 23396U 94076A   96169.70152364 -.00000024  00000-0  00000+0 0  2717
2 23396  65.0763  84.2637 0027907 190.5716 169.3872  2.13102924 12256
Glonass 69
1 23397U 94076B   96167.53116302 -.00000044  00000-0  00000+0 0  2654
2 23397  65.0710  84.3443 0013258 320.5740  39.3357  2.13102082 12205
Glonass 70
1 23398U 94076C   96168.35341823 -.00000036  00000-0  00000+0 0  2824
2 23398  65.0686  84.2882 0003596 296.7515  63.2166  2.13102206 12237
LUCH (Altair-2)
1 23426U 94082A   96169.41602956 -.00000276  00000-0  00000+0 0  3342
2 23426   1.4638 267.5867 0002295 204.4675  38.4376  1.00282660  5504
RS-15
1 23439U 94085A   96167.67955636 -.00000039  00000-0  10000-3 0  1408
2 23439  64.8205  25.5230 0160994 199.4495 160.0244 11.27526030 60612
NOAA 14
1 23455U 94089A   96169.78057991 -.00000001  00000-0  24061-4 0  6420
2 23455  98.9464 115.2570 0008326 240.7297 119.3044 14.11593169 75534
Glonass 71
1 23511U 95009A   96168.78178022 -.00000068  00000-0  00000+0 0  1974
2 23511  64.6640 324.1857 0005728 206.2768 153.6800  2.13103347  9964
Glonass 72
1 23512U 95009B   96167.96210820 -.00000071  00000-0  00000+0 0  2129
2 23512  64.6677 324.2135 0005145 330.6085  29.3553  2.13101944  9945
Glonass 73
1 23513U 95009C   96168.72364898 -.00000068  00000-0  00000+0 0  2227
2 23513  64.6700 324.2055 0012515 196.2589 163.6866  2.13102637  9969
GMS 5
1 23522U 95011B   96162.31032554 -.00000314  00000-0  10000-3 0  1239
2 23522   0.3531 331.1253 0004101 235.7273 301.8182  1.00249550  4385
DMSP B5D2-8
1 23533U 95015A   96169.43629500  .00000009  00000-0  28264-4 0  5537
2 23533  98.8377 171.8958 0008469  57.0979 303.1006 14.12742104 63663
Microlab 1
1 23547U 95017C   96166.46179595  .00000204  00000-0  74893-4 0  1136
2 23547  69.9785 176.3936 0013864 192.0653 168.0140 14.45539962 63276
OFEQ 3
1 23549U 95018A   96170.08847754  .00014880  00000-0  37505-3 0  2630
2 23549 143.3665 233.5456 0222908 146.0866 215.4320 15.15737186 66503
GFZ-1
1 23558U 86017JE  96168.51562545  .00001214  00000-0  19479-4 0  1341
2 23558  51.6512 116.7630 0005209 216.4536 143.6100 15.62220440589904
ERS-2
1 23560U 95021A   96168.86141917  .00000148  00000-0  71167-4 0  2420
2 23560  98.5457 242.9417 0001135  90.2660 269.8654 14.32247624 60526
Spektr
1 23579U 95024A   96170.10877825 -.00020905  00000-0 -26567-3 0  3662
2 23579  51.6497 119.1617 0005210  84.3857 275.5574 15.58180682 61588
GOES 9
1 23581U 95025A   96167.40430022  .00000077  00000-0  00000+0 0  2046
2 23581   0.2011  82.4729 0000778 279.4890 272.5312  1.00281681  3909
Helios 1A
1 23605U 95033A   96169.89660021  .00000061  00000-0  20701-4 0  2320
2 23605  98.1215 105.5920 0001329  63.8707 296.2632 14.63844315 50668
UPM SAT 1
1 23606U 95033B   96169.86306480  .00000077  00000-0  22269-4 0  1769
2 23606  98.1013 106.6166 0007024 174.4425 185.6858 14.67253158 50814
CERISE
1 23607U 95033C   96169.24588739  .00000058  00000-0  18898-4 0   964
2 23607  98.1036 105.8827 0005599 174.4451 185.6817 14.66946705 50742
TDRS 6
1 23613U 95035B   96164.42597162 -.00000066  00000-0  10000-3 0  1741
2 23613   0.5850  82.5156 0003337 226.6902 277.4964  1.00024421  3337
Glonass 74
1 23620U 95037A   96167.56923432  .00000072  00000-0  00000+0 0  1484
2 23620  64.8305 204.0345 0018603 173.8272 186.2766  2.13102866  6974
Glonass 75
1 23621U 95037B   96168.68495806  .00000064  00000-0  00000+0 0  1502
2 23621  64.8351 203.9915 0018192 183.1855 176.8814  2.13102365  6996
Glonass 76
1 23622U 95037C   96170.15099331  .00000055  00000-0  00000+0 0  1512
2 23622  64.8311 203.9527 0036770 167.8816 192.2802  2.13102530  7028
Prognoz-M2
1 23632U 95039A   96169.42795100 -.00000770  00000-0  00000+0 0   626
2 23632  70.4510 249.7850 8342410 322.1730  45.3330  0.26371500   855
SICH-1
1 23657U 95046A   96168.52020211  .00000078  00000-0  84694-5 0   868
2 23657  82.5344 201.1734 0029704  53.3262 307.0671 14.73477678 42736
RADARSAT
1 23710U 95059A   96168.07996100 -.00000044  00000-0  00000+0 0  1476
2 23710  98.5792 174.7833 0001074  62.1675 297.9616 14.29974255 32088
Glonass 77
1 23734U 95068A   96167.45311596  .00000073  00000-0  00000+0 0  1272
2 23734  64.8267 203.9406 0019041 318.7391  41.2075  2.13102086  3932
Glonass 78
1 23735U 95068B   96167.19695604  .00000075  00000-0  00000+0 0  1204
2 23735  64.8262 203.9567 0008255 224.0691 135.9474  2.13125246  3929
Glonass 79
1 23736U 95068C   96167.68763462  .00000072  00000-0  00000+0 0  1057
2 23736  64.8152 203.9523 0008415 206.7760 153.2626  2.13101873  3935
XTE
1 23757U 95074A   96166.11930589  .00000495  00000-0  12485-4 0   648
2 23757  22.9848  72.6013 0012927  24.0797 336.0270 14.97656746 25001
1996010D
1 23797U 96010D   96168.42658777  .00080319  92489-6  14597-2 0   976
2 23797  48.1268 250.3584 7334340  29.1026 357.0426  2.26215618  2642
Soyuz TM-23
1 23798U 96011A   96170.10877825 -.00020905  00000-0 -26567-3 0  1020
2 23798  51.6497 119.1617 0005210  84.3857 275.5574 15.58180682 18347
Polar
1 23802U 96013A   96106.86263936  .00000098  00000-0  00000+0 0   222
2 23802  85.9670  26.8051 6631391 289.5093  13.3680  1.36949782   706
1996010E
1 23824U 96010E   96167.25592034  .00000500  00000-0  20757-2 0   678
2 23824  47.7182 252.6659 7261892  27.3684 357.0151  2.21663393  2571
GPS BIIA-25
1 23833U 96019A   96169.89623124 -.00000088  00000-0  10000-3 0   385
2 23833  54.6826 348.0230 0038523 145.9284 214.3449  2.00564583  1692
Priroda
1 23848U 96023A   96170.10877825 -.00020905  00000-0 -26567-3 0   556
2 23848  51.6497 119.1617 0005210  84.3857 275.5574 15.58180682  8678
MSX
1 23851U 96024A   96168.96257640 -.00000047  00000-0  00000+0 0   351
2 23851  99.3742 148.1952 0007654 158.2544 201.8933 13.97718885  7466
Progress M-31
1 23860U 96028A   96170.10877825 -.00020905  00000-0 -26567-3 0   476
2 23860  51.6497 119.1617 0005210  84.3857 275.5574 15.58180682  6849
Palapa C2
1 23864U 96030A   96168.54331771 -.00000365  00000-0  00000+0 0   414
2 23864   0.0670  75.5189 0000395  41.2480 107.9347  1.00268538   328
MSTI 3
1 23868U 96031A   96167.55697415 -.00000091  00000-0 -11502-6 0   298
2 23868  97.1229 358.0352 0011655 175.8045 184.3303 15.46133891  4572
1996031B
1 23869U 96031B   96169.56708370  .00044800  27156-5  18593-3 0   334
2 23869  97.0766   1.3398 0039050  50.1352 310.3497 15.84749834  4983
Galaxy 9
1 23877U 96033A   96169.58472801  .00000019  00000-0  00000+0 0   297
2 23877   0.0488 142.0792 0003028  21.0843 190.3650  1.00272013   263
1996033B
1 23878U 96033B   96169.44108795  .00002213  00000-0  78330-4 0   127
2 23878  25.8294 289.1378 0842734  61.8637 306.4455 13.82139368  3371
1996033C
1 23879U 96033C   96168.78257675 -.00000136  00000-0  00000+0 0   101
2 23879  23.0697  69.9664 6780820   8.8715 358.8016  2.11147804   502
Gorizont 32
1 23880U 96034A   96167.83555556  .00000092  00000-0  00000+0 0   232
2 23880   1.4482 283.7344 0015101 331.9641   2.1528  1.00269115   214
1996034B
1 23881U 96034B   96149.37506907  .12519477  12777-4  84098-4 0   213
2 23881  51.6253 265.1638 0010849 276.2132  83.7707 16.52789070   548
1996034C
1 23882U 96034C   96146.93642506  .15866946  12578-4  59433-3 0    42
2 23882  51.6150 278.9349 0004235 339.3430  27.3955 16.44057387   145
1996034D
1 23883U 96034D   96168.31748417 -.00000028  00000-0  00000+0 0    71
2 23883   1.4729 283.6495 0024029 339.6159  21.1249  0.97946304   213
1996034E
1 23886U 96034E   96165.45460302  .00000626  00000-0  43450-3 0    62
2 23886  47.3068 278.2081 7318972   5.0169 359.3421  2.22641382   437
1996034F
1 23887U 96034F   96166.38748951  .00000120  00000-0  33137-3 0    76
2 23887  47.3599 278.0560 7299951   5.1437 359.3563  2.22247137   450
1983063A
1 23906U 83063E   96166.81112448  .00000569  00000-0  20521-3 0    25
2 23906  82.0249 206.4326 0041766 186.4589 173.6064 14.31840248676196
1996016C
1 23909U 96016C   96163.74233618  .40456583  67558-5  31410-2 0    32
2 23909  67.1294 123.8472 0069255  57.9050 302.6676 16.29168534 14295
1996035A
1 23915U 96035A   96169.39938429 -.00000119  00000-0  00000+0 0    94
2 23915   0.9769 181.9438 1997089 181.1831 181.1212  1.31745179    52
1996035B
1 23916U 96035B   96169.43042824 -.00000133  00000-0  00000+0 0    35
2 23916   1.3619  23.8149 1571082 336.2246 198.8749  1.24514823    51
--
Dr TS Kelso                          Adjunct Professor of Space Operations
[e-mail]                   Air Force Institute of Technology


From [e-mail] Tue Jun 25 20:34:03 1996
From: "heavens" <[e-mail]>
Newsgroups: rec.radio.amateur.space
Subject: "OUT OF THIS WORLD (literally) www.heavensgate.com"
Date: 20 Jun 1996 01:26:37 -0400
Message-ID: <[e-mail]>
Reply-To: [e-mail]

             HEAVEN'S GATE

- How and When the door to the Physical
  Kingdom Level Above Human May Be Entered
- Organized Religions Are Killers of Souls
- UFO's & Space Aliens - Sorting Good from Bad
- Final Warning for Possible Survivors

           www.heavensgate.com


From [e-mail] Tue Jun 25 20:34:04 1996
From: [e-mail] (William Roth)
Newsgroups: rec.radio.amateur.space
Subject: Re: Q: How do programs control KC traker?
Date: 21 Jun 1996 07:13:33 GMT
Message-ID: <4qdi2t$[e-mail]>
References: <[e-mail]>

In article <[e-mail]>, [e-mail]

says...
>
>From the few programs I've
>downloaded and tried, it looks like they only work with the KC Tracker.

>I know that the KC tracker is an ISA bus card, so I assume it communicates
>through an I/O address. I am interested in what is on the KC tracker as
>far as hardware goes. Is it just a parallel port, micro-based?

It uses an I/O address that is switch selectable on the board. It does not
involve serial or parallel ports at all, neither does it use an IRQ.

>What I would really like is a program that outputs the Az/El data out the
>serial or parallel port.

This you would need to write yourself. There are products already made that
communicate through the serial port. One good one that I use is the Sat trak
IV. For more info, see my web page...

http://www.teleport.com/~n7ryw/asatpage.html

This is a microcontroller board that controls the rotors and the radio. It is
based on the 8052 mcu, probably just the thing you were thinking of.
TTYL



From [e-mail] Tue Jun 25 20:34:05 1996
From: [e-mail] (John Jordan)
Newsgroups: rec.radio.amateur.space
Subject: check out my nifty project
Date: Fri, 21 Jun 1996 11:37:39 GMT
Message-ID: <4qe33o$[e-mail]>

I get the biggest kick out of chatting with "space people," have
several MIR and one SAREX voice contact, this is almost too fun to be
legal!  Anyway, I usually go to a nearby hill-top to do my "fishing"
and got tired of lugging all the radio stuff, so I built a nifty
"ham-shack-in-a-box"..  Not terribly unusual, but it was a ball to
build.  If you have a web browser that does graphics, I invite you to
check it out and send me any comments or questions.. You'll find it
at:

http://www.cyberhighway.net/~rb/project.html

A note to all of you who frequent this group but don't have a Amateur
Radio License, GET ON THE BALL!  It's never been easier to get a HAM
license, you do NOT need to learn code to use the frequencies that are
used by MIR and the Shuttle (SAREX)!  A friend of mine, with NO
previous radio/electronic knowledge borrowed my study book on
Wednesday evening, took his test on Saturday morning and passed with a
98%!  You can do it too!  Amateur Radio NEEDS new blood, if we don't
use these frequencies, we'll loose 'em to big corporations and the
government, thats a fact!  If you have any questions about becomming a
"HAM," please ask me!  I'll trip over my big feet to get you the
information you seek!  The first time you call for an astronaut, beit
on the MIR or the Shuttle, and a voice comes back to you saying your
call sign and a friendly greeting, it will all be worth it!  Trust me,
it's litterally the most fun you can have with your clothes on.. hehe

Take Care and 73's

John  KB7VZL




From [e-mail] Tue Jun 25 20:34:06 1996
From: [e-mail] (D. Loren Fields)
Newsgroups: rec.radio.amateur.space
Subject: (no subject)
Date: 21 Jun 96 17:48:19 GMT
Message-ID: <[e-mail]>

I am looking for a GAP "Challenger DX" vertical antenna, 80 - 2 meters,
in reasonably good shape.  Also want to find a nice, used IC-2000 H 2M
transceiver, too.  Please E-Mail at [e-mail]   TNX!




From [e-mail] Tue Jun 25 20:34:07 1996
From: [e-mail] (TS Kelso)
Newsgroups: rec.radio.amateur.space
Subject: NORAD Two-Line Orbital Element Set: Space Shuttle (96173.25000000)
Date: 21 Jun 1996 21:07:46 GMT
Message-ID: <4qf2v2$[e-mail]>
Keywords: Space Shuttle, Orbital Elements, Keplerian, NORAD

The most current orbital elements from the NORAD two-line element sets are
carried on the *NEW* Celestial WWW,

                    http://www.grove.net/~tkelso/

and are updated daily (when possible).  Documentation and tracking software ar
e
also available on this system.  As a service to the satellite user community,
the most current elements for the current shuttle mission are provided below.

Element sets (also updated daily), shuttle elements, and some documentation
and software are also available via anonymous ftp from archive.afit.af.mil
(129.92.1.66) in the directory pub/space.

******************************************************************************
*

STS 78
1 23931U 96036A   96173.25000000  .00000778  54141-5  44766-5 0    57
2 23931  39.0156   5.7513 0007759 278.5891 160.5994 16.00552170   116
--
Dr TS Kelso                          Adjunct Professor of Space Operations
[e-mail]                   Air Force Institute of Technology


From [e-mail] Tue Jun 25 20:34:13 1996
From: [e-mail] (TS Kelso)
Newsgroups: rec.radio.amateur.space
Subject: NORAD Two-Line Orbital Element Sets (TLE828)
Date: 21 Jun 1996 21:14:27 GMT
Message-ID: <4qf3bj$[e-mail]>
Keywords: Satellite, Orbital Elements, Keplerian, NORAD

The most current orbital elements from the NORAD two-line element sets are
carried on the *NEW* Celestial WWW,

                    http://www.grove.net/~tkelso/

and are updated daily (when possible). Documentation and tracking software are
also available on this system.

Element sets (also updated daily) and some documentation and software are
available via anonymous ftp from archive.afit.af.mil (129.92.1.66) in the
directory pub/space.

As a service to the satellite user community, the most current of these
elements are uploaded weekly to sci.space.news and rec.radio.amateur.space.
This week's elements are provided below.

******************************************************************************
*

- Current Two-Line Element Sets #828 -
Alouette 1
1 00424U 62049A   96171.05079437  .00000110  00000-0  11850-3 0  2072
2 00424  80.4600 281.9023 0025334  27.8267 332.4233 13.67870651682598
ATS 1
1 02608U 66110A   96164.88620970 -.00000350  00000-0  10000-3 0  9708
2 02608  14.6190 352.8750 0009241  81.9555 278.1241  1.00338050 24829
ATS 3
1 03029U 67111A   96169.18581740 -.00000121  00000-0  10000-3 0  5057
2 03029  14.9144 359.8059 0010091 278.1114 309.3341  1.00273250104764
Starlette
1 07646U 75010A   96172.94657632 -.00000152  00000-0 -91003-5 0  9788
2 07646  49.8248 133.8752 0205956 242.9339 115.0402 13.82190805 79486
LAGEOS
1 08820U 76039A   96169.54373306  .00000015  00000-0  10000-3 0  2011
2 08820 109.8549  26.1389 0043692 129.9811 230.4852  6.38664447213851
ETS-2
1 09852U 77014A   96144.29788450  .00000122  00000-0  10000-3 0   710
2 09852  13.2121  33.2352 0001161 167.8158 192.2040  1.00002229 17393
GOES 2
1 10061U 77048A   96167.55760218  .00000051  00000-0  10000-3 0  6837
2 10061  12.3630  37.1159 0010596 123.7954 129.4310  1.00261245 14425
IUE
1 10637U 78012A   96168.49745209 -.00000284  00000-0  10000-3 0  2582
2 10637  35.7447  83.1505 1366793  56.7909 263.5492  1.00239446 19923
GPS BI-01
1 10684U 78020A   96171.81955848 -.00000054  00000-0  10000-3 0  4560
2 10684  64.9862  23.8090 0059454 162.5605 197.7011  1.98069443119461
GPS BI-02
1 10893U 78047A   96168.31186277 -.00000013  00000-0  10000-3 0  2501
2 10893  63.1713 261.0267 0231709  15.2178 345.5229  2.01627236132795
GOES 3
1 10953U 78062A   96172.29870395 -.00000133  00000-0  10000-3 0  6707
2 10953  11.3604  39.9270 0005217 332.6401 262.7957  1.00272463 19080
SeaSat 1
1 10967U 78064A   96170.19854388 -.00000002  00000-0  43669-4 0  4942
2 10967 107.9930 176.8428 0001398 286.5629  73.5358 14.38109417941596
GPS BI-03
1 11054U 78093A   96167.42389787 -.00000019  00000-0  10000-3 0  4119
2 11054  62.8504 260.1863 0046690 179.8076 180.2427  1.93505215128621
Nimbus 7
1 11080U 78098A   96173.18289237 -.00000051  00000-0 -87073-5 0  5958
2 11080  98.9435  35.2328 0008850 321.4713  38.5809 13.83692877891729
GPS BI-04
1 11141U 78112A   96170.88787481 -.00000055  00000-0  10000-3 0   492
2 11141  65.0046  26.2716 0050138  28.5802 331.7582  1.92894661 17910
GPS BI-05
1 11690U 80011A   96162.86642355 -.00000062  00000-0  10000-3 0   321
2 11690  65.3145  25.5414 0144600 189.7207 170.0614  2.00572703134073
GPS BI-06
1 11783U 80032A   96167.38612699 -.00000006  00000-0  10000-3 0  1506
2 11783  62.3087 253.7168 0227143  29.4777 331.8302  2.03456979118796
GOES 5
1 12472U 81049A   96164.76723027  .00000030  00000-0  10000-3 0  9355
2 12472   8.1700  50.2336 0006333  40.6120 319.3048  1.00218814 13053
Cosmos 1383
1 13301U 82066A   96171.44693999  .00000009  00000-0 -64304-5 0  5052
2 13301  82.9325 132.1437 0026092 232.1562 127.7210 13.68075061697683
LandSat 4
1 13367U 82072A   96170.19641422  .00000006  00000-0  11216-4 0  9385
2 13367  98.0734 221.0841 0007355 129.8057 230.3786 14.57179307740681
DMSP B5D2-1
1 13736U 82118A   96170.13863997  .00000033  00000-0  32021-4 0   303
2 13736  98.6247 358.5091 0009799  28.4586 331.7126 14.25789509701209
IRAS
1 13777U 83004A   96173.07931005  .00000032  00000-0  51674-4 0  3515
2 13777  98.9652 358.4928 0013861  88.4976 271.7776 13.99247268353915
Cosmos 1447
1 13916U 83021A   96170.52975899  .00000079  00000-0  66518-4 0  5982
2 13916  82.9455 190.0446 0037932 145.8236 214.5386 13.74342128663922
TDRS 1
1 13969U 83026B   96168.68223973 -.00000301  00000-0  10000-3 0  5992
2 13969   8.9642  43.7036 0002652 338.5196  79.5286  1.00256691 21383
GOES 6
1 14050U 83041A   96170.86397659 -.00000252  00000-0  10000-3 0  5217
2 14050   7.0171  53.6028 0004175  38.6692  48.9317  1.00251837106212
OSCAR 10
1 14129U 83058B   96163.12722915  .00000003  00000-0  10000-3 0  4302
2 14129  26.1723 205.2357 6007420  22.7978 355.4952  2.05880692 69747
LandSat 5
1 14780U 84021A   96173.20303365  .00000033  00000-0  17645-4 0  4812
2 14780  98.3279 231.0152 0001772 297.0171  63.0846 14.57055592654519
UoSat 2
1 14781U 84021B   96172.94610299  .00000032  00000-0  13234-4 0  8925
2 14781  97.8001 163.5013 0012870  78.7111 281.5543 14.69459550658207
GPS BI-09
1 15039U 84059A   96170.81284232 -.00000058  00000-0  10000-3 0  4181
2 15039  64.6481  20.5945 0082931  19.0710 341.2914  1.92301991 87469
Cosmos 1574
1 15055U 84062A   96172.23836523  .00000073  00000-0  62363-4 0  7995
2 15055  82.9555 243.6823 0027857 336.7093  23.2794 13.73636332601405
GPS BI-10
1 15271U 84097A   96168.45528970 -.00000002  00000-0  10000-3 0  1690
2 15271  62.0106 254.2769 0153789 358.2442   1.8077  2.00613544 85257
Cosmos 1602
1 15331U 84105A   96171.34279552  .00000169  00000-0  17108-4 0  4826
2 15331  82.5334 111.0155 0019049 305.4986  54.4458 14.84759583633299
NOAA 9
1 15427U 84123A   96172.81818171  .00000006  00000-0  26767-4 0  7409
2 15427  98.9467 237.7452 0014450 306.9699  53.0147 14.13786722594144
GPS BI-11
1 16129U 85093A   96172.46155421  .00001459  00000-0  10000-3 0  7303
2 16129  65.3192  24.2792 0158418  84.4011 277.4371  1.89384755 21989
Mir
1 16609U 86017A   96172.80243127  .00000283  00000-0  10284-4 0  5589
2 16609  51.6486 105.6503 0005426  97.2361 262.9116 15.58206144590567
SPOT 1
1 16613U 86019A   96171.26057569  .00000089  00000-0  62356-4 0  9493
2 16613  98.7287 239.5023 0001398 353.5778   6.5380 14.20020795220605
Cosmos 1766
1 16881U 86055A   96173.03478324  .00000136  00000-0  13551-4 0  3976
2 16881  82.5190 167.1441 0018884 330.1764  29.8372 14.83740020534415
EGP
1 16908U 86061A   96170.53805351 -.00000083  00000-0  10000-3 0   940
2 16908  50.0101 352.8494 0011450  17.1452 342.9768 12.44414312116574
NOAA 10
1 16969U 86073A   96172.85129916  .00000043  00000-0  36700-4 0  6670
2 16969  98.5229 169.8124 0013619 348.9458  11.1418 14.24989192507120
MOS-1
1 17527U 87018A   96172.22744963 -.00000043  00000-0  00000+0 0  4259
2 17527  98.9360 234.1593 0020028 320.3107  39.6588 14.00394798475419
GOES 7
1 17561U 87022A   96157.45277443 -.00000180  00000-0  10000-3 0  9278
2 17561   3.0382  69.5670 0005652   4.5241 248.2095  1.00356380 17188
Kvant-1
1 17845U 87030A   96171.84049456  .00005911  00000-0  83256-4 0  6606
2 17845  51.6485 110.4785 0005195  96.0382 264.4968 15.58209321524534
DMSP B5D2-3
1 18123U 87053A   96172.48769176  .00000023  00000-0  34205-4 0  4832
2 18123  98.7696   2.7327 0013175 246.0685 113.9113 14.15445198464961
RS-10/11
1 18129U 87054A   96169.92561567  .00000042  00000-0  29675-4 0  2304
2 18129  82.9253 147.9929 0011873 145.0158 215.1774 13.72366777450271
Meteor 2-16
1 18312U 87068A   96171.56136148  .00000057  00000-0  37686-4 0  4881
2 18312  82.5545 350.1996 0010927 210.9418 149.1089 13.84079943446502
Meteor 2-17
1 18820U 88005A   96172.72631991  .00000048  00000-0  29924-4 0  9670
2 18820  82.5424  44.2956 0015353 280.1819  79.7579 13.84758350424011
DMSP B5D2-4
1 18822U 88006A   96172.55997794  .00000008  00000-0  21878-4 0  2815
2 18822  98.3835   4.4604 0006493   4.4354 355.6873 14.23193155435057
Glonass 34
1 19163U 88043A   96168.11867427 -.00000037  00000-0  10000-3 0   872
2 19163  65.2614  85.8737 0008330 156.5206 203.5240  2.13102183 62211
Glonass 36
1 19165U 88043C   96168.64491195 -.00000032  00000-0  10000-3 0  4944
2 19165  65.2359  85.8207 0002885 343.5851  16.4156  2.13101882 62845
METEOSAT 3
1 19215U 88051A   96171.62545781 -.00000094  00000-0  10000-3 0  2656
2 19215   3.2739  67.6877 0002117 119.9803 239.7001  0.96947637 17200
AO-13
1 19216U 88051B   96172.99946836  .00002271  00000-0  57709-3 0  2233
2 19216  57.2295 109.5685 7428118  42.7100 355.2438  2.09849114 29920
OKEAN 1
1 19274U 88056A   96169.32314192  .00000124  00000-0  12386-4 0   976
2 19274  82.5133 271.4629 0020955 119.4352 240.8948 14.82488133429398
Meteor 3-2
1 19336U 88064A   96170.07496679  .00000051  00000-0  10000-3 0  4893
2 19336  82.5390 165.7970 0015562 233.0809 126.8886 13.16977919379595
Glonass 39
1 19503U 88085C   96168.67479955 -.00000066  00000-0  10000-3 0  3822
2 19503  65.5679 324.7414 0005140 149.6629 210.3546  2.13101672 60336
NOAA 11
1 19531U 88089A   96172.77336582 -.00000013  00000-0  18285-4 0  5548
2 19531  99.1858 190.9829 0010736 230.5642 129.4579 14.13095197398959
TDRS 2
1 19548U 88091B   96172.75359100 -.00000188  00000-0  10000-3 0  2151
2 19548   2.4867  72.2564 0005038  94.1907  98.8497  1.00280312 15567
Glonass 40
1 19749U 89001A   96169.18159617 -.00000027  00000-0  10000-3 0  6033
2 19749  65.2065  85.3573 0007581 260.7182  99.2098  2.13101588 57855
Glonass 41
1 19750U 89001B   96172.52146144  .00000344  00000-0  10000-3 0  5083
2 19750  65.2424  85.3208 0008226 263.6211  96.3218  2.13106325 57949
GPS BII-01
1 19802U 89013A   96172.13257588  .00000003  00000-0  10000-3 0  2490
2 19802  55.3371 110.5194 0020465 175.4773 184.5317  2.00577496 53779
Akebono
1 19822U 89016A   96172.86668731  .00007341  00000-0  42388-3 0  7403
2 19822  75.0700 121.7972 3742201 103.5599 300.1076  7.91843728166989
Meteor 2-18
1 19851U 89018A   96172.89377133  .00000020  00000-0  46752-5 0  4868
2 19851  82.5203 278.1173 0014097 331.7438  28.2946 13.84412379369343
MOP-1
1 19876U 89020B   96172.57136188 -.00000122  00000-0  10000-3 0  2010
2 19876   1.9943  71.1697 0020157 286.4400  72.7574  0.97110273  6658
TDRS 3
1 19883U 89021B   96172.10252358 -.00000266  00000-0  10000-3 0  2228
2 19883   0.0340 241.9424 0001411 268.0947 114.4550  1.00270337199144
GPS BII-02
1 20061U 89044A   96172.47690477 -.00000050  00000-0  10000-3 0  2299
2 20061  54.1934 286.2627 0157004 219.3618 139.5270  2.00561816 51526
Nadezhda 1
1 20103U 89050A   96172.85291166  .00000036  00000-0  21435-4 0  8101
2 20103  82.9601 105.9793 0039450  43.8147 316.6126 13.73866890349187
GPS BII-03
1 20185U 89064A   96172.32399631  .00000005  00000-0  10000-3 0  2761
2 20185  55.1376 110.9799 0021898 327.9996  31.8501  2.00547487 50093
GMS 4
1 20217U 89070A   96172.70896956 -.00000366  00000-0  10000-3 0  3939
2 20217   1.8026  75.0363 0001425 179.0141  30.5226  1.00278357 25457
INTERCOSMOS 24
1 20261U 89080A   96171.25199579 -.00000050  00000-0 -23201-4 0  5060
2 20261  82.5933 269.4012 1242404  37.0004 331.0552 12.47340368306161
GPS BII-04
1 20302U 89085A   96170.35718771  .00000019  00000-0  10000-3 0  2413
2 20302  53.2533 226.1752 0024126 189.1483 170.9051  2.00566077 48855
Meteor 3-3
1 20305U 89086A   96172.88674117  .00000044  00000-0  10000-3 0  5840
2 20305  82.5526 122.0372 0006061 312.6026  47.4485 13.04436918318687
COBE
1 20322U 89089A   96172.08712924 -.00000119  00000-0 -48264-4 0  2210
2 20322  98.9452 187.2888 0009632  31.8786 328.2960 14.03460475337336
Kvant-2
1 20335U 89093A   96171.84049456  .00005911  00000-0  83256-4 0  6155
2 20335  51.6485 110.4785 0005195  96.0382 264.4968 15.58209321373545
GPS BII-05
1 20361U 89097A   96170.36971352 -.00000061  00000-0  10000-3 0   885
2 20361  56.0103  53.2304 0076747 136.5400 224.1135  2.00565145 38339
COSMOS 2054 (Altair-1)
1 20391U 89101A   96172.57937087 -.00000133  00000-0  00000+0 0  3716
2 20391   3.8557  63.4042 0003893  44.6422 353.5613  1.00272099 24034
SPOT 2
1 20436U 90005A   96170.90131822 -.00000044  00000-0  00000+0 0   841
2 20436  98.6982 244.5327 0001168  58.0345 302.0945 14.20040355332080
UO-14
1 20437U 90005B   96170.79923454 -.00000051  00000-0 -31749-5 0  1906
2 20437  98.5438 253.7843 0010661 194.0978 165.9907 14.29922808334281
UO-15
1 20438U 90005C   96170.24381092 -.00000044  00000-0 -44649-6 0  9862
2 20438  98.5384 251.1780 0009198 202.9249 157.1521 14.29232001334078
PACSAT
1 20439U 90005D   96169.28757416 -.00000042  00000-0  45879-6 0  9887
2 20439  98.5559 254.5191 0010523 201.1820 158.8927 14.29977019334080
DO-17
1 20440U 90005E   96169.23984252 -.00000026  00000-0  66330-5 0  9880
2 20440  98.5605 255.1133 0010454 199.9800 160.0973 14.30119167334105
WO-18
1 20441U 90005F   96171.25869992 -.00000042  00000-0  58260-6 0  9937
2 20441  98.5604 257.0398 0011325 194.3923 165.6936 14.30088706334397
LO-19
1 20442U 90005G   96169.22550183  .00000000  00000-0  16880-4 0  9888
2 20442  98.5624 255.5339 0011549 199.7762 160.2974 14.30197428334122
GPS BII-06
1 20452U 90008A   96171.26422609  .00000044  00000-0  10000-3 0  1809
2 20452  54.0363 166.6794 0062447  91.1889 269.5275  2.00569790 46851
MOS-1B
1 20478U 90013A   96173.22187529  .00000088  00000-0  10000-3 0  9479
2 20478  99.1279 242.6526 0004621 243.0987 116.9701 13.93963607245118
DEBUT
1 20479U 90013B   96172.07773662 -.00000017  00000-0  25535-4 0  9889
2 20479  99.0243 196.5901 0540789 117.3507 248.3692 12.83342115298271
FO-20
1 20480U 90013C   96170.55482714 -.00000051  00000-0 -50035-4 0  8855
2 20480  99.0261 195.1536 0541042 121.3738 244.1471 12.83233276298069
MOS-1B R/B
1 20491U 90013D   96173.20956016 -.00000211  00000-0 -32720-3 0  2530
2 20491  99.0760 262.4530 0469703 285.1608  69.8010 13.02992060302382
LACE
1 20496U 90015A   96169.87887338  .00000393  00000-0  19348-4 0  6596
2 20496  43.1016 199.4212 0009517  52.4515 307.7206 15.35672079353933
Nadezhda 2
1 20508U 90017A   96172.84049916  .00000052  00000-0  39181-4 0  8114
2 20508  82.9547 240.4767 0045740 357.3913   2.6997 13.73508937316394
OKEAN 2
1 20510U 90018A   96172.76346788  .00000171  00000-0  20176-4 0  5063
2 20510  82.5244 222.4888 0018132 312.0907  47.8757 14.78607194340200
GPS BII-07
1 20533U 90025A   96172.66595381 -.00000050  00000-0  00000+0 0  2254
2 20533  54.5882 286.9792 0051524  78.1850 282.3955  2.00566250 45656
PegSat
1 20546U 90028A   96170.53636903  .00002989  00000-0  55139-4 0  9393
2 20546  94.1084 353.1396 0060155   2.5312 357.6227 15.47319461345213
HST
1 20580U 90037B   96170.59184162  .00000297  00000-0  14114-4 0  8153
2 20580  28.4691 209.5221 0006098 185.8941 174.1576 14.91066493138799
MACSAT 2
1 20608U 90043B   96172.97249508  .00000058  00000-0  69177-5 0  1902
2 20608  89.9240 173.3648 0108411  43.3659 317.6030 14.64924621326849
Glonass 44
1 20619U 90045A   96172.36500818 -.00000042  00000-0  10000-3 0  3043
2 20619  65.1863 323.8464 0025515 209.0463 150.8337  2.13102609 47373
Glonass 45
1 20620U 90045B   96172.48368751 -.00000042  00000-0  10000-3 0  2933
2 20620  65.1838 323.8348 0008593  48.1788 311.8891  2.13102552 47413
Glonass 46
1 20621U 90045C   96172.55122684 -.00000041  00000-0  10000-3 0  8884
2 20621  65.2197 323.8938 0005281 169.4035 190.5888  2.13102295 47413
Kristall
1 20635U 90048A   96171.84049456  .00005911  00000-0  83256-4 0  4079
2 20635  51.6485 110.4785 0005195  96.0382 264.4968 15.58209321344377
ROSAT
1 20638U 90049A   96172.75253151 -.00000109  00000-0  11831-4 0  5709
2 20638  52.9891 283.0070 0014213 136.6687 223.5422 15.07419326332852
Meteor 2-19
1 20670U 90057A   96172.88045712 -.00000003  00000-0 -15540-4 0    36
2 20670  82.5439 344.9344 0014281 246.7888 113.1771 13.84129738302257
CRRES
1 20712U 90065A   96172.49837179  .00000003  00000-0  20299-5 0  2730
2 20712  17.9291 250.4327 7203146  19.1979 357.8244  2.35693342 43192
GPS BII-08
1 20724U 90068A   96172.98696658  .00000004  00000-0  10000-3 0   641
2 20724  54.9823 108.5030 0129712 182.3317 177.7953  2.00565749 41521
Feng Yun1-2
1 20788U 90081A   96172.88039977  .00000216  00000-0  17090-3 0  9516
2 20788  98.8061 178.2126 0016589 120.4846 239.7957 14.01369378296618
Meteor 2-20
1 20826U 90086A   96169.41874246  .00000032  00000-0  15411-4 0  9977
2 20826  82.5244 284.1369 0013445 152.3884 207.7993 13.83631861288876
GPS BII-09
1 20830U 90088A   96171.04739146 -.00000062  00000-0  10000-3 0   439
2 20830  55.9546  51.1370 0067569  95.2708 265.5591  2.00564806 42123
GPS BIIA-10
1 20959U 90103A   96171.94350816  .00000002  00000-0  10000-3 0   210
2 20959  55.1600 110.6206 0109771 235.2131 123.7304  2.00563165 40734
DMSP B5D2-5
1 20978U 90105A   96172.80011579  .00000122  00000-0  58858-4 0  6638
2 20978  98.5975 243.9019 0078857 159.0482 201.3958 14.32659148290230
Glonass 47
1 21006U 90110A   96169.75933461 -.00000023  00000-0  10000-3 0  8606
2 21006  65.1924  84.6794 0057402 190.3346 169.5652  2.13102625 43025
Glonass 48
1 21007U 90110B   96168.07346292 -.00000038  00000-0  10000-3 0  9956
2 21007  65.2033  84.8215 0035144 179.0687 180.9446  2.13101108 42975
Glonass 49
1 21008U 90110C   96172.66077690 -.00000013  00000-0  00000+0 0  2434
2 21008  65.1958  84.6024 0009743 274.7420  85.1778  2.13098647 43069
AO-21
1 21087U 91006A   96170.46475840  .00000094  00000-0  82657-4 0  7145
2 21087  82.9372 320.7629 0033673 201.0650 158.9121 13.74569120270189
RS-12/13
1 21089U 91007A   96172.68143441  .00000063  00000-0  51460-4 0  8979
2 21089  82.9227 186.7489 0027740 222.6025 137.2979 13.74071420269514
MOP-2
1 21140U 91015B   96172.50928344 -.00000006  00000-0  00000+0 0  2140
2 21140   0.5490  76.0205 0000884  14.9774   1.3488  1.00277055 21644
Nadezhda 3
1 21152U 91019A   96172.87655252  .00000066  00000-0  55072-4 0  5009
2 21152  82.9235 143.0588 0042525 334.7427  25.1649 13.73534708264256
Glonass 50
1 21216U 91025A   96169.30876180 -.00000064  00000-0  10000-3 0  5130
2 21216  64.9206 323.4938 0006401 186.4265 173.5515  2.13103335 40525
Glonass 51
1 21217U 91025B   96169.37976486 -.00000064  00000-0  10000-3 0  9154
2 21217  64.9246 323.4885 0010161 226.9186 132.9811  2.13101569 40515
Glonass 52
1 21218U 91025C   96166.67467256 -.00000073  00000-0  10000-3 0  3935
2 21218  64.9253 323.5662 0011603 348.3414  11.6420  2.13102483 40462
GRO
1 21225U 91027B   96173.25604081  .00001098  00000-0  17681-4 0  3666
2 21225  28.4589 156.2295 0002635 253.8451 106.1854 15.44058353170566
Meteor 3-4
1 21232U 91030A   96172.94687689  .00000051  00000-0  10000-3 0  8994
2 21232  82.5402  10.1369 0013895 146.9786 213.2204 13.16472711248034
NOAA 12
1 21263U 91032A   96172.79603373  .00000123  00000-0  74280-4 0  9780
2 21263  98.5581 191.8012 0011817 266.8507  93.1321 14.22631065264973
OKEAN 3
1 21397U 91039A   96170.40076408  .00000076  00000-0  76367-5 0  1962
2 21397  82.5240 138.9440 0024233  34.7181 325.5606 14.76483385271547
GPS BIIA-11
1 21552U 91047A   96172.71594122 -.00000062  00000-0  10000-6 0  9842
2 21552  56.2369  48.8857 0070624 247.8976 111.4079  2.00565785 36347
ERS-1
1 21574U 91050A   96172.26262739  .00000028  00000-0  26708-4 0  2974
2 21574  98.5472 246.2912 0001992  20.3179 339.8082 14.32249144257882
UO-22
1 21575U 91050B   96173.22806102  .00000024  00000-0  22408-4 0  6951
2 21575  98.3499 239.4932 0006771 256.7045 103.3385 14.37027447258643
ORBCOMM-X
1 21576U 91050C   96169.21836051  .00000012  00000-0  18378-4 0  7894
2 21576  98.3464 233.5520 0003161 288.3438  71.7402 14.36441117257955
TUBSAT-A
1 21577U 91050D   96170.72424904  .00000017  00000-0  20059-4 0  6896
2 21577  98.3450 235.6053 0005982 276.2441  83.8064 14.36519662258206
SARA
1 21578U 91050E   96171.25627900  .00000123  00000-0  53528-4 0  8906
2 21578  98.3793 244.1666 0003858 260.4892  99.5860 14.39204499258634
TDRS 4
1 21639U 91054B   96168.57557262  .00000077  00000-0  00000+0 0   443
2 21639   0.0543 137.6868 0002844 311.7460 208.4976  1.00269974 17859
Meteor 3-5
1 21655U 91056A   96170.49923147  .00000051  00000-0  10000-3 0  8968
2 21655  82.5501 319.5317 0013312 163.5089 196.6464 13.16847809232845
UARS
1 21701U 91063B   96170.88464852 -.00000242  00000-0 -97962-7 0  7693
2 21701  56.9853 103.1818 0005016 107.6566 252.5004 14.96518451260611
DMSP B5D2-6
1 21798U 91082A   96172.78352011  .00000115  00000-0  84416-4 0  3290
2 21798  98.9472 190.0973 0011837 216.0916 143.9460 14.13973144235433
Glonass 53
1 21853U 92005A   96171.10975687 -.00000016  00000-0  10000-3 0  1008
2 21853  65.1329  84.3050 0007096 212.6371 147.3448  2.13102282 34167
Glonass 54
1 21854U 92005B   96172.33506711 -.00000094  00000-0  10000-3 0  3045
2 21854  65.1655  84.2492 0017907  19.7397 340.3660  2.13102950 34179
Glonass 55
1 21855U 92005C   96170.99454355 -.00000016  00000-0  00000+0 0  2916
2 21855  65.1422  84.2919 0006443 206.6884 153.3021  2.13102641 34133
JERS-1
1 21867U 92007A   96172.73890541  .00000112  00000-0  14130-4 0  8989
2 21867  97.6874 249.9739 0001609 114.2194 245.9192 14.98654352238392
GPS BIIA-12
1 21890U 92009A   96172.68021670  .00000038  00000-0  10000-3 0  8157
2 21890  53.8108 226.5285 0057991 197.3497 162.4845  2.00575193 31712
GPS BIIA-13
1 21930U 92019A   96172.35368837  .00000005  00000-0  10000-3 0  7700
2 21930  55.6714 348.5316 0029328 180.3662 179.6655  2.00630719 30634
EUVE
1 21987U 92031A   96172.37207421  .00000659  00000-0  20608-4 0  5506
2 21987  28.4312 161.5669 0009713  90.8690 269.3018 15.19805667224167
SAMPEX
1 22012U 92038A   96171.21457642  .00000188  00000-0  13942-4 0  7251
2 22012  81.6715 117.1372 0117618 164.2065 196.2876 14.91666415215535
GPS BIIA-14
1 22014U 92039A   96169.93828255  .00000039  00000-0  00000+0 0  7297
2 22014  54.8496 168.5502 0110149 328.6711  30.6494  2.00578774 22424
Glonass 56
1 22056U 92047A   96172.30069444 -.00000044  00000-0  00000+0 0  2139
2 22056  64.7616 323.4268 0003498 271.9905  88.1783  2.13105071 30257
Glonass 57
1 22057U 92047B   96172.59686095 -.00000033  00000-0  10000-3 0  1882
2 22057  64.7796 323.4130 0005011 334.7126  25.2993  2.13102103 30248
Glonass 58
1 22058U 92047C   96166.43589598 -.00000073  00000-0  10000-3 0  1153
2 22058  64.7781 323.6697 0009280 277.4251  82.4591  2.13102902 30153
TOPEX
1 22076U 92052A   96172.18736872 -.00000038  00000-0  10000-3 0  9718
2 22076  66.0397 206.4323 0008100 268.3413  91.6673 12.80930351180504
KO-23
1 22077U 92052B   96172.12842036 -.00000037  00000-0  10000-3 0  5853
2 22077  66.0774 183.2996 0013491 299.0540  60.9122 12.86297496181188
S80/T
1 22078U 92052C   96170.10918973 -.00000037  00000-0  10000-3 0  5821
2 22078  66.0786 186.0295 0014645 298.5857  61.3687 12.86580599181014
GPS BIIA-15
1 22108U 92058A   96168.40379298  .00000027  00000-0  10000-3 0  7428
2 22108  54.0254 227.5588 0120112 160.2424 199.7121  2.00558132 27575
FREJA
1 22161U 92064A   96170.67706132 -.00000293  00000-0 -59377-4 0  6222
2 22161  62.9832 237.2684 0841812  18.0484 344.8581 13.21899967178627
LAGEOS II
1 22195U 92070B   96172.59518692 -.00000009  00000-0  10000-3 0  4985
2 22195  52.6747 349.5043 0137675  78.3374 283.2605  6.47293579 86496
GPS BIIA-16
1 22231U 92079A   96173.07430104  .00000065  00000-0  10000-4 0  7457
2 22231  54.6782 169.5733 0039222 279.0794  80.4809  2.00571189 26240
GPS BIIA-17
1 22275U 92089A   96171.21030021  .00000045  00000-0  10000-3 0  7473
2 22275  54.6323 167.1387 0050584 249.5906 109.8172  2.00583317 25614
TDRS 5
1 22314U 93003B   96169.81072304 -.00000288  00000-0  10000-3 0  6386
2 22314   2.6180  69.9799 0003144   3.6262  77.5169  1.00256028 12597
GPS BIIA-18
1 22446U 93007A   96171.29531863 -.00000052  00000-0  10000-3 0  7257
2 22446  54.2105 287.1605 0090206  14.9049 345.3195  2.00551466 24601
Glonass 59
1 22512U 93010A   96168.76540891 -.00000032  00000-0  10000-3 0  8039
2 22512  65.1568  84.2402 0008661 182.8840 177.1251  2.13101949 25682
Glonass 60
1 22513U 93010B   96171.05002180 -.00000016  00000-0  00000+0 0  9296
2 22513  65.1473  84.1582 0005377 197.9171 162.0894  2.13102731 25924
Glonass 61
1 22514U 93010C   96173.22084804 -.00000014  00000-0  00000+0 0  9233
2 22514  65.1694  84.0916 0009158 187.5573 172.4615  2.13101930 25973
ASTRO-D
1 22521U 93011A   96171.86788198  .00000517  00000-0  29761-4 0  5027
2 22521  31.1045  48.0205 0055766 194.6603 165.2414 15.02936880182876
UFO F1
1 22563U 93015A   96171.81851836  .00000000  00000-0  10000-3 0  5068
2 22563  25.3761 288.6584 0063907 183.8809 176.0813  0.99252184 16134
GPS BIIA-19
1 22581U 93017A   96171.93542912 -.00000077  00000-0  10000-3 0  5464
2 22581  55.2144 347.9162 0068613  38.8633 321.6067  2.00559375 23677
ARSENE
1 22654U 93031B   96166.91447192 -.00000141  00000-0  10000-3 0  3669
2 22654   3.2208  73.3495 2870936 238.4255  89.9013  1.42202973 11564
GPS BIIA-20
1 22657U 93032A   96172.57093201 -.00000073  00000-0  10000-3 0  6612
2 22657  55.2351 347.7588 0072482 214.8768 144.6530  2.00572564 19011
RADCAL
1 22698U 93041A   96173.25005419  .00000031  00000-0  84115-5 0  4977
2 22698  89.5427 271.1817 0090948 314.6993  44.6819 14.21373559155009
GPS BIIA-21
1 22700U 93042A   96173.03193587  .00000016  00000-0  10000-3 0  5639
2 22700  54.1934 228.1625 0048164 358.7206   1.3516  2.00557068 21821
NOAA 13
1 22739U 93050A   96172.88898932 -.00000097  00000-0 -28851-4 0   896
2 22739  99.0437 128.1488 0009648 210.2624 149.7977 14.10964843147571
GPS BIIA-22
1 22779U 93054A   96172.12419494 -.00000051  00000-0  10000-3 0  6210
2 22779  54.3555 287.1797 0016086 263.1528  96.7288  2.00573415 20565
Meteor 2-21
1 22782U 93055A   96169.99827641  .00000050  00000-0  32204-4 0  4917
2 22782  82.5466 346.4972 0022245 339.5146  20.5113 13.83056078141240
UFO F2
1 22787U 93056A   96170.99347222 -.00000065  00000-0  00000+0 0  6493
2 22787   4.1192 327.2859 0003374  83.0020 286.6533  1.00266790  8856
SPOT 3
1 22823U 93061A   96171.57631387 -.00000044  00000-0  00000+0 0  5589
2 22823  98.6996 245.2781 0001433  77.0983 283.0354 14.20041338141579
STELLA
1 22824U 93061B   96169.24798038 -.00000052  00000-0 -37321-5 0  4781
2 22824  98.5794 244.2053 0005597 231.1767 128.8914 14.27104702141945
AO-27
1 22825U 93061C   96169.77725608 -.00000055  00000-0 -48921-5 0  4818
2 22825  98.5805 245.3148 0007873 228.2021 131.8441 14.27697011142079
IO-26
1 22826U 93061D   96167.74127818 -.00000007  00000-0  14714-4 0  4798
2 22826  98.5787 243.4808 0008339 234.9298 125.1100 14.27805941141798
HEATHSAT
1 22827U 93061E   96169.27084460  .00000021  00000-0  25799-4 0  5414
2 22827  98.5791 244.8874 0008183 220.6873 139.3695 14.27940417142021
ITAMSAT
1 22828U 93061F   96169.26409645 -.00000008  00000-0  14245-4 0  4587
2 22828  98.5771 245.0363 0009286 215.7528 144.3031 14.28143695110123
PO-28
1 22829U 93061G   96172.22333608  .00000000  00000-0  17541-4 0  4733
2 22829  98.5780 248.0023 0009346 206.1215 153.9492 14.28124641142463
KO-25
1 22830U 93061H   96169.55280118 -.00000023  00000-0  78482-5 0  4912
2 22830  98.4650 234.2308 0011285 185.4827 174.6229 14.28110256142089
GPS BIIA-23
1 22877U 93068A   96172.67460615 -.00000063  00000-0  10000-3 0  4339
2 22877  55.6496  49.0195 0041412 306.2685  53.4032  2.00576859 19462
METEOSAT 6
1 22912U 93073B   96172.09498843 -.00000087  00000-0  10000-3 0  4858
2 22912   0.1161 330.8968 0000337  78.7521 242.7943  1.00272225  7882
HST Array
1 22920U 90037C   96173.22896574  .00002969  00000-0  19383-3 0  4788
2 22920  28.4680 108.3736 0004260 166.4666 193.6045 15.04694636140030
Meteor 3-6
1 22969U 94003A   96173.24822346  .00000051  00000-0  10000-3 0  2635
2 22969  82.5625 257.6277 0014695 228.6440 131.3423 13.16735906115583
TUBSAT-B
1 22970U 94003B   96173.26006802  .00000051  00000-0  10000-3 0  2540
2 22970  82.5562 257.5110 0014737 225.9893 134.0018 13.16827765115595
GPS BIIA-24
1 23027U 94016A   96168.76188620 -.00000090  00000-0  10000-3 0  3709
2 23027  55.0784 349.8746 0063359 198.9084 160.8749  2.00554770 16698
Glonass 62
1 23043U 94021A   96172.35985110 -.00000044  00000-0  00000+0 0  3683
2 23043  64.6504 323.7897 0005924 177.7863 182.2106  2.13103044 17070
Glonass 63
1 23044U 94021B   96169.89604851 -.00000061  00000-0  00000+0 0  3341
2 23044  64.6460 323.8649 0029654 201.4590 158.4053  2.13102892 17027
Glonass 64
1 23045U 94021C   96170.54247591 -.00000056  00000-0  00000+0 0  3423
2 23045  64.6353 323.8609 0011661  33.5660 326.4969  2.13102157 17034
GOES 8
1 23051U 94022A   96171.28671003 -.00000255  00000-0  10000-3 0  5419
2 23051   0.0219  75.0364 0004501  65.9073 155.4967  1.00269978 15386
MSTI 2
1 23101U 94028A   96167.61244025  .00002895  00000-0  46261-4 0  3253
2 23101  97.0838   1.1285 0010967 336.9889  23.0866 15.53948957119057
STRV-1A
1 23125U 94034B   96172.71575110  .00001997  00000-0  40902-3 0  2903
2 23125   7.0510 238.0685 7256716  64.0072 351.4980  2.32067384 16207
STRV-1B
1 23126U 94034C   96173.22997120  .00003552  00000-0  62132-3 0  2582
2 23126   7.0524 238.0239 7259287  64.1727 351.4634  2.32011468 16255
Nadezhda 4
1 23179U 94041A   96173.25917667  .00000047  00000-0  31940-4 0  1982
2 23179  82.9458 233.5734 0037574 110.4017 250.1180 13.75681711 97358
Glonass 65
1 23203U 94050A   96170.21084242  .00000055  00000-0  00000+0 0  2996
2 23203  64.7727 204.0810 0006783 162.3403 197.7579  2.13102178 14424
Glonass 66
1 23204U 94050B   96172.32157064  .00000100  00000-0  10000-3 0  3249
2 23204  64.7478 204.0479 0015515 341.5877  18.3926  2.13104386 14469
Glonass 67
1 23205U 94050C   96172.20420260  .00000055  00000-0  00000+0 0  3006
2 23205  64.7646 204.0301 0003233 281.6373  78.3928  2.13102602 14467
DMSP B5D2-7
1 23233U 94057A   96172.69243229  .00000120  00000-0  87970-4 0  8199
2 23233  98.8257 231.4109 0012308 166.1448 194.0061 14.12714543 93328
OKEAN 1-7
1 23317U 94066A   96170.73223842  .00000208  00000-0  28071-4 0  1618
2 23317  82.5445  57.6143 0027742  74.9562 285.4714 14.74024397 90761
ELEKTRO
1 23327U 94069A   96172.86705468 -.00000101  00000-0  00000+0 0  1673
2 23327   0.1047 176.4140 0006842 279.7424 201.6141  1.00271445  6037
RESURS 1-3
1 23342U 94074A   96171.18946837  .00000065  00000-0  18829-4 0  5054
2 23342  97.9665 228.2027 0001500  62.2345 297.9001 14.69842274 87100
Glonass 68
1 23396U 94076A   96172.98635032 -.00000014  00000-0  00000+0 0  2729
2 23396  65.0788  84.1500 0027983 190.7544 169.2155  2.13102769 12324
Glonass 69
1 23397U 94076B   96172.69305945 -.00000014  00000-0  00000+0 0  2679
2 23397  65.0732  84.1685 0013050 320.4459  39.4943  2.13102303 12311
Glonass 70
1 23398U 94076C   96172.10752033 -.00000014  00000-0  00000+0 0  2838
2 23398  65.0699  84.1611 0003670 299.4402  60.5520  2.13102525 12315
LUCH (Altair-2)
1 23426U 94082A   96171.73833391  .00000000  00000-0  10000-3 0  3360
2 23426   1.4470 268.9182 0001650 182.8992 177.1036  1.00281997  5559
RS-15
1 23439U 94085A   96172.02555377 -.00000039  00000-0  10000-3 0  1412
2 23439  64.8201  18.4960 0161207 198.6386 160.8592 11.27526125 61101
NOAA 14
1 23455U 94089A   96172.82847599 -.00000006  00000-0  21167-4 0  6452
2 23455  98.9434 118.2933 0008396 231.3296 128.7136 14.11593507 75968
Glonass 71
1 23511U 95009A   96172.53584955 -.00000043  00000-0  00000+0 0  1971
2 23511  64.6637 324.0554 0005802 206.0222 153.9438  2.13103521 10044
Glonass 72
1 23512U 95009B   96171.24693592 -.00000051  00000-0  00000+0 0  2135
2 23512  64.6619 324.1043 0005060 330.2990  29.6624  2.13101921 10012
Glonass 73
1 23513U 95009C   96172.00846610 -.00000046  00000-0  00000+0 0  2237
2 23513  64.6750 324.0904 0012800 196.0374 163.9146  2.13102789 10034
GMS 5
1 23522U 95011B   96162.31032554 -.00000314  00000-0  10000-3 0  1239
2 23522   0.3531 331.1253 0004101 235.7273 301.8182  1.00249550  4385
DMSP B5D2-8
1 23533U 95015A   96172.62336393 -.00000006  00000-0  20314-4 0  5599
2 23533  98.8375 175.0407 0008470  49.5175 310.6733 14.12742361 64118
Microlab 1
1 23547U 95017C   96170.47522249  .00000232  00000-0  82599-4 0  1144
2 23547  69.9783 167.0795 0013730 186.9631 173.1310 14.45542484 63857
OFEQ 3
1 23549U 95018A   96172.32795518  .00015721  00000-0  39655-3 0  2654
2 23549 143.3665 247.1965 0222892 165.0235 195.7215 15.15806651 66846
GFZ-1
1 23558U 86017JE  96172.92944268  .00001667  00000-0  24503-4 0  1354
2 23558  51.6511  94.4940 0005231 234.6106 125.4401 15.62239086590594
ERS-2
1 23560U 95021A   96172.77360925  .00000016  00000-0  58062-5 0  2443
2 23560  98.5440 246.7948 0000457 149.1861 210.9911 14.32246242 61082
Spektr
1 23579U 95024A   96171.84049456  .00005911  00000-0  83256-4 0  3673
2 23579  51.6485 110.4785 0005195  96.0382 264.4968 15.58209321 61856
GOES 9
1 23581U 95025A   96167.40430022  .00000077  00000-0  00000+0 0  2046
2 23581   0.2011  82.4729 0000778 279.4890 272.5312  1.00281681  3909
Helios 1A
1 23605U 95033A   96172.69911649  .00000040  00000-0  16593-4 0  2339
2 23605  98.1217 108.3550 0001306  66.5879 293.5477 14.63844603 51078
UPM SAT 1
1 23606U 95033B   96172.86366338  .00000085  00000-0  23717-4 0  1770
2 23606  98.1017 109.5836 0007393 163.7545 196.3897 14.67254017 51253
CERISE
1 23607U 95033C   96169.24588739  .00000058  00000-0  18898-4 0   964
2 23607  98.1036 105.8827 0005599 174.4451 185.6817 14.66946705 50742
TDRS 6
1 23613U 95035B   96164.42597162 -.00000066  00000-0  10000-3 0  1741
2 23613   0.5850  82.5156 0003337 226.6902 277.4964  1.00024421  3337
Glonass 74
1 23620U 95037A   96171.32328135  .00000053  00000-0  00000+0 0  1492
2 23620  64.8288 203.9092 0018424 173.2833 186.8068  2.13102856  7059
Glonass 75
1 23621U 95037B   96170.56199443  .00000054  00000-0  00000+0 0  1510
2 23621  64.8350 203.9307 0018480 183.4916 176.5681  2.13102078  7037
Glonass 76
1 23622U 95037C   96170.15099331  .00000055  00000-0  00000+0 0  1512
2 23622  64.8311 203.9527 0036770 167.8816 192.2802  2.13102530  7028
Prognoz-M2
1 23632U 95039A   96172.29100520 -.00000806  00000-0  00000+0 0   632
2 23632  70.1900 250.0080 8330225 322.1180 316.8460  0.26343000   859
SICH-1
1 23657U 95046A   96172.66259148  .00000127  00000-0  15991-4 0   870
2 23657  82.5343 197.3615 0029541  40.6784 319.6617 14.73478558 43341
RADARSAT
1 23710U 95059A   96171.57852134 -.00000044  00000-0  00000+0 0  1484
2 23710  98.5782 178.2312 0000953  75.6234 284.5054 14.29974703 32584
Glonass 77
1 23734U 95068A   96172.61495017  .00000077  00000-0  10000-3 0  1300
2 23734  64.8133 203.7607 0019202 318.8959  40.9960  2.13104066  4047
Glonass 78
1 23735U 95068B   96170.48140231  .00000054  00000-0  00000+0 0  1219
2 23735  64.8268 203.8447 0008163 223.1057 136.8977  2.13125148  3991
Glonass 79
1 23736U 95068C   96170.50316965  .00000054  00000-0  00000+0 0  1065
2 23736  64.8187 203.8559 0008523 204.9347 155.0968  2.13102226  3990
XTE
1 23757U 95074A   96170.84956494  .00000497  00000-0  12706-4 0   655
2 23757  22.9850  40.4251 0013030  80.8711 279.3243 14.97658405 25714
1996010D
1 23797U 96010D   96171.07607531  .00117146  32581-6  21260-2 0   985
2 23797  48.1257 249.5231 7328183  29.9324 359.0878  2.26985548  2702
Soyuz TM-23
1 23798U 96011A   96171.84049456  .00005911  00000-0  83256-4 0  1031
2 23798  51.6485 110.4785 0005195  96.0382 264.4968 15.58209321 18615
Polar
1 23802U 96013A   96106.86263936  .00000098  00000-0  00000+0 0   222
2 23802  85.9670  26.8051 6631391 289.5093  13.3680  1.36949782   706
1996010E
1 23824U 96010E   96167.25592034  .00000500  00000-0  20757-2 0   678
2 23824  47.7182 252.6659 7261892  27.3684 357.0151  2.21663393  2571
GPS BIIA-25
1 23833U 96019A   96172.88766048 -.00000073  00000-0  10000-3 0   396
2 23833  54.6822 347.9010 0038529 146.0645 214.1983  2.00565103  1758
Priroda
1 23848U 96023A   96171.84049456  .00005911  00000-0  83256-4 0   567
2 23848  51.6485 110.4785 0005195  96.0382 264.4968 15.58209321  8946
MSX
1 23851U 96024A   96171.46801861 -.00000047  00000-0  00000+0 0   361
2 23851  99.3758 150.7539 0006849 154.5437 205.6034 13.97718216  7819
Progress M-31
1 23860U 96028A   96171.84049456  .00005911  00000-0  83256-4 0   487
2 23860  51.6485 110.4785 0005195  96.0382 264.4968 15.58209321  7118
MSTI 3
1 23868U 96031A   96171.56962165 -.00000021  00000-0  13188-5 0   306
2 23868  97.1219   1.9767 0011791 161.0565 199.1125 15.46134440  5196
Galaxy 9
1 23877U 96033A   96172.60127324  .00000022  00000-0  00000+0 0   329
2 23877   0.0401 159.8067 0002006 359.6116 203.0760  1.00273702   302
1996033B
1 23878U 96033B   96169.44108795  .00002213  00000-0  78330-4 0   127
2 23878  25.8294 289.1378 0842734  61.8637 306.4455 13.82139368  3371
1996033C
1 23879U 96033C   96170.67687779 -.00000109  00000-0  00000+0 0   115
2 23879  23.0744  69.5097 6780159   9.6786 358.7126  2.11147754   542
Gorizont 32
1 23880U 96034A   96170.34096713  .00000094  00000-0  00000+0 0   240
2 23880   1.4427 283.6471 0015120 332.0865 186.5204  1.00270195   245
1996034B
1 23881U 96034B   96149.37506907  .12519477  12777-4  84098-4 0   213
2 23881  51.6253 265.1638 0010849 276.2132  83.7707 16.52789070   548
1996034C
1 23882U 96034C   96146.93642506  .15866946  12578-4  59433-3 0    42
2 23882  51.6150 278.9349 0004235 339.3430  27.3955 16.44057387   145
1996034D
1 23883U 96034D   96170.35953665 -.00000020  00000-0  00000+0 0    84
2 23883   1.4696 283.6291 0024307 339.6944  21.1277  0.97946379   236
1996034E
1 23886U 96034E   96172.19154162  .00000690  00000-0  28598-3 0    84
2 23886  47.2838 276.3696 7320730   6.7879 359.1570  2.22651166   583
1996034F
1 23887U 96034F   96166.38748951  .00000120  00000-0  33137-3 0    76
2 23887  47.3599 278.0560 7299951   5.1437 359.3563  2.22247137   450
1983063A
1 23906U 83063E   96171.14375139  .00000545  00000-0  19599-3 0    33
2 23906  82.0251 202.4501 0042348 173.1950 186.9808 14.31844511676811
1996016C
1 23909U 96016C   96163.74233618  .40456583  67558-5  31410-2 0    32
2 23909  67.1294 123.8472 0069255  57.9050 302.6676 16.29168534 14295
1996035A
1 23915U 96035A   96170.43790105 -.00000289  00000-0  00000+0 0   119
2 23915   0.1263 170.7933 0022146  44.4373 155.8318  1.00086079    62
1996035B
1 23916U 96035B   96169.43042824 -.00000133  00000-0  00000+0 0    35
2 23916   1.3619  23.8149 1571082 336.2246 198.8749  1.24514823    51
STS 78
1 23931U 96036A   96173.25000000  .00000778  54141-5  44766-5 0    57
2 23931  39.0156   5.7513 0007759 278.5891 160.5994 16.00552170   116
--
Dr TS Kelso                          Adjunct Professor of Space Operations
[e-mail]                   Air Force Institute of Technology


From [e-mail] Tue Jun 25 20:34:14 1996
From: Francisco Costa <[e-mail]>
Newsgroups: rec.radio.amateur.space
Subject: Re: STS-78 Sarex
Date: 22 Jun 1996 01:28:47 GMT
Message-ID: <4qfi8f$[e-mail]>
References: <4qet68$[e-mail]>
To: [e-mail]

Hi Tom

There are reports saying today (21st June)
around 2100 UTC the "action" start.

GOOD LUCK

73's F.Costa CT1EAT




From [e-mail] Tue Jun 25 20:34:15 1996
From: [e-mail]
Newsgroups: rec.radio.info,rec.radio.amateur.space
Subject: ARLK044 Keplerian data
Date: 22 Jun 1996 15:00:16 -0400
Message-ID: <$[e-mail]>


SB KEP @ ARL $ARLK044
ARLK044 Keplerian data

ZCZC SK44
QST de W1AW
Keplerian Bulletin 44  ARLK044
From ARRL Headquarters
Newington, CT  June 22, 1996
To all radio amateurs

SB KEP ARL ARLK044
ARLK044 Keplerian data

Thanks to Con, W5BWF, for the following Keplerian data.

Decode 2-line elsets with the following key:
1 AAAAAU 00  0  0 BBBBB.BBBBBBBB  .CCCCCCCC  00000-0  00000-0 0  DDDZ
2 AAAAA EEE.EEEE FFF.FFFF GGGGGGG HHH.HHHH III.IIII JJ.JJJJJJJJKKKKKZ
KEY: A-CATALOGNUM B-EPOCHTIME C-DECAY D-ELSETNUM E-INCLINATION F-RAAN
G-ECCENTRICITY H-ARGPERIGEE I-MNANOM J-MNMOTION K-ORBITNUM Z-CHECKSUM

STS-78
1 23931U 96036A   96173.58333333  .00000786  54136-5  44616-5 0    70
2 23931  39.0132   3.5128 0007725 282.2939 280.5779 16.00670877   159
Mir
1 16609U 86017A   96172.80243127  .00000283  00000-0  10284-4 0  5589
2 16609  51.6486 105.6503 0005426  97.2361 262.9116 15.58206144590567
AO-10
1 14129U 83058B   96165.06999368 -.00000011  00000-0  10000-3 0 04316
2 14129  26.1674 204.9170 6008172  23.3305 355.4069  2.05881143069782
RS-10/11
1 18129U 87054A   96173.42519464 -.00000001  00000-0 -18222-4 0 02597
2 18129  82.9253 145.4061 0012370 135.7759 224.4387 13.72366348450757
UO-11
1 14781U 84021B   96173.42275637  .00000057  00000-0  17402-4 0 08953
2 14781  97.8001 163.9566 0012916  77.5355 282.7298 14.69459831658271
RS-12/13
1 21089U 91007A   96173.11834033  .00000034  00000-0  20122-4 0 09028
2 21089  82.9228 186.4252 0027778 221.1076 138.7982 13.74071162269570
AO-13
1 19216U 88051B   96172.99946836  .00002271  00000-0  57709-3 0  2233
2 19216  57.2295 109.5685 7428118  42.7100 355.2438  2.09849114 29920
UO-14
1 20437U 90005B   96173.24831875  .00000061  00000-0  40570-4 0 02107
2 20437  98.5439 256.1892 0010651 187.0986 173.0044 14.29923989334635
RS-15
1 23439U 94085A   96173.08987886 -.00000039  00000-0  10000-3 0 01479
2 23439  64.8199  16.7752 0161066 198.4778 161.0246 11.27526225061226
AO-16
1 20439U 90005D   96173.27593366 -.00000007  00000-0  14145-4 0 00098
2 20439  98.5570 258.4408 0010660 188.7437 171.3560 14.29977470334650
DO-17
1 20440U 90005E   96173.29777084 -.00000015  00000-0  11024-4 0  9892
2 20440  98.5608 259.1057 0010627 187.6309 172.4712 14.30119388334683
WO-18
1 20441U 90005F   96173.28770750 -.00000028  00000-0  59710-5 0 00042
2 20441  98.5603 259.0352 0011385 188.1453 171.9544 14.30088863334684
LO-19
1 20442U 90005G   96173.28320915 -.00000004  00000-0  15217-4 0  9896
2 20442  98.5628 259.5273 0011568 187.6291 172.4716 14.30197649334709
FO-20
1 20480U 90013C   96173.12777808 -.00000010  00000-0  41237-4 0 09031
2 20480  99.0262 197.2380 0541136 115.5455 250.2599 12.83233730298395
AO-21
1 21087U 91006A   96173.44920385  .00000094  00000-0  82657-4 0 07336
2 21087  82.9376 318.5517 0034495 192.2738 167.7581 13.74569326270596
UO-22
1 21575U 91050B   96173.22806102  .00000024  00000-0  22408-4 0 06951
2 21575  98.3499 239.4932 0006771 256.7045 103.3385 14.37027447258643
KO-23
1 22077U 92052B   96173.21692467 -.00000037  00000-0  10000-3 0 05945
2 22077  66.0774 181.0205 0013589 298.9875  60.9786 12.86297552181329
KO-25
1 22828U 93061F   96173.25757122 -.00000022  00000-0  86198-5 0 04827
2 22828  98.5758 248.9540 0009015 205.7953 154.2776 14.28144116110695
IO-26
1 22826U 93061D   96173.20732357 -.00000032  00000-0  44284-5 0 04868
2 22826  98.5792 248.8497 0008324 218.6756 141.3830 14.27805950142576
AO-27
1 22825U 93061C   96173.21131512 -.00000030  00000-0  54031-5 0 05044
2 22825  98.5806 248.6879 0007879 218.2711 141.7914 14.27697334142565
PO-28
1 22829U 93061G   96173.20420259 -.00000000  00000-0  17389-4 0 04800
2 22829  98.5780 248.9660 0009391 202.8168 157.2592 14.28124712142602

Keplerian bulletins are transmitted twice weekly from W1AW.
The next scheduled transmission of these data will be Tuesday,
June 25, 1996, at 2230z on Baudot and AMTOR.
NNNN
/EX


From [e-mail] Tue Jun 25 20:34:16 1996
From: Ohlsson <[e-mail]>
Newsgroups: rec.radio.amateur.space
Subject: STS Freq.
Date: Sat, 22 Jun 1996 19:56:05 +0100
Message-ID: <[e-mail]>
Reply-To: [e-mail]

Hi, is it possible to recieve NASA shortwave signals from the U.S. in
Europe? In particular those frome Goddard Space Flight Center.
What do I need to listen?

/Martin


From [e-mail] Tue Jun 25 20:34:17 1996
From: [e-mail] (Ton Muller)
Newsgroups: rec.radio.amateur.space
Subject: Re: amsat kepler elements?? WHERE!!???
Date: Sat, 22 Jun 1996 21:47:25 GMT
Message-ID: <31cc06a3.735335@news>
References: <31c32bd9.175265@news> <4q1soc$[e-mail]>
Reply-To: [e-mail]

[e-mail] wrote:

>[e-mail] (Ton Muller) wrote:
>
>>Good euwning.
>
>>I am looking for a'n FTP site where to find the Kepler 2 line element's.
>>I have FTP't logsat V5.1 for windows (nice programm,has any one a key??)
>>but my kepler's are 7 day's old.
>>(I now ,it is not much.
>
>>Ton Muller
>>Live long and prosper.
>ftp.amsat.org
And found.
thnxs.

Ton Muller
Live long and prosper.


From [e-mail] Tue Jun 25 20:34:17 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.space
Subject: "NASA" Tracking Software Wanted
Date: Sun, 23 Jun 1996 05:45:26 GMT
Message-ID: <4qilol$[e-mail]>
Reply-To: [e-mail]

Anyone know where I can get a PC software program named "NASA" for
tracking sats?



From [e-mail] Tue Jun 25 20:34:18 1996
From: Michael J Wooding <[e-mail]>
Newsgroups: rec.radio.amateur.space
Subject: VHF Communications Magazine 2/1996
Date: Sun, 23 Jun 1996 17:22:14 +0100
Distribution: world
Message-ID: <[e-mail]>

Hi All,

For those of you who already subscribe to VHF Communications and to
anyone who may be interested, issue 2/1996 of the magazine will be
shipped Monday June 24th,

For information on the contents of this issue or for any other info
regarding the magazine please take a look at our WWW sites.

UK:  http://www.eolas.co.uk/ag/vhfcomm.htm
USA: http://www.clearlight.com/~vhfcomm

Regards ... Mike

--
Michael J Wooding G6IQM     email: [e-mail]
http://www.eolas.co.uk/ag/vhfcomm.htm & http://www.clearlight.co./~vhfcomm
KM Publications, 5 Ware Orchard, Barby, Nr.Rugby, CV23 8UF, UK
Tel: [phone]     Fax: [phone]
VHF Communications Magazine - Especially covering VHF, UHF and Microwaves


From [e-mail] Tue Jun 25 20:34:19 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.space
Subject: FLTSATCOM
Date: Mon, 24 Jun 96 04:00:32 GMT
Message-ID: <[e-mail]>

This may be a little off-base, but can anyone tell me which FLTSATCOM
satelittes are currently active in the western hemisphere (preferably with
there longitude).  Thanks in advance.
----
Dave Wright
San Angelo, TX
[e-mail]



From [e-mail] Tue Jun 25 20:34:20 1996
From: Manfred Bester <manfred>
Newsgroups: rec.radio.amateur.space
Subject: Re: Can't compile SatTrack
Date: 24 Jun 1996 17:37:29 GMT
Message-ID: <4qmjop$[e-mail]>
References: <4qjsff$[e-mail]>

> Has anyone out there compiled SatTrack on a Linux system. I can't seem to
> get it work here. Were can I get the binary?

SatTrack is known to work very well on Linux systems. The only problems
typically encountered at compile time are related to the user's environment
definitions. If the include path and the library path for the X11 modules
are not defined right, then the compilation and the linking will not work.
These problems are resolved by defining the appropriate paths either in the
cshrc file or in the Makefile for SatTrack.

Please email the error messages to [e-mail] and we'll work it out.

The SatTrack web page at

    http://www.primenet.com/~bester/sattrack.html

has just been updated and contains patches for Version 3.1 and new screen
examples for V4.0.

-Manfred

--
==============================================================================
==
Bester Tracking Systems                 http://www.primenet.com/~bester
P.O. Box 9948                           email: [e-mail]
Berkeley, CA 94709                      phone/fax: [phone]
==============================================================================
==



From [e-mail] Tue Jun 25 20:34:21 1996
From: [e-mail] (Brian J. Pennebaker)
Newsgroups: rec.radio.amateur.space
Subject: Any STS-78/SAT during FD?
Date: 24 Jun 1996 20:07:36 GMT
Distribution: world
Message-ID: <4qmsi8$[e-mail]>

Did anyone make any Contact with STS-78 or RS 10, RS15, AO-13 or AO-10?
We tried this weekend during Field Day, but nothing.

73,


Brian N8RPA


From [e-mail] Tue Jun 25 20:34:22 1996
Newsgroups: rec.radio.amateur.space
From: [e-mail] (Rob Janssen)
Subject: Re: Q: Is there a LINUX driver for the KCT/T card ?
Reply-To: [e-mail]
Message-ID: <[e-mail]>
References: <[e-mail]>
Date: Tue, 25 Jun 1996 11:05:51 GMT

In <[e-mail]> [e-mail]@ writes:

>  I think the Subject line states the full question. I am very curious on thi
s issue
>as I would be nice to work with LINUX and my satellite suite.

I don't think there is a KCT driver yet, but you can write it.

>I guess that I
>am asking for a WISP version for LINUX OS.

When you are looking for a tracking program, get sattrack.  It has
been often mentioned in this group.  It comes as source, so you can
quite easily add drivers for tracking hardware.
(I added the driver for the AMSAT-DL interface and a specialized driver
for my own doppler tracking)

http://www.primenet.com/~bester/sattrack.html

Rob
--
+------------------------------------+--------------------------------------+
| Rob Janssen       [e-mail] | BBS: [phone] (2300-0730 local) |
| AMPRnet:       [e-mail] | AX.25 BBS: PE1CHL@PI8WNO.#UTR.NLD.EU |
+------------------------------------+--------------------------------------+


From [e-mail] Tue Jun 25 20:34:23 1996
From: [e-mail]
Newsgroups: rec.radio.info,rec.radio.amateur.space
Subject: ARLK045 Keplerian data
Date: 25 Jun 1996 17:40:57 -0400
Message-ID: <$[e-mail]>


SB KEP @ ARL $ARLK045
ARLK045 Keplerian data

ZCZC SK45
QST de W1AW
Keplerian Bulletin 45  ARLK045
From ARRL Headquarters
Newington, CT  June 25, 1996
To all radio amateurs

SB KEP ARL ARLK045
ARLK045 Keplerian data

Thanks to Con, W5BWF, for the following Keplerian data.

Decode 2-line elsets with the following key:
1 AAAAAU 00  0  0 BBBBB.BBBBBBBB  .CCCCCCCC  00000-0  00000-0 0  DDDZ
2 AAAAA EEE.EEEE FFF.FFFF GGGGGGG HHH.HHHH III.IIII JJ.JJJJJJJJKKKKKZ
KEY: A-CATALOGNUM B-EPOCHTIME C-DECAY D-ELSETNUM E-INCLINATION F-RAAN
G-ECCENTRICITY H-ARGPERIGEE I-MNANOM J-MNMOTION K-ORBITNUM Z-CHECKSUM

STS-78
1 23931U 96036A   96177.25000000  .00000995  54308-5  45918-5 0   192
2 23931  39.0167 338.9502 0007359 304.4300 185.5309 16.01590811   748
Mir
1 16609U 86017A   96177.09930501  .00000262  00000-0  10000-4 0  5701
2 16609  51.6506  84.1085 0005581 106.8928 253.2708 15.58253394591238
HST
1 20580U 90037B   96177.08457901  .00000270  00000-0  11486-4 0 08293
2 20580  28.4684 167.7876 0005913 256.0349 103.9578 14.91067803139766
AO-10
1 14129U 83058B   96165.06999368 -.00000011  00000-0  10000-3 0 04316
2 14129  26.1674 204.9170 6008172  23.3305 355.4069  2.05881143069782
RS-10/11
1 18129U 87054A   96176.99767963  .00000030  00000-0  16001-4 0 02561
2 18129  82.9253 142.7660 0012451 126.3480 233.8825 13.72366602451248
UO-11
1 14781U 84021B   96176.96360996  .00000087  00000-0  22542-4 0  8930
2 14781  97.8005 167.3407 0012903  67.1671 293.0901 14.69460754658798
RS-12/13
1 21089U 91007A   96177.12330925 -.00000003  00000-0 -18672-4 0  8983
2 21089  82.9228 183.4556 0027907 209.6163 150.3411 13.74070895270128
AO-13
1 19216U 88051B   96176.33504584  .00001310  00000-0  61824-3 0  2253
2 19216  57.2258 108.8911 7428633  43.0553 355.2246  2.09866955 29997
UO-14
1 20437U 90005B   96176.88695964  .00000014  00000-0  22326-4 0 02036
2 20437  98.5438 259.7594 0010857 176.0337 184.0919 14.29924153335153
RS-15
1 23439U 94085A   96176.99240597 -.00000039  00000-0  10000-3 0 01451
2 23439  64.8188  10.4614 0160882 197.7817 161.7438 11.27526596061662
AO-16
1 20439U 90005D   96176.77449376  .00000018  00000-0  23970-4 0 00061
2 20439  98.5578 261.8815 0010766 177.9749 182.1479 14.29978007335153
DO-17
1 20440U 90005E   96176.72602010  .00000005  00000-0  18591-4 0 00041
2 20440  98.5608 262.4779 0010797 177.0084 183.1170 14.30119802335175
WO-18
1 20441U 90005F   96176.78599584  .00000000  00000-0  16977-4 0 00006
2 20441  98.5603 262.4757 0011524 177.2289 182.8958 14.30089301335186
LO-19
1 20442U 90005G   96176.78123122  .00000023  00000-0  25491-4 0 00082
2 20442  98.5627 262.9689 0011718 176.7498 183.3763 14.30198269335200
FO-20
1 20480U 90013C   96177.10413149  .00000011  00000-0  88195-4 0 09021
2 20480  99.0258 200.4577 0541113 106.5318 259.5916 12.83234052298908
AO-21
1 21087U 91006A   96177.45273116  .00000094  00000-0  82657-4 0  7165
2 21087  82.9365 315.5839 0034955 181.1480 178.9601 13.74569483271143
UO-22
1 21575U 91050B   96177.12725066  .00000007  00000-0  16559-4 0 07146
2 21575  98.3495 243.2758 0006750 244.4429 115.6060 14.37027735259204
KO-23
1 22077U 92052B   96177.10444137 -.00000037  00000-0  10000-3 0 05913
2 22077  66.0768 172.8798 0013513 297.2664  62.6976 12.86297385181821
KO-25
1 22828U 93061F   96176.13006903 -.00000043  00000-0  17089-6 0 04727
2 22828  98.5761 251.7761 0009190 195.5147 164.5710 14.28144081111101
IO-26
1 22826U 93061D   96177.13166307 -.00000027  00000-0  64741-5 0 04820
2 22826  98.5794 252.7039 0008327 207.0299 153.0431 14.27806170143136
AO-27
1 22825U 93061C   96176.71545550  .00000017  00000-0  24416-4 0 04960
2 22825  98.5807 252.1295 0008025 206.1668 153.9109 14.27697887143069
PO-28
1 22829U 93061G   96177.12766761  .00000023  00000-0  26839-4 0 04787
2 22829  98.5782 252.8207 0009392 191.3717 168.7254 14.28125369143161

Keplerian bulletins are transmitted twice weekly from W1AW.
The next scheduled transmission of these data will be Saturday,
June 29, 1996, at 2230z on Baudot and AMTOR.
NNNN
/EX


From [e-mail] Mon Jul 01 12:25:32 1996
From: Dave Hockaday <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: CB to Convert ?
Date: Tue, 25 Jun 1996 10:46:46 -0700
Message-ID: <[e-mail]>
References: <4pmmpt$[e-mail]> <4pp2kj$[e-mail]> <[e-mail]> <[e-mail]>

> > I've found the 23 or 40 channel Hygain boards to be easy to
> > convert. The ones that use a PLL02A pll IC and 3 xtals (10.240 and 10.595
> > mhz and a 3rd I can't remember at this moment). They have a greenish PC
> > board and were made for Hygain, Midland, Kraco (K-Mart), etc.


> Hi,
>   Has anybody ever gotten the "odd" pll chip to work??
> The "MM58141n" pll chip that is somethimes used instead of the Pll020?
>   Would I be ahead to use the board for the IF and Audio stages??
>
> de Roy AA0B ([e-mail])

I'm not familiar with that chip. Was it used in the units that were
remotely controller from the mic?
--
Dave Hockaday Wb4iuy
[e-mail]

http://www.webbuild.com/~wb4iuy/
http://www.webbuild.com/~wb4iuy/teara.html
http://www.RTPnet.org/~fcarc/
http://www.RTPnet.org/~rdrc/
http://www.geocities.com/TheTropics/3349/
http://www.geocities.com/TheTropics/3341/
http://www.geocities.com/TheTropics/3489/
http://www.geocities.com/TheTropics/3212/


From [e-mail] Mon Jul 01 12:25:32 1996
From: Zack Lau <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Homebrew Microwave Equipment
Date: Tue, 25 Jun 1996 11:17:18 -0400
Message-ID: <[e-mail]>
References: <[e-mail]>
To: [e-mail]

> Laura Halliday VE7LDH [e-mail] wrote:

> Don't let people try to tell you that WBFM is completely passe. After
> you play with voice, why not try ATV? Or data? These things are really
> really really simple to use. Don't be afraid!
> I agree--these things are probably a good first step to high data
rate communications.  If nothing else, playing around with voice
can teach you about finding LOS paths--no trivial matter unless you
have distinctive landmarks or a manadnock type mountain (big peak
that sticks out like a sore thumb).

You might even experiment with cheap varactor diodes--I don't think
you need to use expensive devices packaged for waveguide installation.
Why not have a piece of circuit board across the guide which you can
solder ordinary parts to?  Are there cheap diodes that work well
as X band varactors?  Green LEDs?

Zack KH6CP/1  8 states on 10 GHz
[e-mail]


From [e-mail] Mon Jul 01 12:25:34 1996
From: [e-mail] (Mike Davis)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Toroid WBT
Date: Tue, 25 Jun 1996 20:57:36 -0700
Message-ID: <[e-mail]>
References: <[e-mail]>

In article <[e-mail]>, [e-mail] (Mike
Davis) wrote:
>
> Just wondering if anyone has a canned wide band toroidal transformer
> recipe for around 30 MHz.

Newsfeed is poor here, I pursued pointers to MiniCircuits and ordered a
couple, will see how they work.

--
Articles: Melatonin, Folate, DHEA, etc.; Discount Sources Listing,
Herpes Alternatives Page, The Buffalo SpringBoard (retro)
         http://www.quake.net/~xdcrlab/hp.html
ULTRANET: Ultrasound Technology Graphic Hot Links
                  http://www.quake.net/~xdcrlab/Ultrasound.html
Save the BW, I report unsolicited commercial email -> Blacklist of Internet Ad
vertisers:   http://www.cco.caltech.edu/~cbrown/BL/


From [e-mail] Mon Jul 01 12:25:35 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Question regarding RX/TX switching on 50 CW TX
Date: 26 Jun 1996 03:37:06 GMT
Message-ID: <4qqb92$[e-mail]>
Reply-To: [e-mail]

I am working on the design for a 50W CW TX for 40M and 80M,
based on a 6LR8 TV sweep tube.

I wish to enable the RX to use the same antenna as the TX.  I plan
on including a relay to switch the antenna center conducter from the
TX output to the center conducter of the RX input.  In addition, the HT
will be disconnected from the TX circuit while in receive mode so as
to eliminate any interference from the TX local oscillator.  The filament
supply will, of course, remain connected.

The chassis of the RX and TX will be joined via the shield of the RG8/U
cable connecting the RX to the TX as noted above.  Both devices will
be isolated from the mains by transformers, of course.

My questions are these:

- Is this a practical thing to do?  Are there any gotchas when using
  normal, sturdy xPDT relays for this type of thing at the mentioned
  power and frequency?  Will the receiver be blown off the table on
  transmission (or be deaf when switching back to RX mode)?

- Is it better to leave the RX antenna center conducter floating when
  in TX mode, or should it be shorted to the chassis?  Which will
  result in less TX energy leaking into the receiver antenna?

Cheers and thanks in advance,

Chris.


From [e-mail] Mon Jul 01 12:25:36 1996
From: [e-mail] (Michael Stein)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: LORAN C homebrew?
Date: Wed, 26 Jun 1996 07:29
Message-ID: <[e-mail]>
References: <4qdloc$[e-mail]>
Reply-To: [e-mail]

See Radio-Electronics, July 1993:
   Using LORAN-C for Time and Frequency Calibration
  by R.W.Burhans

Also Burhans has a series of articles on VLF receiving
(active antennas etc) around then (+ - a year).

Also see (if it's still there) a technical report in
postscript format by David L. Mills (the network timing
wizard Mills):

  A Computer-Controlled LORAN-C Receiver for Precision Timekeeping

  Electrical Engineering Department University of Delaware
  Techinal Report 92-3-1      March 1992

Try looking around for "clock" and "timing" sites on the WEB, I
think the article was on a udel.edu server (thumper.udel.edu?)
and available via FTP as several (or one?) tar file.

In article <4qdloc$[e-mail]>,
[e-mail] (William A Moyes) writes:

>        Does anyone have designs for a homebrew LORAN reciever?  All I
>need is the antenna/filter/RF amp stages, the processing steps should be
>easy.  Thanks!
>
>                        -William Moyes
>                        [e-mail]
>                        KC6ARO


From [e-mail] Mon Jul 01 12:25:37 1996
From: Gary Calvert <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: LORAN C homebrew?
Date: Wed, 26 Jun 1996 10:08:52 -0500
Distribution: usa
Message-ID: <[e-mail]>
References: <4qdloc$[e-mail]> <[e-mail]>

If you are looking for a clock access from the Internet....
I have a link from my Home page at
http://www.holli.com/~gcalvert/index.html
that connects to a Navy clock and they also provide JAVA script
to add a clock to a web page.

Good Luck.


Michael Stein wrote:
>
> See Radio-Electronics, July 1993:
>    Using LORAN-C for Time and Frequency Calibration
>   by R.W.Burhans
>
> Also Burhans has a series of articles on VLF receiving
> (active antennas etc) around then (+ - a year).
>
> Also see (if it's still there) a technical report in
> postscript format by David L. Mills (the network timing
> wizard Mills):
>
>   A Computer-Controlled LORAN-C Receiver for Precision Timekeeping
>
>   Electrical Engineering Department University of Delaware
>   Techinal Report 92-3-1      March 1992
>
> Try looking around for "clock" and "timing" sites on the WEB, I
> think the article was on a udel.edu server (thumper.udel.edu?)
> and available via FTP as several (or one?) tar file.
>
> In article <4qdloc$[e-mail]>,
> [e-mail] (William A Moyes) writes:
>
> >        Does anyone have designs for a homebrew LORAN reciever?  All I
> >need is the antenna/filter/RF amp stages, the processing steps should be
> >easy.  Thanks!
> >
> >                        -William Moyes
> >                        [e-mail]
> >                        KC6ARO

--
Gary Lee Calvert  MSt CT-60-I Delco Kokomo  - clickable from NS2.x
Unix           mailto:[e-mail]
Lotus Notes    mailto:[e-mail]
Work HomePage  http://www.delcoelect.com/~c23glc/home.html
Home HomePage  http://www.holli.com/~gcalvert/index.html
Work Ph 317-451-5725 FAX [phone] Work Ph   8-322-5725 FAX
8-322-5312


From [e-mail] Mon Jul 01 12:25:38 1996
From: "Valery Filin" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Radioheart
Date: 26 Jun 1996 11:06:55 -0400
Message-ID: <[e-mail]>
Reply-To: "Valery V.Filin/Visotckogo 12 fl.24/Odessa/270025/Ukraine" <[e-mail]>

Hello!

Greetings for everybody who lives in this big and various World.
Greetings for all who likes music or radio.
I am writing my message from Odessa.
It's interesting town, intercity near Black Sea
and here i'm making the tiny musical radiostation.
Even a small station begin to live when she has a pulsing heart.
Yeah, it's a transmitter.
Step by step i save up means for the transmitter.
Anyway i need your help.
You can write me a letter:

  Valery V. Filin
  Visotckogo str. 12, fl.24
  Odessa, 270025
  Ukraine

I'll glad to read your advices, opinions and simply good words.
Peoples who want help me are interesting for myself.
Maybe you have a records which must be on a radio.
Please, send your ideas.
And at last you can support me by small sum:

  Commerzbank AG, Frankfurt/Main acc.no.4008869901USD
  in favour of Imexbank, Odessa in favour of
  Valery Victorovich Filin acc.no.001139619.44

Or the way trough the american bank:

  The Bank Of New York, N.Y. acc.no.890-0054-808 in favour of
  Dialogbank in favour of Imexbank acc.no.02000090088 in favour of
  Valery Victorovich Filin acc.no.001139619.44

Thank you.
Warmest regards,
                                        Valery


From [e-mail] Mon Jul 01 12:25:39 1996
From: George Georgiev <[e-mail]>
Newsgroups: rec.radio.scanner,rec.radio.amateur.homebrew,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment
Subject: Q: How to mesure 900MHz and 2.4GHz RF density?
Date: Wed, 26 Jun 1996 12:31:56 -0400
Message-ID: <Pine.SOL.3.91.960626121233.20229A-100000@smtp>

Hi everyone,

I am interested of how to mesure current 902-916 MHz diapasone RF field
density and also 2.4 GHz diapasone density downtown Montreal in order to
see if a wireless spread-spectrum data link in one of these wave ranges
could be used instead of cable link. Is there some (relatively)simple
device (I will make it if possible), that I can use with yagi antenna to
pinpoint where are located any emiters?

                        Thanks in advance, George.

---------  All opinions are my own, no company or org. ---------
---------  should be linked with what is stated here.  ---------
George Georgiev    [e-mail]
                   [e-mail]



From [e-mail] Mon Jul 01 12:25:40 1996
Newsgroups: rec.radio.amateur.homebrew
From: [e-mail] (Mark Zenier)
Subject: Re: LORAN C homebrew?
Message-ID: <[e-mail]>
References: <4qdloc$[e-mail]>
Date: Wed, 26 Jun 1996 16:15:11 GMT

in <4qdloc$[e-mail]>, William A Moyes wrote:
:       Does anyone have designs for a homebrew LORAN reciever?  All I
: need is the antenna/filter/RF amp stages, the processing steps should be
: easy.  Thanks!

Check out an article by Burhans in Radio-Electronics magazine.
Sometime in the summer of 1983.

Mark Zenier  [e-mail]  [e-mail]



From [e-mail] Mon Jul 01 12:25:41 1996
From: "[e-mail]" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Electronic Workbench
Date: 26 Jun 1996 16:42:51 GMT
Message-ID: <4qrpab$[e-mail]>
References: <4qbnfs$[e-mail]>
To: [e-mail]

distributed by interactive image technologies
toronto ca
416 977 5550

they have a stripped demo version  that runs 15 minute sessions

fun stuff


[e-mail] (Chip Owens) wrote:
>One of the recent ham magazines had an article about building up
>a homebrew 30M transceiver. The author made extensive use of a
>software package call "Electronic Workbench". Has anyone else used
>this package that would care to comment on their experience with it?
>
>Is there a source in the US to buy this software and how much is it?
>
>Thanks!
>Chip Owens, NW0O




From [e-mail] Mon Jul 01 12:25:41 1996
From: [e-mail] (Bill Rupp)
Newsgroups: rec.radio.amateur.homebrew
Subject: Microwave Antennas
Date: Wed, 26 Jun 1996 23:07:11 GMT
Message-ID: <4qsft4$[e-mail]>

I have two mirowave antennas and radomes that I picked up surplus..

They are Andrew 48" Diameter dishes and have the markings 47017 and
TM0057.  Can anyone tell me what freq these are for and if they are
worth keeping around..  Any Idea for projects?

Please E-Mail me with replies, Bill N0MKJ

[e-mail]
www.execpc.com/~wrupp




From [e-mail] Mon Jul 01 12:25:43 1996
From: Roger Basford <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Question regarding RX/TX switching on 50 CW TX
Date: Wed, 26 Jun 1996 23:10:55 +0100
Distribution: world
Message-ID: <[e-mail]>
References: <4qqb92$[e-mail]>

In article <4qqb92$[e-mail]>, [e-mail] writes
>I am working on the design for a 50W CW TX for 40M and 80M,
>based on a 6LR8 TV sweep tube.
>
>I wish to enable the RX to use the same antenna as the TX.  I plan
>on including a relay to switch the antenna center conducter from the
>TX output to the center conducter of the RX input.  In addition, the HT
>will be disconnected from the TX circuit while in receive mode so as
>to eliminate any interference from the TX local oscillator.  The filament
>supply will, of course, remain connected.
>
>
>My questions are these:
>
>- Is this a practical thing to do?  Are there any gotchas when using
>  normal, sturdy xPDT relays for this type of thing at the mentioned
>  power and frequency?  Will the receiver be blown off the table on
>  transmission (or be deaf when switching back to RX mode)?
>
>- Is it better to leave the RX antenna center conducter floating when
>  in TX mode, or should it be shorted to the chassis?  Which will
>  result in less TX energy leaking into the receiver antenna?
>
Hi Chris,

Assuming you are not intending to use break-in keying, it might be good
practice to use a primary relay to a) ground the RX antenna input and b)
energise the antenna c/o relay at the TX, that will give your RX some
protection before the TX fires up. With a modern solid-state RX this
would be a sensible precaution to protect the first device(s) in the RX.
Basically though, the way you are proposing with a single c/o relay is
fairly standard and should work OK with a more resilient tubed RX.

Some form of RX muting is desirable too, if only to protect your ears!
Try lifting one end of the RF gain control and, with spare set of
contacts on the ant c/o relay, switching in a extra variable resistor to
effectively "turn-down" the RX gain on transmit, set it to the right
level and you'll get sidetone. If you can't switch off or alter the AGC
on the RX you might get some de-sensing or slow recovery of the RX when
switching back to receive.

A couple of other points:- lift the HT from the PA anode (plate in the
US?) and screen as well as the LO when on receive, PA tubes can generate
a lot of hash in the RX even when undriven by the LO. If you're using
crystal control watch out for excessive current in the crystal, the
modern HC series ones can burn out in a tubed circuit, better to look
around for the FT241/3, etc type (or 10X/10XAJ if you know any antique
shops!).

Sounds like a nice little project, good luck!

73, Roger G3VKM.


                *///////////////////////////////////////*
                *   e-mail: [e-mail]   *
                * Roger Basford, Haddiscoe, Norfolk U.K.*
                *///////////////////////////////////////*


From [e-mail] Mon Jul 01 12:25:44 1996
From: [e-mail] (Curtis, Charles)
Newsgroups: rec.radio.amateur.homebrew
Subject: (none)
Date: 26 Jun 96 23:44:00 GMT
Message-ID: <[e-mail]>


Date: 26 Jun 1996 01:08:03 GMT
From: [e-mail] (Clark Jones)
Subject: Home brew

One thing I suggest you stay away from:  The Ramsey kits.  I built one
for the 1.25M band, and found it to have a lot of (needless) design
flaws.  It also has problems with a 5kHz spur in the synthesizer.

[snip]

It's this kind of stuff that gives kit building a bad name.

                                                73,
                                                Clark

I offer $20.00 for it "sight unseen" plus postage.  Are you interested?

73 de Chuck, N2UCN



From [e-mail] Mon Jul 01 12:25:45 1996
From: [e-mail] (XL3381)
Newsgroups: rec.radio.amateur.homebrew
Subject: need help w/ built project not working in chicago
Date: 27 Jun 1996 04:52:33 -0400
Message-ID: <4qti4h$[e-mail]>
Reply-To: [e-mail] (XL3381)

I had someone build an FM car radio diversity antenna for me which is not
working right.  FYI, the theory of this antenna is that two antennas are
monitored for the strongest pilot subcarrier signal and the circuit
constantly switches to the one receiving the best signal to minimize
multipath distortion.  If there's someone in the Chicago area who would be
interested in troubleshooting this for me I'd be really grateful to hear
from you!  I do have a .gif file of the schematic to send if you'd like to
look it over.

contact me at:

[e-mail]


From [e-mail] Mon Jul 01 12:25:46 1996
From: [e-mail] (Dave Moorman)
Newsgroups: rec.radio.amateur.homebrew,rec.radio.swap
Subject: Re: OLD A.M. KILLOWATT BROADCAST TRANSMITTER WANTED
Date: Thu, 27 Jun 1996 08:10:34 -0500
Message-ID: <[e-mail]>
References: <4qsdrb$[e-mail]>

In article <4qsdrb$[e-mail]>, gary <[e-mail]> wrote:

> "The NRA doesn't vote, it's *MEMBERS* do - *ABUNDANTLY!*"

I recently read that the NRA members usually don't vote along the lines
that their shrill leadership recommends.

Dave

--
Dave Moorman
Downers Grove
Illinois, USA                               Be big, don't belittle!


From [e-mail] Mon Jul 01 12:25:46 1996
From: [e-mail] (Lars Moell)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Need Address for Mini Circuts
Date: Thu, 27 Jun 1996 13:14:52 GMT
Message-ID: <4qu1en$[e-mail]>
References: <4qtagm$[e-mail]>


Hi Allen
I hope this will help you.

Mini Circuits
P O Box 350166
Brooklyn
New York 11235-0003
Phone [phone]  Fax [phone]
Internet http://www.minicircuits.com

73 de SM5GLC

[e-mail] (ALLEN SKLAR) wrote:


>Hello All,
>Does some one ahve an address for Mini Circuts...
>I would like to get a catalog, Thanks
>Allen Sklar, AA7BJ
>PO Box 10095
>Scottsdale AZ, 85271-0095

>--
>Allen Sklar                           Member,
>Scottsdale, Arizona                   American Radio Relay League
>[e-mail]                 Society of Broadcast Engineers
>[e-mail]                       IEEE




From [e-mail] Mon Jul 01 12:25:48 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Finding permeability of Toroids
Date: 27 Jun 96 15:49:53 GMT
Message-ID: <[e-mail]>

I still have one of the company's HP network analysers on loan at
home.  These are *REALLY* nice toys (oops -- tools).  They  allow you
to plot magnitude and phase vs frequency from 100 Hz to 40MHz for any
2 terminal device (there are other functions as well).

The thing that this particular model does *great* is to calculate an
equivalent circuit for the 2 terminal device you hook up to it.

I am pulling a bunch of coils from old circuit boards to use in a
couple of projects, so I did an equivalent circuit for them.

In the process I found some old toroids I had wound many years ago.  I
*QUICKLY* discovered which toroids were ferrite and which were
powdered iron.  In every case the ferrite cores (usually 67 mix)
showed *very* high inductance below 1 MHz, *but* they showed
self-resonance in the low MHz range and turned into good capacitors as
the frequency went into the HF range.  They make really good inductors
for filters and transformers in switching power supplies, but they are
useless for inductors at HF.

The point to this is that it is *very* important to measure the
inductance of any unknown core at the frequency where you will use it.
You need to not only measure the inductance, but the Q as well.
Ferrites (and powdered iron outside the useful range) may be
inductive, but the Q may be awful!  You need fairly good test
equipment to do this.

Now for my soapbox:

Any toroid should work OK below 1MHz regardless of core type.  There
will be varying capabilities depending on core type, but they should
do OK.

When you start to do HF and VHF work, spend the money to buy brand new
cores!  That way you know exactly what you have.  The new cores are
cheap enough, and you will probably need $10 or so worth of cores for
any project, so you don't have to worry about a minimum order from
somewhere.  I purchased 4 Yellow Amidon Iron core toroids (low VHF
region) for about $2.50 a couple of years ago at the local electronics
store.  It's cheap insurance for knowing that I have the best core for
the job.

While on the subject of color coding:  If you didn't buy the core new
and make sure you labled it, you probably don't know what it is.
There are some imported cores I have found that use the same colors as
the Amidon cores, but they *are not* the same material.  Most of the
stuff I scrounged from consumer equipment is ferrite even though the
colors would indicate iron core.

Ray Mack
WD5IFS
[e-mail]
Friendswood (Houston), TX



From [e-mail] Mon Jul 01 12:25:48 1996
From: [e-mail] (D.W.Hemphill KC5NG)
Newsgroups: rec.radio.amateur.homebrew
Subject: Can someone I.D. these Amidon cores' frequency range?
Date: 27 Jun 1996 19:04:27 GMT
Message-ID: <4qulvr$[e-mail]>

I was given a bunch of new, unused Amidon toroid cores.  Does anyone
have the Amidon literature handy, and can you tell me what the freq-
uency range of each of these cores is?  I might be able to use them
if I knew what frequencies they were recommended for...

T25-2
T25-10
T25-12
T30-22
T37-10
T37-12
T50-10
T50-12
FT37-67
FT50-67
FT50B-63

Thanks and 73 de KC5NG



From [e-mail] Mon Jul 01 12:25:50 1996
From: Brian Olliver <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: VSWR meter for UHF bands Wanted
Date: Thu, 27 Jun 1996 23:35:41 +0100
Distribution: world
Message-ID: <[e-mail]>
References: <4qgisc$[e-mail]> <[e-mail]>

In article <[e-mail]>, John M Domblewski
<[e-mail]> writes
>David Peter Cureton wrote:
>>
>> Hi,
>>         I'm looking for a scematic for a VSWR meter that will work into
>> the uhf bands up to 500Mhz. Most designs I have found only extend to the
>> 30Mhz barrier. I have been thinking of modifying the directional coupler
>> of the tandem match directional wattmeter outlined in the ARRL handbook
>> but are unsure if transformers in this design would work very well at
>> such a high frequency.
>>
>> How accurate are the VSWR meters that are made of simple stripline
>> construction?
>>
>> Ultimatly I would like a meter that covers the 2 meter band as well as the
>> UHF CB band a bit below 500Mhz.
>>
>> Thanks in advance
>>
>> '73 de David
>>
>> Email me on [e-mail], I will post results to the
>> newsgroup
>
>
>
>Bird watt meter!!!!!!!!!!!
>
>John

-hello
if you only want relative readings and cheap construction
then carefully tuck a couple of good quality diodes under the
outer copper braid of some good coax earthing the one end of course
by slitting the pvc or pet outer and soldering carefully bring the
other end of each diode out insulated and with a very small resistor in
series say .1 watt 470 ohms decouple it with a disc ceramic cap back to the
outer braid
use the coax in line with tx output and switch the meter between diodes
the 470 ohms prevents inrush to the cap blowing the diode if used on very
high power tx's
you can't seriously measure watts with a diode """""-
Brian Olliver                                  -  -
                                                6
                                               ~~~
                                                v



From [e-mail] Mon Jul 01 12:25:50 1996
From: [e-mail] (qrk)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Question about winding inductors
Date: Fri, 28 Jun 1996 08:49:06 GMT
Message-ID: <4r069u$[e-mail]>
References: <[e-mail]>
Reply-To: [e-mail]

Nathan Odle <[e-mail]> wrote:

>[snippage]
>In case you're wondering, I'm building
>a pair of receive preamps using 2 MAR-6 MMIC's for the 10GHz link I'm
>putting together.  Thanks to anyone that can help...

MAR-6 is rated for 2 GHz tops. At 10 GHz, I don't think you will get
appreciable gain out of it. Or do you mean 1.0 GHz?

-
Mark Chun  |  [e-mail]  |  Santa Barbara, California



From [e-mail] Mon Jul 01 12:25:52 1996
From: [e-mail] (Bob Applegate)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Home brew
Date: 28 Jun 1996 13:52:37 GMT
Message-ID: <4r0o35$[e-mail]>
References: <4qffc3$[e-mail]> <4qq2hj$[e-mail]>

In article <4qq2hj$[e-mail]>, [e-mail] (C
lark Jones) says:
>

>One thing I suggest you stay away from:  The Ramsey kits.  I built one
>for the 1.25M band, and found it to have a lot of (needless) design
>flaws.  It also has problems with a 5kHz spur in the synthesizer.

I've learned to expect very little from Ramsey, so I've been
only mildly disappointed.  They have OLD, bad designs.  Ramsey
doesn't seem too interested in improving their products.

>My only connection with Ramsey is as a DISsatisfied customer.  It would
>not have taken much (less than a $5 increase in the cost of the kit) to
>make it a _LOT_ better, IMNSHO.

I'm really surprized they stay in business.  Anyone who's every
built any of their junk knows to avoid them.  At Dayton, they
were there in force, although a lot of people walking buy were
openly complaining about the poor quality.



From [e-mail] Mon Jul 01 12:25:53 1996
From: Jim <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Question about winding inductors
Date: 28 Jun 1996 14:03:28 GMT
Message-ID: <4r0ong$[e-mail]>
References: <[e-mail]> <[e-mail]>

Check your math, guys -- those coils sound awfully big for use
on 10 GHz, unless they're for power supply and bias filtering.

You can pick up scrap 12 ga wire on any job site -- it's
what they wire new homes with.  And the gauge of the wire
in inductors is relatively non-critical -- it's more an issue
of how tight the turns need to be (TPI) to get the desired
inductance.  Get out your spreadsheet and step through
the values on the ARRL inductance equation  (which, incidentally,
is an APPROXIMATION) to see how little the inductance varies
with wire diameter.

A significant factor of wire size vs. turns per inch is -- you
can easily make a bifilar wind on a removable core, remove
one winding, and remove the core to have a perfect air-core coil.
The extra winding works as a spacer.

For 1/2" diameter, a drill bit held in a vise will work perfectly.

N6OTQ




From [e-mail] Mon Jul 01 12:25:54 1996
From: [e-mail] (William S. Morgart)
Newsgroups: comp.dsp,rec.radio.amateur.homebrew,sci.electronics.design
Subject: Re: Fast 12 bit DACs
Date: 28 Jun 1996 14:23:01 GMT
Message-ID: <4r0ps5$[e-mail]>
References: <4qrjfk$[e-mail]>

Richard Hosking ([e-mail]) wrote:
: Anyone know of sources and prices in one off quantities for fast 10-12
: bit DACS for a DDS system  (50 MSPS)
:  Thanks

: Richard
: VK6BRO
: [e-mail]
: http://www.iinet.net.au/~richardh

Take a look at http://www.analog.com. They have some very fast devices.
For example the AD9020 is a 10 bit 60msps device. Don''t know what their
prices are though.

-------------------------------------------------------------------------
William S. Morgart                     inet:  [e-mail]
Principle Scientific Analyst,          Phone: [phone]
Bioinformatics                         Fax:   [phone]

SmithKline Beecham Pharmaceuticals
709 Swedeland Road,
PO. Box 1539, MS UW2230
King of Prussia, PA 19406-0939
-------------------------------------------------------------------------



From [e-mail] Mon Jul 01 12:25:55 1996
From: [e-mail]
Newsgroups: rec.radio.amateur.homebrew
Subject: More toroids
Date: 28 Jun 96 14:59:20 GMT
Message-ID: <[e-mail]>

Rick said:

Whoa!  Surely you aren't talking about Fair-Rite #67?  That's


Rick:

        My brain is in gear now.  You are absolutely right. the cores
I was measuring were Fair-Rite mix 43 and a couple of mix 61.  I was a
little surprised that the mix 61 cores showed such bad response at HF.
I just saw your post, so I'll have to re-test the 61 mix cores
tonight.

        I checked the data in the handbook (presumably direct from
Amidon or Fair-Rite) on mix 43 and it, indeed, says it is only good up
to about 1 MHz.  Mix 61 is supposed to be good up to 10MHz, so I
definately need to re-test those cores!

Ray Mack
WD5IFS
[e-mail]
Friendswood (Houston), TX



From [e-mail] Mon Jul 01 12:25:56 1996
From: [e-mail] (John Stroppel)
Newsgroups: rec.radio.amateur.homebrew,rec.radio.swap
Subject: Re: OLD A.M. KILLOWATT BROADCAST TRANSMITTER WANTED
Date: 28 Jun 1996 17:13:52 GMT
Distribution: world
Message-ID: <4r13sg$[e-mail]>
References: <4qsdrb$[e-mail]>

I don't know of a transformer that will produce three phase, but I have taken
capacitors and shifted one side of the single phase 240 vac to get a new
phase which worked with a welder. There is a rotory converter which is a
three phase motor with some capacitors that does produce a better 3 phase.


John WA0VYZ

--
 John Stroppel                         | Internet: [e-mail]
 The University of Iowa - Hygienic Lab | Amateur Radio: WA0VYZ
 Oakdale Research Campus, OH-M7A       | Voice:    [phone]
 Iowa City, IA   52242                 | Fax:      [phone]


From [e-mail] Mon Jul 01 12:25:57 1996
From: [e-mail] (Chris Farrell)
Newsgroups: rec.radio.scanner,rec.radio.amateur.homebrew,rec.radio.amateur.digital.misc,rec.radio.amateur.equipment
Subject: Re: Q: How to mesure 900MHz and 2.4GHz RF density?
Date: 28 Jun 1996 17:14:53 GMT
Message-ID: <4r13ud$[e-mail]>
References: <Pine.SOL.3.91.960626121233.20229A-100000@smtp>

You could use a RF radiation field servey meter that would give you mw/cmsq
The probes used for such meters are so broad banded that you would
have a difficult time determining which frequencies you are measuring.

The only way to get a good feel for the spectrum is with a spectrum analyzer.
You can connect an amplifier to your Yagi if the signals are low level.
You could build a spectrum analizer that would connect up to an o-scope but I
have never seen one that would extend above 1.2 without down conversion.

You would be much better off with a portable spectrum analyzer tektronics make
s
a model 492P which retailed for ~ $12K US.  Try a rental place or maybe Tucker

will rent/lease one for your measurements.  They are on the WWW I don't have
the address handy. Use a search engine.

You would then need to calculate the free space attenuation of the signal leve
l
you recieved and you could determine the approx tx output if you know the
distance from the emitter.

Chris

In article <Pine.SOL.3.91.960626121233.20229A-100000@smtp>,
[e-mail] says...
>
>Hi everyone,
>
>I am interested of how to mesure current 902-916 MHz diapasone RF fiel
>d
>density and also 2.4 GHz diapasone density downtown Montreal in order
>to
>see if a wireless spread-spectrum data link in one of these wave range
>s
>could be used instead of cable link. Is there some (relatively)simple
>device (I will make it if possible), that I can use with yagi antenna
>to
>pinpoint where are located any emiters?
>
>                        Thanks in advance, George.
>
>---------  All opinions are my own, no company or org. ---------
>---------  should be linked with what is stated here.  ---------
>George Georgiev    [e-mail]
>                   [e-mail]
>



From [e-mail] Mon Jul 01 12:25:59 1996
From: [e-mail] (Dan Hogan)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: I want a license
Date: Fri, 28 Jun 1996 18:28:32 GMT
Message-ID: <[e-mail]>
References: <4qtalb$[e-mail]>

[e-mail] (Joseph Huddleston) wrote:

>I want to take whatever exam(s) are necessary to obtain a license for voice c
ommunication.
>I need to practice the CW practical aspect.  I would like to test toward the
later part of
>August 1996.  Who administers exams in the Los Angeles area?

Here is an L.A list from the ARRL directory from the FTP
site at oak.oakland.edu.

CALIFORNIA L.A Area Exams
06/29/96,A,Culver City,90049,310-459-0337,Scott V Swanson
06/29/96,5,Torrance,96900,310-834-0558,Renato Santos
07/12/96,A,Irvine,92717,714-824-8477,Jack C Lockhart
WD6AEI
07/13/96,5,Bell,90201,213-560-8618,Pedro Cacheiro
07/13/96,A,Glendora,91740,818-966-7715,Perry Stevens
P.R.C.
07/13/96,5,San Pedro,90710,310-325-2965,Elvin Lytle
07/18/96,5,Fountain Valley,92708,714-531-6707,Allan Avnet
07/20/96,5,Westminster,92640,714-638-4057,Terry Hall
07/27/96,A,Culver City,90049,310-459-0337,Scott V Swanson
07/27/96,5,Garden Grove,92643,714-534-8633,John Gregory
07/27/96,A,Pomona,91769,909-949-0059,Donald Warburg
WA6HNC
08/10/96,5,Bell,90201,213-560-8618,Pedro Cacheiro
08/10/96,5,Brea,92621,310-691-1514,Robert Reitzel
08/10/96,A,Glendora,91740,818-966-7715,Perry Stevens
P.R.C.
08/10/96,5,San Pedro,90710,310-325-2965,Elvin Lytle
08/15/96,5,Fountain Valley,92708,714-531-6707,Allan Avnet
08/31/96,A,Culver City,90049,310-459-0337,Scott V Swanson
08/31/96,A,Pomona,91769,909-949-0059,Donald Warburg
WA6HNC

Dan Hogan
    [e-mail]


From [e-mail] Mon Jul 01 12:26:00 1996
Newsgroups: sci.electronics.components,rec.radio.amateur.homebrew
From: [e-mail] (Jeff Albom)
Subject: Looking for IEEE488/GPIB controller board/chip
Message-ID: <[e-mail]>
Date: Fri, 28 Jun 1996 20:57:34 GMT

Are there any vendors of IEEE488 pcb modules or chips that can be used to give
 a
piece of equipment GPIB talk/listen capability? The equipment has to be
standalone (not tied to a PC or controller box) so a PC plug-in card w/ contro
l
wires to the instrument won't do.

Thanks in advance for any info.

[e-mail]



From [e-mail] Mon Jul 01 12:26:01 1996
From: William W Janssen <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Microwave Antennas
Date: 29 Jun 1996 04:19:33 GMT
Message-ID: <4r2asl$[e-mail]>
References: <4qsft4$[e-mail]> <4qv3o8$[e-mail]>

[e-mail] (Rod Lane) wrote:
>>I have two mirowave antennas and radomes that I picked up surplus..
>>
>>They are Andrew 48" Diameter dishes and have the markings 47017 and
>>TM0057.  Can anyone tell me what freq these are for and if they are
>>worth keeping around..  Any Idea for projects?
>>
>>Please E-Mail me with replies, Bill N0MKJ
>>
>>[e-mail]
>>www.execpc.com/~wrupp
>
>A dish is a dish is a dish.
>
>Depends on what you feed it with.  There are formulas to calculate gain
>vs. frequency of parabolic reflectors.   They'd work GREAT at 10.5 GHz,
>but you could just as well use them all the way down to audio frequencies.
>  Put your ear in the focal point and you'll be amazed at what you can
>hear at great distances.
>

Well not quite. The accuracy of the surface may not give the gain
you would expect from looking at the size.

The feed has to be designed to match the dish and some dishes are
easier to design for than others.

Otherwise YEP a dish is a dish.

Bill K7NOM



From [e-mail] Mon Jul 01 12:26:02 1996
From: "Ian White, G3SEK" <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Finding permeability of Toroids
Date: Sat, 29 Jun 1996 08:21:53 +0100
Distribution: world
Message-ID: <[e-mail]>
References: <[e-mail]>

W8JI  Tom wrote:
>In article <[e-mail]>, "Ian White, G3SEK"
><[e-mail]> writes:
>
>>Rather well, it seems.
>>
>>G0SNO (RSGB EMC committee) has measured the performance of 14 turns on a
>>yoke core with 29mm inside diameter. The inductance measured at low
>>frequencies was about 70uH. In a 50ohm system the common-mode
>>attenuation peaked to 34dB at 20MHz, and was >20dB from 2-65MHz.
>>
>>Out of all the branded ferrite rings and clip-on cores he tested, with
>>the numbers of turns optimized to cover the higher HF bands, none of
>>them was more than 6dB better than the yoke core from 1.8-50MHz.
>>And the yoke core was the only one big enough to take large power cable
>>or coax.
>
>Perhaps it's because of the waveshape? The yoke must respond to the very
>fast falling edge of the sawtooth? What think ye?

 ...so the designers use a higher-frequency grade of ferrite than the
simple timebase frequency would suggest? I have no idea! Point is, at
least some of the yoke cores seem to work well, so any one that you can
catch would be worth trying.

The broadband performance seems to depend on using the optimum number of
turns: enough to create the common-mode impedance, but not so many that
self-capacitance spoils the performance at the HF end of the range.
Judging from G0SNO's extensive measurements, "As many turns as
opossible" is definitely NOT the right answer.

Presumably Tom's testing method with the coaxial T-piece and a light
bulb would be applicable. (I'd try it today, but the whole workbench is
covered with another project :-)

73 from Ian G3SEK          Editor, 'The VHF/UHF DX Book'
                          'In Practice' columnist for RadCom (RSGB)
Professionally:
IFW Technical Services     Clear technical English - world-wide.


From [e-mail] Mon Jul 01 12:26:04 1996
From: Rich Griffiths <[e-mail]>
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Plausibility of constructing a decent SWL receiver?
Date: Sat, 29 Jun 1996 09:23:13 -0400
Message-ID: <[e-mail]>
References: <4qppbe$[e-mail]>

Alan Holloway wrote:
>
> Hi Everyone,
>
> I'm not a ham, but I figured you guys would know the answer to some of
> my questions.  Is it worthwhile to construct a 3-30 MHz receiver
> comparable to, say, a Drake SW-8?  By worthwhile, I mean can I get
> schematics, parts, etc., for substantially less than a commercial
> unit?  I realize this is a hopelessly open-ended question since I
> haven't given any indication of digital vs. analog signal conversion,
> what sort and number of filters desired, you name it.  But I'm just
> testing the waters, just in case building my own is preferable to
> buying a receiver off the shelf.
>
> Thanks,
>
> Alan

If "comparable to" means having the same stability, selectivity, nice case,
nice knobs, etc., then I think the answer is NO, you can't do it for
substantially less.  In fact, unless your a persistent and skilled scrounger,
it would probably cost you more than the commercial model.

However, you CAN build a pretty nice receiver for about half the cost of the
Drake, but then again so do Sony, Panasonic, Grundig, Sangeaen, ....

One reasonably cheap route I took about ten years ago was to convert an
all-tube general-coverage receiver to transistors and ICs (a sacreligious act
to some, I suppose).  It was fun, easy, educational, and cheap, and it left
me with a pretty good quality SWL receiver.


Rich Griffiths                 W2RG


From [e-mail] Mon Jul 01 12:26:05 1996
From: [e-mail] (Stephen Ratzlaff)
Newsgroups: rec.radio.amateur.homebrew
Subject: Re: Plausibility of constructing a decent SWL receiver?
Date: 29 Jun 1996 17:11:12 GMT
Message-ID: <[e-mail]>
References: <4qppbe$[e-mail]>

In article <4qppbe$[e-mail]>, [e-mail]
(Alan Holloway) wrote:

>Hi Everyone,
>
>I'm not a ham, but I figured you guys would know the answer to some of
>my questions.  Is it worthwhile to construct a 3-30 MHz receiver
>comparable to, say, a Drake SW-8?  By worthwhile, I mean can I get
>schematics, parts, etc., for substantially less than a commercial
>unit?  I realize this is a hopelessly open-ended question since I
>haven't given any indication of digital vs. analog signal conversion,
>what sort and number of filters desired, you name it.  But I'm just
>testing the waters, just in case building my own is preferable to
>buying a receiver off the shelf.
>
>Thanks,
>
>Alan
Everyone has an opinion; I'll give mine. Given enough time and persistence
you can build a decent receiver but you will never equal the commercial
receivers' bells and whistles, conveniences and packaging that you find in
say, a portable Sony ICF-2010, or an Icom R-71 or Drake R8A. You could
design a single-band analog VFO receiver for AM SWBC use, but to add a
synchronous detector for enhanced reception would greatly complicate the
design. If you wanted CW/SSB reception, that would add more circuitry.
Don't even think about designing a digital PLL for multiband reception
unless you're willing to devote lots of time just to that one section of
the radio. My advice is to buy a used radio like the Icom R-71 or Drake
R8, use it for several months, then if you're still interested in
designing your own, go at it. It'll take you at least a year to put
together a homebrew radio, and during that time you will have the
enjoyment of a commercial rig. Then, if you lose interest, you'll still
have a radio to listen to!
Steve


From [e-mail] Mon Jul 01 12:26:06 1996
From: [e-mail] (Ed Mitchell)
Newsgroups: rec.radio.amateur.misc,rec.radio.amateur.digital.misc,rec.radio.amateur.policy,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.scanner,rec.radio.shortwave
Subject: Ham Radio Online - June and July 1996
Date: 29 Jun 1996 21:29:45 GMT
Message-ID: <4r4789$[e-mail]>

For June, we've run over a dozen articles and we already have at least that
many in the queue for July. Stop on by and enjoy some good clean ham radio fun
at Ham Radio Online. Always free at
http://www.accessone.com/~vbook/hronline.htm

(and if that is a mouthful of a URL, we will soon be introducing a much easier
URL to remember!)

Original articles, newsletters from throughout the world of amateur radio,
free unclassified ads, real-time radio propagation and auroral conditions,
real-time disaster communication information and so much more.

Have fun!

Tnx and 73,
Ed

------------------------
Ed (KF7VY) and Kim (N7VPL) Mitchell
personal email to [e-mail]
Visit Ham Radio Online, it's free! at
http://www.accessone.com/~vbook/hronline.htm



From [e-mail] Mon Jul 01 12:26:07 1996
From: [e-mail] (Peter Gerba)
Newsgroups: rec.radio.amateur.homebrew
Subject: FS Bolometers
Date: 29 Jun 1996 23:24:53 -0700
Message-ID: <4r56jl$[e-mail]>

General Microwave MX-2144 $35, HP 477B $35, HP 8478B $225 .. add packing
and shipping costs. I have several of each of these tested heads.

pete
[e-mail]



From [e-mail] Mon Jul 01 12:26:08 1996
From: [e-mail] (RKoblish)
Newsgroups: rec.radio.amateur.homebrew
Subject: Wanted: Kenwood TM631A remote control info
Date: 30 Jun 1996 00:35:55 -0400
Message-ID: <4r507b$[e-mail]>
Reply-To: [e-mail] (RKoblish)

Can anyone tell me the protocol for controlling the TM621/721 remotely via
the mic connector?  I know KW used to sell a remote ctrl accessory that
looked like a cellphone handset.  I believe that that device connected to
the mic connector and gave you full control over the radio.

No specific application yet, but some ideas:
1. remote base
2. hide the radio in the car and build an ugly-yet-functional remote
control so the thieves don't get ideas.
3. computer control, more memories or whatever.

BTW, Kenwood's website was useless on older gear.  They do have service
bulletins in .jpg format on their ftp server, though.

tnx,
Bob N3HAT


From [e-mail] Mon Jul 01 12:26:09 1996
Newsgroups: rec.radio.amateur.homebrew
From: [e-mail] (ANaRcHyU)
Subject: Need help in building a 2 M mobil antenna
Message-ID: <[e-mail]>
Date: Sun, 30 Jun 1996 05:15:18 GMT

Howdy..

I want to build my own 2 meter antenna for my handheld radio which i
will be using in my truck..  I am on a extremly tight budget ( i mean
i have like 20 bucks i can spend) i have a bunch of connectors and
such that i have from a antenna i made that plugs right onto my radio
and that works great, but doesnt work great when i am driving.  I have
a large rectangular magnet (which i can cut to size) for making it
magnet mountible.  If anyone has an IDEA or drawing or something they
can send me that may help, PLEASE e-mail me at [e-mail] and
tell me!!

I also have a supply (60 feet or so) of 12 gauge copper house wire
(new never used) if that would work for part of the antenna.

Thanx for any help you can give!!

Brad

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