QRZ! Ham Radio 5/QRZ Ham Radio Callsign Database - Volume 5.iso/digests/infoham/940861.txt

Internet Message Format | 1994-11-13 | 24.3 KB

Date: Sun, 31 Jul 94 23:41:14 PDT
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Info-Hams Digest            Sun, 31 Jul 94       Volume 94 : Issue  861

Today's Topics:
                           (none) (9 msgs)
                            Ampr/Internet
                        Persieds Meteor shower
                            Ramsey SlyFox
                      What to do with old OST's

Send Replies or notes for publication to: <[e-mail]>
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Problems you can't solve otherwise to [e-mail].

Archives of past issues of the Info-Hams Digest are available
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We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party.  Your mileage may vary.  So there.
----------------------------------------------------------------------

Date: Sun, 31 Jul 1994 15:08:40 GMT
From: utcsri!helios.physics.utoronto.ca!NorthNet.org![e-mail]
Subject: (none)
To: [e-mail]



------------------------------

Date: Sun, 31 Jul 1994 15:09:34 GMT
From: utcsri!helios.physics.utoronto.ca!NorthNet.org![e-mail]
Subject: (none)
To: [e-mail]

Hi all,

Our school is interested in creating some detailed maps of the forest in
our area.  The maps will be used for orienteering (kind of like cross
country running through the woods, using a map and a compass to locate
checkpoints)  They need to show fairly small details, and I wonder what
kind of results we could get with simple RDF equipment.

Here's what I'm thinking of using:

Three simple, crystal controlled, low-power (solar?) transmitters located
at well-known places on the perimeter of the course.  A moveable receiver
with a directional antenna, used to find a bearing to each beacon.  To
locate boulders, downed trees, mudholes and other relatively small features
someone would go to them, find the bearing to all three beacons, and later
locate the features on a master map by triangulation.  I thought maybe a
digitized signal-strength value might be a good way to determine the right
bearings.  (I have some suitable A/D hardware for this already.)

The questions are: (not necessarily in the right order :-)

1.  Are there schematics, or better yet PCB artwork for the above tx/rx ?
2.  What frequency is generally used for this purpose?
3.  Most importantly, how accurate can the results be with a fairly modest
    outlay of funds for construction?

I'd like to enlist the Science Club in building the equipment, so circuits
designed around microcontrollers might be a bit _too_ complex!  If there
is ftp-able info on this subject, I would greatly appreciate hearing about
it.  I don't have access to indices of QST or 73, but if there have been
articles about such equipment I could probably locate the magazines.

Thanks in advance to all who respond,

Pat Ferrick
Science Teacher, Town of Webb School
Old FOrge, NY

(using K. Down's account temporarily)

ps- we'll also need some mapmaking software eventually, if you know of any
(preferably public) sources by all means let me know!

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Date: 1 Aug 94 02:23:38 GMT
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Date: 1 Aug 94 06:14:00 GMT
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Date: 31 Jul 1994 03:31:23 GMT
From: ihnp4.ucsd.edu!agate!howland.reston.ans.net!europa.eng.gtefsd.com!newsxfer.itd.umich.edu!montego!condor.ic.net!grex.cyberspace.org![e-mail]
Subject: Ampr/Internet
To: [e-mail]

The site in Detroit (hamgate.merit.edu), is available just by telneting to
it, however, you need to have the new user password.

I can't give out the password, but write e-mail to either [e-mail]
for it.

--------------------------------------------------------------------------
Nicholas McLarty, KB8RBF/5      [e-mail]      [e-mail]
Waterford, Michigan             Grex Cyberspace         WB8TKL Hamgate

For public key, finger [e-mail] or e-mail me at an address above

PGP Fingerprint   C8 8D 9A D6 E2 7A BE 61  63 D5 11 6B 5F AC 7E 2B

------------------------------

Date: Sun, 31 Jul 94 19:30:00 -0800
From: iat.holonet.net!megasys![e-mail]
Subject: Persieds Meteor shower
To: [e-mail]

Hello fellow VHFers... I, NC7K, will be QRV from DM19 and DM09 in the
upcoming Persieds Meteor shower. Primarily looking for 2M skeds, But I
will have 50 and 432 Mhz with me as well. Leaving work Mid day Tuesday
August 9th Im driving out to a 10,000 Ft. mtn above Austin, NV in DM19.
QRV from 03:00Z 8/10 thru 22:00Z 8/11. Then I'll move back to 8,300 FT.
Virginia Peak in DM09 where I'll be QRV from 04:00Z 8/12 thru 01:00Z
8/15.
.
QRZ SKEDS... QRZ SKEDS... QRZ SKEDS...
.
Throughout all this I will be QRV 3.818 Nites and 14.345 Days for HF
liason. I will take skeds via UseNet, [phone] Days, [phone]
Nights till 8/8/94.  73s es GL. Tim - NC7K...sk

------------------------------

Date: Sun, 31 Jul 94 07:37:27 PDT
From: portal.com!portal!cup.portal.com![e-mail]
Subject: Ramsey SlyFox
To: [e-mail]

Wow, my SlyFox review was one of the most controversial columns I've written
in almost 6 years with 73 Magazine!  Between the comments here and the ones
I got at the swap meet today, it's clear that almost everybody disagreed.
Half thought I was too hard on Ramsey and the other half thought I wasn't
tough enough.  Nobody was in the middle.  The opinions expressed in this
newsgroup are interesting, but it appears that none of the posters have
actually built this kit.  If any have, please tell me your own
experiences---i'm interested.

A couple of posts require corrections:

7/25/94 33/1735 [e-mail] (Cecil A Moore) writes:
>It is a sad day in ham radio when kit-builders complain that they
>shouldn't have to pinch or spread coils that they had to wind for a kit.
>If you can't achieve resonance in a final by adjusting the capacitor,
>then you must adjust the coil... an extremely simple concept. Should a
>kit manual also be required to teach the physics that hams are supposed
>to know in order to pass their ham tests?

There was no such complaint.  Not every ham is savvy about RF, and it's
important to keep the novice builder in mind when reviewing a kit.

In the SlyFox manual, the transmitter tuneup first peaks the two triplers,
using two test points.  Then there are only two steps that instruct the
builder how to tune the final stage.  I hope Mr. Ramsey will not mind if I
quote them:

"9.  You should now be able to see RF power at the output antenna jack, J1.
Adjust capacitor C12 for maximum RF power output.  Connect your voltmeter to
TP3 and peak for maximum DC voltage.

10.  Slightly spread or compress coils L3 and L7 to maximize output power.
Power should be at least 4 watts with a 12 volt power source."

That's it, folks.  The next step calls for a check of power in the low power
position.  By the way, there is no mention of a wattmeter in the first five
steps of the testing section, which list the items necessary for tuning.

The important point is that there is nothing in any step anywhere in the
manual to tell the builder to make any adjustments to L2 and L4 after they
are installed.  Cecil, I did achieve a nice "resonant" peak on the capacitor
when I followed Ramsey's directions.  In other words, everything appeared to
be fine, on the surface.  Anyone building the kit and using the suggested
light bulb load would have seen plenty of brilliance.  But the kit had low
power and high harmonics that way, which the novice builder would have been
unaware of.

7/27/94 42/1700 [e-mail] writes:
>Looks as if the guy who wrote the article in 73 didn't bother
>to read the manual just like you didn't bother to read the followups.

Not so---see above.  The manual was followed exactly.  I probably would have
found the problem sooner except that the other problem (low tripler test
point voltages) led me to concentrate my efforts on the triplers instead of
the final.  (If that sentence doesn't make sense, read my article for the
details.)

7/26/94 8/346 [e-mail] writes:
>Cecil, The manual clearly states to spread the coils for max power output.
>We purposely have the coils wound with a 'tad' too much inductance - it's
>easier to spread the coils a bit than to have to add more turns!

Not exactly correct, as can be seen from above.  The manual instructs tuning
of L3 and L7, but not L2 and L4.

Joe Moell  K0OV
[e-mail]

------------------------------

Date: Sat, 30 Jul 1994 04:55:03 GMT
From: news.Hawaii.Edu!kahuna![e-mail]
Subject: What to do with old OST's
To: [e-mail]

In article <[e-mail]> [e-mail] (James A. Robbins) writes:
>Just a quick request. Are old QSTs worth anything? I'm looking to get rid
>of a LARGE number of old ones (been a life member since the early 1970's)
>Should I try to sell them, give them to a library, or just toss them out?
>Thanks in advance.

Please please please donate them to a library that will recognize
their worth, and not toss them out after a few years. Or, find a
ham club in your area that will take care of them and make them
available to members.

Jeff NH6IL
[e-mail]

------------------------------

Date: 31 Jul 1994 16:36:39 -0400
From: news2.new-york.net!starcomm.overleaf.com![e-mail]
To: [e-mail]

References <319m02$[e-mail]>, <319onr$[e-mail]>, <[e-mail]>r-mail
Subject : Re: REQUEST: Help finding WWV receiver!

Peter Monta ([e-mail]) wrote:

: There was someone who would occasionally post a "CHU preach"
: on comp.protocols.time.ntp extolling the virtues of transmitting
: time-code during seconds 31--39 in Bell 103 format, i.e., the
: 300 bps modem format.  An FSK receiver and some trivial glue
: gets you a box with RS-232 time output.  If you've already got
: a radio, that's very low-cost time at roughly millisecond accuracy.
: (Loran or GPS, though, at ~100 ns, is a *big* step up.)

   Heathkit (Ahh, the memories come back...) used to have "The Most
Accurate Clock" which would auto-lock to the strongest out of 5, 10
and 15Mhz and had an optional RS-232 output.

   I also remember seeing an ISA PC board setup, but much more
expensive ($500). I don't remember who made it.

   Anyone seen products in this catagory?

------------------------------

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Info-Hams Digest            Fri, 29 Jul 94       Volume 94 : Issue  853

Today's Topics:
                              15mW QSO's
                    6 Meters-New op needs advice.
           AT&T's EO Inc. Disaster - Opportunity for Hams?
                           Call Sign Server
                        Contest mailing list?
                      Converting a CB to a 10M?
                    Did someone say . . . bolus ?
                            Glass antenna
                       Hams from GSFC Ham CLub
                      Help with Jupiter signals
                       May 1994 Callsign Update
                             Note to all
             REQUEST: Help finding WWV receiver! (2 msgs)
                  WANTED:Progrm to run Yaesu FT757gx
                         Whence QST (3 msgs)

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------------------------------

Date: Sun, 31 Jul 1994 13:47:45 GMT
From: news.sprintlink.net!news.dorsai.org![e-mail]
To: [e-mail]

References <3161lg$[e-mail]>, <31bko8$[e-mail]>, <[e-mail]>ors
Subject : Re: Thanks for the Help

In article <[e-mail]>, [e-mail] (Chuck Forsberg WA7KGX) wrote:
> In article <31bko8$[e-mail]> [e-mail] writes:
> >Again it was frustrating to me that you have to spend so much for
> >what used to cost about $30.00 with the weather band included. But
>
> My Realistic TIMEKUBE does not include a weather band, nor does
> it include 2.5 or 20 mHz, let aline CHU.  Its discontinuance is
> no great loss.

I do remember that RS did have a combo WWV/Weather cube, but it only lasted
one catalog.  This was about 15 to 20 years ago.  Whenever RS comes up with
something realy inovative that some of us can use, it isn't around for
long, like their AM Stereo car radio, "Silent Play", a real multimode
timer, etc.

--
 < ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^>
 <                         "Big Steve" Coletti                         >
 <         Shortwave Listener, Broadcaster, Computer Consultant        >
 <                      and all around nice guy                        >
 < Internet: [e-mail] ==== [e-mail] >
 <   UUCP: [e-mail] ==== [e-mail]   >
 <    Fidonet: 1:278/307  US Mail: P.O. Box 396, New York, NY 10002    >
 <                        Voice: [phone]                       >
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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Info-Hams Digest            Sat, 30 Jul 94       Volume 94 : Issue  858

Today's Topics:
               Extended Transceive For FT-470 (2 msgs)
                      GB2RS News 31st July 1994
                      Help with Jupiter signals
                            Kenwood Repair
                       Lightbulb's as antennas?
                   repeaters in the microwave bands
                 REQUEST: Help finding WWV receiver!
                 Simulcasting repeaters on same freq
                     Telford Amateur Radio Rally
                Thanks for the Help (was: WWV request
                    WANTED-MAST MOUNT 4 HD73 ROTOR
                      What to do with old OST's

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Info-Hams Digest            Fri, 29 Jul 94       Volume 94 : Issue  855

Today's Topics:
                       * SpaceNews 01-Aug-94 *
                              15mW QSO's
                      6 Meters-New op needs ad
                      antenna question (2 msgs)
                        Contest mailing list?
                       Lightbulb's as antennas?
                         orbs$210.misc.amsat
                         orbs$210.oscar.amsat
                 REQUEST: Help finding WWV receiver!
                 RFI from Heath "Big Ben" Chime Clock
                Thanks for the Help (was: WWV request
                  Voltage of rechargeable 9V NiCd's?

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Info-Hams Digest            Sat, 30 Jul 94       Volume 94 : Issue  857

Today's Topics:
                         15mW QSO's (2 msgs)
                    6 Meters-New op needs advice.
                      Call Sign Server (3 msgs)
                        Callsigns via e-mail?
                            GB0SNF..ooops
                              ham humor
                      Info-Hams Digest V94 #843
                      Model rocket telemetry...
                             Note to all
                     PA3CXC/ST0 QSL Card (2 msgs)
                            Ramsey SlyFox
                   repeaters in the microwave bands
                 Simulcasting repeaters on same freq

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Info-Hams Digest            Fri, 29 Jul 94       Volume 94 : Issue  854

Today's Topics:
                      Advice for an aspiring ham
                      Call Sign Server (2 msgs)
          Computer radio - SoftWave by ComFocus - any good?
                    Extended Transceive For FT-470
                            FCC Address??
                         Good day to you all
                      Help with Jupiter signals
                       Lightbulb's as antennas?
                         PA3CXC/ST0 QSL Card
               VHF TV freqs to be phased out? (2 msgs)
                  WANT: KW TS-430S filters/FM board
                              Whence QST

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Info-Hams Digest            Sat, 30 Jul 94       Volume 94 : Issue  856

Today's Topics:
                          CHICAGO HAM RADIO!
          Computer radio - SoftWave by ComFocus - any good?
                                GB0SNF
                        Need advice on towers
                          orbs$210.2l.amsat
                         orbs$210.micro.amsat
                         orbs$210.weath.amsat
                      Wanted, Kenwood RZ-1 mods

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Archives of past issues of the Info-Hams Digest are available
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We trust that readers are intelligent enough to realize that all text
herein consists of personal comments and does not represent the official
policies or positions of any party.  Your mileage may vary.  So there.
----------------------------------------------------------------------

------------------------------

End of Info-Hams Digest V94 #861
******************************