QRZ! Ham Radio 4/QRZ Ham Radio Callsign Database - Volume 4.iso/files/qrp/archives/94_02_05.txt

Text File | 1994-11-27 | 216KB | 5,457 lines

Subject: Start
From [e-mail]  Sat Jan 22 01:26:09 1994
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    id AA02668; Fri, 21 Jan 94 20:26:02 HST
    id AA24080; Fri, 21 Jan 94 20:25:52 HST
Date: Fri, 21 Jan 94 20:25:51 HST
From: Jeff Herman <[e-mail]>
To: [e-mail]
Subject: PROJECT 14: THE WORLD'S SMALLEST TRANSMITTER
Message-Id: <[e-mail]>

Gang,
   If there was a contest to come up with a xmtr containing as few
parts as possible, this would be the winner: 10 parts if you include
the key, battery, and antenna!
   In the CODE/NO-CODE debate on r.r.a.policy some pro-coders will
mention the simplicity of CW xmtrs as opposed to those of other modes;
this circuit really drives that point home (that's why I'm posting this
on .policy)
   On r.r.a.misc we've heard talk about how costly ham gear is today - all
this rig will cost you is the effort to find an old color TV chassis -
that's the parts source for all my QRP transmitters (and this is why I'm
also posting this on .misc).
   Normally I post these xmtrs only on r.r.a.homebrew and on the QRP
mailgroup; so if you've missed the first dozen xmtr circuits email me
and I'll send them off to you.
   I built this for 80M only because I've got so many 3579 kHz crystals
from old TV sets, but this can be used on any HF band - just choose
L and C to resonant at the crystal frequency.
   For peace of mind you might want to add a bandpass filter to the
output.


--------------------------------*---------*--------*----||---ANT
|                               |         |        |   10pf
|                               |         |        |
-                               |         )       ---
XTAL                            |         )       --- C
-                               |         ) L      |
|                            | / c        )        |
*----------------------------|/           |        |
|                         b  |\           |        |
|                  2N2188      \ e        *---------
/                or any PNP     |         |
\ 100K           that'll work   |         |
/                              GND        |
\                                         |
|                                         |
*-----------------------------------------*
|                                         |
|                                         |
|                                        ---
|                                        --- .01uf
|                                         |
---------*KEY*----*1 to 4 volts +*--------*
                                          |
                                          |
                                         GND

Again, choose L&C to resonant at the desired frequency; one of the two
should be adjustable. I got both from the chromatic board of a TV -
both were sitting next to the 3579 kc xtal; easy, huh? I didn't use
a 2N2188 transistor; rather, I used a x-sistor right off the video
board (of the TV).
So, don't you dare buy one component for this - just dig through your
junk box (or your neighbor's trash for an old TV). With a good antenna
(those are the magic words in QRP work) this little peanut-whistle
will provide hours of pleasurable QSO's.
Oh, 3579 kc has become a national QRP frequency due to the easy avail-
ability of these crystals.

....  .-  ...-  .    ..-.  ..-  -.

72,
Jeff NH6IL

From [e-mail]  Sat Jan 22 02:17:13 1994
Return-Path: <[e-mail]>
    id AA05375; Fri, 21 Jan 94 21:17:05 HST
Date: Fri, 21 Jan 94 21:17:05 HST
From: Jeff Herman <[e-mail]>
To: [e-mail]
Subject: CB XTALS
Message-Id: <[e-mail]>

Gang,
   If you can get your hands on an older CB radio that uses crystal-mixing
for the frequency synthesis you'll find one of the xtals is 10.140 MHz -
the top of the 30 meter band!
   Maybe we should start a list as to what electronic gear contains xtals
that fall in the ham bands. The most famous item on this list would be a
color TV: the 3579 kc xtal. Randy mentioned you'll find this xtal in
some touch-tone telephones.
   Now what might have a 7040 kc xtal.....

Jeff NH6IL  

From [e-mail]  Sat Jan 22 02:54:58 1994
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    id m0pNd9M-0001YvC; Sat, 22 Jan 94 02:52 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: Re: PROJECT 14: THE WORLD'S SMALLEST TRANSMITTER
To: [e-mail] (Jeff Herman)
Date: Sat, 22 Jan 1994 02:52:55 -0500 (EST)
Cc: [e-mail] (qrp @think.com)
In-Reply-To: <[e-mail]> from "Jeff Herman" at Jan 21, 94 08:25:51 pm
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Content-Length: 924

HA! Far out!  all but the key and the battery...right outa the tv.
( in fact...take apart the yolk and theres the wire for the ant)

Colour TV's have in essesence 4 vidio amps ...which have transistors that
will operate up beyond 4 mc ( probably fall off around 6-7mc)
These ususally run on 60volts at 5ma, due to a resistor feeding the collector
from a supply of up to  125vdc.

So...having a 25vdc supply, and run them no heavier than say 20ma, you have a
bit more power.

Use 3   9 volt batteries in series.

I have a fairly New NTE cat here..so gimmmme some numbers (anyone) and I'll
look up the sub-specs ...get an idea what transistor may be good for.
--
Randy KA1UNW              If you get a shock while
                         servicing  your  equipment,         "Works for me!"
randy@192.153.4.200             DON'T  JUMP!                     -Pete Keyes
                     You might break an expensive tube!

From [e-mail]  Sat Jan 22 13:17:54 1994
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    Sat, 22 Jan 94 13:17 EST for Think.COM!qrp
    id m0pNmqL-0000xrC; Sat, 22 Jan 94 13:13 EST
Message-Id: <[e-mail]>
From: [e-mail] (Andrew Sargent N8OFS)
Subject: Re: CB XTALS
To: [e-mail] (Jeff Herman)
Date: Sat, 22 Jan 1994 13:13:57 -0500 (EST)
Cc: [e-mail] (QRP)
In-Reply-To: <[e-mail]> from "Jeff Herman" at Jan 21, 94 09:17:05 pm
Reply-To: [e-mail]
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> Date: Fri, 21 Jan 94 21:17:05 HST
> From: Jeff Herman <[e-mail]>
> To: [e-mail]
> Subject: CB XTALS
> Message-Id: <[e-mail]>
> Content-Type: text
>
> Gang,
>    If you can get your hands on an older CB radio that uses crystal-mixing
> for the frequency synthesis you'll find one of the xtals is 10.140 MHz -
> the top of the 30 meter band!
>    Maybe we should start a list as to what electronic gear contains xtals
> that fall in the ham bands. The most famous item on this list would be a
> color TV: the 3579 kc xtal. Randy mentioned you'll find this xtal in
> some touch-tone telephones.
>    Now what might have a 7040 kc xtal.....
>
> Jeff NH6IL  
>
Well, I'm probably going to become flame-bait here, but I'll speak
anyway.  I have a @#$%load of those rocks from 23CH CB's  (I was a
rather ambitious CB'er at one time).  Here is a list of what I have
in the 10MHz range:  {10.14  10.16  10.17  10.18  10.595  10.615
10.625  10.635}.  Look for _any_ 23CH CB, and you will find 10MHz
rocks of one kind or another.  BTW, the old imported Sinclair
computers used a colorburst xtal for the clock.  Or, rip appart
some TT-phones for colorburst xtals.

So long for now...  (asbestos lined underware zipped)

--
Mesmerized by a decade of hate,           ! AMATEUR =   N8OFS
Flowers and remorse,                      ! ARMY MARS = AAN5HJT
Fading vision lost in time,               ! CB =        THE NEON KNIGHT
Tragedy on course!!! - Frontline Assembly ! HACKER =    TH3 N30N KN16Ht

From [e-mail]  Sat Jan 22 16:40:13 1994
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    (queueing-rmail) id 163815.8813; Sat, 22 Jan 1994 16:38:15 EST
    id AA06613; Sat, 22 Jan 94 15:53:29 EST
Date: Sat, 22 Jan 94 15:53:29 EST
From: [e-mail] (Edward Pacyna)
Message-Id: <[e-mail]>
To: uunet!Think.COM![e-mail]
Subject: Re: RadioKit Review
Cc: [e-mail]


I have built nearly a dozen of these transceivers, so here is my 2 cents.

First of all, I can not comment on the parts quality, as I furnish my own
parts (expect for the air variable which I do buy from RadioKit).

I buy the boards direct from FAR Circuits, the same source that RadioKit
gets them. There are two versions, one from HR January 89 called NE602
QRP CW 20M transceiver sells for $8, and the other from CQ September 90
called QRP 15 transceiver and sells for $12. The earlier version had two
COHN XTAL filters (one on each side of the IF amp. to develop 8 poles of
selectivity and reduce board band noise) and a doublely tuned band pass
filter in front of the RX mixer. The later has only a single tuned cir-
cuit in front of the mixer, a 4 pole Chebyshev XTAL filter and adds RIT.
Both versions include 2 stages of active AF filtering after the product
detector, AGC and can easily be put on any band by changing the VFO and
XTAL filter frequencies.

Regarding the PCB boards:

As mentioned, they are not silk screened with the component shape and
Actually, I prefer this as it makes for a nicer looking finished product.
Most builders should have no problem just following the parts placement
diagram. However, a paint by the numbers approach might make it easier
for some. The boards are very well laid out with a lot nice ground plane
(pads are lined up and logical), however the later version does come
with a couple of pads missing drilled holes). None of the 50 or so boards
I've goten from FAR were soder masked (including the NN1G board set).
The usually good soder plate by FAR takes soder very nicely. It is always
good pratice to lightly clean any PCB with Comet before beginning. The
board is very compact 4"W x 3"D (25% smaller than the NN1G board set and
contains more circuitry e.g. RIT, active filter, AGC). With a higher part
density, sodering does take a little more skill. Also, use only a low
wattage iron with a point tip and a good quality thin soder. Those over
40 like myself, might be more comfortable with the magnifying eye glasses
as sold in drug stores. I have been able to unsoder and remove parts over
and over with a little care (I make lots of modifications along the way).

Regarding the schematic:

I recall that both the schematic and parts placement diagrams being correct.
The problem is that they are sightly different. The difference is fairly
minor and as long as you didn't get your license by memorizing the answers,
should not be to difficult to resolve. I recall having to install one part
on the soder side of the board. Pin 4 on the NE602 product detector needs
to have a bypass capacitor on it (since it is unused and has RF floating on
it). This is shown on both diagrams.

Regarding the tuning capacitor:

This is a very nice capacitor and I sometimes buy them from RadioKit. It has
a silky smooth built in 7:1 reduction drive and is 5 - 55pF.  The frequency
vs shaft tuning is exceptionally linear. The plate spaceing is perhaps a bit
wider than the broadcast band variables of yesterday. The stability is excell-
ent. If it got shipped with the plates unmeshed or dropped on the floor, a
rotor plate could bend.

Possible modifications:

The circuit works well as is. The RIT version is nice because the station your
working made be using the opposite sideband or drift. The T/R switching is
semi-breakin and as MFJ states in their ads "silky smooth". By the way, this
circuit is the same as used in the MFJ 90XX. Full QSK is nice if its used
(but I find few that do).

I usually run my radios from a 13.8V regulated power source (and believe most
others do). The on board 12V regulator is uneccessary and reduces overall RX
gain. It would also be a good idea to insall some reverse polarity protection
to protect your labor of love. A power diode in series with the power supply
feed is simple (reduces voltage by about .7V) or install a series fuse in the
line with a shunt power diode on the radio side of the fuse (cathode to fuse,

The AGC is a mixed blessing. It is audio derived and pops on strong signals.
I don't like any AGC on CW. First of all, if a strong signal is nearby, it
reduces the RX gain making it more difficult to receive the weak signal and
the usually pumping action is unpleasant. In a simular fashion, it reduces
the opposite sideband surpression that your XTAL filter provides). On the
other hand it reduces the signals dumped into the product detector. This is
a weakness in the NN1G design. The NE602A is a wonderful device provided it's
used correctly. Due to it's gain, the input intercept is -15dBM or so. If you
give it more signal than it's meant to handle, you get a lot of IMD product.
By the way, one nice feature of this design is that the VFO is buffered and
has an adjustable pot allowing you to control the TX mixer drive and thereby
reduce IMD products. On the receive side, I control the IF gain with a front
panel pot on RX (use AGC for TX monitoring only). I do not install the volume
control (it's kind of hockey installed on the AF power amp. anyway). You will
have a much beter receiver with this approach.

I always use IC sockets when I build. Use only low profile machined sockets
(the ones that have round holes for the IC pins). There has recently been some
discussion of NE602's oscillating (e.g. NN1G Marc II) when sockets are used.
Although NE602's do have alot of gain up into VHF, oscillations are usually
due to poor circuit layout or improper decoupling. As shown in the data sheet,
the NE602 supply voltage sould be decoupled with a 5uH choke and bypassed at
all frequencies with multiple bypass capacitors (e.g. .1uF, .001uF etc.). I
usually use a 100 ohm resistor with a ferite bead for the choke. Also since
maximum supply voltage is 8 volts and the best noise figure is at 6 volts, I
use 6 volts (78L06 regulators). The advantage of sockets is that it makes the
radio very easy to debug and or repair. If you have a problem, remove the IC
so it doesn't load the circuit and using a multimeter make measurements to
easily find soder bridges, components installed incorrectly etc.. I always
build my radios backwards. For example in a RX start at the output and build
toward the input (reverse in a TX). Just build the audio output stage and
test it before you go on. You'll never have to deal with more than a few
parts or 1 error at a time. Its easy to test stage by stage without a lot
of fancy equipment too. After you build the audio amp., put your finger on
the input. You should hear a buzz. Next build the product detector. You will
hear a hiss if all is well (or you actually now have a DC receiver and so
connect an antenna and your might hear some signals as you tune the BFO cap.).
Next build the IF amp. and the signals you heard before should be louder etc..

The other two changes I usually make to this radio are to change the VFO
circuit to a series tuned config. (for lower noise) and stagger tune the AF
active filter. With a little thought, the series circuit will fit on the same
PCB pads provided. Most active filters simply repeat the same stages N times
(e.g. same Q, frequency etc.). What you get is a very sharp needle nose
response that rings and is not very useful. With stagger tuning, the Q,
center frequency and gain is changed to get a bandpass response instead.
Different bandpass shapes can be synthesized (e.g. Butterworth, Chebyshev
etc.) with superior skirts. The circuit is exactly the same, only the R,C
values change. I also build the filters with a little more gain so the sig-
nal into the product detector can be kept low. Some times instead of the in
out switch, I use a simple audio fader circuit like in the TenTec Century
to simulate variable bandwidth.

Sorry for getting so carried away here guys.

My main point is that these are very nice transceivers, and should not present
difficultly to many homebrewers. However, they are not suitable for novice
level.

73

Ed WE1AAZ



From [e-mail]  Sun Jan 23 07:41:08 1994
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Date: Sat, 22 Jan 94 16:17:53 GMT
Message-Id: <[e-mail]>
From: [e-mail] (Dick Pascoe)
Reply-To: [e-mail]
To: [e-mail]
Subject: fireball ??
X-Mailer: PCElm 1.07 DIS
Lines: 7

Does anyone know where I can
get any of the crystal oscillators
that were used in the fireball
transmitter ?
Dick G0BPS
--
Richard Pascoe

From [e-mail]  Sun Jan 23 09:40:12 1994
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    (queueing-rmail) id 093811.2631; Sun, 23 Jan 1994 09:38:11 EST
    id AA08348; Sun, 23 Jan 94 09:27:42 EST
Date: Sun, 23 Jan 94 09:27:42 EST
From: [e-mail] (Edward Pacyna)
Message-Id: <[e-mail]>
To: uunet!Think.COM![e-mail]
Subject: NN1G Notes
Cc: [e-mail]



After sending yesterdays mail Re: RadioKit, I had a NN1G Mark II
board set that I began building up.

Well now I see why the why the instructions tell you not to use
sockets on the NE602's. From a RF design view, the layout is not
very good. The NE602's are decoupled very poorly (if at all). As
mentioned yesterday, put the V+ supply (pin 8) somewhere near a
ground plane and install several bypass capacitors, a 100 ohm
resistor and ferite beads near pin 8. In the Mark II a feeble
attempt was made to decouple the product detector (from pin 8
there is over a 1/2" of trace before a single MF bypass then al-
most 3/4" more trace before a 47 ohm decoupleing resistor. On
the product RX mixer pin 8 doesn't get decoupled (yes there is
about 3/4" of trace and a bypass capacitor at the 78L08 regulator.

The BFO circuit has trace running all over the place. Not only
could this cause VHF oscillations, but could couple BFO signal
back into the IF amp. input (something you don't want in a RX).
The input and output trace for the XTAL filter is also much to
long (1 1/2" to 2"). This could really set you up for performance
problems (filtering and RX noise).

I'm building it for 40M and using difference mixing in the RX
as this will reduce the potential for spurs (10MHz IF, 3Mhz VFO).
I built the filter on the bench using 390pF, 510pF and 640pF
capacitors (vs 330/470/560) and measured a 500Hz 6 dB BW with a
filter Z of 400 ohms.

There is also a difference between what is shown on the schematic
for L2 (low end to ground) and the actual board (tied to +12V).
Its part of the rubbering circuit for the BFO and a strange one
at that. +V eventually gets AC coupled to ground, but it would
have been better to put the inductor in series between Y5 and C2.

WEith my band plan in order to receive LSB mode I wanted the BFO
to be on the high side of the filter so I won't install L2 anyway.

To improve filter performance, I grounded all the crystals in the
filter to eliminate coupleing between the units.

I also see that the design runs the NE602's at 8 volts (ouch). The
8 volts also supplys the VFO. The NE602's are happier and perform
better at 6 volts. But since I'm also going to add the QRP15 RIT
circuit and need higher voltage to keep the varactor voltage more
than the RF tank voltage I'll try go with the 8 volts (ouch). If
your VFO doesn't oscillate with the 8 volt suply, get rid of the
MPF102 (it's Vp specification is to board) and use a 2N5486 or
better yet a J310.

73

Ed W1AAZ





From [e-mail]  Sun Jan 23 18:15:28 1994
Return-Path: <[e-mail]>
Message-Id: <[e-mail]>
From: [e-mail]
Date: Sun, 23 Jan 94 18:07 EST
Original-From: mvubr!mvjf (James M Fitton [phone])
To: [e-mail]
Subject: NC-40


I bought a copy of World Radio News just to read the QRP column
by Rich Fisher, KI6SN and the review on the NorCal-40.
I could'nt agree more !   The NC-40 is destined to become
a classic.

Last night (40 was really hot) I worked countries #34 and 35
with the NC-40 at 2 watts......

 72  W1FMR





From [e-mail]  Mon Jan 24 02:12:49 1994
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    id AA06636; Sun, 23 Jan 94 23:11:44 PST
Date: Sun, 23 Jan 94 23:11:44 PST
From: [e-mail] (Doug Hendricks)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: March QRPp Table of Contents

I have worked all weekend on the March issue of QRPp.  Here is a partial table
of contents.  I am waiting on a couple of articles that have been promised.
It will mail BEFORE the first of March!!  Should be a good issue.

From the Editor's Desk, Doug Hendricks, KI6DS                           3
Low Cost Wattmeter, Richard Urmonas, VK3DRU                             4
"Incidentally, What is a 10-10 Award?", Duane Mantick, WB9OMC           4
Characterizing Station Performance, Howie Cahn, WB2CPU                  5
QRP Club List, Chuck Adams, K5FO                                        6
HW8 + T50-6 + ECG488 = 5 Watts, Gary D. Borich, W5UDV                   10
NN1G Up and Running, Palu Mackanos, K2DB                                12
QRP = Cross Country Skiing,  Kalman Laudon, WD6CZI                      13
Ten Tec Kits, Jeff Gold, AC4HF                                          14
ARCI Sprint, Peter Hardie, VE5VA                                        14
QRP Kit Sources, Reprinted from Aug. 93 QST                             15
CQ-WW-CW Results for AA2U, Randy Rand, AA2U                             20
MI QRP Contest, Brad Mitchell, WB8YGG                                   21
Michigan QRP Contest, Jeff Gold, AC4HF                                  21
RadioKit QRP 20, A Review, Jeff Gold, AC4HF                             21
Homebrew es QRPp Review, Chuck Adams, K5FO                              22
Kits vs. Homebrew, Gary Diana, N2JGU                                    23
SSB Contesting QRP in the ARRL Sweepstakes                              24
Building the NN1G Mark II, Brad Mitchell, WB8YGG                        25
CMOS Super Keyer II, Jeff Gold, AC4HF                                   26
SS 93, Chuck Adams, K5FO                                                27
93 Sweepstakes Report, Warren Lewis, KD4YRN                             28
93 Sweepstakes, Bob Applegate, WA2ZZX                                   28
My Favorite CW Contest, Jeff Gold, AC4HF                                29
My Account of SS, Mark Cronenwett, KA7ULD                               29
Another SS Story, Ron Majewski, WB8RUQ                                  30
93 SS, Greg Taylor, KD4HZ                                               30
Ten-Tec Scout - QRP???, Dave Redfern, N4ELM                             30
MFJ-1786 Hi-Q Loop, David Baker, AB5PI                                  31
MFJ-1786 Hi-Q Loop, John Welch, N9JZW                                   33
My Version of the MFJ-1786 Loop, Tom Farish, KJ5LT                      33
Recollections: Bagging the NorCal 40 Kits, Jim Cates, WA6GER            34
NorCal 40 Completed, Rich Mulvey, N2VDS                                 35
Evaluation of the NorCal 40 Kit, Jeff Gold, AC4HF                       36
NorCal Revisited, Jeff Gold, AC4HF                                      37
A Good Laugh with the NorCal 40, Jeff Gold, AC4HF                       38
Fix for Weak Audio in NorCal 40, Wayne Burdick, N6KR                    38
NA Sprint with the NorCal 40, Ron Majewski, WB8RUQ                      39
QRP Directional Power Meter & Antenna Tuner, Jim Pepper, W6QIF          39
Battling the Great QRP Epidemic of 1993 and Losing
     My Experiences with the NorCal 40, J.C. Smith, KC6EIJ              41
NorCal 40 Mods, Bob Warmke, W6CYX                                       43
My NorCal 40, Todd Nichols, KB0HQU/VE3                                  44
Extra Audio for the NorCal 40, Stan Cooper, K4DRD                       44
NorCal 40 Full Band Modification, Terry Young, KC6SOC                   45
QRP Plus Review, Andrew Comas, KF2JH                                    46
A 30 Meter VXO Transmitter, Roy Gresson, W6EMT                          48
The K6LV Homebrew Paddles, Doug Hendricks, KI6DS                        51
Tidbidts (Helpful Hints for the QRPer), Mark Cronenwett, KA7ULD         54
RadioKit Notes, Chuck Adams, K5FO                                       57
Hints for Building the NN1G Mark II, Ed Paycyna                         58

Again, this is not a final list.  I am waiting on at least 2 other articles.
This one may be 6{4 pages.  (Grin).  72, Doug, KI6DS

From [e-mail]  Mon Jan 24 07:22:57 1994
Return-Path: <[e-mail]>
    id AA11691; Mon, 24 Jan 94 07:25:41 -0500
Reply-To: [e-mail]
  (5.65c/IDA-1.4.4); Mon, 24 Jan 1994 07:22:41 -0500
Date: Mon, 24 Jan 1994 07:22:41 -0500
From: Brad Mitchell <[e-mail]>
Message-Id: <[e-mail]>
To: [e-mail], [e-mail]
Subject: Re: NN1G Notes
Cc: [e-mail]







> I also see that the design runs the NE602's at 8 volts (ouch). The
> 8 volts also supplys the VFO. The NE602's are happier and perform
> better at 6 volts. But since I'm also going to add the QRP15 RIT
> circuit and need higher voltage to keep the varactor voltage more
> than the RF tank voltage I'll try go with the 8 volts (ouch). If
> your VFO doesn't oscillate with the 8 volt suply, get rid of the
> MPF102 (it's Vp specification is to board) and use a 2N5486 or
> better yet a J310.
>

I ran the ne602's with an 8v regulatro, and found that the regulator was
actually 8.1 volts out.  The problem showed up as a noise in the rx that
sounded like precip static on an antenna, but apparantly it was some sort
of break down mechanism..  I'm using 6v regulators on one, and 5 on my
other nn1g rig.

73
 -----------------
|  ___  ________  |    Bradley S. Mitchell      WB8YGG
| |  / /        | |    Eastman Kodak Company
| | / /         | |    KEMD Electronic Products
| |< < K O D A K| |    Circuit Board Assembly Dept. 606 Test Engineering
| | \ \         | |    901 Elmgrove Road Rochester, N.Y. 14653-5211
| |__\ \________| |    [phone], FAX [phone]
|                 |    INTERNET:   [e-mail]
 -----------------





> 73
>
> Ed W1AAZ
>
>
>
>
>

From [e-mail]  Mon Jan 24 10:13:48 1994
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        id AA07342 for [e-mail]; Mon, 24 Jan 94 10:13:54 -0500
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    id AA28657 ; Mon, 24 Jan 94 09:38:54 GMT
Date: Mon, 24 Jan 94 14:39:44 GMT
Message-Id: <7285@jek>
From: [e-mail] (Jim Kearman)
To: [e-mail], [e-mail]
Subject: Email

The ARRL Board of Directors has set guidelines for electronic
mail from Headquarters. Since the League pays for the system,
that's fair enough.

If you send me email and you want a response, I need your
street address or at least the ARRL Division, so that I can
prepare a copy of the email for your Director. This is done
now for paper mail, but hasn't been done for electronic mail.

Any postings I make will also have to be copied, presumably
to the entire Board. Therefore, I'll no longer be able to
post; I can't handle the additional work involved.

These guidelines do not differentiate between business and
private email. All mail emanating from me is considered
business related. I'm going to have to investigate private
Internet sites.

73

Jim Kearman, KR1S
Assistant Technical Editor




From [e-mail]  Mon Jan 24 11:10:54 1994
Return-Path: <[e-mail]>
    id AA06182; Mon, 24 Jan 1994 11:10:16 -0500
    id AA13836; Mon, 24 Jan 94 11:10:07 EST
    id AA13854; Mon, 24 Jan 94 11:10:05 EST
Message-Id: <[e-mail]>
    id AA04620; Mon, 24 Jan 94 11:10:04 EST
To: [e-mail] (Jim Kearman)
Cc: [e-mail]
Subject: Re: Email
In-Reply-To: Your message of "Mon, 24 Jan 94 14:39:44 GMT."
             <7285@jek>
Date: Mon, 24 Jan 94 11:10:03 EST
From: "John F. Woods" <[e-mail]>

[e-mail] (Jim Kearman) writes:
> The ARRL Board of Directors has set guidelines for electronic
> mail from Headquarters. Since the League pays for the system,
> that's fair enough.
> If you send me email and you want a response, I need your
> street address or at least the ARRL Division, so that I can
> prepare a copy of the email for your Director. This is done
> now for paper mail, but hasn't been done for electronic mail.
> Any postings I make will also have to be copied, presumably
> to the entire Board. Therefore, I'll no longer be able to
> post; I can't handle the additional work involved.

I think that some board members must have been operating their HTs too
close to their heads...   ;-)

(Jim, if this wisecrack makes you laugh, remember to record it in triplicate
and file it with all the appropriate departments. :-)

73, and good luck finding sane internet access,
John, WB7EEL (now-redfaced ARRL member)

From [e-mail]  Mon Jan 24 12:12:03 1994
Return-Path: <[e-mail]>
  (5.65c/IDA-1.4.4 for [e-mail]); Mon, 24 Jan 1994 12:11:57 -0500
    id AA06722; Mon, 24 Jan 94 09:16:17 -0500
    id m0pOS18-0001YgC; Mon, 24 Jan 94 09:11 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: 6AG7 is ON the air!
To: [e-mail] (Pete at Myth)
Date: Mon, 24 Jan 1994 09:11:49 -0500 (EST)
Cc: [e-mail] (aka (phil cook)),
        [e-mail] ((mail net) (boatanchor net)),
        [e-mail] (qrp @think.com),
        [e-mail] (michael nagorski)
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Content-Length: 1052

 Guess what I had for breakfast?

2 contacts on 3710kc using the 6AG7,  1 tube xmit, built upon a strip of
wood...using fahnstock clips.
 Diagram was of the one I sent along a while back, but in THIS one, I omitted
the 100 ohm kathode resistor. ( I was lazy)

B+ was 150vdc , using the 150V.R (improved 150volt supply)....and the coil
was aprox 6uh, with a 6:1 ratio link-output coil
Tune cap was a AES's 400uuf job ( tune up lands it about 1/2 mesh ).
It was mtd on an L bracket to allow easy fastening to the wood...shaft
points straight up and I used a knob I 'borrowed' off the TV set.

Contactee's were  KB2ANL of Vestal NY who got me at 559 ... I got him 599.
                  N1NJB  of East Orland ME.. got me 479 ... I got him 589.


NOW I'm gonna try 40!...free time willing!
--
Randy KA1UNW              If you get a shock while
                         servicing  your  equipment,         "Works for me!"
randy@192.153.4.200             DON'T  JUMP!                     -Pete Keyes
                     You might break an expensive tube!

From [e-mail]  Mon Jan 24 13:25:39 1994
Return-Path: <[e-mail]>
        id AA13665 for [e-mail]; Mon, 24 Jan 94 13:25:37 -0500
    (Smail3.1.28.1 #6) id m0pOVxb-000B7fC; Mon, 24 Jan 94 13:24 EST
    id AA1177 ; Mon, 24 Jan 94 13:16:25 GMT
Date: Mon, 24 Jan 94 17:53:42 GMT
Message-Id: <7463@jek>
From: [e-mail] (Jim Kearman)
To: [e-mail], [e-mail]
Subject: Misunderstanding

Perhaps I didn't make my previous posting clear enough.
Here's how it will work: I will have to send an electronic
copy of any email I send, to the Director of the division
in which the original recipient lives. This means I will have
to determine who the Director is and forward an electronic
copy to his or her MCImail account.

I choose not to take the time to go through this exercise.
I'm hopeful that, by not posting to the groups, I will
stimulate less email that I have to annotate and copy to
the directors. I just don't have time. Banging out a quick
answer is one thing; this requirement is quite another.

If you need something from me, you can always email me
and I'll try to help. On the other hand, if you do not
specifically address the email to me, I won't respond.

This policy has nothing to do with expense or perceived
wasting of time. The Board simply wants to be aware of
what Headquarters staff is saying. We're already required
to make copies of all written correspondence; this policy
change merely includes electronic correspondence. There
were reasons for their decision; it wasn't arbitrary. Last
year I waxed philosophical about something and what I said
wound up in a club newsletter edited by a challenger for
League office, without my prior knowledge! In that same issue
were remarks by two other Headquarters staffers, also reprinted
without our knowledge or permission. Unfortunately, some other
staffers have been indiscrete with postings and remarks, and
said things that were considered injurious to the League. You
elect the Board to look after the affairs and well-being of
the League, and they feel these steps are necessary for them
to do their jobs.

Once again, I am voluntarily choosing to not post to either
group in the future, merely to save myself some aggravation
and potential aggravation. Nobody said I had to. Anyone with
a gripe at the League can flame away with impunity, until I
catch up to you at a hamfest some day!

You can always call me on the phone: [phone] ext 279.

73

Jim, KR1S




From [e-mail]  Mon Jan 24 13:34:02 1994
Return-Path: <[e-mail]>
    id m0pOW4L-0001fhC; Mon, 24 Jan 94 13:31 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: Re: 6AG7 is ON the air!
To: [e-mail] (Michael Nagorski)
Date: Mon, 24 Jan 1994 13:31:24 -0500 (EST)
Cc: [e-mail] (Pete at Myth), [e-mail] (aka (phil cook)),
        [e-mail] ((mail net) (boatanchor net)),
        [e-mail] (qrp @think.com)
In-Reply-To: <[e-mail]> from "Michael Nagorski" at Jan 24, 94 12:55:24 pm
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Content-Length: 420

Ok...got some free time today....so...I'll have the 6AG7 on 40 mtrs.

Who knows? Maybe some one here will hear me!  Got 3rd contact ...on 40 mtrs
so far.

--
Randy KA1UNW              If you get a shock while
                         servicing  your  equipment,         "Works for me!"
randy@192.153.4.200             DON'T  JUMP!                     -Pete Keyes
                     You might break an expensive tube!

From [e-mail]  Mon Jan 24 13:58:04 1994
Return-Path: <[e-mail]>
    id m0pOWS7-0000OQC; Mon, 24 Jan 94 13:55 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: no subject (file transmission)
To: [e-mail] (qrp @think.com)
Date: Mon, 24 Jan 1994 13:55:59 -0500 (EST)
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Content-Length: 1054

Jeff ! I mislaid yer address and waiting for you to repost so I could
mail this to you....but...

                                               (burn-out at )     (burn)
                       NTE     type             current volts hfe  watts  ft
Motorola 104852      none listed*
Motorola 2n2905        129        pnp  lo pwr    1a     80    90    1w   150mc
Motorola 104912      none listed*
SanKen (?) 2s0223  02y 186 %      npn med pwr    3a     60    100  12.5  50mc
Toshiba .T c1569 4k    376        npn lo pwr    200ma  300v   100    1w  70mc
                                                                    15w,if COLD
                     NTE 1992/ crm-6 book
Make sense?  yes

Jeff

* Motorola is notorious for not releasing info on their all-number devices

describe body of unit and ckt it came our of and I'll derive loose specs.

% not 2s0223 but 2SC223  the jap C's look like '0"

If ya like, let me gather up some drawings, and I'll soon send you a
lickity-larrup transistors tester ...it beeps if unit is good, & hooked up
right.



From [e-mail]  Mon Jan 24 14:23:50 1994
Return-Path: <[e-mail]>
    id AA03723; Mon, 24 Jan 94 11:23:45 -0800
    Mon, 24 Jan 94 11:23:44 -0800
Posted: Mon, 24 Jan 94 19:10:01 -0800
Date: Mon, 24 Jan 94 19:07:01 -0800
Sender: [e-mail]
From: "CHESTER BOWLES" <[e-mail]>
Message-Id: <83819142104991/572567@AIMHI>
To: [e-mail] [e-mail]
Subject: Re:  Misunderstanding                                                  1
Msg-Class: !AS

[This message is converted from WPS-PLUS to ASCII]

    Jim Kearman writes:


    >>Perhaps I didn't make my previous posting clear enough.
    >>Here's how it will work: I will have to send an electronic
    >>copy of any email I send, to the Director of the division
    >>in which the original recipient lives. This means I will have
    >>to determine who the Director is and forward an electronic
    >>copy to his or her MCImail account.

    Wouldn't it just be easier to add them to the [e-mail]
    distribution list?  They might even enjoy reading the non_League stuff!

    Chet, AA1EX

From [e-mail]  Mon Jan 24 15:03:13 1994
Return-Path: <[e-mail]>
    id PAA19332; Mon, 24 Jan 1994 15:02:24 -0500
Message-Id: <[e-mail]>
Date: 24 Jan 94 15:02:19 EST
From: [e-mail] (Kenneth E. Harker)
Reply-To: [e-mail] (Iago)
Subject: Re: Misunderstanding
To: [e-mail] (Jim Kearman), [e-mail], [e-mail]

--- Jim Kearman wrote:
This policy has nothing to do with expense or perceived
wasting of time. The Board simply wants to be aware of
what Headquarters staff is saying. We're already required
to make copies of all written correspondence; this policy
change merely includes electronic correspondence.
--- end of quoted material ---

Next thing you know, you'll be working in front of a monitoring video camera,
they'll be recording and analyzing your every keystroke with AI software, and
timing your breaks to the rest room.

_ken/n1pvb

From [e-mail]  Mon Jan 24 15:21:15 1994
Return-Path: <[e-mail]>
    id AA21564; Mon, 24 Jan 1994 15:20:50 -0500
Date: Mon, 24 Jan 1994 15:20:49 -0500 (EST)
From: Robert Marlan <[e-mail]>
Sender: Robert Marlan <[e-mail]>
Reply-To: Robert Marlan <[e-mail]>
Subject: Re: Misunderstanding
To: Jim Kearman <[e-mail]>
Cc: [e-mail]
In-Reply-To: <7463@jek>
Message-Id: <[e-mail]>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII

Jim,
I have a suggestion, There are several sites on the internet
that let you  have a free acccount which allows mail and usenet
(unlimited) both receive and post.  If you like I could help you get one
of these accounts.  It would be set up as you personal accountand thus
say what you want. You could acess it via a simple telnet from where you are.
The return address would be from the account not the league, and thus I would
hope that would free you from problems.  It seems like a sad day when the
league impinges upon the fraternity of ham radio, and the best solution is to
down grade technology (ie phone)  Have they decided to start taping all
calls..
I believe a former president.... DIck Nixon could help them set it up!
hope that might help
bob ka6noc


From [e-mail]  Mon Jan 24 18:33:46 1994
Return-Path: <[e-mail]>
    id AA07750; Mon, 24 Jan 94 15:32:37 PST
Date: Mon, 24 Jan 94 15:32:37 PST
From: [e-mail] (Doug Hendricks)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: QRPp Address

To subscribe to QRPp send $5 to Jim Cates, WA6GER, 3241 Eastwood Rd.,
Sacramento, CA 95821.  Checks and money orders made out to Jim Cates.
Foreign subscriptions are $15 US, but we do mail airmail.  72, Doug

From [e-mail]  Tue Jan 25 09:58:09 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Tue, 25 Jan 1994 09:00:29 CST
Date: Tue, 25 Jan 1994 09:00:29 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: QRP Plus
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: JMG
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-Transfer-Encoding: 7BIT

Just got the flyer on the QRP Plus transceiver by Index labs.

Boy it looks even tinier than I thought.. supposedly can run it all
weekend 0n a small 4ah gel cell. I can see packing up a dipole,
small tuner and gell cell and even bringing it on a plane (I am planning
a trip to Arizon/New Mexico). don't know how it would do plugged into
the cigarette lighter of a car.. no noise blanker..but then again I am
currently using a Ten Tec 509.

I would love to get my hands on one of these for a month or so and test
it out.

72

Jeff, AC4HF

From [e-mail]  Tue Jan 25 10:52:19 1994
Return-Path: <auratek!auratek.com![e-mail]>
    (5.61/UUNET-internet-primary) id AAwajv04717; Tue, 25 Jan 94 10:52:05 -0500
    (queueing-rmail) id 104125.2763; Tue, 25 Jan 1994 10:41:25 EST
    id AA01194; Tue, 25 Jan 94 10:03:22 EST
Date: Tue, 25 Jan 94 10:03:22 EST
From: [e-mail] (Edward Pacyna)
Message-Id: <[e-mail]>
To: uunet!Think.COM![e-mail]
Subject: Building XTAL Filters
Cc: [e-mail]


Several folks have asked how I determined the filter response mentioned in
my mail on the NN1G. I use the following setup.


     .................           .............. ....
     .     VXO       .           .            .    >
     .  Buffer/Amp/  ..../\/\/\...   Filter   .    > R l
     .  Atten. Pads  .     Rs    .            .    >
     .................           .............. ....
            |                           |
           ///                         ///

The VXO (variable crystal oscillator) uses one of the extra crystals left
over. It's a JFet osc. with a MOSFet buffer amp. and a series of 50 ohm
attenuation pads on it's output (to guarantee a 50 ohm signal source and
allow output level adjustment. Output is from -20dBM to +10dBM.

I take a best guess at the required filter termination R (R = Rl = (Rs+50).
I use my multimeter (low voltage range) and a RF probe (from ARRL handbook)
to monitor the voltage across Rl as I vary the VXO frequency. In effect I
sweep the filter and plot the bandpass on graph paper. The generator freq-
uency is monitored with a frequency counter (or receiver with accurate dial).

If I get the expected response (even bandpass with just a bit of ripple)
my guess was correct. If not, I try another R and repeat. After you do this
a few times you get pretty good at knowing whether to increase or decrease
R based on the response.

73

Ed W1AAZ


From [e-mail]  Tue Jan 25 11:11:18 1994
Return-Path: <[e-mail]>
  (5.65c/IDA-1.4.4 for <[e-mail]>); Tue, 25 Jan 1994 09:09:03 -0700
    id AA00530; Tue, 25 Jan 94 09:09:49 MST
Date: Tue, 25 Jan 94 09:09:49 MST
From: [e-mail] (Jim Kearman)
Message-Id: <[e-mail]>
X-Disclaimer: Nyx is a public access Unix system run by the University
    of Denver.  The University has neither control over nor
    responsibility for the opinions or correct identity of users.
To: [e-mail]
Subject: I'm baaack


Now, where were we?...

72/73

Jim, KR1S
[e-mail]


From [e-mail]  Tue Jan 25 11:52:50 1994
Return-Path: <ccm![e-mail]>
    (Smail3.1.28.1 #2) id m0pOr0D-000MNiC; Tue, 25 Jan 94 08:52 PST
    (Smail3.1.28.1 #1) id m0pOr2e-0000WoC; Tue, 25 Jan 94 08:55 PST
Date: Tue, 25 Jan 94 08:55:04 PST
From: Michael D Wyman <[e-mail]>
Message-Id: <[e-mail]>
To: [e-mail]
Subject:


Text item: Text_1

                Jeff,

        My name is Mike Wyman  WB1CWD.  I have been active QRP here in
Arizona with a number of associates in the Chandler area.  I was
wondering if we could get together while you are out here provided you
are in the Phoenix area to chat QRP a while.

        Please let me know what you think . .

                                                73 de Mike Wyman
                                                        WB1CWD

From [e-mail]  Tue Jan 25 14:19:32 1994
Return-Path: <[e-mail]>
    id AA02326; Tue, 25 Jan 94 09:19:18 HST
    id AA24339; Tue, 25 Jan 94 09:17:56 HST
Date: Tue, 25 Jan 94 9:17:56 HST
From: Jeff Herman <[e-mail]>
To: [e-mail] (Jim Kearman)
Cc: [e-mail]
Subject: Re: I'm baaack
In-Reply-To: Your message of Tue, 25 Jan 94 09:09:49 MST
Message-Id: <[e-mail]>

Yea! Jim's back! That sure was fast.

Okay now, Gang; no discussing you-know-what so we don't lose you-know-who
again...

Jeff NH6IL 

From [e-mail]  Tue Jan 25 14:55:09 1994
Return-Path: <[e-mail]>
    id m0pOton-0001j4C; Tue, 25 Jan 94 14:52 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: Re: I'm baaack
To: [e-mail] (Jim Kearman)
Date: Tue, 25 Jan 1994 14:52:56 -0500 (EST)
Cc: [e-mail] (qrp @think.com)
In-Reply-To: <[e-mail]> from "Jim Kearman" at Jan 25, 94 09:09:49 am
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Content-Length: 735

>
>
> Now, where were we?...
>
We were plotting and conspiring on how to bury yer boss in copys of all you
send out!

===
May I introduce a more cheerful item?

Today and yesterday, I was happy as a clam in mud, with the 6AG7 QRP xmit
on 80 & 40 mtrs.
Thats the ckt I sent in the other day.
On that set, I even suprised my self, getting 2 in a row on 80mtrs, yesterday
morning!
Now I have to stop, so I can catch up on my QSL's...!

And you thought YOU had trouble!

--
Randy KA1UNW              If you get a shock while
                         servicing  your  equipment,         "Works for me!"
randy@192.153.4.200             DON'T  JUMP!                     -Pete Keyes
                     You might break an expensive tube!

From [e-mail]  Tue Jan 25 17:35:15 1994
Return-Path: <[e-mail]>
    id m0pOton-0001j4C; Tue, 25 Jan 94 14:52 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: Re: I'm baaack
To: [e-mail] (Jim Kearman)
Date: Tue, 25 Jan 1994 14:52:56 -0500 (EST)
Cc: [e-mail] (qrp @think.com)
In-Reply-To: <[e-mail]> from "Jim Kearman" at Jan 25, 94 09:09:49 am
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Content-Length: 735

>
>
> Now, where were we?...
>
We were plotting and conspiring on how to bury yer boss in copys of all you
send out!

===
May I introduce a more cheerful item?

Today and yesterday, I was happy as a clam in mud, with the 6AG7 QRP xmit
on 80 & 40 mtrs.
Thats the ckt I sent in the other day.
On that set, I even suprised my self, getting 2 in a row on 80mtrs, yesterday
morning!
Now I have to stop, so I can catch up on my QSL's...!

And you thought YOU had trouble!

--
Randy KA1UNW              If you get a shock while
                         servicing  your  equipment,         "Works for me!"
randy@192.153.4.200             DON'T  JUMP!                     -Pete Keyes
                     You might break an expensive tube!

From [e-mail]  Tue Jan 25 19:00:01 1994
Return-Path: <[e-mail]>
        (Soft-Switch Central V4L380P3); 25 Jan 1994 18:40:18 EST
Message-Id: <BL15B.JHEISE.5048.1994 0125 18 40 18 40>
Date: 25 Jan 1994 18:40:18 EST
From: "JHeise" <[e-mail]>
Subject: QRP Wattmeters
To: [e-mail]
Comment: MEMO 1994/01/25 18:57


     Can anyone give me some feedback on good QRP wattmeters?  All of us
     want to run legal QRP levels.  I would also like to be able to measure
     accurately when I really start to reduce power.  Not everyone can
     afford a Bird Thruline.  What are some good accurate alternatives?  I
     have heard mixed reports on some of the units on the market.

     I am preparing a QRP presentation for a local radio club, and I want
     to include a few words on this subject.  I would appreciate any good
     input either posted, if applicable to all, or direct at my address
     below.
     72/73  Jan, WA4VQD        [e-mail]



From [e-mail]  Tue Jan 25 19:16:40 1994
Return-Path: <[e-mail]>
        (Soft-Switch Central V4L380P3); 25 Jan 1994 18:55:18 EST
Message-Id: <BL15B.JHEISE.5054.1994 0125 18 55 18 55>
Date: 25 Jan 1994 18:55:18 EST
From: "JHeise" <[e-mail]>
Subject: QRP Contest Scoring
To: [e-mail]
Comment: MEMO 1994/01/25 19:14


     I was completing my entry for the Michigan QRP contest (first time)
     and had a couple questions for some of you veterans.

     1. In reading the rules, I interpret the MI QRP SPC calculation to be
     calculated as in the ARCI contests where you sum all the
     State/Province/Country (SPC) separately for each band.  Not just
     counted once for the entire contest as in some ARRL contests.
     (Yes, I just worked the RTTY Roundup.) Am I correct?

     2.  Homebrew is a bonus multiplier applied to all contacts, and not on
     a band by band basis.  I interpret this to mean that if I used a mix
     of HB on some bands, but commercial on some others, I cannot take
     credit for the bonus.  This seems like the honest way to me, but the
     way it is written I could see one saying "I used a HB transmitter,
     so..."  Is my interpretation correct?

     TNX - 72/73  Jan, WA4VQD       [e-mail]



From [e-mail]  Tue Jan 25 19:52:41 1994
Return-Path: <[e-mail]>
    id AA03446; Tue, 25 Jan 94 19:52:32 EST
          id AA47054; Tue, 25 Jan 1994 19:57:30 -0500
From: [e-mail] (Bruce Lifter)
Message-Id: <9401260057.AA47054@sarsa>
Subject: Building the NN1G Mark II XCVR
To: [e-mail]
Date: Tue, 25 Jan 1994 19:57:29 -0500 (EST)
Cc: [e-mail] (Bruce Lifter)
X-Mailer: ELM [version 2.4 PL20]
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Content-Length: 5819

Our next local club meeting's program is going to be on QRP. I provided
the following article to be included in the corresponding newsletter. I
though you all might also be interested.

73, Bruce

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

Building the NN1G Mark II XCVR
by Bruce Lifter, KR4AQ

I was interested in building a small QRP rig that would fit in my brief
case that I could take with me when I'm out of town. I really did not want
to dump $200 into a kit for fear it would not perform that well and I might
not get it working.  I ran across a few references to the NN1G rig via various
internet sources. It was getting pretty good remarks about it and, most
important, it was inexpensive ($59.95).  This seemed like pretty low risk,
so I went ahead and ordered one from Dan's Small Parts and Kits.

The NN1G Mark II is a 1.5 watt single band superhet transceiver. It
was designed around three NE602 IC's (double balanced mixer and oscillator
all on a single chip). The rig has a VFO based on the Hartley oscillator and
has a crystal filter. According to the documentation provided, the rig is
supposed to draw about 30 mA on receive and about 215 mA on transmit.

The kit comes with two silk screened boards (one TX, one Recv), all
board mounted components, a 10k audio pot, and a nice air variable
capacitor. The air variable is optional. He sells the kit for $10 less
without the air variable. The Air variable he sends depends on what he has
on hand. The one I received had a 7:1 reduction drive built in. The kit is
for either 80, 40, 30, or 20 meter bands. I ordered the 40 meter kit.
The builder must supply the case, hook up wire, and all knobs and connectors.

The documentation that came with the kit consisted of a circuit diagram,
2 pages listing the parts included, 2 pages of parts layout diagrams (one
for the TX board and one for the Recv board), an article describing the
original NN1G rig by Dave Benson (NN1G) from the January 93 QRP Quarterly,
2 pages of information on building and aligning the NN1G Mark II transceiver
(written by NN1G), and a page on putting the NN1G Transceiver on 80/40/30
meters, apparently from another edition of the QRP Quarterly.

This is definitely not a Heath kit! The documentation gives very little
instruction on how to put the kit together. There is a few tips provided
on building such as not putting the chips in sockets for it may cause one
them to oscillate at VHF.

I started by checking the parts provided against the parts list. Everything
checked out OK except for two capacitors that were supposed to be 47pf which
measured on my multimeter as 470pf. They were marked with 470 which can
be interpreted as either 47 or 470.

Not having much experience in building XCVRs, I decided to solder it all
together, mount it in its case and then jump right into the alignment procedure.
I won't do that again. I got to step 3 in the alignment procedure and found
that the local oscillator was not oscillating. This drove me crazy for about
a week. To make a long story short, I ended up desoldering all the IC chips
and methodically replacing every component in the VFO circuit. The bottom line
was that a single 330pf NPO capacitor was bad. The worst part was that I had
taken out the bad capacitor, measured it and then put it back in the board
again only to later find out that it was the guilty party. I still don't know
whats wrong with the cap, it checks out with my meter.

Once I got the LO to oscillate, things went much smoother. I plugged the ICs
back in the board and completed the rest of the alignment with little trouble.
The alignment procedure was easy to follow and well written.

I installed the rig in a Radio Shack 3 X 5.25 X 5.875 metal cabinet. The
boards and air variable fit with plenty of room for future modifications. I
have already made two minor mods to the rig. First I added a trimmer cap
in parallel to the air variable. This allows me to easily change the start
and end frequency of the rig. (The rig has about 80k hertz coverage with
air variable supplied with my kit.) The mod does not seem to affect the
stability of the VFO. The other mod was also pretty minor; I placed a diode
in series with the power supply for polarity protection.

The rig seems to operate quite well. My only complaints so far are in the audio
portion of the rig (all of which should be fixed shortly with further
minor modifications). The kit, as it comes, does not seem to be able to drive
anything other than a set of head phones. The LM386 used in the audio section
is supposed to have another 20 dB of gain in reserve. Dan is sending me
a mod sheet that will allow the rig to easily drive a 5 inch speaker. My
other complaint is that the side tone audio is to low while transmitting.
While testing with a strong station across town, I could barely hear my side
tone while transmitting.  A mod to cure this is already floating around
Internet.

Overall I am very pleased with this kit. My main rig is an ICOM 737 without
a CW filter. The Mark II is actually easier to listen to at night during noisy
band conditions due to its filter. I think I'm ready to build another one for
20 or 30 meters. I talked to Danny Stevig (of Dan's Small Parts and Kits)
today and he tells me that he currently has the kits on special, 4/$200 mix
and match the bands.

One more note,... special thanks to Doug Snowden, N4IJ and Dave Rush, WO4Z
for their patient help in my struggle get the LO working.


--
Bruce Lifter                                                      MS: R5-202
Harris Corporation                             email: [e-mail]
Controls Division           Amateur Radio Packet: KR4AQ@N5AUV.#MLB.FL.USA.NA
----------------------------------------------------------------------------

From [e-mail]  Tue Jan 25 20:45:13 1994
Return-Path: <[e-mail]>
  (5.65c/IDA-1.4.4 for <[e-mail]>); Tue, 25 Jan 1994 18:43:11 -0700
    id AA15883; Tue, 25 Jan 94 18:43:57 MST
Date: Tue, 25 Jan 94 18:43:57 MST
From: [e-mail] (Jim Kearman)
Message-Id: <[e-mail]>
X-Disclaimer: Nyx is a public access Unix system run by the University
    of Denver.  The University has neither control over nor
    responsibility for the opinions or correct identity of users.
To: [e-mail]
Subject: NN1G Mark II Transceiver


Ed Pacyna mentioned some problems with long, narrow traces
connected to the NE602 devices. I talked to Dave Benson a
few minutes ago, and he's working on a better board layout.
Bear in mind, if this was a commercial operation, his rig
wouldn't be available for two years! He went from drawing board
to having 200 units in the field in a matter of months.

Of course, we "reactionary" types who insist on building
ground-plane style don't have these problems.....  :>

72

Jim, KR1S


From [e-mail]  Tue Jan 25 20:41:54 1994
Return-Path: <[e-mail]>
  (5.65c/IDA-1.4.4 for <[e-mail]>); Tue, 25 Jan 1994 18:39:53 -0700
    id AA15467; Tue, 25 Jan 94 18:40:40 MST
Date: Tue, 25 Jan 94 18:40:40 MST
From: [e-mail] (Jim Kearman)
Message-Id: <[e-mail]>
X-Disclaimer: Nyx is a public access Unix system run by the University
    of Denver.  The University has neither control over nor
    responsibility for the opinions or correct identity of users.
To: [e-mail]
Subject: QRP Wattmeters


Jan, WA4VQD asks about accurate QRP wattmeters. First, the
Bird wattmeter isn't that accurate at QRP levels, on HF.
The smallest full-scale element you can get is 25 W.

It is fairly simple to calibrate a wattmeter if the load
is of known, non-reactive impedance. An oscilloscope or
rf voltmeter is all you need.

A pretty good wattmeter a few of us have built appears
in recent editions of the ARRL Handbook. It was designed
by Roy Lewallen, and originally appeared in Feb 90 QST.
I think Oak Hills sells kits, and you can get boards from
FAR Circuits.

The Wenz Company marketed a couple of QRP-range wattmeters
in the US for a while. I'm not sure if Wenz is the actual
manufacturer or not; similar wattmeters have also been sold
with Yaesu's name on them. As far as I know, they're no longer
sold here, though.

An SWR indicator I particularly like is in Solid State
Design. It uses a load to protect your finals while you
tune the antenna; then you switch out the load and operate.
This indicator doesn't indicate actual SWR or power, but
most of the time I don't care. The circuit is shown as
part of a 40-meter T-match antenna tuner, near the back of
the book. Sorry, my copy is still in the box from when I
relocated my desk.

72,

Jim, KR1S

From [e-mail]  Tue Jan 25 22:29:29 1994
Return-Path: <fmsystm![e-mail]>
    Tue, 25 Jan 94 22:27 EST for Think.COM!qrp
    id m0pP0p3-0001BiC; Tue, 25 Jan 94 22:21 EST
Message-Id: <[e-mail]>
From: [e-mail] (Andrew Sargent N8OFS)
Subject: 10.14 xmiter schematics???
To: [e-mail] (QRP)
Date: Tue, 25 Jan 1994 22:21:41 -0500 (EST)
Reply-To: [e-mail]
X-Mailer: ELM [version 2.4 PL21]
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 8bit
Content-Length: 604

Hello gang,

Since 10.14Mhz is in the 30M band, why dosen't somebody design a
5W (or less) xmiter, and I will build them and sell them (QRP
mail-list members have first dibbs).  I managed to locate 12 10.14
xtals, I'll probably find more.

Just wondering...

BTW, my personal 5.6GHz record is 37.75 miles on 2W Point-to-Point.

--
Mesmerized by a decade of hate,           ! AMATEUR =   N8OFS
Flowers and remorse,                      ! ARMY MARS = AAN5HJT
Fading vision lost in time,               ! CB =        THE NEON KNIGHT
Tragedy on course!!! - Frontline Assembly ! HACKER =    TH3 N30N KN16Ht

From [e-mail]  Wed Jan 26 01:00:20 1994
Return-Path: <[e-mail]>
    id AA12698; Tue, 25 Jan 94 20:00:07 HST
    id AA29701; Tue, 25 Jan 94 20:00:08 HST
Date: Tue, 25 Jan 94 20:00:08 HST
From: Jeff Herman <[e-mail]>
To: [e-mail]
Subject: 10.14 mhz xmtrs
Message-Id: <[e-mail]>

Gang,
   Andrew brought up a good idea - now that we know a source for 10.14 MHZ
xtals (the older synthesized CBs) why not take one of those QRP xmtr
circuits I posted for, say, 40M and change L and C in the tank and filter
sections so they're resonant in the 30M band. 30M seems awfully quiet
from my QTH here in Hawaii; even last month while I was in California
that band was dead. Let's put some life into it!

Jeff NH6IL

From [e-mail]  Wed Jan 26 09:16:58 1994
Return-Path: <[e-mail]>
          id AA06573; Wed, 26 Jan 1994 09:20:19 -0500
    id AA09803; Wed, 26 Jan 1994 09:20:18 -0500
Message-Id: <[e-mail]>
To: [e-mail]
Subject: QRP Wattmeters
Date: Wed, 26 Jan 94 09:20:11 -0500
From: [e-mail]
X-Mts: smtp


A question was asked about what existed out there for affordable
QRP wattmeters, a timely question as February QST has a Jeff Gold
article which in part discusses this.

Jim (KR1s) mentioned the W7EL wattmeter in a recent post... I just
finished building one this past weekend.  It seems to work just fine.
You'll notice that this is the design which Oak Hills Research most
likely uses for their wattmeter.  My kit was from 624 Kits, and didn't
include the 1 mA meter, enclosure, or RF connectors, as opposed to the
Oak Hills kit which is complete.  In my situation, I had a case laying
around which is roughly the same size as the OHR enclosure and cost me $2;
a quick trip to the Ramsey parts outlet netted me a 1 mA meter for $1.
Here's how I see the economics of building this particular wattmeter:

    1. Oak Hills Research Kit - complete - $80

    2. 624 Kits - parts kit - $36
                  ($40 = cost of kit + my enclosure/meter/connectors)

    3. You procure all parts, enclosure, and meter - $20
       Note that depending on your local/mailorder surplus parts
       accessibility, the above cost may vary.

If you are really interested in this design, check out the February
1990 issue of QST, or look it up in the ARRL book "QRP Classics".

73 to all.
- Gary N2JGU

 ------------      Gary M. Diana, Sr.    N2JGU
| |        | |     Harris Corporation
| |        | |     RF Communications Division
|-|/\/\/\/\|-|     Automated Communications Group, MS 220
|-|/\/\/\/\|-|     1680 University Avenue
| |        | |     Rochester, NY 14610
| |        | |     [phone]
 ------------      Internet:   [e-mail]

From [e-mail]  Wed Jan 26 10:16:04 1994
Return-Path: <[e-mail]>
        id AA01200 for [e-mail]; Wed, 26 Jan 94 10:16:11 -0500
    (Smail3.1.28.1 #6) id m0pPBxK-000B8iC; Wed, 26 Jan 94 10:14 EST
    id AA4963 ; Wed, 26 Jan 94 10:06:15 GMT
Date: Wed, 26 Jan 94 15:07:07 GMT
Message-Id: <7812@jek>
From: [e-mail] (Jim Kearman)
To: [e-mail], [e-mail]
Subject: 73

My efforts to reduce the hassle factor have apparently backfired,
so I am voluntarily unsubscribing from these groups.

73,

Jim, KR1S



From [e-mail]  Wed Jan 26 10:40:28 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Wed, 26 Jan 1994 09:42:45 CST
Date: Wed, 26 Jan 1994 09:42:45 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: New Ham
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: JMG
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-Transfer-Encoding: 7BIT

Help,

There is a local young ham that went through a Novice class I taught and
I have been friendly with the family since. He called and is interested
in upgrading to General. I need to get him the latest test banks for
Technician and General.  He will be borrowing my QRP equipment to get on
the air. .so really is relevant to this group HI HI.

What is the easiest way to get it.. any ftp sites.. does ARRL have it
available over Internet.

thanks in advance for any help.

72

Jeff, AC4HF

From [e-mail]  Wed Jan 26 12:00:20 1994
Return-Path: <[e-mail]>
    id AA20623; Wed, 26 Jan 94 08:41:08 PST
    id AA04098; Wed, 26 Jan 1994 08:42:52 -0800
 V4.2-12 #4050) id <[e-mail]>; Wed,
 26 Jan 1994 08:44:54 PDT
Date: Wed, 26 Jan 1994 08:44:34 -0800
From: [e-mail] (Grover Cleveland)
Subject: Antenna modeling software
To: [e-mail]
Message-Id: <[e-mail]>
X-Envelope-To: [e-mail]
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7BIT

I am in need of inexpensive antenna modeling software. It doesn't need
to do anything but wire antennas but must produce accurate plots
of horizontal and vertical gain at any height above ground.

Any suggestions?

Grover
WT6P



From [e-mail]  Wed Jan 26 12:31:43 1994
Return-Path: <[e-mail]>
    id AA08982; Wed, 26 Jan 94 09:31:34 PST
    id AA14345; Wed, 26 Jan 94 09:31:32 PST
    id AA04406; Wed, 26 Jan 94 09:32:53 PST
Date: Wed, 26 Jan 94 09:32:53 PST
From: [e-mail] (Ray Anderson)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: re:73



    Your second exit was even quicker than your first return.
What would we do without red-tape and management? (Probably quite a bit)

73's,
    Ray, WB6TPU


----- Begin Included Message -----

From [e-mail] Wed Jan 26 08:44:38 1994
Date: Wed, 26 Jan 94 15:07:07 GMT
From: [e-mail] (Jim Kearman)
To: [e-mail], [e-mail]
Subject: 73
Content-Length: 137

My efforts to reduce the hassle factor have apparently backfired,
so I am voluntarily unsubscribing from these groups.

73,

Jim, KR1S




----- End Included Message -----


From [e-mail]  Wed Jan 26 12:58:30 1994
Return-Path: <[e-mail]>
    id AA01664; Wed, 26 Jan 1994 10:58:25 -0700
Message-Id: <[e-mail]>
Date: Wed, 26 Jan 1994 10:58:25 -0700
From: Dave Finley <[e-mail]>
To: [e-mail]
Subject: Any info on QRP Plus?


Has anyone had recent contact with Index Labs or actually seen
a QRP Plus transceiver?

A friend of mine called the phone number on the flyer and got
a message that the number had been disconnected.

Thanks,

Dave Finley, N1IRZ


From [e-mail]  Wed Jan 26 13:56:54 1994
Return-Path: <[e-mail]>
Date: Tue, 25 Jan 94 22:58:52 GMT
Message-Id: <[e-mail]>
From: [e-mail] (Dick G0BPS)
Reply-To: [e-mail]
To: [e-mail]
Subject: Re: I'm back (agn)
X-Mailer: PCElm 1.08
Lines: 5

After all that, he's back
and I thought we has lost him.
Welcome home Jim
--
Dick G0BPS

From [e-mail]  Wed Jan 26 16:00:19 1994
Return-Path: <ccm![e-mail]>
    (Smail3.1.28.1 #2) id m0pPHLJ-000MPkC; Wed, 26 Jan 94 13:00 PST
    (Smail3.1.28.1 #1) id m0pPHNu-00013DC; Wed, 26 Jan 94 13:02 PST
Date: Wed, 26 Jan 94 13:02:46 PST
From: Michael D Wyman <[e-mail]>
Message-Id: <[e-mail]>
To: [e-mail]
Subject: QRP Plus . . .


Text item: Text_1


        I talked to Bruce Franklin yesterday and he has a shipment on
Feb 5.  The number is [phone].  We chatted a while about the radio
and the future stuff that he is considering . . .

        Hope that helps                         72
                                                Mike Wyman WB1CWD

From [e-mail]  Wed Jan 26 18:51:56 1994
Return-Path: <[e-mail]>
    for [e-mail] id AA21543; Wed, 26 Jan 94 15:51:51 -0800
    for @sgi.sgi.com:[e-mail] id AA11059; Wed, 26 Jan 94 17:34:35 -0600
    for @sgidal.dallas.sgi.com:[e-mail] id AA14068; Wed, 26 Jan 94 17:34:34 -0600
Date: Wed, 26 Jan 94 17:34:34 -0600
From: [e-mail] (Chuck Adams)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: 40 meters


seems like 40 meters this past week has been hot.

two nights ago, for the first time in over a month, i fired up the
K5FO Special on 40 (the only band it'll work on).

heard a W6 calling CQ around 7040 and he was 599, so what the hey.
also, he was doing 40wpm.  he gave me 539 (stingy S-meter) :-)

no QRM, so he asked me if i could crank it up.  of course.  so at 70wpm
we carried on for a while.  he had me clear but i heard an amtor from
europe (my guess) just above the noise level.

the W6 was running 1KW and i was at 0.95W.  i'll be on tonite.

i have spent some time (the reason why the low level of activity with
this group) entering 30+ years of awards data for the QRP ARCI into
a PC computer.  :-)  had to do it to make sure that it was set for
eternity.

congrats to Jeff Gold on his highly visible article in the Feb QST.
Jeff obviously has too much time on his hands.  :-)  ;-)

more to follow.  the vacation is over.


dit   dit
Chuck Adams  K5FO  CP-60 wpm
[e-mail]




From [e-mail]  Wed Jan 26 22:32:24 1994
Return-Path: <fmsystm![e-mail]>
    Wed, 26 Jan 94 22:31 EST for Think.COM!qrp
    id m0pPNOy-000110C; Wed, 26 Jan 94 22:28 EST
Message-Id: <[e-mail]>
From: [e-mail] (Andrew Sargent N8OFS)
Subject: Re: 10.14 mhz xmtrs
To: [e-mail] (Jeff Herman)
Date: Wed, 26 Jan 1994 22:28:16 -0500 (EST)
Cc: [e-mail] (QRP)
In-Reply-To: <[e-mail]> from "Jeff Herman" at Jan 25, 94 08:00:08 pm
Reply-To: [e-mail]
X-Mailer: ELM [version 2.4 PL21]
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 8bit
Content-Length: 1409

> Date: Tue, 25 Jan 94 20:00:08 HST
> From: Jeff Herman <[e-mail]>
> To: [e-mail]
> Subject: 10.14 mhz xmtrs
> Message-Id: <[e-mail]>
> Content-Type: text
>
> Gang,
>    Andrew brought up a good idea - now that we know a source for 10.14 MHZ
> xtals (the older synthesized CBs) why not take one of those QRP xmtr
         ^^^^^^^^^^^^^^^^^^^^^^^^^
Jeff, Jeff, Jeff...  You wern't listening...  The 10.14 xtals _only_
come from older 23CH _XTAL_ CB's, not the synthesised ones!  I never
immagined that my CB knowledge would come in handy...

> circuits I posted for, say, 40M and change L and C in the tank and filter
> sections so they're resonant in the 30M band. 30M seems awfully quiet
> from my QTH here in Hawaii; even last month while I was in California
> that band was dead. Let's put some life into it!
>
I can't opperate 30M because I'm only a No-Code, but if someone supplies
my with schematics, I will build a few 30M Xtal Xmitters, and sell _or_
raffle off the xmiters to the group only.
>
> Jeff NH6IL
>
Andy (also known as a few other things)
--
Mesmerized by a decade of hate,           ! AMATEUR =   N8OFS
Flowers and remorse,                      ! ARMY MARS = AAN5HJT
Fading vision lost in time,               ! CB =        THE NEON KNIGHT
Tragedy on course!!! - Frontline Assembly ! HACKER =    TH3 N30N KN16Ht

From [e-mail]  Wed Jan 26 22:40:20 1994
Return-Path: <[e-mail]>
Message-Id: <[e-mail]>
From: [e-mail]
Date: Wed, 26 Jan 94 22:34 EST
Original-From: mvubr!mvjf (James M Fitton [phone])
To: [e-mail]
Subject: 40 Meters


Chuck,
Yes 40m has been RED hot.
QRPers are easily working them.  Never have
imagined this type of DX.

Congrats on your QRQ/QRP/QSO with W6....
Lately some DX signals have sent the NorCal-40 into AGC mode.
The Yugo station running 100W with a 4 el. beam
and the station from Spain with 2 el. and 100w.

On  GLN, the 80 meter QRP net tonight run by NN1G, a
German station checked in !!

Can you imagine that..... on 80 M ?

On 40 m, I worked countries #37 and 38  with the
NorCal-40 running 4 watts.

.



  73/72   Jim Fitton, W1FMR   QRP-NE   [e-mail]

From [e-mail]  Wed Jan 26 23:17:29 1994
Return-Path: <[e-mail]>
    (1.37.109.4/15.6) id AA00631; Thu, 27 Jan 94 04:16:36 GMT
From: [e-mail]
Message-Id: <[e-mail]>
Date: Thu, 27 Jan 94 00:41:00 BST
To: [e-mail]
Subject: QRP Logos
X-Genie-Id: 4615560
X-Genie-From: M.WATT1

Anybody have or seen a PCX, BMP, or other desktop publishing files of QRP
organizations, specifically the QRP ARCI?  If so, please send e-mail to :
[e-mail].  I don't have full internet access, to FTP is not
possible for me.  Thanks for the assistance.

Marty, KN4BH, Jackson, Tennessee


From [e-mail]  Thu Jan 27 08:12:11 1994
Return-Path: <[e-mail]>
Message-Id: <[e-mail]>
From: [e-mail]
Date: Thu, 27 Jan 94 08:02 EST
Original-From: mvubr!mvjf (James M Fitton [phone])
To: [e-mail]
Subject: NC-40


Oooops!
The 40m dx is being worked with the NorCal at 2 Watts, not 4.

Also found an Internet Mail server in my area that charges
$20 every 6 months, with a maximum use of 90 minutes per day.
That sounds incredible!!..... I will have to try it.

With Low Band QRP-DX,  Internet,   and the NorCal-40 ......
Miracles seem commonplace these days....

What fantastic things will happen next ?  Probably Dayton...







  73/72   Jim Fitton, W1FMR   QRP-NE   [e-mail]

From [e-mail]  Thu Jan 27 10:14:14 1994
Return-Path: <[e-mail]>
    id AA04482; Thu, 27 Jan 94 07:14:04 PST
    id AA06586; Thu, 27 Jan 94 07:14:02 PST
    id AA01043; Thu, 27 Jan 94 10:14:01 EST
    id AA17681; Thu, 27 Jan 94 10:13:59 EST
    id AA06389; Thu, 27 Jan 94 10:11:11 EST
Date: Thu, 27 Jan 94 10:11:11 EST
From: [e-mail] (Frank Milos - Sun USOPS CSU Manufacturing Engineering)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: New Book
Classification: Sun Proprietary: Internal Use Only


I got a post card in the mail yesterday advertising a new book
containing mods for the HW-7,8,9. Thought I would pass the info along
in case anyone with the rig had any interest.

Here is the scoop:

THE HW-8 HANDBOOK is a collection of mods for the HW-7, -8, -9 QRP
rig. Over 50 pages of mods and tips.

COST $11.00 (includes first class mail to your door)

Order from     Sunlight Energy Systems
           2225 Mayflower NW
           Massillon,OH 44647

Standard disclaimer - I have no affiliation with Sunlight Energy Systems,
    have not seen the book, but thought I share the information.

72

Frank - NO1E



From [e-mail]  Thu Jan 27 10:40:14 1994
Return-Path: <[e-mail]>
    id AA08024; Thu, 27 Jan 94 07:40:09 PST
    id AA07811; Thu, 27 Jan 94 07:40:07 PST
    id AA03462; Thu, 27 Jan 94 10:40:06 EST
    id AA18169; Thu, 27 Jan 94 10:40:04 EST
    id AA06398; Thu, 27 Jan 94 10:37:16 EST
Date: Thu, 27 Jan 94 10:37:16 EST
From: [e-mail] (Frank Milos - Sun USOPS CSU Manufacturing Engineering)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Re: NC-40
Classification: Sun Proprietary: Internal Use Only


In his mail, Jim, W1FMR, writes:

    "Yes 40m has been RED hot.

    <Stuff Deleted>

    On 40 m, I worked countries #37 and 38  with the
    NorCal-40 running 2 watts."

The NC-40 sounds like a great rig and have gotten confirmation from
Jim Cates that I'm on the list for delivery next month.

I almost worked a 9A2 (don't know what country) on 40M 3 nights ago
with an OHR HP DC xcvr at 1.5 W, but he couldn't quite pull me out of the
mud.

The one thing that seems to always be forgotten is the antenna. I was using
an 80M delta loop fed at the apex (29') and the bottom at ~12. Its hanging
in pine trees that give me a run for my money getting the wire into the
branches every time I try to change toi a different antenna. If I remember
correctly, Jim has in the past used a delta but is now using a Half Square
or Bobtail Curtain. Even under the best of conditions, hunting dx is always
easier if you have a good antenna and there is a big difference working dx with
a dipole at 20 feet and a wire beam up 70 feet.

I remember many years ago one of the magazines had an article about the
importance of the antenna location in working dx and that it could be done
with a simple dipole. Peaking my interest, I read on about all the pileups
this ham worked and the thousands of contacts he made with a simple dipole up
30 feet. The last paragraph was the clincher when he said that his
antenna was located on some tiny island where it was a rare call and he
was one of the only hams. The antenna and location is important
after all.

Have a good day all!

72

Frank - NO1E

From [e-mail]  Thu Jan 27 11:40:13 1994
From: [e-mail] ([e-mail])
Date: 27 Jan 94 16:23:22 GMT
To: [e-mail]
Message-Service: mail
      id AA0115; Thu, 27 Jan 94 11:32:35 -0500
Subject: A cheap L/C meter from frequency measurements
Reply-To: [e-mail]
Return-Path: <[e-mail]>
Message-Id: <[e-mail]>
Content-Type: text

  I've heard that it is possible to build a simple inductance and
capacitance meter by measuring the audio frequency of a LC audio
oscillator.  As I understand it, you use a known L and an
unknown C ( or an unknown L and a known C ) and then measure the
audio frequency generated by the oscillator.  You then plug all the
known values into a formula and solve for the unknown.

Now: Has anyone actually built one of these?  How did it work?  About
how (in)accurate was yours?  Does anyone have a schematic for something
like this?

Yes, I realize that this sort of thing isn't going to have much accuracy.
I'm not trying to measure individual component tolerances, but it
would be nice if I could tell if it was a 47 pf or a 470 pf.

Replies to qrp mailing list or email to [e-mail]

Douglas Quagliana
[e-mail] - I speak for myself, not for AT&T


From [e-mail]  Thu Jan 27 13:20:57 1994
Return-Path: <[e-mail]>
    id AA29019; Thu, 27 Jan 94 13:20:55 -0500
Message-Id: <[e-mail]>
Date: Thu, 27 Jan 94 13:20:55 -0500
From: [e-mail] (CONTRACTOR Larry Keith;653 CCSG/SCT)
Subject: Re: A cheap L/C meter from frequency measurements
To: [e-mail]
Cc: [e-mail]
X-Orig-Date: 27 Jan 94 16:23:22 GMT
X-Orig-From: [e-mail] ([e-mail])
X-Orig-Message-Id: <[e-mail]>

In your message of 27 Jan 1994 at 1307 EST, you write:
>   I've heard that it is possible to build a simple inductance and
> capacitance meter by measuring the audio frequency of a LC audio
> oscillator.  As I understand it, you use a known L and an
> unknown C ( or an unknown L and a known C ) and then measure the
> audio frequency generated by the oscillator.  You then plug all the
> known values into a formula and solve for the unknown.
>
A simpler solution is a 12VAC xfmr hooked in series with a 10 meg
resistor and the unknown  component.  Measure voltage drop across
resistor to get current. Measure voltage drop across unknown
component.  Compute Z = E/I.  Use Z formula to compute capacitance or
inductance.  If 10 meg resistor doesn't work, change to 1 meg, or 100
meg, or 10k....

remember the freq is 60 Hz.


73,

Larry

From [e-mail]  Thu Jan 27 13:43:36 1994
Return-Path: <[e-mail]>
    id m0pPbei-0001SXC; Thu, 27 Jan 94 13:41 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: Re: A cheap L/C meter from frequency measurements
To: [e-mail]
Date: Thu, 27 Jan 1994 13:41:27 -0500 (EST)
Cc: [e-mail] (qrp @think.com)
In-Reply-To: <[e-mail]> from "[e-mail]" at Jan 27, 94 04:23:22 pm
X-Mailer: ELM [version 2.4 PL21]
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YES! I made a similar ckt...1st one uses a bridge ckt and is good only for
caps  ( coils DC ohms messes up the true null in such a ckt) but another
one I did up was as you said...but was a low freq RF job...run to freq
counter etc..

Give me time to do up the 2 diagrams here and I send em out...ok?

--
Randy KA1UNW              If you get a shock while
                         servicing  your  equipment,         "Works for me!"
randy@192.153.4.200             DON'T  JUMP!                     -Pete Keyes
                     You might break an expensive tube!

From [e-mail]  Thu Jan 27 14:30:39 1994
Return-Path: <[e-mail]>
    id AA25403; Thu, 27 Jan 94 14:30:33 -0500
    id AA03699; Thu, 27 Jan 94 14:30:32 EST
Date: Thu, 27 Jan 94 14:30:32 EST
From: [e-mail] (Gary Chatters)
Message-Id: <[e-mail]>
To: uunet!attmail.com![e-mail]
Subject: Re:  A cheap L/C meter from frequency measurements
Cc: [e-mail]

Douglas asks about building an audio oscillator to measure
an unknown L or C.  If you already have a variable audio
oscillator on your test bench, here is a scheme you might try.
I threw it together in about 10 minutes after reading the post
to the list.  However, I have not made any real practical use
of it.

Equipment needed:

    Variable frequency audio oscillator

    AC voltmeter (high impedence)

    A resistor (I used 100K ohm)

    Known L and unknown C or vice versa.

    Bunch of clip leads.

    Frequency counter (optional)

Procedure:

    Hook up L and C in parallel circuit.

    Feed LC circuit from oscillator through the 100k resistor

    Measure the voltage across the LC circuit.

    Tune the oscillator to find a voltage peak.

Results of a test:

    I used an .088 h toroid coil and a 0.056 microfarad mylar cap
    in parallel feed through a 100k resistor.

    Measured resonant frequency: 2281 Hz.

    Using the formula L = 1.0/(4*Pi^2*f^2*C)
    (or L = 1.0/(4.0 * Pi**2 * f**2 * C) for FORTRAN users)
    and the similar formula for C the results are:

            Computed    Labeled
        L    0.0869 h    0.088 h

        C    0.0553 ufd    0.056 ufd

Comments:

    This can be a rather accurate method of measuring unknown
    L or C,  which can make it difficult to use.  I had to
    be within 10% of the resonant frequency to see a reading
    on the meter.  It helped that I knew about where resonance would be.

    You can also measure the Q of the resonant circuit.

Is this of any help?

73,

Gary

From [e-mail]  Thu Jan 27 14:41:53 1994
Return-Path: <[e-mail]>
Message-Id: <[e-mail]>
Date: Thu, 27 Jan 1994 11:40:22 -0800
To: [e-mail]  (F. Kevin Feeney)
From: [e-mail] (Wayne Burdick)
Subject: Re: How's the second batch of NorCal's coming?
Cc: [e-mail]

Kevin Feeney wrote:

>I was wondering if you had any idea what the current status
>of the second batch of Norcals was?

We have all the parts for the NC40's kitted and ready to go, but I'm
hand-delivering the custom boxes and PC boards to Jim Cates (who's mailing
out the kits) next week.  That means first shipments will be the first week
of February.  Sorry for the delay.  (By the way--they're all sold out.)

Let me know how it works (or doesn't--god forbid!) when you get it.

72,
Wayne



From [e-mail]  Thu Jan 27 14:45:03 1994
Return-Path: <[e-mail]>
    (5.61/UUNET-internet-primary) id AAwaru26484; Thu, 27 Jan 94 14:44:54 -0500
    (queueing-rmail) id 144224.28547; Thu, 27 Jan 1994 14:42:24 EST
    id AA13192; Thu, 27 Jan 94 13:08:39 EST
From: [e-mail] ( Jim Osburn          )
Message-Id: <[e-mail]>
Subject: Re: New Book
To: [e-mail] (QRP Mailing List)
Date: Thu, 27 Jan 94 13:08:38 EST
In-Reply-To: <[e-mail]>; from "Frank Milos - Sun USOPS CSU Manufacturing Engineering" at Jan 27, 94 10:11 am
X-Mailer: ELM [version 2.3 PL11]

> Here is the scoop:
>
> THE HW-8 HANDBOOK is a collection of mods for the HW-7, -8, -9 QRP
> rig. Over 50 pages of mods and tips.
>
> COST $11.00 (includes first class mail to your door)
>
> Order from     Sunlight Energy Systems
>            2225 Mayflower NW
>            Massillon,OH 44647
>

I have a copy of that book.
It's not new, I bought it at a hamfest last year.
Mostly it's reprints of articles from various publications.
It's a good book to have if you buy a used HW-8.
It helps in figuring out the mods that have been made and why.

73,

Jim, WD9EYB

From [e-mail]  Thu Jan 27 18:42:29 1994
Return-Path: <auratek!auratek.com![e-mail]>
    (5.61/UUNET-internet-primary) id AAwask29499; Thu, 27 Jan 94 18:42:21 -0500
    (queueing-rmail) id 184014.8934; Thu, 27 Jan 1994 18:40:14 EST
    id AA07159; Thu, 27 Jan 94 15:09:17 EST
Date: Thu, 27 Jan 94 15:09:17 EST
From: [e-mail] (Edward Pacyna)
Message-Id: <[e-mail]>
To: [e-mail], uunet!attmail.com![e-mail]
Subject: Re:  A cheap L/C meter from frequency measurements

Doug

There a numerous ways to measure L and C, and they can give quite accurate
results. Here are a couple that come to mind.

Measuring L
-----------

A couple of years ago, QST published an article for a inductance meter. The
article was by Doug DeMaw was capable of directly reading L values for .1uH
to hundreds of uH and worked as follows.


   Crystal Oscillator--------Parallel L/C Tuned Circuit-------Analog Meter

The crystal oscillator was lightly coupled to a parallel tuned circuit which
consisted of a high value variable capacitor and the unknown L. The capacitor
was varied to find a peak on the meter. The dial was calibrated in uH because
there is one equation for resonance and 2 of the 3 variables were know (F and
C). The ranges were selected by switching different oscillator frequencies.


Another way to measure L is to build a simple oscillator circuit with a
fixed amount of capacitance. Then connect an unknown L and measure the
frequency with a counter or calibrated receiver. Solve the resonance formula
to determine L. You can also measure C values with this approach by using
a known L, some know C and adding in the unknown C and taking before and
after frequency readings (a single formula can be derived for this situation.


BTW, the basic formula is: C = 1 / (L W^2) where W = 2 pie F

A simple version is C = 25330.295 / (F^2 L)   C in pF, L in uH, F in Mhz

Note: The frequencies used in both above techniques need to be appropriate
for the typical values being measured.

Measuring C
-----------

For large vaues (e.g. .01uF to maybe 100uF) you can build a simple NE555
square wave generator. There are several "how to use the NE555" paper back
books with typical circuits. Basically, an R C value determines the freq-
uency. If you use a known R and measure the frequency, you can easily solve
for C.

Most of these books also have a real simple circuit using (3) NE555's that
allows a frequency counter to read C directly. I built one a while back and it
worked quite well and measured C values from a few pF to at least 100uF. It was
also an educational experience as it used the NE555 as a square wave generator,
a one shot and an integrator.

Back issues of QST, Ham Radio and 73 magazine have lots of articles on this
topic.

73

Ed W1AAZ


From [e-mail]  Thu Jan 27 19:37:55 1994
Return-Path: <fmsystm![e-mail]>
    Thu, 27 Jan 94 19:36 EST for Think.COM!qrp
    id m0pPh9L-0000obC; Thu, 27 Jan 94 19:33 EST
Message-Id: <[e-mail]>
From: [e-mail] (Andrew Sargent N8OFS)
Subject: Re: 10.14 mhz xmtrs
To: [e-mail] (Jeff Herman)
Date: Thu, 27 Jan 1994 19:33:27 -0500 (EST)
Cc: [e-mail] (QRP)
In-Reply-To: <[e-mail]> from "Jeff Herman" at Jan 26, 94 07:46:22 pm
Reply-To: [e-mail]
X-Mailer: ELM [version 2.4 PL21]
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 8bit
Content-Length: 2260

> Date: Wed, 26 Jan 94 19:46:22 HST
> From: Jeff Herman <[e-mail]>
> To: [e-mail]
> Subject: Re: 10.14 mhz xmtrs
> In-Reply-To: Your message of Wed, 26 Jan 1994 22:28:16 -0500 (EST)
> Message-Id: <[e-mail]>
> Content-Type: text
>
> Wrong wrong wrong, Andrew! The 10 MHz and 37 MHz xtals were mixed
> to synthesize the 27 MHz signal! Yes, these xtals come from the older
> 23 ch. CB rigs; the 23 xmt and rcv frequencies were gotten (synthesized)
> by the formula: 37-10=27 MHz (and of course 37+10=47 which is filtered
> out). So rather than 23 xmt xtals and 23 rcv xtals (=46) the manufacturers
> were able to synthesize the required frequencies with only 16 xtals.
>
Hmmm...  (I zink vat ve have here iz a failure to communicates)  There
is a difference in terminology between 'synthesised' and 'mixed'.
'synthesised' requires the use of a PLL & VCO.  'mixed' is what you
reffered to above regarding the old 23 CH CB's.  True, it is eiaser
and cheaper to use 16 rocks rather than 46! (including cheaper too!)
Keep in mind that _most_ 23 CH CB's (AM/SSB) had '_wierd_' xtal
filters also (eg. 11.2735 or 10.6935 + a few others depending on
brand and mfgr).
>
> Too bad that out of those 16 xtals only one falls in a ham band: 10.14 mc.
>
Unless you wanted to build a 5X xmitter for 6M!
>
> *****************************************************************************
>
> Commentary:
> It seems that only a small handful of folks on here are homebrewing. Why
> is that? There's so much talk of this kit or that kit, but so few speak
> of building from scratch. Not enough time? Parts too hard to come by?
> I got licensed in '76 but was building stuff (rcvrs) 10 years prior to
> that. Am I too old fashioned to want to see hams still building at
> least their xmtrs? Phooey!
>
> Jeff NH6IL
>
Commentary:
I am _still_ a No-Code and proud of it.  I am not to be confused with
a 2M appliance opperator!

--
Mesmerized by a decade of hate,           ! AMATEUR =   N8OFS
Flowers and remorse,                      ! ARMY MARS = AAN5HJT
Fading vision lost in time,               ! CB =        THE NEON KNIGHT
Tragedy on course!!! - Frontline Assembly ! HACKER =    TH3 N30N KN16Ht

From [e-mail]  Thu Jan 27 20:36:29 1994
Return-Path: <auratek!auratek.com![e-mail]>
    (5.61/UUNET-internet-primary) id AAwask29499; Thu, 27 Jan 94 18:42:21 -0500
    (queueing-rmail) id 184014.8934; Thu, 27 Jan 1994 18:40:14 EST
    id AA07159; Thu, 27 Jan 94 15:09:17 EST
Date: Thu, 27 Jan 94 15:09:17 EST
From: [e-mail] (Edward Pacyna)
Message-Id: <[e-mail]>
To: [e-mail], uunet!attmail.com![e-mail]
Subject: Re:  A cheap L/C meter from frequency measurements

Doug

There a numerous ways to measure L and C, and they can give quite accurate
results. Here are a couple that come to mind.

Measuring L
-----------

A couple of years ago, QST published an article for a inductance meter. The
article was by Doug DeMaw was capable of directly reading L values for .1uH
to hundreds of uH and worked as follows.


   Crystal Oscillator--------Parallel L/C Tuned Circuit-------Analog Meter

The crystal oscillator was lightly coupled to a parallel tuned circuit which
consisted of a high value variable capacitor and the unknown L. The capacitor
was varied to find a peak on the meter. The dial was calibrated in uH because
there is one equation for resonance and 2 of the 3 variables were know (F and
C). The ranges were selected by switching different oscillator frequencies.


Another way to measure L is to build a simple oscillator circuit with a
fixed amount of capacitance. Then connect an unknown L and measure the
frequency with a counter or calibrated receiver. Solve the resonance formula
to determine L. You can also measure C values with this approach by using
a known L, some know C and adding in the unknown C and taking before and
after frequency readings (a single formula can be derived for this situation.


BTW, the basic formula is: C = 1 / (L W^2) where W = 2 pie F

A simple version is C = 25330.295 / (F^2 L)   C in pF, L in uH, F in Mhz

Note: The frequencies used in both above techniques need to be appropriate
for the typical values being measured.

Measuring C
-----------

For large vaues (e.g. .01uF to maybe 100uF) you can build a simple NE555
square wave generator. There are several "how to use the NE555" paper back
books with typical circuits. Basically, an R C value determines the freq-
uency. If you use a known R and measure the frequency, you can easily solve
for C.

Most of these books also have a real simple circuit using (3) NE555's that
allows a frequency counter to read C directly. I built one a while back and it
worked quite well and measured C values from a few pF to at least 100uF. It was
also an educational experience as it used the NE555 as a square wave generator,
a one shot and an integrator.

Back issues of QST, Ham Radio and 73 magazine have lots of articles on this
topic.

73

Ed W1AAZ


From [e-mail]  Thu Jan 27 20:57:03 1994
Return-Path: <fmsystm![e-mail]>
    Thu, 27 Jan 94 19:36 EST for Think.COM!qrp
    id m0pPh9L-0000obC; Thu, 27 Jan 94 19:33 EST
Message-Id: <[e-mail]>
From: [e-mail] (Andrew Sargent N8OFS)
Subject: Re: 10.14 mhz xmtrs
To: [e-mail] (Jeff Herman)
Date: Thu, 27 Jan 1994 19:33:27 -0500 (EST)
Cc: [e-mail] (QRP)
In-Reply-To: <[e-mail]> from "Jeff Herman" at Jan 26, 94 07:46:22 pm
Reply-To: [e-mail]
X-Mailer: ELM [version 2.4 PL21]
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 8bit
Content-Length: 2260

> Date: Wed, 26 Jan 94 19:46:22 HST
> From: Jeff Herman <[e-mail]>
> To: [e-mail]
> Subject: Re: 10.14 mhz xmtrs
> In-Reply-To: Your message of Wed, 26 Jan 1994 22:28:16 -0500 (EST)
> Message-Id: <[e-mail]>
> Content-Type: text
>
> Wrong wrong wrong, Andrew! The 10 MHz and 37 MHz xtals were mixed
> to synthesize the 27 MHz signal! Yes, these xtals come from the older
> 23 ch. CB rigs; the 23 xmt and rcv frequencies were gotten (synthesized)
> by the formula: 37-10=27 MHz (and of course 37+10=47 which is filtered
> out). So rather than 23 xmt xtals and 23 rcv xtals (=46) the manufacturers
> were able to synthesize the required frequencies with only 16 xtals.
>
Hmmm...  (I zink vat ve have here iz a failure to communicates)  There
is a difference in terminology between 'synthesised' and 'mixed'.
'synthesised' requires the use of a PLL & VCO.  'mixed' is what you
reffered to above regarding the old 23 CH CB's.  True, it is eiaser
and cheaper to use 16 rocks rather than 46! (including cheaper too!)
Keep in mind that _most_ 23 CH CB's (AM/SSB) had '_wierd_' xtal
filters also (eg. 11.2735 or 10.6935 + a few others depending on
brand and mfgr).
>
> Too bad that out of those 16 xtals only one falls in a ham band: 10.14 mc.
>
Unless you wanted to build a 5X xmitter for 6M!
>
> *****************************************************************************
>
> Commentary:
> It seems that only a small handful of folks on here are homebrewing. Why
> is that? There's so much talk of this kit or that kit, but so few speak
> of building from scratch. Not enough time? Parts too hard to come by?
> I got licensed in '76 but was building stuff (rcvrs) 10 years prior to
> that. Am I too old fashioned to want to see hams still building at
> least their xmtrs? Phooey!
>
> Jeff NH6IL
>
Commentary:
I am _still_ a No-Code and proud of it.  I am not to be confused with
a 2M appliance opperator!

--
Mesmerized by a decade of hate,           ! AMATEUR =   N8OFS
Flowers and remorse,                      ! ARMY MARS = AAN5HJT
Fading vision lost in time,               ! CB =        THE NEON KNIGHT
Tragedy on course!!! - Frontline Assembly ! HACKER =    TH3 N30N KN16Ht

From [e-mail]  Fri Jan 28 11:43:59 1994
Return-Path: <ccm![e-mail]>
    (Smail3.1.28.1 #2) id m0pPwIN-000MOgC; Fri, 28 Jan 94 08:43 PST
    (Smail3.1.28.1 #1) id m0pPwKk-0000MFC; Fri, 28 Jan 94 08:46 PST
Date: Fri, 28 Jan 94 08:46:14 PST
From: Mark E Gustoff <[e-mail]>
Message-Id: <[e-mail]>
To: [e-mail]
Subject: QRP Plus Features


Text item: Text_1

We've all heard rumors of a QRP version of the
Ten-Tec Scout being announced soon. What would
you all say if it contained a list of features
like below:

Bands: 160-10M w/WARC & 1.8 - 29.7 Gen Coverage
Size: 5-1/2"W x 4"H x 6"D

                On Rear Panel:

Power:      12VDC 2.5mm X 5.5mm power plug
            1A Transmit
            140mA Receive
Fuse:       3AG 4A fast blow fuse
RF Pwr:     Pot adjusts from 0-5W
Keying:     1/4" jack for straight key
            3.5mm stereo jack for paddles
Microphone: 3.5mm stereo jack
Mic Gain:   Adjustable
Antenna:    BNC connector for RX/TX
            Separate RX antenna jack
Sidetone:   Adjustment with level that tracks the
            front volume control.


                On Front Panel:

LCD Display (Resolution to 6 digits)
Pwr/Volume Knob
Main VFO Knob
Power/S Meter
Earphone Jack (3.5mm)
Memory Button (20 memories)
Tuning Speed Button (Fast/Normal)
20dB Attenuator Switch
3-way Transceive/RIT/Split Switch
Filter Button (100hz-2400hz variable bandwidth)


This radio is single conversion synthesized digital
with 6 pole crystal ladder filter, and SCAF digital
filters at audio. Transmitter output is via a power
MOSFET.

Its modes are full break-in CW and SSB. It contains
lithium battery backup of memory settings.

The size makes it a nice fit, even in newer compact
automobiles if you desire a mobile setup.

Sorry, this is not the new rumored QRP rig by Ten-Tec.

However, it is some serious competition for Ten-Tec.
The rig is known as the QRP-PLUS. I've gleened the
above data from the instruction manual I just received
in the mail.

The radio sells for $595.

If you're interested, call or write for brochure on
the QRP PLUS

                Index Laboratories
                9318 Randall Dr. NW
                Gig Harbor, WA 98332

                [phone]

P.S. I  am not affilliated with Index Laboratories in
     any capacity de WO7T/QRP


[e-mail]

From [e-mail]  Fri Jan 28 12:07:39 1994
Return-Path: <[e-mail]>
    id AA02477; Fri, 28 Jan 94 11:56:29 -0500
Reply-To: [e-mail]
  (5.65c/IDA-1.4.4); Fri, 28 Jan 1994 07:18:19 -0500
Date: Fri, 28 Jan 1994 07:18:19 -0500
From: Brad Mitchell <[e-mail]>
Message-Id: <[e-mail]>
To: [e-mail], [e-mail]
Subject: Re: A cheap L/C meter from frequency measurements

>
>   I've heard that it is possible to build a simple inductance and
> capacitance meter by measuring the audio frequency of a LC audio
> oscillator.  As I understand it, you use a known L and an
> unknown C ( or an unknown L and a known C ) and then measure the
> audio frequency generated by the oscillator.  You then plug all the
> known values into a formula and solve for the unknown.
>
> Now: Has anyone actually built one of these?  How did it work?  About
> how (in)accurate was yours?  Does anyone have a schematic for something
> like this?
>
> Yes, I realize that this sort of thing isn't going to have much accuracy.
> I'm not trying to measure individual component tolerances, but it
> would be nice if I could tell if it was a 47 pf or a 470 pf.
>
> Replies to qrp mailing list or email to [e-mail]
>
> Douglas Quagliana
> [e-mail] - I speak for myself, not for AT&T
>
>

I just built the Doug Demaw Cap meter and it seems to work very good.
The only problem is is that I need to find a 50 ua meter to complete
the project, but in the mean time, I'll use my digital ua meter to
suffice that I won't use the wrong cap in a project. This meter uses
a 2-3mhz oscillator and a fixed inductance to cause resonance, or max current
flow at 1000pf (The intended max measurment)
 It also has been designed to distribute the capacitance
measurements uniformly over the 50 ua range, or at least somewhat uniformly.
I don't remember what year/month the meter is, but I'll look tonight.
There is also another article that Doug Demaw wrote for an inductance meter
as well, and I have that dog eared as well. I'll try to get that info soon.
73
 -----------------
|  ___  ________  |    Bradley S. Mitchell      WB8YGG
| |  / /        | |    Eastman Kodak Company
| | / /         | |    KEMD Electronic Products
| |< < K O D A K| |    Circuit Board Assembly Dept. 606 Test Engineering
| | \ \         | |    901 Elmgrove Road Rochester, N.Y. 14653-5211
| |__\ \________| |    [phone], FAX [phone]
|                 |    INTERNET:   [e-mail]
 -----------------


From [e-mail]  Fri Jan 28 14:17:44 1994
Return-Path: <[e-mail]>
    id AA18885; Fri, 28 Jan 94 09:17:20 HST
    id AA08033; Fri, 28 Jan 94 09:17:20 HST
Date: Fri, 28 Jan 94 9:17:19 HST
From: Jeff Herman <[e-mail]>
To: [e-mail]
Cc: [e-mail], [e-mail], [e-mail]
Subject: L/C meters
Message-Id: <[e-mail]>

All these neat ideas for measuring L and C are great! And here I've been
trying to determine the values of variable caps by measuring the plate
area and dx between plates; sheesh! I'm still perplexed as to why cap
manufacturers don't indicate the rane of values of a variable cap on the
body of the cap itself.
Anyway, thanks Gang for all the great ideas.

Jeff NH6IL
Vietnamese proverb: If you study you will become what you wish; if you do
                    not study you will never become anything.

From [e-mail]  Fri Jan 28 14:58:17 1994
Return-Path: <[e-mail]>
Message-Id: <[e-mail]>
   with BSMTP id 1913; Fri, 28 Jan 94 11:58:23 PST
Date:    Fri, 28 Jan 94 11:57 PST
To: [e-mail](QRP)
From: Michael Stein                        <[e-mail]>
Subject: Re: 10.14 mhz xmtrs

> Hmmm...  (I zink vat ve have here iz a failure to communicates)
> There is a difference in terminology between 'synthesised' and
> 'mixed'.  'synthesised' requires the use of a PLL & VCO.

Perhaps in advertising, but not in reality (in the field).

The old CB's used a simple mixing scheme to generate their
frequencies, however this is/was a valid (incoherent) synthesis
technique and was used for many purposes other than CBs before
the current PLL & Coherent synthesis became popular (or
practical/known).

There are many frequency synthesis techniques other than the PLL
which most people have seen.  Some of these techniques include
brute-force, harmonic, double-mix, triple-mix, and
double-mix-divide.  These have different trade-offs than PLLs.
These usually cost more...

From [e-mail]  Fri Jan 28 15:11:40 1994
Return-Path: <auratek!auratek.com![e-mail]>
    (5.61/UUNET-internet-primary) id AAwavo23958; Fri, 28 Jan 94 15:11:14 -0500
    (queueing-rmail) id 141745.6193; Fri, 28 Jan 1994 14:17:45 EST
    id AA17901; Fri, 28 Jan 94 13:52:25 EST
Date: Fri, 28 Jan 94 13:52:25 EST
From: [e-mail] (Edward Pacyna)
Message-Id: <[e-mail]>
To: uunet!Think.COM![e-mail]
Subject: NN1G Bake-Off
Cc: [e-mail]


I continue to make more changes to the NN1G Mark II that I am building. The
most recent is to the band pass filter between the antenna and RX mixer. The
problem here is the use of the IF transformers in this circuit. The objective
of the filter is to provide selectivity to keep strong out of band signals
from overloading the mixer and eliminate the mixer's image response. At the
same time, insertion loss needs to be kept to a minimum. By using the IF
transformers, the best you could hope for is a very compromised result. This
is because proper design requires specific conditions of loading, coupling,
design Q etc.. Pre-selection and band pass filter design is well covered in
Solid State Design for the Radio Amateur (Appendix and chapter on advanced
receiver concepts). By using the IF transformers, you do not know or can you
control the important parameters to design a good filter. For example, the
primary to secondary turns ratio is fixed at 7:1 ( Z ratio of 49:1). So your
50 ohm antenna loads the first tuned circuit to 2,450 ohms (50 x 49) and the
mixer loads the second tuned circuit to 147,000 ohms (3000 x 49). Each tuned
circuit should have the same loading and it is determined by the required
filter response and components. Then, the mixer and antenna should be matched
for maximum power transfer.

Turns out the IF transformer is not even correct for use on the output of the
IF amp.. The MC1350 gain (and stability) is determined by the load it sees.
At 10Mhz, around 6 to 8K produces about 50dB of gain. Higher loads result in
amp. regeneration, increased noise and oscillation. With a 49:1 ratio, the
product detector's 1500 ohm input presents a load of 73,500 ohms to the IF
amp.! This is why it was necessary to include a swamping resistor to the
circuit.

I have replaced the specified transformers with toroids and capacitors.

How much difference in performance will there be between a stock NN1G and
one built by the book? While exacting measurements will surely favor the
theory, will the changes be apparent in use?

I would be very interested is comparing my completed unit to a stock NN1G.
I would just like to do some simple A vs B testing in the following areas.
-Stability
-Weak signal reception (noise floor)
-Weak signal reception near strong signal
-Reception of multiple strong signals
-Selectivity
etc..

Anyone in the Boston area with a 40M stock NN1G willing to help test?

73

Ed W1AAZ






From [e-mail]  Fri Jan 28 19:18:07 1994
Return-Path: <[e-mail]>
    id AA20210; Fri, 28 Jan 94 18:16:07 CST
Date: Fri, 28 Jan 94 18:16:07 CST
From: [e-mail] (Michael S. Dooley)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Newsletters

Have you guys gotten your QRPp and QRP Quarterly newsletters?  I
haven't seen mine lately and am wondering if I missed them or am
losing my mind... hmmm... the latter IS a possibility...
Mike Dooley KE4PC
[e-mail]
Princeton, Texas

From [e-mail]  Fri Jan 28 22:23:54 1994
Return-Path: <[e-mail]>
    id AA18332; Fri, 28 Jan 94 22:20:19 EST
Date: Fri, 28 Jan 1994 22:20:19 -0500 (EST)
From: "John A. Evans" <[e-mail]>
Subject: Re: Newsletters
To: "Michael S. Dooley" <[e-mail]>
Cc: [e-mail]
In-Reply-To: <[e-mail]>
Message-Id: <Pine.3.89.9401282250.A17897-0100000@explorer>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Content-Length: 1231



On Fri, 28 Jan 1994, Michael S. Dooley wrote:

> Have you guys gotten your QRPp and QRP Quarterly newsletters?  I
> haven't seen mine lately and am wondering if I missed them or am
> losing my mind... hmmm... the latter IS a possibility...
> Mike Dooley KE4PC
> [e-mail]
> Princeton, Texas
>

Have not received any QRP Quarterly since the July issue, so I wondered
if I got dropped from the system.  As for QRPp, I just became a member so
don't know when to expect it.  Both seem to be great pubs though.  Just
what I want to dive into after completing my MS thesis. &^)

73s
john

-------------------------------------------------------------------------------
John A. Evans, Capt, USAF                     "My number one goal as a
VHDL/EDA Engineer                              runner is to live long enough
N3QOO Tech Plus !!!                            to place in my age group!!!"

[e-mail]                              Linux - the OS of choice !!
-------------------------------------------------------------------------------
Once data encryption is outlawed, only outlaws will have data encryption !!!
-------------------------------------------------------------------------------


From [e-mail]  Sat Jan 29 00:32:00 1994
Return-Path: <[e-mail]>
    id AA13523; Fri, 28 Jan 94 21:30:50 PST
Date: Fri, 28 Jan 94 21:30:50 PST
From: [e-mail] (Doug Hendricks)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: QRPp Mailing Date

The mailing dates for QRPp are March 1, June 1, Sept. 1 and Dec. 1.  The March
issue is just about finished and I know you guys are anxious, but hey, give
me a little slack!  (GRIN).   I will promise that the March issue will mail
before March 1st.  I too am wondering where my QRP Quarterly is.  CUL, 72,
Doug

From [e-mail]  Sat Jan 29 00:45:42 1994
Return-Path: <[e-mail]>
    for [e-mail] id AA07458; Fri, 28 Jan 94 21:45:38 -0800
    for @sgi.sgi.com:[e-mail] id AA23140; Fri, 28 Jan 94 23:45:35 -0600
    for @sgidal.dallas.sgi.com:[e-mail] id AA25491; Fri, 28 Jan 94 23:45:35 -0600
Date: Fri, 28 Jan 94 23:45:35 -0600
From: [e-mail] (Chuck Adams)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Publications


Gang,

Friday nite, 1/28/94, no QQ from QRP ARCI.

QRPp will not be out til March 1994.

BUT, I did get in the box, just 30 minutes ago (near midnight),
the latest and greatest xcvr from MXM Industries.  This is for
20M and I'll have it going by Sunday.  If you want to try a
schedule, send me email.  Of course, not during the period when
Dallas will beating up on the Buffalo Bills.  :-)  Joking gang,
just joking.  I'm still a Bears fan.

Everybody stay warm.  We're expecting snow here in Dallas.  We've
had snow the last weekend in Oct, Nov, Dec, and now Jan.  Hope
we're through in Feb.

dit  dit   bcnu agn

Chuck Adams  K5FO  CP-60 wpm
[e-mail]




From [e-mail]  Sat Jan 29 07:15:31 1994
Return-Path: <nshore!seastar![e-mail]>
    id AA02385; Sat, 29 Jan 94 07:15:23 -0500 (from nshore!seastar!jjw for [e-mail])
    id m0pQEQj-0001AIC; Sat, 29 Jan 94 07:05 EST
    id m0pPv0R-0000nWC; Fri, 28 Jan 94 09:21 CST
Message-Id: <[e-mail]>
From: [e-mail] (John Welch)
To: [e-mail]
Date: Fri Jan 28 09:21:10 1994

Newsgroups: qrp
Path: jjw
From: [e-mail] (John Welch)
Subject: 'Synthesized' radios (was 10.14 mhz xmtrs)
Reply-To: [e-mail] (John Welch)
Organization: Welch Research.
Distribution: local
Date: Fri, 28 Jan 1994 15:21:07 GMT
Message-ID: <[e-mail]>
Followup-To: qrp
References: <[e-mail]>
Lines: 18

As quoted from <[e-mail]> by nshore!usenet.INS.CWRU.Edu!fms.com!andrews (Andrew Sargent N8OFS):

> Hmmm...  (I zink vat ve have here iz a failure to communicates)  There
> is a difference in terminology between 'synthesised' and 'mixed'.
> 'synthesised' requires the use of a PLL & VCO.  'mixed' is what you
> reffered to above regarding the old 23 CH CB's.  True, it is eiaser
> and cheaper to use 16 rocks rather than 46! (including cheaper too!)
> Keep in mind that _most_ 23 CH CB's (AM/SSB) had '_wierd_' xtal
> filters also (eg. 11.2735 or 10.6935 + a few others depending on
> brand and mfgr).

    There *is* a different way to have a 'synthesized' radio - use
a Direct Digital Synthesizer (DDS).  Requires no PLL or VCO, yet is
considered 'synthesized'.  BTW, they work quite well not only for
radios but for home-built test equipment.

--
John Welch, N9JZW


From [e-mail]  Sat Jan 29 07:24:10 1994
Return-Path: <[e-mail]>
Date: Sat, 29 Jan 94 07:30:06 EST
From: [e-mail] (Bob Applegate)
        id AA05356 for [e-mail]; Sat, 29 Jan 94 07:30:06 EST
Message-Id: <[e-mail]>
To: [e-mail]
Subject: 20m & 40m rig designs?

Hi Gang,

I'm looking for a source of schematics for a 20m & 40m QRP rig.  These
are the features I'd like to have:

   20 or 40 meter coverage with a flip of a switch.

   VFO tuning of the CW portions of the bands, plus RIT.

   Power ouput in the 2 watt range (no QRPppppp...).

   Decent receiver (no DC designs).

Do any of you know if such an animal has been published?  Has anyone
homebrewed this sort of design?

Thanks es 73,
Bob, WA2ZZX


From [e-mail]  Sat Jan 29 15:45:32 1994
Return-Path: <[e-mail]>
Date: Sat, 29 Jan 94 20:33:47 GMT
Message-Id: <[e-mail]>
From: [e-mail] (Dick G0BPS)
Reply-To: [e-mail]
To: [e-mail]
Subject: Scout wanted
X-Mailer: PCElm 1.08
Lines: 12

HI gang,
After my msg abt vacation in Dom Rep (HI) and perhaps Haiti(HH)
I am getting a little despondant. It appears that I may not get a
licence, from comments made. Oh well.... If I can I would like to
take a Scout 515, they can be wound down to 4watts but also the
50 will be usefull on SSB. So,......

Wanted loan or buy.... Scout 515 with lots of band modules.
Guaranteed to return it if loaned. Many friends on here just ask
for comments.
72 de Dick
Dick G0BPS

From [e-mail]  Sat Jan 29 19:36:37 1994
Return-Path: <[e-mail]>
    id m0pQQ7P-0001nfC; Sat, 29 Jan 94 19:34 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: oops! Thats qrp
To: [e-mail] (qrp @think.com)
Date: Sat, 29 Jan 1994 19:34:26 -0500 (EST)
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Content-Length: 895


I was on 3700 and 3710kc tonite, and YES indeed, there is a Novice Roundup
going on.
While on 3710, K3KMO leapt upon me as I was tuning up my 6AG7 and figgered I
was a Novice or tech with his fingers stuck in the holes of a rig....
 (getting tuned up on such a rig, it makes some starnge noises)...as I was
breifly on 3700kc too, but being real busy, I bailed out, and went to 3710.

Well, we had a nice breif qso, as he was OUT to GET Novices! And as I was
...well, what ever I am, with a wooden board full of Fhanstock clips and
it transmits....
... I was maybe too much for him!!  Yark! yark!

He's gonna get a card ANYway!


--
Randy KA1UNW              If you get a shock while
                         servicing  your  equipment,         "Works for me!"
randy@192.153.4.200             DON'T  JUMP!                     -Pete Keyes
                     You might break an expensive tube!

From [e-mail]  Sat Jan 29 21:41:25 1994
Return-Path: <[e-mail]>
    id AA11260; Sat, 29 Jan 94 21:41:21 -0500
    id AA01580; Sat, 29 Jan 94 21:41:19 EST
Date: Sat, 29 Jan 94 21:41:19 EST
From: [e-mail] (Gary Chatters)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Mobile CW (Was: oops! that's qrp)

Randy writes:

>While on 3710, K3KMO leapt upon me as I was tuning up my 6AG7 and figgered I
>was a Novice or tech with his fingers stuck in the holes of a rig....

Operating CW mobile from his motorcycle?  Maybe from the van in
this weather. :-)

[I know this is getting off on a tangent but:]  I was never such a good
CW operator that I would even really think of doing CW mobile, but I really
do like to see people do things like that to show it can be done.

How many in this group do CW mobile (not necessarily motorcycle)?

Hmmmm, I guess the appropriate activity for this group would be
bicycle QRP CW mobile.  Now, there's a project for next summer.  :-)


73,

Gary

From [e-mail]  Sun Jan 30 03:04:09 1994
Return-Path: <[e-mail]>
    id m0pQX6V-0001nyC; Sun, 30 Jan 94 03:01 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: Re: Mobile CW (Was: oops! that's qrp)
To: [e-mail] (Gary Chatters)
Date: Sun, 30 Jan 1994 03:01:57 -0500 (EST)
Cc: [e-mail] (qrp @think.com)
In-Reply-To: <[e-mail]> from "Gary Chatters" at Jan 29, 94 09:41:19 pm
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Content-Length: 750

>
> Operating CW mobile from his motorcycle?  Maybe from the van in
> this weather. :-)
>
He did not sign mobile.... but it was indeed k3kmo , as he sent it several
times.

Wait! Is that the guy who's been doing CW on a 'cycle? Oh my...no WONDER
every now and then the cw would be....well....like going over some bumps!

OH my goodness! whats he doing out in this weather on a cycle?...well you
said Van...   boy, he sure came in good, for what ever ant he must have
had to have...

--
Randy KA1UNW              If you get a shock while
                         servicing  your  equipment,         "Works for me!"
randy@192.153.4.200             DON'T  JUMP!                     -Pete Keyes
                     You might break an expensive tube!

From [e-mail]  Sun Jan 30 04:13:03 1994
Return-Path: <[e-mail]>
    id AA14461; Sun, 30 Jan 94 01:11:53 PST
Date: Sun, 30 Jan 94 01:11:53 PST
From: [e-mail] (Doug Hendricks)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: March QRPp Table of Contents

Here is the final table of contents for the March issue of QRPp, Journal of
the NorCal QRP Club.  It will be mailed before March 1st.  If you are
interested in subscribing, send $5 for 4 issues per year to Jim Cates,
WA6GER, 3241 Eastwood Rd., Sacramento, CA 95821.  That will make you a member
of NorCal.  Please include your name, call & address.  Foreign subscriptions
are $15 per year, but are mailed airmail.  This issue is 72 pages.

From the Editor, Doug Hendricks, KI6DS                          3
Low Cost Wattmeter, Richard Urmonas, VK3DRU                     4
"Incidentally, What is a 10-10 Award", Duane Mantick, WB9OMC    4
Characterizing Station Performance, Howie Cahn, WB2CPU          5
QRP Club List, Chuck Adams, K5FO                                6
HW8 + T50-6 + ECG488 = 5 Watts, Gary Borich, W5UDV              10
NN1G Up and Running, Paul Mackanos, K2DB                        12
QRP = Cross Country Skiing, Kalman Landon, WD6CZI               13
TenTec Kits, Jeff Gold, AC4HF                                   14
ARCI Sprint, Peter Hardie, VE5VA                                14
CQ-WW-CW Results for AA2U, Randy Rand, AA2U                     15
MI QRP Contest, Brad Mitchell, WB8YGG                           15
Michigan QRP Contest, Jeff Gold, AC4HF                          16
RadioKit QRP20, A Review, Jeff Gold, AC4HF                      16
Hambrew & QRPp Review, Chuck Adams, K5FO                        17
Kits vs. Homebrew, Gary Diana, N2JGU                            18
SSB Contesting in ARRL Sweepstakes, Jeff Gold, AC4HF            19
Building the NN1G Mark II, Brad Mitchell, WB8YGG                19
CMOS Super Keyer II, A Review, Jeff Gold, AC4HF                 20
SS '93, Chuck Adams, K5FO                                       21
93 Sweepstakes Report, Warren Lewis, KD4YRN                     23
93 Sweepstakes, Bob Applegate, WA2ZZX                           23
My Favorite CW Contest, Jeff Gold, AC4HF                        23
My Account of SS, Mark Cronenwett, KA7ULD                       24
Another SS Story, Ron Majewski, WB8RUQ                          24
93 SS, Greg Taylor, KD4HZ                                       25
TenTec Scout - QRP???, Dave Redfern, N4ELM                      25
MFJ-1786 HI-Q Loop, David Baker, AB5PI                          25
MFJ-1786 HI-Q Loop, John Welch, N9JZW                           27
My Version of the MFJ Loop, Tom Farish, KJ5LT                   28
Bagging the NorCal 40 Kits, Jim Cates, WA6GER                   29
NorCal 40 Completed, Rich Mulvey, N2VDS                         30
Evaluation of the NorCal 40, Jeff Gold, AC4HF                   31
NorCal Revisited, Jeff Gold, AC4HF                              32
A Good Laugh with the NorCal 40, Jeff Gold, AC4HF               32
Fix for Weak Audio in NC40, Wayne Burdick, N6KR                 33
NA Sprint with the NC40, Ron Majewski, WB8RUQ                   33
QRP Directional Wattmeter/Tuner, Jim Pepper, W6QIF              34
Battling the Great QRP Epidemic, J.C. Smith, KC6EIJ             35
NorCal 40 Mods, Bob Warmke, W6CYX                               37
Extra Audio for the NC40, Stan Cooper, K4DRD                    38
My NorCal 40, Todd Nichols, KB0HQU/VE3                          39
NorCal 40 Full Band Modification, Terry Young, KC6SOC           40
QRP Plus Rig Review, Andrew Comas, KF2JH                        41
A 30 Meter VXO Transmitter, Roy Gregson, W6EMT                  42
The K6LV Homebrew Paddles, Doug Hendricks, KI6DS                46
Tidbits, Hints for the QRPer, Mark Cronenwett, KA7ULD           47
RadioKit Notes, Chuck Adams, K5FO                               52
RadioKit Review, Ed Pacyna, W1AAZ                               53
NN1G Notes, Ed Pacyna, W1AAZ                                    55
A Curtis Keyer PCB, The Hard Way, Mac McClurkin, W7JDZ          56
350mW 40M CW Transmitter, Antonio Galindo, AC6G                 58
Winter Contesting, Rusty Smith, KD4GLC                          61
Operating in Barbados, Greg Taylor, KD4HZ                       61
Call For Articles, Doug Hendricks, KI6DS                        62
NorCal November Meeting, Jim Cates, WA6GER                      63
NorCal December Meeting, Doug Hendricks, KI6DS                  63
NorCal January Meeting, Doug Hendricks, KI6DS                   65
The MXM Transceiver Kit, Chuck Adams, K5FO                      67

Hope you enjoy this issue.  By the way, the club now has 285 members,
and sorry, but the NorCal 40 second run of 100 kits is sold out.  (In less
than 1 month).  There will not be any more produced by the club, as we are
moving on to our next club project, the Sierra All-Band CW Transceiver, a 6
band rig being designed by Wayne Burdick, N6KR.
72, Doug, KI6DS, Editor, QRPp, Journal of the NorCal QRP Club

From [e-mail]  Sun Jan 30 09:47:23 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Sun, 30 Jan 1994 08:50:04 CST
Date: Sun, 30 Jan 1994 08:50:04 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: cw/mobile/qrp
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: JMG
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-Transfer-Encoding: 7BIT

HI,

I have been operating CW/Mobile/QRP for a couple of years now. I have a
Ten Tec Argonaut 509, a keyer I built from the ARRL Handbook, and an
audio filter that is from the Ten Tec design, but home built, because I
couldn't find anyone to sell me one built. I have added some noise
supression via Radio Shack kit.

I use the Schurr solid brass, hand made mini-paddle on an old army? leg
brace. .the paddles are the best I ever used.

Sometimes when I really get into it, and I am in the middle of the
busiest street in town, I just pull off into a parking lot. People are
always stopping by to see what I am doing.. the car is now a little bit
noticable with the Texas Bugcatcher on the back of a small Acura
Integra. Previously I used a set of whips.  The Bug Catcher seems to
make the QRP up to 100 watt level.

I ofter work a QSO on the way to work (7 miles), at lunch (a couple of
miles then I stop where I am going to eat and finish the QSO) and on the
way home.

I have only been a ham for about 2 years, I certainly am no CW whiz..
tell you what though.. it realy gets you copying in your head after a
while.

72

Jeff, AC4HF

From [e-mail]  Sun Jan 30 16:05:20 1994
Return-Path: <[e-mail]>
    for [e-mail] id AA04658; Sun, 30 Jan 94 13:05:14 -0800
    for @sgi.sgi.com:[e-mail] id AA28256; Sun, 30 Jan 94 15:05:06 -0600
    for @sgidal.dallas.sgi.com:[e-mail] id AA02394; Sun, 30 Jan 94 15:05:05 -0600
Date: Sun, 30 Jan 94 15:05:05 -0600
From: [e-mail] (Chuck Adams)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Hambrew


Gang,

last day of January and no January issue of Hambrew received.
it's supposed to have several articles on the new MXM XCVR.
i should have the 20M version finished shortly.  i already have
the 40 meter version.  this is the $149.95 + $5.00 rig that
i posted last year.  time flies when you're having fun.


p.s. 1/31/94 0521Z worked an F6 on 40M with 0.95W during their
test.  band was HOT HOT HOT......

dit  dit
Chuck Adams  K5FO  CP-60 wpm
[e-mail]




From [e-mail]  Sun Jan 30 16:16:59 1994
Return-Path: <[e-mail]>
    for [e-mail] id AA05797; Sun, 30 Jan 94 13:16:54 -0800
    for @sgi.sgi.com:[e-mail] id AA28277; Sun, 30 Jan 94 15:16:51 -0600
    for @sgidal.dallas.sgi.com:[e-mail] id AA02433; Sun, 30 Jan 94 15:16:51 -0600
Date: Sun, 30 Jan 94 15:16:51 -0600
From: [e-mail] (Chuck Adams)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Mobile CW


Jeff and others have posted on mobile CW.

If you have never tried it, you may want to take several small
steps first.

1.  Install rig in mode of transportation first.  Volumes have
    been written on this.  Use same for listening to and from
    work.  JUST LISTEN.  This will help you work on copying in
    the head and concentrate on driving.  It's obvious which of
    these is life threatening.  You'll find out several things first.
    You only need to catch key words - name, qth, rst, wx, ....
    Think about what you would say on your turn to transmit, if you
    were in QSO.

2.  You'll probably hear the majority of people on the same time
    of day, frequency, etc.  You'll know their life history as well
    as your own, their likes and dislikes, rigs, kids, etc.

3.  Practice on remembering geographical areas heard, etc.

4.  If the antenna receives well, it'll probably xmit well also.
    Check the SWR when you install the rig and monitor it.  It will
    change over time and wx conditions.

I did this on 10M mobile during the last sunspot peak.  In fact,
if you want to practice sending while driving, install 10M and
practice on the low end of the band.  It'll do two things.  Give
you practice without too large an audience and you'll be doing your
part to keep the 'free banders' (individuals who don't give a toot
about rules and regulations) away.  Maybe they'll think you're some
government agency, since we know what their stand on code is.  :-)
The 'free banders' that is.

I have been hauling the NN1G on 40M to and from work with a
hamstick for an antenna.  Works quite well.  Makes the 30 to 45 drive
pass more quickly and I may try working with 1W mobile, but I don't
expect too much success.  I'm too spoiled with the 250' long wire.

Just my two cents worth.

Anyone remember the sunspot peak in 1957-1960 timeframe?  Now
those were the days.  The next peak in 3 to 4 years.  Don't let
the rest of the world get the 15M and up while the spots are down.


dit   dit


Chuck Adams  K5FO  CP-60 wpm
[e-mail]




From [e-mail]  Sun Jan 30 22:13:07 1994
Return-Path: <[e-mail]>
    for [e-mail] id AA27639; Sun, 30 Jan 94 19:13:02 -0800
    for @sgi.sgi.com:[e-mail] id AA28480; Sun, 30 Jan 94 21:12:59 -0600
    for @sgidal.dallas.sgi.com:[e-mail] id AA03417; Sun, 30 Jan 94 21:12:59 -0600
Date: Sun, 30 Jan 94 21:12:59 -0600
From: [e-mail] (Chuck Adams)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Dayton


Gang,

Dayton is coming up pretty soon.

This is first call for all the qrpers that are going to Dayton.

email me the following information:

name
call
days you'll be there


First pass at a plan is to meet at the QRP ARCI hospitality suite
on Saturday nite at 7pm or 8pm.  Hopefully a cross-section of this
group will be there and we can meet face-to-face.

Be there and be square.....  :-)

dit  dit

Chuck Adams  K5FO  CP-60 wpm
[e-mail]




From [e-mail]  Mon Jan 31 07:40:33 1994
Return-Path: <[e-mail]>
Date: Mon, 31 Jan 94 07:46:32 EST
From: [e-mail] (Bob Applegate)
        id AA10315 for [e-mail]; Mon, 31 Jan 94 07:46:32 EST
Message-Id: <[e-mail]>
To: [e-mail]
Subject: NN1G specs

Can someone mail me the specs for the NN1G rig again?  Someone was asking
about them, but I didn't keep a copy around.

Thanks,
Bob, wa2zzx

From [e-mail]  Mon Jan 31 09:20:30 1994
Return-Path: <[e-mail]>
    id HAA00518; Mon, 31 Jan 1994 07:19:24 -0700
    id AA13045; Mon, 31 Jan 94 07:21:25 -0700
Date: Mon, 31 Jan 94 07:21:25 -0700
From: [e-mail] (Tom J Farish)
Message-Id: <[e-mail]>
To: [e-mail], [e-mail]
Subject: Re:  Mobile CW

Good suggestions, but you left off #5:  Don't wait 'till the last
minute to fill out those organ donor cards!

Geez...I can't send decent CW and drink coffee at the same time
without having an accident!

Tom
KJ5LT


From [e-mail]  Mon Jan 31 09:51:30 1994
Return-Path: <ccm![e-mail]>
    (Smail3.1.28.1 #2) id m0pQzy6-000MNYC; Mon, 31 Jan 94 06:51 PST
    (Smail3.1.28.1 #1) id m0pR00p-0000RRC; Mon, 31 Jan 94 06:54 PST
Date: Mon, 31 Jan 94 06:54:02 PST
From: Mark E Gustoff <[e-mail]>
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Re: Scout wanted

ARRL is selling one, after having completed review on it a
couple of months ago. Look in Feb QST for more details. They
were taking bids starting around $430 I believe. Included
around 5-8 band modules I believe.

Good Luck..............

de WO7T/QRP


================================================================




HI gang,
After my msg abt vacation in Dom Rep (HI) and perhaps Haiti(HH)
I am getting a little despondant. It appears that I may not get a
licence, from comments made. Oh well.... If I can I would like to
take a Scout 515, they can be wound down to 4watts but also the
50 will be usefull on SSB. So,......

Wanted loan or buy.... Scout 515 with lots of band modules.
Guaranteed to return it if loaned. Many friends on here just ask
for comments.
72 de Dick
Dick G0BPS

From [e-mail]  Mon Jan 31 11:22:21 1994
Return-Path: <[e-mail]>
    id AA14170; Mon, 31 Jan 94 11:22:09 -0500
Date: Mon, 31 Jan 94 11:22:09 -0500
From: [e-mail] (Duane P Mantick)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: reminder


Here is a reminder that this coming weekend, Feb. 5th and 6th, is the
10-10 International Spring phone contest.  While I realize that y'all
tend to be devoted fans of CW, many *have* expressed an interest in
SSB doing QRP.

I have run my few measly watts during several of these contests and
while not winning, have made some DX QSO's and picked up countries,
counties, states, etc. for various award tallies.

If any of you ARE 10-10 members, you doubtless are already aware
of the specifics.  For those who aren't, the contest runs from
0000 UTC Feb. 5th (which in my case is about 7 PM or something like
that Friday evening) until 2400 UTC on Feb. 6th (which in my case is about
7 PM or so Sunday evening), or in short for 48 hours.

Those of us who are 10-10ers count other members for 2 points and
those without a 10-10 number are good for 1 point.  That basically sums
up the scoring - very simple.

I should be running for much of the weekend and can be found somewhere
between 28.3 and 28.5 MHz, screaming CQ's into the ether.....  :-)

BTW, I have had very good cooperation from the other contesters on
running low power.  Sometimes I give my phonetics as whiskey bravo
nine one masochistic communicator, as a side effect of doing a
contest in somewhat-QRPmode.  :-)

(I'd like to be able to get them to add another scoring category to
this contest, something like stations under 25 watts or under 10 watts
or whatever can sign " /QRP" and then count for 5 points for 10-10 members
and perhaps 3 points for non-members.  If enough QRP types get on
the air and make themselves heard - bad pun that this is - there
will be that much more leverage to do so.

Even if the ONLY benefit of this ends up being that people will
listen more closely for QRP stations, and pileups will take time out to
ASK for QRP stations more often......then the effort would be worthwhile.)

OK, now on the more selfish side of this (what, you thought my goals
were purely philanthropic in nature?  :-)  ).....

Any of y'all that are 10-10 members come run the contest.  I just got my
400 bar, and I think it would be great if I could rack up 100 new ones
during the contest and get my 500 bar and VP number.  Really!

Let's show 'em some QRP skill, eh?

Duane
WB9omc

From [e-mail]  Mon Jan 31 12:47:01 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Mon, 31 Jan 1994 11:49:39 CST
Date: Mon, 31 Jan 1994 11:49:39 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: Help: coil winding
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: JMG
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-Transfer-Encoding: 7BIT

HELP!!!

will Ed, Chuck or one of you other experts please help. I am attempting
to at least get all the parts on the board of the Radio Kits 20m. I have
about everything except components that were not present and 5 coils.

These five coils say at the end of the description things like 2 or 3
turn link. I have never come across this before and can think of many
meaning for this... anyone know exactly what is meant.. asked the local
guy .. said ..depends on the circuit.

Wrote off for the missing parts.. now can't find the MRF475.. anyone
know if I can substitute a SC1969 (higher powered) in that circuit?

Anyone want to finish this and play with it for a couple of months.. I
have developed a real hate relationship with it.. haven't had this
problem with a construction or repair since I had an old VW bus that I
use to fight with all the time.

thanks

72

Jeff, AC4HF

From [e-mail]  Mon Jan 31 15:56:07 1994
Return-Path: <[e-mail]>
Message-Id: <[e-mail]>
Date: Mon, 31 Jan 1994 12:54:27 -0800
To: "William (W.D.) Redfearn" <[e-mail]>
From: [e-mail] (Wayne Burdick)
Subject: Re: re:NorCal 40: The Second Batch
Cc: [e-mail], [e-mail], [e-mail],
        [e-mail], [e-mail]

Dave,

Thanks for the question about our next NorCal club project, the Sierra
multiband CW transceiver.  The Sierra isn't quite ready for primetime (I'm
building the prototype this week and have my fingers crossed), but here's a
bit to chew on:

        - 150KHz coverage of 80/40/30/20/17/15 meters using plug-in modules
        - Similar to NorCal 40 design but with much better receiver
performance, including plenty of speaker drive and IF amp w/good AGC range;
receive-mode current drain around 30mA
        - size of main unit is 6.2W x 5.2D x 2.6H (roughly), with one main
PCB (5.8W x 5D) with all controls and connectors mounted to it, and little
wiring to do, like the NorCal 40
        - band modules are 4W x 1H and include 4 double-tuned circuits and
1 crystal (hope you don't mind toroids: there are eight (8) .375" OD
toroids on each band module!)
        - Tx power out around 2.5W (nominal), a bit more on low bands and a
bit less on high bands, and adjustable
        - quick-release latches on either side of the cabinet to get to the
inside of the box for changing band modules
        - plenty of room inside the box for storage of band modules
(velcro?), adding keyer, batteries, or antenna tuner, etc.
        - plenty of unused front panel space to add a meter, keyer speed
control, etc.
        - estimated club kit prices: Sierra with one band module, $150;
additional band modules around $20-30 each

NOTE:  Kits will be sold to NorCal members only--this is a non-profit, club
project.  Joining is $5 and can be concurrent with kit purchase, plus you
get a great hand-crafted quarterly newsletter from Doug Hendricks.

If you're intereseted, write to get on the Sierra mailing list:

        Jim Cates
        3241 Eastwood Rd.
        Sacramento, CA  95821

That's it for now; if the prototype works right away I'll be so happy that
I'll probably post some *really* long-winded thing to the Internet next
week   (-:

73,
Wayne



From [e-mail]  Mon Jan 31 15:59:24 1994
Return-Path: <[e-mail]>
    id AA16649; Mon, 31 Jan 1994 12:58:03 -0800
Date: Mon, 31 Jan 1994 12:58:03 -0800
Message-Id: <[e-mail]>
From: [e-mail]
To: "[e-mail]"@EAGLE.DECNET.LOCKHEED.COM
Subject: SUBSCRIBE

de N2ALE/6

From [e-mail]  Mon Jan 31 16:26:33 1994
Return-Path: <ccm![e-mail]>
    (Smail3.1.28.1 #2) id m0pR68Z-000MNbC; Mon, 31 Jan 94 13:26 PST
    (Smail3.1.28.1 #1) id m0pR6BK-00000bC; Mon, 31 Jan 94 13:29 PST
Date: Mon, 31 Jan 94 13:29:17 PST
From: Mark E Gustoff <[e-mail]>
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Zack Lau Triband QRP Transceiver


Text item: Text_1

Have built the 3 band VXO controlled QRP transceiver of Zack
Lau's in the red QRP Handbook (by ARRL) or the Aug 89 QST (my
guess at the date).

Everything on receive side is working fine. The TX oscillator
is working fine, but final RF amplification is no good. Have
checked the toroidal transforms in this area three times
(rewound both of them once already).

I'm starting to suspect an error in the schematic or on
RadioKit's parts layout diagram. If there are any builders
of this rig that could help, please e-mail me your
comments/suggestions.

Tnx de WO7T/QRP

===================================================================
[e-mail]
===================================================================

From [e-mail]  Mon Jan 31 20:51:46 1994
Return-Path: <[e-mail]>
Message-Id: <[e-mail]>
From: [e-mail]
Date: Mon, 31 Jan 94 20:43 EST
Original-From: mvubr!mvjf (James M Fitton [phone])
To: [e-mail]
Cc: mvgsd![e-mail] (Arthur E Haley), [e-mail],
        [e-mail], [e-mail], [e-mail],
        [e-mail], [e-mail],
        [e-mail], [e-mail], [e-mail],
        mvubr![e-mail] (James M Fitton), [e-mail],
        [e-mail], [e-mail], [e-mail],
        mvgpk![e-mail] (Michael E Dawson), [e-mail],
        [e-mail], [e-mail], [e-mail],
        mvgpk![e-mail] (William K Mcnally), [e-mail]
Subject: Forum FIY




   Mr. Ron Moorefield, W8ILC,
       Dayton Forum Manager

   Thank you for inviting us to speak again on QRP at Hamvention 1994.
   Based on the response from last year's forum it was decided
   to follow through and expand upon a theme introduced last year.

   Please confirm the following arrangements for our Forum.

   FORUM:  "QRP - Those New Clubs"
   Date :  5/1/94  -  Sunday
   Time :  0930-1100
   Room :  3

   Speakers and Titles:
   --------------------
   Jim Fitton, W1FMR "Coordinating"
   Chuck Adams, K5FO "Technical Interest"
   Doug Hendricks, KI6DS "Newsletters are Necessary"

   This year's forum focuses on 3 key ingredients that could
   help to start a successful QRP club in your own area.
   "The Excitement is Building" as Chuck, Doug, and Jim show
   how they tap into the information superhighway for ideas,
   creativity, and technology and generate excitement in their
   own QRP clubs.

   I hope this meets with your approval.
   Please let me know if there are any questions.

   W1FMR represents QRP-NE, The New England QRP Club.
   K5FO represents NT-QRP, The North Texas QRP Club.
   KI6DS represents NorCal-QRP, The Northern California QRP Club.

   73,   Jim Fitton, W1FMR


From [e-mail]  Mon Jan 31 22:08:40 1994
Return-Path: <[e-mail]>
Message-Id: <[e-mail]>
Date: Mon, 31 Jan 94 22:08:38 EST
From: Mark Shelhamer <[e-mail]>
To: [e-mail]
Subject: [QRP] Which books do you recommend?


I'd like to branch out a bit and start building from scratch rather than kits.
First, I'm going to augment my library, and I'm looking at some of the
ARRL books. Does anyone have any opinions on these:
QRP Notebook
Design Notebook
QRP Classics
Solid State Design

73,
Mark WA3YNO


From [e-mail]  Tue Feb  1 00:45:14 1994
Return-Path: <[e-mail]>
    id AA02942; Mon, 31 Jan 94 19:45:08 HST
    id AA06692; Mon, 31 Jan 94 19:45:07 HST
Date: Mon, 31 Jan 94 19:45:07 HST
From: Jeff Herman <[e-mail]>
To: Mark Shelhamer <[e-mail]>
Cc: [e-mail]
Subject: Re: [QRP] Which books do you recommend?
In-Reply-To: Your message of Mon, 31 Jan 94 22:08:38 EST
Message-Id: <[e-mail]>

Mark - don't forget to get a copy of ``The History of QRP'' EXCELLENT
READING! I believe the author's name is Weiss. I found a copy of it in
our public library - couldn't stop reading it. I think the publisher
is ``Milliwatt Books'' - they're the only one's who sell it, I believe.



Jeffrey NH6IL  [e-mail]

Vietnamese Proverb: If you study you will become what you wish
                    If you do not study you will never become anything.

From [e-mail]  Tue Feb  1 01:09:01 1994
Return-Path: <[e-mail]>
    id AA06679; Mon, 31 Jan 94 20:08:51 HST
    id AA07529; Mon, 31 Jan 94 20:08:51 HST
Date: Mon, 31 Jan 94 20:08:51 HST
From: Jeff Herman <[e-mail]>
To: [e-mail]
Subject: Books
Message-Id: <[e-mail]>

Gang,
  Here's the complete info on how to get a copy of this wonderful book,
HISTORY OF QRP IN THE U.S.:

A. Weiss W0RSP
Milliwatt Books
833 Duke St. #83
Vermillion, South Dakota 57069

$12 - it'll come first class mail.

Do I recall that the ARRL also sells this?



Jeffrey NH6IL  [e-mail]

Vietnamese Proverb: If you study you will become what you wish
                    If you do not study you will never become anything.

From [e-mail]  Tue Feb  1 01:22:05 1994
Return-Path: <[e-mail]>
  (5.65c/IDA-1.4.4); Mon, 31 Jan 1994 21:54:41 -0800
    id m0pR6Ha-000040C; Mon, 31 Jan 94 21:35 GMT
Message-Id: <[e-mail]>
From: [e-mail]
Subject: Re: Help: coil winding
To: [e-mail] (JEFF M. GOLD)
Date: Mon, 31 Jan 1994 21:35:46 +0000 (GMT)
Cc: [e-mail]
In-Reply-To: <[e-mail]> from "JEFF M. GOLD" at Jan 31, 94 11:49:39 am
X-Mailer: ELM [version 2.4 PL21]
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Content-Length: 2248

Jeff, AC4HF writes:
>
> HELP!!!
>
> will Ed, Chuck or one of you other experts please help. I am attempting
> to at least get all the parts on the board of the Radio Kits 20m. I have
> about everything except components that were not present and 5 coils.
>
> These five coils say at the end of the description things like 2 or 3
> turn link.

**** That's a separate little winding, two or three turns around the
toroid, that is used to transfer power in and out of it without loading
down the Q of the tuned circuit.  As a rule, a link is wound around the
``cold'' end of the tuned circuit ( ground or power );  this minimizes
capacitive coupling.

   It can be interesting and instructive to  take a signal generator
and a scope, and use them to play with a parallel tuned circuit.  You
put the tuned circuit across the output of the generator, and measure
the voltage across it with the scope.  Sweep the generator... Hmm, not
too selective... Now wind a link around the toroid, and connect the
signal generator to the link.  Sweep again... Wow!!  Look at that peak!

   You can get a good peak even without the link by putting a big
resistor in series with the output of the generator.  Say, 100K.  That
effectively removes the generator's low output impedance from across the
tuned circuit, letting it approach its unloaded Q.  You could also think
of the series resistor as giving the tuned circuit something to work
against when it tries to short out the output.

  The disadvantage of the big resistor is that you're not transferring
much power through the tuned circuit.  That's where links come in.  They
let you freely choose what the load on the tuned circuit is, therefore
what its loaded Q is, therefore what its bandwidth is.

  You can get pretty much the same effect as a link by just tapping down
on the main coil.  But when you use toroids, links are easier. They
also give you the added benefit of DC isolation.

                                           - Jerry
--
***************************************************************
* Jerry Kaidor       [e-mail], [e-mail]     *
*                    KF6VB                                    *
***************************************************************

From [e-mail]  Tue Feb  1 09:06:46 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Tue, 1 Feb 1994 08:09:27 CST
Date: Tue, 01 Feb 1994 08:09:26 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: coil winding
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: JMG
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-Transfer-Encoding: 7BIT

All,

I checked the instruction sheet on the Radio Kits 20m.. here is what it
says and I will tell you why I am somewhat confused:

L1-20T #28 on T30-2, tap at 7 t from ground,-2t link at fround end

*note doesn't say biflar

L3/L4-12t biflar #20 on  t30-2-2t link.

Now does that mean on the L3/L4 you wind 12 turns of double wire and
then add another 3rd wired for the 2t link? or is L1 really biflar.

thanks

Jeff, AC4HF

From [e-mail]  Tue Feb  1 10:24:30 1994
Return-Path: <[e-mail]>
    id AA09605; Tue, 1 Feb 94 07:24:27 -0800
Message-Id: <[e-mail]>
Date: Tue, 1 Feb 94 07:24:27 PST
From: N1OOQ Tom R. @ MRO1  01-Feb-1994 1011 <[e-mail]>
To: [e-mail]
Apparently-To: [e-mail]
Subject: re: [QRP] Which books do you recommend?

Mark,
I just got Solid State Design and W1FB QRP Notebook for my birthday 8-)...
Of the two, SSD is probably better if you want to design your own circuits.
It goes into pretty good detail on things like xsistor theory, oscillators,
VXOs, VFOs, etc. (yup, I haven't gotten to the RX part yet). QRP Notebook is
better if you want a good selection of designed and tested HF QRP circuits
to choose from. SSD also covers up into VHF/UHF. Both excellent books, and
pretty well up to date... most of the parts in the designs are readily
available from the major distributors, with some specialized stuff that you
have to go to Amidon, RF Parts, etc. for. Flea market season starts up again
very soon here in the Northeast, so I'm looking forward picking up some needed
parts. Anyone wanna see my QRP Notebook shopping list?
-Tom R.   N1OOQ   [e-mail]

From [e-mail]  Tue Feb  1 11:52:18 1994
Return-Path: <[e-mail]>
    id AA29986; Tue, 1 Feb 94 08:53:02 -0800
Message-Id: <9402011650.AA10330@itgmsm>
From: [e-mail]
To: [e-mail], [e-mail]
Subject: RE: [QRP] Which books do you recommend?
Date: Tue, 01 Feb 94 08:50:00 PST
X-Mailer: Microsoft Mail V3.0


Mark Shelhamer asks for opinions on:

> QRP Notebook
> Design Notebook
> QRP Classics
> Solid State Design

They're all good. Buy them all.

If I was to do it again I'd buy W1FB's books first, then _QRP Classics_,
then _Solid State Design_ - going from the least nerdy to the most nerdy,
more-or-less.

After that I'd start looking for goodies like those cool Motorola RF devices
books, and some good books on RF transistor design and the like. One of my
standard recommendations is the RSGB's _Radio Communication Handbook_, which
covers much of the same ground as the ARRL Handbook, but from a very
different approach. Yes, it is a little dated by now and some of the British
parts can be hard to find in North America, but it's still a good buy, IMHO.

One book I'd like to see might be entitled _The ham radio Compendium_. That
was one way cool magazine and people who have old issues are rarely
interested in parting with them...

73 from Burnaby,
laura VE7LDH

From [e-mail]  Tue Feb  1 14:47:44 1994
Return-Path: <auratek!auratek.com![e-mail]>
    (5.61/UUNET-internet-primary) id AAwbkh23382; Tue, 1 Feb 94 14:47:33 -0500
    (queueing-rmail) id 144641.25156; Tue, 1 Feb 1994 14:46:41 EST
    id AA24705; Tue, 1 Feb 94 11:56:05 EST
Date: Tue, 1 Feb 94 11:56:05 EST
From: [e-mail] (Edward Pacyna)
Message-Id: <[e-mail]>
To: [e-mail], uunet!tntech.edu![e-mail]
Subject: Re:  coil winding

>
>All,
>
>I checked the instruction sheet on the Radio Kits 20m.. here is what it
>says and I will tell you why I am somewhat confused:
>
>L1-20T #28 on T30-2, tap at 7 t from ground,-2t link at fround end
>
>*note doesn't say biflar

L1 forms the tuned circuit between the antenna and RX mixer. This is to
provide some selectivity in front of the mixer (eliminate out of band
signals that can produce IMD and the mixer image response from being
heard while you tune the frequencies of interest), and provide maximum
power transfer by matching the antenna to the mixer. Maximum power is
transferred when the source Z is equal to the load Z.

The 2 turn secondary link steps up both the low antenna Z and voltage
through transformer action. The basic formulas are in every basic book
on electronics. In your case the 50 ohm antenna is stepped up to 9,800
ohms across the primary ( (28/2)^2 X 50 ) and the voltage is increased
to 14 times the antenna voltage at 50 ohms. The 7 turn tap also provides
a transformer between primary of L1 and the mixer. The Z transformation
is (28/7)^2 or 16:1. Since the single ended NE602 mixer input is 1500
ohms, it will now appear across L1 as 24,000 ohms (1500 X 16). Note that
the antenna is NOT matched to the load and you will have some uneccessary
losses. You can change the # of turns in either the link or tap point to
correct this (e.g. you want both of the transformed Z's to be equal for
minimum loss).

There is also another consideration, the selectivity. The Q of this circuit
is basically (w L) / R. Where w = 2 pie f and R is the total loading on the
parallel tuned circuit. There are actually 3 R's involved. In addition to
the two mentioned above, the components themselves have loss (mainly the
inductor and the loss is express as an resistance where R = Qu w L, Qu is
the unloaded Q of the inductor. A typical value for the toroid above at
14Mhz would be 150. So the tuned circuit sees; R antenna of 9,800 ohms,
R mixer of 24,000 ohms and R component of about 32,000 ohms. The 3 in
parallel combine to 2,860 ohms. The tuned circuit Q is about 13 which is
a 3dB bandwith of a little over 1Mhz ( BW = F / Q). Given that this is
a single tuned circuit (not to much attenuation in stop band), the image
may be heard. The QRP20 (with a 4MHz VFO and 10Mhz IF) will probably hear
6Mhz images at night.

So adjust either the link or tap point and build the circuit. The only
tickey point is to wind the primary and secondary windings in the same
sense (that means same direction and cold and hot ends start and stop
at the same end). Also, links are usually wound over the cold end (e.g.
ground end) in narrow band tuned circuits and over the center in wide
band or center tapped circuits.



>L3/L4-12t biflar #20 on  t30-2-2t link.
>
>Now does that mean on the L3/L4 you wind 12 turns of double wire and
>then add another 3rd wired for the 2t link? or is L1 really biflar.
>

Very similar to above discussion. I recall that this circuit is used
between the mixer output and crystal filter. The curve here is that
they are using a bifilar winding connected together to make a single
primary winding with center tap. The tricky part here is to connect the
bifilar winding correctly. Think of it this way. Use two equal lengths
wires (one red and one green) and twist them together in a hand drill.
Wind the combined wires the correct # of turns (remember every time you
pass through the inside of the toroid it is 1 turn). Connect the red wire
from one end to the green wire at the other end to make the center tap.
The link should be added as above. Since the center tap is formed via
a bifilar winding you just wind the link over the primary.


73

Ed W1AAZ


From [e-mail]  Tue Feb  1 15:32:42 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Tue, 1 Feb 1994 14:34:30 CST
Date: Tue, 01 Feb 1994 14:34:30 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: Argosy
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: JMG
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-Transfer-Encoding: 7BIT

Well thanks to Kevin Anderson and a number of people on this
list I do believe I have finally found an Argosy II.

I have been trying to collect some old Ten Tec gear. I have recently got
hold of a Century 21 (just replaced the finals last night... seems to be
working good) and will be receive a Century 22 any day now. I already
have an Argonaut 509 that I use mobile.

I had been checking the Swap and equipment groups religously, but missed
the .misc group lately.. and of course that is where one finally showed
up.. think I got the first call in.. gave full price with a smile..
suppose to be in mint condition.

Sure would like to find some of the really old stuff.. (didn't they have
seperate TX/REC..think I saw some while I was at the factory).

I have a chance to pick up a Scout.. but think I would rather hold off
and check out the QRP Plus

Time to build more desk space.. I leave all my rigs operational.

PS.. if any of you are straight key or paddle collectors (my other vise)
I have a really different single paddle ( I normally use the dual
paddles) really high speed paddle on the way in.. I ordered extra info
sheets incase anyone was interested (Chuck will get one automatically).
Saw it a few times at ham fests.. and tried it out each time. the new
one has a really nice wood finger piece.. so different in design, I
can't explain it.  I can almost be understood with a Vibroplex Bug at
this point.. one of my challenges.

72

Jeff, AC4HF

From [e-mail]  Wed Feb  2 00:33:36 1994
Return-Path: <[e-mail]>
    for [e-mail] id AA25286; Tue, 1 Feb 94 21:33:31 -0800
    for @sgi.sgi.com:[e-mail] id AA11204; Tue, 1 Feb 94 23:33:28 -0600
    for @sgidal.dallas.sgi.com:[e-mail] id AA14670; Tue, 1 Feb 94 23:33:28 -0600
Date: Tue, 1 Feb 94 23:33:28 -0600
From: [e-mail] (Chuck Adams)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Hambrew
Cc: [e-mail]


Gang,

i haven't heard a word, have you?

Hambrew Magazine
P.O. Box 260083
Lakewood, CO 80226-0083
1-800-5-HAM RIG  for Ads and Subscriptions

guess it's time to call and find out what's going on.

i did hear indirectly that George (owner, editor, publisher) wants
yours truly to write an article, but i think i'll pass.

also of remarkable note:  a miracle has happened.  i got the sun
spot data for everymonth since 1749, when they were first taken.
stand by, this data will appear in an article in QQ, next issue.
graphs and all for correlation between QRP activity and the sunspot
activity.


ok, back to work.

dit dit
Chuck Adams  K5FO  CP-60 wpm
[e-mail]




From [e-mail]  Wed Feb  2 01:42:34 1994
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 <[e-mail]>; Wed, 2 Feb 1994 01:40:03 EST
Date: Wed, 02 Feb 1994 00:44:23 -0500 (EST)
From: [e-mail] (Edwin E. Albert)
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Subscribe Edwin E. Albert KF8EE

From [e-mail]  Wed Feb  2 08:53:25 1994
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        id AA26347 for ; Wed, 2 Feb 94 08:43:38 -0500
    id AA01683; Wed, 2 Feb 94 08:33:21 EST
    id AA26672; Wed, 2 Feb 94 08:33:20 EST
Date: Wed, 2 Feb 94 08:33:20 EST
From: [e-mail] (James D. Cronin)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Hambrew magazine


According to George, the Post Office is to blame.  He sends
copies of the magazine out.  They never arrive.

73...Jim
N2VNO


From [e-mail]  Wed Feb  2 09:41:04 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Wed, 2 Feb 1994 08:43:27 CST
Date: Wed, 02 Feb 1994 08:43:27 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: New Toy
To: [e-mail]
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All,

got in a new toy last night. It is a very unusual single paddle key that
I saw at a few ham fests, played with and liked.

It is called the VSL X3. is has solid gold contacts frabricated form W.
E. Alloy #1, 69% gold, 25% silver, 6% platinum.

the contact base is 1/2" thick, clear Lexan. The spacing assembly is
very precise form 1/2 oz go 2.5 oz

2.2 lb of steel weights directly over key feet for stability.

or 3 X 3.5" horizontal

solid brass posts, contact screws and lever bar (except for "feel
adjustment which I think are nylon)

capable of speeds over 50 wpm (so claimed.. think Chuck will have to
test that concept out)

Hardwood finger piece of polished Cocobolo (really nice and feels great)

phono jack output for easy changing of keying polarity

Optional clear dust cover (waste of money.. not real pleased with this
miniature piece of nothing.. only usable if you use key in horizontal
position)

1-800-726-8936

I have nothing to do with this company (as usual) except for a recent
contribution of funds that was applied toward the key I received
================================================================


OK, now my comments.. I collect and love keys and paddles.. only special
ones.. sold my Benchers right off when I saw better paddles..I usually
use dual iambic paddles (love my Kents). So with this in mind.. had to
be pretty different and good for me to spend the bucks. The key can be
used in one of two vertical positions.. the difference being the "feel"
of the key. It can also be used in the vertical position for what he
says is a "bug" like feel. I have played with both vertical positions
and preferred the one it was designed to do.. but if time permitts
tonite I am going to try the horizontal position (with the key that is).

I prefer a very sensitive touch with straight keys and paddles. I found
that you can really get a great feel setting with this key. I found it
very easy to send properly using this single paddle key and could send
just as fast without using the keyer's Iambic feature.

He will send you a nice brochure if you call.

72

Jeff, AC4HF

*go ahead Doug .. its all yours

From [e-mail]  Wed Feb  2 10:30:52 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Wed, 2 Feb 1994 09:33:25 CST
Date: Wed, 02 Feb 1994 09:33:25 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: Centruy 21..transistors
To: [e-mail]
Message-Id: <[e-mail]>
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Hi,

Recently purchased a Century 21 off the net for my future Ten Tec
collection.

* anyone know anything about "power mites"?

I had to replace one of the finals.. RF parts had the MRF475 for 9.95. I
cross referenced it to a 2SC1969..same as used in the Gary Breeds. The
2sc1969s were $2.65.. so bought 5 or them.. figured could always use
them if I blew one in my GB. Well I had heard that the 21s put out 50
watts. I am looking at the spec.. says.."Final RF pwr Output.. 13W"

They were cheap enought so i replaced both.. figured more likely to be
closer matched. (matched sets of MRF475s were like $25.

I really liked the module design of the Century 21.. while I was in the
radio.. replaced some wires that didn't look great.... it was fun.
Wasn't real hard to replace the transistors. I think that someone hadn't
set the current limiter correctly and that is why the transistor blew.
Haven't really looked at it.. but the manual says the finals are suppose
to be protected.

The manual also said 25-30 watts. Well couldn't find anything in the
book to help me set the two thumb wheel Pots? one I know sets the meter
adjust ... the other..current limiter? Played around with them till it
seemed about right.. (not really good way.. but works sometimes).
Adjusted the power input by checking my Watt meter and noticing at which
point the radio was near full power.. coincided with about the right
power input level.. so left it alone. The rig seems to loaf at 35-40
watts on 20 meters.

I got on 80 meters and tuned my 10-12-15-17-20 meter quad for 80
meters.. pointed north (the rotor is frozen with our very cold wx) and
of course heard a station calling CQ from Guatemala. Now I lost a few
other people calling CQ.. not use to the DC receiver.. think they are
calling at one freq., I am answering at another.. played with my 850S
and adjusted the RIT on the 21 till I seemed to figure out where I
needed to be. Answered the CQ and the guy came right back to me... got a
good report also. The wattmeter was peaking at about 50 watts and
running average over 40.

Those $2.65 2SC1969s seem to be enjoying themselves and I didn't have
the power input up to the suggested level.. going to start going down to
QRP now that I know the rig works.

72

Jeff, AC4HF

From [e-mail]  Wed Feb  2 12:06:06 1994
Return-Path: <ccm![e-mail]>
    (Smail3.1.28.1 #2) id m0pRl1R-000MOqC; Wed, 2 Feb 94 09:05 PST
    (Smail3.1.28.1 #1) id m0pRl3p-0001M8C; Wed, 2 Feb 94 09:08 PST
Date: Wed, 2 Feb 94 09:08:17 PST
From: Mark E Gustoff <[e-mail]>
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Re: Centruy 21..transistors

Jeff:

 My Century 21 has 75W input, and it is good for between 25-35W
 out on most bands. I could do a band by band check tonight, and
 give you more accurate power out measurements.

72

[e-mail]



Hi,

Recently purchased a Century 21 off the net for my future Ten Tec
collection.

* anyone know anything about "power mites"?

I had to replace one of the finals.. RF parts had the MRF475 for 9.95. I
cross referenced it to a 2SC1969..same as used in the Gary Breeds. The
2sc1969s were $2.65.. so bought 5 or them.. figured could always use
them if I blew one in my GB. Well I had heard that the 21s put out 50
watts. I am looking at the spec.. says.."Final RF pwr Output.. 13W"

They were cheap enought so i replaced both.. figured more likely to be
closer matched. (matched sets of MRF475s were like $25.

I really liked the module design of the Century 21.. while I was in the
radio.. replaced some wires that didn't look great.... it was fun.
Wasn't real hard to replace the transistors. I think that someone hadn't
set the current limiter correctly and that is why the transistor blew.
Haven't really looked at it.. but the manual says the finals are suppose
to be protected.

The manual also said 25-30 watts. Well couldn't find anything in the
book to help me set the two thumb wheel Pots? one I know sets the meter
adjust ... the other..current limiter? Played around with them till it
seemed about right.. (not really good way.. but works sometimes).
Adjusted the power input by checking my Watt meter and noticing at which
point the radio was near full power.. coincided with about the right
power input level.. so left it alone. The rig seems to loaf at 35-40
watts on 20 meters.

I got on 80 meters and tuned my 10-12-15-17-20 meter quad for 80
meters.. pointed north (the rotor is frozen with our very cold wx) and
of course heard a station calling CQ from Guatemala. Now I lost a few
other people calling CQ.. not use to the DC receiver.. think they are
calling at one freq., I am answering at another.. played with my 850S
and adjusted the RIT on the 21 till I seemed to figure out where I
needed to be. Answered the CQ and the guy came right back to me... got a
good report also. The wattmeter was peaking at about 50 watts and
running average over 40.

Those $2.65 2SC1969s seem to be enjoying themselves and I didn't have
the power input up to the suggested level.. going to start going down to
QRP now that I know the rig works.

72

Jeff, AC4HF

From [e-mail]  Wed Feb  2 12:55:45 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Wed, 2 Feb 1994 11:58:10 CST
Date: Wed, 02 Feb 1994 11:58:10 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: Power Mites
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: JMG
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All,

My next quest is to find a Ten Tec Power Mite. I was told there was a
SB3? 20/40.. I want one. Anyone know anyone who knows anyone who might
know of someone he might sell one?

72

Jeff, AC4HF

From [e-mail]  Wed Feb  2 12:57:29 1994
Return-Path: <[e-mail]>
    id AA02631; Wed, 2 Feb 1994 09:47:12 -0800
Date: Wed, 2 Feb 1994 09:47:11 -0800
Message-Id: <[e-mail]>
From: [e-mail]
To: "[e-mail]"@EAGLE.DECNET.LOCKHEED.COM
Subject: QRP rig

I'm just getting into QRP and sent off for membership in QPR ARCI.
I have a TS-830S but have a Yaesu Ft-7 lined up just for QPR, my interest
is contesting so lack of 30m is not an issue (today).

Any thoughts about this rig?  Have I "scored big" or "messed up"?
PSE reply direct especially for the latter.

73, alan N2ALE/6
[e-mail]

From [e-mail]  Wed Feb  2 14:49:36 1994
Return-Path: <[e-mail]>
    id AA23709; Wed, 2 Feb 94 09:49:27 HST
    id AA22505; Wed, 2 Feb 94 09:48:05 HST
Date: Wed, 2 Feb 94 9:48:04 HST
From: Jeff Herman <[e-mail]>
To: [e-mail]
Subject: qrp talk on r.r.a.misc
Message-Id: <[e-mail]>

Gang,
   There's a QRP thread that has started on rec.radio.amateur.misc -
finally saw someone from here (Chuck!) contribute to it. This is a good
chance to tell the world about our first love (r.r.a.misc has an estimated
readership of 50,000). Let's get some more of you in this thread!


Jeffrey NH6IL  [e-mail]

Vietnamese Proverb: If you study you will become what you wish
                    If you do not study you will never become anything.

From [e-mail]  Wed Feb  2 16:32:48 1994
Return-Path: <[e-mail]>
    id AA16930; Wed, 2 Feb 94 14:32:40 MST
Date: Wed, 2 Feb 94 14:32:40 MST
From: [e-mail] (Steve Kubisch)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: wire antennas for qrp


Hi,
   I'm new to internet and new to this group.  Have enjoyed reading
the mail from here and have picked up some new ideas.  I have a
Tejas Backpacker II on 30 meters and am expecting a Norcal40 from
the new batch of 100.  I would like some of your opinions on gud
wire antennas for my qrp rigs both perminent and portable as I
take the little pups backpacking and camping here in Utah....
sooo... what are you guys using???

Thanks,

Steve Kubisch WW7Y   [e-mail]

From [e-mail]  Wed Feb  2 18:10:52 1994
Return-Path: <[e-mail]>
          2 Feb 94 15:10 PST
To: "JEFF M. GOLD" <[e-mail]>
Cc: [e-mail]
Subject: Re: Power Mites
In-Reply-To: Your message of "Wed, 02 Feb 1994 11:58:10 CST."
             <[e-mail]>
Date: Wed, 02 Feb 1994 15:10:40 -0800
From: Clark Savage Turner WA3JPG <[e-mail]>
Message-Id:  <[e-mail]>

Hi Jeff:

I had my first Ten Tec rig in about 1970 or so, it was the Ten Tec
Power Mite PM3A.  It was a 40 and 20 meter CW rig, DC receiver
with small tuning meter, several tune up controls, very little
audio (headphones only) with exposed needle for analog tuning
purposes.  Ran some 4 watts out or so from a 12 volt lantern
battery.  Not selective, but plenty sensitive.  I liked it so much
I saved up for an Argonaut 505 in 1972.

They are boxes about the size of your 509, but are white.  I knew of
the PM 1, the PM 2, and the PM 3.

I'll keep my eye open for you.  Good luck.

72

Clark
WA3JPG

From [e-mail]  Wed Feb  2 18:26:26 1994
Return-Path: <[e-mail]>
          2 Feb 94 15:26 PST
To: Steve Kubisch <[e-mail]>
Cc: [e-mail]
Subject: Re: wire antennas for qrp
In-Reply-To: Your message of "Wed, 02 Feb 1994 14:32:40 MST."
             <[e-mail]>
Date: Wed, 02 Feb 1994 15:26:19 -0800
From: Clark Savage Turner WA3JPG <[e-mail]>
Message-Id:  <[e-mail]>

Hello Steve:

A very open ended question, and I believe the short answer is that
just about anything full length and at reasonable height will work
fine.  I have always used a 100 foot dipole as a standard first
antenna at a new QTH.  I feed it with 300 ohm TV twin lead to a tuner,
and it is usually about 30 feet up.  I run 5 watts and under and
work plenty of DX, mostly on 40.  I have also put up an extended
double zepp for 40 meters, about 150 foot dipole, also fed with
300 ohm twin lead, and it gives me a better signal broadside to
the wire by a few db, noticeable on my receiver when I switch
antennas (I have them oriented the opposite way).

SO, heck, I have always had lots of success with a 50 foot wire
thrown up into a tree fed at the end to a tuner for 40-10, and
it will work up on 75, though not so well.  I have end fed
horizontal wires just fine also.  You need only have lots of wire,
a decent antenna tuner, some supports and lots of imagination.
Hey, try a loop if you have the space.  Just put out as much
wire as you can, as high as you can, and get on the air.

72

Clark
WA3JPG

From [e-mail]  Wed Feb  2 22:45:31 1994
Return-Path: <[e-mail]>
Message-Id: <[e-mail]>
From: [e-mail]
Date: Wed, 2 Feb 94 22:36 EST
Original-From: mvubr!mvjf (James M Fitton [phone])
To: [e-mail]
Subject: ARCI QQ


The ARCI QRP Quarterly (QQ) should be in the mail by Friday....
There is a hole on one page where the printer lost a photo....
For the sake of expediency, since the editor is in IL and
printer in TX,  it was decided  not to hold the presses
but to run without it......

72/73.... W1FMR

From [e-mail]  Thu Feb  3 00:57:45 1994
Return-Path: <[e-mail]>
    id VAA24965; Wed, 2 Feb 1994 21:56:48 -0800
From: [e-mail] (Mont Pierce)
Message-Id: <[e-mail]>
Subject: Re: Articles in QST
To: [e-mail] (Bob Citkowski)
Date: Wed, 2 Feb 1994 21:56:45 -0800 (PST)
Cc: [e-mail], [e-mail]
In-Reply-To: <[e-mail]> from "Bob Citkowski" at Jan 19, 94 09:18:30 am
X-Mailer: ELM [version 2.4 PL23]
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>
> hi,
> continuing on this drawn out thread..... the february 73 magazine has an "article", not
> a review of a kit, on an ascii to cw project.  provides the schematic, parts list,
> long article on what's going on, but, no listing of the code for the eprom program that
> the micro uses.  in the parts list the "kit" provider for $27 will sell you the micro
> and eeprom with the required code burned along with the source code and software tools
> to program/modify the code yourself, of course one needs to have a eprom eraser/programmer
> available to do this.  this seems to be a recurring "problem"(?) with the projects that
> are being published according to the thread on this list.  but, from the average ham i
>.....

Well, actually this ham has provided all parts needed for any builder at
whatever level.  You can get the burned prom, along with the source.  Or,
you can login to the bbs and download the source for FREE if you already
have the means to make your own proms.

I think this project is being offered in the manner that most of us would
like to see.  The complaints have been about some who force you to buy their
preprogrammed proms, etc. and won't let you have the source code.  You have
no option to personalize how it works, you have to take what they give you
or do without, unless you can create your own from scratch.

The real problem is that there is a conflict of interests in the minds of
some project designers.  We, the general ham public, have gotten used to
the idea of receiving electronic circuit designs for free.  Professional
programmers on the otherhand are used to getting a price for their software
creativity, they do it for a living.  Even an average computer user cannot
comprehend how much effort and time goes into software development.  Software
that is mass produced can be sold for <$100 and still make a good profit,
because they can sell hundreds of thousands of copies.  If they could only
sell a few hundred copies, they would have to charge thousands of dollars
to pay for the software development expenses.

On the otherhand, as I actually have a foot in both doors, the ham world
and the professional software programming world, I can understand the
hesitation of those project designers who do not reveal their source codes.
For now, I think we have to be patient and not worry too much this issue.
As most of you net users are aware, there is more and more software becoming
available for free on the net.  I think this trend will also occur in ham
projects requiring software.  One thing we could encourage is starting a
group of programmers on the net to work together on a programming project.

Just another ham's 2 cents worth...

73,
--
Mont Pierce

+-------------------------------------------------------------------------+
| Ham Call: KM6WT             Internet:  [e-mail]                  |
|    bands: 80/40/20/15/10/2  IBM vnet:  [e-mail]                 |
|    modes: cw,ssb,fm                                                     |
+-------------------------------------------------------------------------+

From [e-mail]  Thu Feb  3 11:54:11 1994
Return-Path: <[e-mail]>
From: [e-mail]
          via Charon-4.0-VROOM with IPX id 100.940203083023.5568;
          03 Feb 94 09:06:22 +600
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To: [e-mail]
>From: TAEX003N!GTAYLOR
Date:     3 Feb 94 08:30:14 CDT
Subject:  Re: wire antennas for qrp
Reply-To: [e-mail]
X-Mailer: Pegasus Mail v2.1c R5.
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> horizontal wires just fine also.  You need only have lots of wire,
> a decent antenna tuner, some supports and lots of imagination.
> Hey, try a loop if you have the space.  Just put out as much
> wire as you can, as high as you can, and get on the air.
>
Thats been my experience, using about 100 ft of wire center fed with 450
ohm at 25 feet I've got almost 200 countries mixed 5w or less. Have tried
various other types - used a wire ground plane on 10 when it was hot,
center, side and corner fed loops, etc. Never found a single element
antenna at the height I can reach that was sufficiently better than the
(G5RV to use one word) to make it permanent. About the only part of the
world I have a real problem getting into with these antennas is over the
pole into the Indian ocean area...VU, 4S7 etc. Could get into central asia
(old(?) UL, UM) but just seems like the signal has a real problem making
that one additional hop. Guess it would be take that 1 in 100 propagation
opening that I'm never there for.

72, Greg





******************************************************************************
Dr. Gregory S. Taylor               !MAIL:  110 Dairy Science Building
Extension Program Leader for        !       College Station, TX 77843-2124
  Community Development             !VOICE: 409-845-4445
Texas Agricultural Extension Service!FAX:   [phone]
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******************************************************************************

From [e-mail]  Thu Feb  3 20:12:11 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Thu, 3 Feb 1994 14:23:46 EST
Date: 03 Feb 1994 14:23:46 -0500 (EST)
From: "D A Coleman (ext. 2850)" <[e-mail]>
Subject: Re: wire antennas for qrp
To: [e-mail]
Cc: [e-mail]
Message-Id: <[e-mail]>
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X-Vms-Cc: IN%"[e-mail]"
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I'd just like to add that, if you are choosing between the greatest
possible length and the greatest height, sacrificing some length, always
go for the height--within reason, of course.

72

Don Coleman, W1VOQ

From [e-mail]  Thu Feb  3 22:42:23 1994
Return-Path: <[e-mail]>
    id AA27995; Thu, 3 Feb 94 22:42:15 EST
Date: Thu, 3 Feb 1994 22:42:12 -0500 (EST)
From: "Andrew M. Cohn" <[e-mail]>
Subject: Hotel room QRP operation/antenna
To: [e-mail]
Message-Id: <Pine.3.89.9402032227.A27687-0100000@explorer>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Content-Length: 406

Being in the process of assembling a 5 watt, 40 meter QRP briefcase station,
and, after reading some of the mail about qrp antennas, I am concerned
about my proposed operation from hotel rooms during my travels. At best,
I will have a window that can open. But more typically, my antenna will
be confined to the single room. Wonder if anyone sees a glimmer of hope
here....

73, andy/k4adl
[e-mail]


From [e-mail]  Thu Feb  3 23:20:44 1994
Return-Path: <[e-mail]>
    id m0pSI0j-0001t4C; Thu, 3 Feb 94 23:19 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: Bogus call!
To: [e-mail] (Boatanchors Real radios)
Date: Thu, 3 Feb 1994 23:19:17 -0500 (EST)
Cc: [e-mail] (qrp @think.com), [e-mail] (Pete at Myth),
        [e-mail],
        [e-mail] (michael nagorski),
        [e-mail] (Jeff in Hawaii),
        [e-mail] (scott dorsey)
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Content-Length: 886

Excuse my off-topic and crawling in anyones mailbox....

We have, on 80mtrs, a bogus call:  W3PXM...who is actually a silent key

This was bumped into in the course of a qso, and some quite deliberate
qrm was done...using that call.

As we, in this area ( Connecticut, south central) have a 'known' trouble
maker who has used others call often and pulled such stunts...it could
quite likly be him.

Stalking laws now prevent anyone from verifying if or not it is him/his house
so.....

But, at any rate, wanted to warn everyone about that call...it ain't 'PXM

ak!  I can hear him right now! using my call!
dirt-bag!

--
Randy KA1UNW              If you get a shock while
                         servicing  your  equipment,         "Works for me!"
randy@192.153.4.200             DON'T  JUMP!                     -Pete Keyes
                     You might break an expensive tube!

From [e-mail]  Fri Feb  4 00:19:58 1994
Return-Path: <[e-mail]>
    for [e-mail] id AA26849; Thu, 3 Feb 94 21:19:51 -0800
    for @sgi.sgi.com:[e-mail] id AA24896; Thu, 3 Feb 94 23:19:38 -0600
    for @sgidal.dallas.sgi.com:[e-mail] id AA02975; Thu, 3 Feb 94 23:19:34 -0600
Date: Thu, 3 Feb 94 23:19:34 -0600
From: [e-mail] (Chuck Adams)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Hambrew Winter 1994 Issue


Gang,

The first issue for 1994 of Hambrew arrived last night.  This
is the first chance I've had today to sit down and get to type
a review, so this is fast and dirty.

48 pages including front and back cover.

Table of Contents:

Letters...........................................4
Kit Review: The MXM SupeRX/TXTX...................7
Soldering and Parts Identification................9
A Trio of T/R Switches...........................13
New Products.....................................16
A 2 Meter 5 Element Quad.........................19
The 40 Meter Pipsqueak...........................21
Neophyte Roundup, Part One.......................23
The Right Stuff..................................26
8 Minute ID Timer................................27
20/20 Hindsight..................................29
The Di-Conical Monopole Antenna..................31
Modifying the Fire Ball..........................35
A Sentimental Journey............................44
Classified Ads...................................46


I'd say there was some improvement, but the jury is
still out on the $20 per year I spent on this puppy.

For me, there is not enough meat between the pages.

I will say that the MXM SupeRX/TX article, on the
xtal controlled transmitter and SupeRX receiver,
of which I own one, has one of the best jobs of
painting of the case and lettering.  The case, as
it turns out, is one of mine.  I did not plan this
and Bruce of MXM has some of my cases and George
De Grazio, WF0K, built up Bruce's kit and put it
in the case.  George did do a good job.


dit  dit
Chuck Adams  K5FO  CP-60 wpm
[e-mail]




From [e-mail]  Fri Feb  4 00:30:30 1994
Return-Path: <[e-mail]>
    for [e-mail] id AA27475; Thu, 3 Feb 94 21:30:24 -0800
    for @sgi.sgi.com:[e-mail] id AA24906; Thu, 3 Feb 94 23:30:16 -0600
    for @sgidal.dallas.sgi.com:[e-mail] id AA03005; Thu, 3 Feb 94 23:30:12 -0600
Date: Thu, 3 Feb 94 23:30:12 -0600
From: [e-mail] (Chuck Adams)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: K5FO  dit  dit


Gang,

On Friday, February 4th, 1994, Chuck Adams, K5FO,
will be leaving the internet.  The time for which
I will be gone is dependent upon a number of factors.

I have been going night and day for a lengthy period
of time.  I need the rest, so I'm taking a leave of
absence and thus, will lose my place on the net.

You guys and girls have been great and I have throughly
enjoyed the exchanges going on here.  There is a wealth
of knowledge and it is my wish that each and everyone
of you continue to keep up the good work.  Be good to
each other and yourselves.

Don't keep it to yourselves.  Spread the word.  QRP and
QRPp is here to stay.  Get off your laurels and write
your experiences, good and bad, and put them in print.
Do it in the QQ, QRPp, and start and contribute to local
news letters.  You learn and so do the readers.

I have met some new friends and will not disappear from
the face of the earth.  You'll hear my little peanut CW
signal on or near the QRP ARCI calling frequencies.  If
you hear me, holler.  I will go at your speed, no matter
what it is.

My thanks to each everyone.  God Bless and Keep You.

Special thanks to Bruce for keeping the QRP mailing group
alive and well.  I leave you all in good hands.  See you
at Dayton.....

dit  dit

Chuck Adams, K5FO  and I'm good in the callbook for the last 6 years.

--------------------------cut here------------------------
<<<<<<<<<<<<<<<<<<<<<<<<<<<SNAP>>>>>>>>>>>>>>>>>>>>>>>>>>>

Chuck Adams  K5FO  CP-60 wpm
[e-mail]




From [e-mail]  Fri Feb  4 00:39:40 1994
Return-Path: <[e-mail]>
    id m0pSJDI-0001t4C; Fri, 4 Feb 94 00:36 EST
Message-Id: <[e-mail]>
From: [e-mail] (Randy)
Subject: Re: Hotel room QRP operation/antenna
To: [e-mail] (Andrew M. Cohn)
Date: Fri, 4 Feb 1994 00:36:20 -0500 (EST)
Cc: [e-mail] (qrp @think.com)
In-Reply-To: <Pine.3.89.9402032227.A27687-0100000@explorer> from "Andrew M. Cohn" at Feb 3, 94 10:42:12 pm
X-Mailer: ELM [version 2.4 PL21]
Content-Type: text
Content-Length: 1727

Ah! so THATS where you plan to run from....OK...

Get a 9' chicken band whip...fibreglass job.

Make up a C-clamp and angle bracket that can grip a window sill.....
or arrange some kinfd of support to hold the whip ,poking out the
window, from inside.

Now...make an 80 turn coil on some 3" pvc pipe....18 -- 14 ga wire will
do....space out the turns to not short ( bare wire we are talking about)
and rig up all this:

                           /
                         /  whip  45 deg angled
                       /
                     /
        coil       /
A o--uuuuuuuuuu---O
    |    V tap
    +----o

G o----------o< gnd to radiator or other large metal somthing

THAT, you feed via very short coax to your tuner...

Here's why:
            That mess up there only resonates the ant
            Your 'tuner' only adjusts the in/out Z unless you
            like lots of loss forcing it to also resonate
            an antenna not resonant.        ----
            ( not enough ckts in a tuner to do BOTH)
Have ready
          a few caps of 470uuf 500v  to add across  A G  to help
tuner reach the very low Z for 80 and 40 mtrs use.
(ant loaded ant like that wants to offer a very low Z)

That, should do you.

You can do the same trick with some random wire slung across the room
by subbing the whip in that drawing above, with your wire.
You still need fasten up to some pipe or other large metal somthing
for your counterpoise/ground.

Have fun!


--
Randy KA1UNW              If you get a shock while
                         servicing  your  equipment,         "Works for me!"
randy@192.153.4.200             DON'T  JUMP!                     -Pete Keyes
                     You might break an expensive tube!

From [e-mail]  Fri Feb  4 05:48:58 1994
Return-Path: <[e-mail]>
       Fri,  4 Feb 94 10:48:48 GMT
Date: Fri,  4 Feb 94 10:40:03 GMT
From: [e-mail]
Subject: More bogus calls...
To: [e-mail]
X-Vms-Mail-To: EXOS%"[e-mail]"
Message-Id: <[e-mail]>

Randy (& Gang):
While we're on the topic of bogus calls, you're apparently not alone. A
couple years ago I bec
gan receiving QSLs from various contests for a call
(WB2B) I relinquished some years ago (moved to three-land, then back to
two and at the time preferred to have a call corresponding to my geographical
location). Later I received an OO report from an ARRL observer stating "I"
was out of band, and using a relinquished call-- asking "me" why I was doing
so. The OO never answered me, but the QSLs stopped flowing (at least for now).
I suspect there are quite a few lower class operators who scout the callbooks
for unused calls ( silent keyes, callsign changes -- now XX#X) and pirate them
especially for contesting.
If the FCC allows reissuance of callsigns, then maybe this will be more diffi-
cult to do.
I haven't operated HF in *YEARS* (apartment life and working on PhD leaves
not much room/time for ham radio). Anyways it does seem to happen, and Randy's
case is not isolated. If you do contact WB2B, it is not the real "ex" WB2B.



de WK2A
[e-mail]

From [e-mail]  Fri Feb  4 10:17:31 1994
Return-Path: <[e-mail]>
        id AA22008 for [e-mail]; Fri, 4 Feb 94 10:17:32 -0500
    (Smail3.1.28.1 #6) id m0pSSGD-000BAEC; Fri, 4 Feb 94 10:15 EST
    id AA16596 ; Fri, 04 Feb 94 10:03:59 GMT
Date: Fri, 04 Feb 94 15:08:24 GMT
Message-Id: <8868@jek>
From: [e-mail] (Jim Kearman)
To: [e-mail]
Subject: NorCal 40 Kits Available?

Need one for possible QST Product Review, but only if
kits will be available in the future.

Pse email direct to [e-mail]

72/73

Jim, KR1S



From [e-mail]  Fri Feb  4 10:59:34 1994
Return-Path: <[e-mail]>
    id AA15153; Fri, 4 Feb 94 10:59:09 EST
Date: Fri, 4 Feb 1994 10:59:08 -0500 (EST)
From: "Andrew M. Cohn" <[e-mail]>
Subject: The "MouseKey"
To: [e-mail]
Message-Id: <Pine.3.89.9402041011.A15025-0100000@explorer>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Content-Length: 1389

Gang...

Here's an idea for a MouseKey some of you might find useful. Personally,
I don't care for the standard straight key, and I needed a durable key
for the briefcase QRP station I'm putting together.

At a hamfest, I found a used 3-button mouse for $5. I rewired the guts so
that two conductors of the cable went directly to the left button. Then I
wired the right button in parallel. Next, I cut off the serial
connector and replaced it with a mini jack. Finally, I stuck on 4 flat
rubber feet at the bottom, along with Velcro (tm). The feet gave the
mouse stability, and the Velcro allowed the mouse to be attached to the
side of the rig for side-keying.

Most of you probably have a mouse attached to your computer, and you may
have absentmindedly tapped out morse code with it. Actually, with a
miminum of practice, you'll find a mouse makes a great key. In fact, it
will probably work well as a paddle for an electronic keyer, by wiring
the left button for dits and the right for dahs!

You can use the MouseKey as you would a regular mouse (with your palm over
it's body), or you can turn it around 180 degrees and use it more like a
standard straight key. Even as a straight key, you can use your index
finger for dits, and the third finger for dahs.  Probably, it would work
well in a mobile installation.

Just a thought. Anyway, it works for me!

andy/k4adl




From [e-mail]  Fri Feb  4 11:39:41 1994
Return-Path: <[e-mail]>
X-Ns-Transport-Id: 0000AA0097D468A730FE
Date:     Fri, 4 Feb 1994 08:39:12 PST
Sender: [e-mail]
From: [e-mail]
Subject: nn1g-mkII parts lists, etc
To: [e-mail]
Cc: [e-mail]
Reply-To: [e-mail]
Message-Id: <" 4-Feb-94  8:39:12 PST".*[e-mail]>

Hi,
I am trying to build a printed wiring board set for the
nn1g-mkII transceiver from  the files on the QRP FTP SERVER
at Think.com.

I've located the rx and tx board artwork files         in
        sub-directory   \qrp\artwork\nn1g_mkII

Can someone help me locate the files containing for the RX and TX
boards:
        1. Component Stuffing Diagrams
        2. Part Lists
        3. Schematics

Do the files located in
        sub-directory          \qrp\artwork\nn1g_mkI
                 nn1g.mark1.parts
                 nn1g.mark1.ps

apply to nn1g_mkII project?

Can someone list all of the need files and locations for that project?

Looking forward to more buildable QRP projects.

Appreciate any help.
Thanks,

73 Dave, w6mik

From [e-mail]  Fri Feb  4 12:41:19 1994
Return-Path: <[e-mail]>
    id AA27641; Tue, 1 Feb 94 14:02:40 -0800
Message-Id: <[e-mail]>
Date: Tue, 1 Feb 94 14:02:40 PST
From: N1OOQ Tom R. @ MRO1  01-Feb-1994 1652 <[e-mail]>
To: [e-mail]
Apparently-To: [e-mail]
Subject: QRP Notebook shopping list

Ok, I had one request, so I guess that's good enough! 8-)

I, believe it or not, went through all the schematics in QRP Notebook and
compiled this list of parts needed. This is everything that appeared more than
once or twice. If it has a + next to it, buy lots of them! Oh BTW, some of the
important stuff, like air variable caps, are in onesie-twosie amounts, so they
don't show here.

So now you all know what to stock up on for a QRP junk box...

Transistors     Amidon cores    Diodes  Electrolytic    Var Caps        Chokes
2N2222A+        T24-43          1N914+  or Tantulum     100 trim+       1mH+
2N3553          T37-6+                  1+                              22uH+
2N3866          T50-2+                  2.2+                            15uH
2N3904+         T50-6+                  4.7                             10uH
2N4400+         T68-2+                  10+
2N4401+         T68-6                   22+  (16 & 25V)
2N4403+         FT37-43+                220
2N4416+         FT50-43+
2N5179+         FT50-63
MPF102+         BLN43-202
40673           Bead, 850mu

Pots    NP0 Caps        Caps    Hardware        Op Amps
100k+   0.001++ (102)   150     6-32            741
10k+    0.01++  (103)   68      4-40            747
1k      0.1++   (104)                           TL081
                                                LM386

Resistors  1/4w  1/2w
10+     100++   1.0k++  10k++   100k++
15      150     1.5k+   12k     220k+
22      180+    2.2k+   15k     470k+
33+     220     2.7k    22k+
47+     270+    3.3k+   27k+
56+     390     3.9k    33k
        470+    4.7k+   47k+
        560+    5.6k+   56k+

-Tom R.   N1OOQ   [e-mail]

From [e-mail]  Fri Feb  4 12:45:11 1994
Return-Path: <[e-mail]>
    id AA20533; Fri, 4 Feb 94 12:44:20 EST
Date: Fri, 4 Feb 1994 12:44:18 -0500 (EST)
From: "John A. Evans" <[e-mail]>
Subject: Re: NorCal 40 Kits Available?
To: Jim Kearman <[e-mail]>
Cc: [e-mail]
In-Reply-To: <8868@jek>
Message-Id: <Pine.3.89.9402041245.A20381-0100000@explorer>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Content-Length: 1140



On Fri, 4 Feb 1994, Jim Kearman wrote:

> Need one for possible QST Product Review, but only if
> kits will be available in the future.
>
> Pse email direct to [e-mail]
>
> 72/73
>
> Jim, KR1S

I would love one, too, but am willing to sacrifice any chance of getting
on for a guaranteed issue of the Sierra.

As I understand it, all of the new batch are committed and the club has
no plans for further batches, in order to concentrate on the Sierra design.

Still, wouldn't it be nice to get both &^)

72

-------------------------------------------------------------------------------
John A. Evans, Capt, USAF                     "My number one goal as a
VHDL/EDA Engineer                              runner is to live long enough
N3QOO Tech Plus !!!                            to place in my age group!!!"

[e-mail]                              Linux - the OS of choice !!
-------------------------------------------------------------------------------
Once data encryption is outlawed, only outlaws will have data encryption !!!
-------------------------------------------------------------------------------


From [e-mail]  Fri Feb  4 13:20:36 1994
Return-Path: <[e-mail]>
        id AA26836 for [e-mail]; Fri, 4 Feb 94 13:20:39 -0500
    (Smail3.1.28.1 #6) id m0pSV7L-000BAEC; Fri, 4 Feb 94 13:18 EST
    id AA17110 ; Fri, 04 Feb 94 13:08:40 GMT
Date: Fri, 04 Feb 94 18:08:38 GMT
Message-Id: <8926@jek>
From: [e-mail] (Jim Kearman)
To: [e-mail]
Subject: Club Kits for Review

I've changed my mind. It's really not a good idea for QST
to review club kits, as they come and go so fast. By the
time we got the review in print the stock would be sold
out. I understand that some second sources are kitting
up parts for some projects, but the parts quality seems
to vary all over the landscape, so a review isn't valid.

We MAY consider reviewing commercial kits in the future,
sort of a one-shot comparative review of stuff we haven't
looked at already. Please don't volunteer to build a kit
for us. This hasn't worked out well in the past; we prefer
to keep tighter control over assembly, alignment and
testing. It's the least we can do for our readers.

By the way, you may be interested in how the process works.
A staffer is selected from volunteers, by the Product
Review editor, Mark Wilson, AA2Z. The staffer must be
qualified, of course. As bad as my eyesight is getting,
I'm not sure I'm qualified! The kit is built on the
reviewer's time, but testing is done by the lab staff.
The reviewer has the option of keeping the kit or being
paid for writing the review. In the latter case, the kit
is offered for sealed-bid auction in QST.

73

Jim, KR1S



From [e-mail]  Fri Feb  4 14:09:54 1994
Return-Path: <[e-mail]>
    id AA15479; Fri, 4 Feb 1994 14:08:24 -0500
    id AA14950; Fri, 4 Feb 94 14:08:29 EST
    id AA18226; Fri, 4 Feb 94 14:08:27 EST
Message-Id: <[e-mail]>
    id AA25381; Fri, 4 Feb 94 14:08:23 EST
To: N1OOQ Tom R. @ MRO1 01-Feb-1994 1652 <[e-mail]>
Cc: [e-mail], [e-mail]
Subject: Re: QRP Notebook shopping list
In-Reply-To: Your message of "Tue, 01 Feb 94 14:02:40 PST."
             <[e-mail]>
Date: Fri, 04 Feb 94 14:08:22 EST
From: "John F. Woods" <[e-mail]>

Tom R. writes:
> I, believe it or not, went through all the schematics in QRP Notebook and
> compiled this list of parts needed.

And a fine list it was, indeed (which I plan to compare against my collection
tonight in case I've missed anything :-), but there's one minor trap
awaiting:

The 40673 is no longer in production, and apparently replacements for it are
getting scarce as well.  I *think* the 3N200 is a good replacement, but it may
not be being produced as well.  Danny Stevig's catalog newsletters usually
mention whichever dual-gate MOSFET he's managed to stock up on most recently.

It's kind of a shame, really; there's a few parts that are sort of icons for
their device type (2N2222, MPF102, 1N914, 1N4001), but there's no longer an
icon for the dual-gate mosfet...

John, WB7EEL

From [e-mail]  Fri Feb  4 14:28:25 1994
Return-Path: <[e-mail]>
    id AA26369; Fri, 4 Feb 94 14:28:08 EST
Date: Fri, 4 Feb 1994 14:28:08 -0500 (EST)
From: "John A. Evans" <[e-mail]>
Subject: Re: QRP Notebook shopping list
To: [e-mail]
Cc: [e-mail]
In-Reply-To: <[e-mail]>
Message-Id: <Pine.3.89.9402041452.A26286-0100000@explorer>
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Content-Length: 808



>
> -Tom R.   N1OOQ   [e-mail]
>
Tom - I'd mail directly, but it bounces !!!

BTW - like your call sign

thanks for the parts list - a good place to start!

john
N3QOO

-------------------------------------------------------------------------------
John A. Evans, Capt, USAF                     "My number one goal as a
VHDL/EDA Engineer                              runner is to live long enough
N3QOO Tech Plus !!!                            to place in my age group!!!"

[e-mail]                              Linux - the OS of choice !!
-------------------------------------------------------------------------------
Once data encryption is outlawed, only outlaws will have data encryption !!!
-------------------------------------------------------------------------------


From [e-mail]  Fri Feb  4 14:55:56 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Fri, 4 Feb 1994 13:57:39 CST
Date: Fri, 04 Feb 1994 13:57:39 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: MXM
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: JMG
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-Transfer-Encoding: 7BIT

My faith in kits is starting to come back.. after my recent exeriences
with the Radio Kit kit (and thanks to everyone.. I finally did figure
out what was meant by "link").

I received my MXM new QRP 20 meter transceiver kit that Chuck has
written about. I built one of the original MXM transmitter/receivers..
was crystal controlled.. pretty neat.. put it in a tiny box.. but had
too much trouble with being stuck on a single transmitt frequency.. so
still it sits.. anyone want to buy it cheap?

Opened the box carefully and started looking at what was contained
therein....The different parts for each stage of the radio are packaged
seperately. Attached to the bag of parts is a very nicely printed list
of the parts. The board is CLEARLY silk screened. The schematic and
overlay are clear and seem easy to read (what a novel idea). the case
that came with it looked REAL familiar.. same as the one i got from
Chuck Adams... the case is not pre-punched or labeled. One small board..
plenty of room in the case for keyer and additional filters.

The directions say to built the radio a stage at a time and test each
out.. I like this concept.

Well that is about as far as I got.. but think I can plan on enjoy
building this one.. and I believe it already has the "Adams" stamp of
approval..so I can rest easy.


72

Jeff, AC4HF

From [e-mail]  Fri Feb  4 14:57:25 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Fri, 4 Feb 1994 13:59:25 CST
Date: Fri, 04 Feb 1994 13:59:25 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: Oak Hills
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: JMG
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-Transfer-Encoding: 7BIT

Latest breaking news!!!

rumor has it that Oak Hills will in the VERY near future (couple of
weeks?) come out with a new offering... a dual band 20/40 QRP
transceiver. It will be in the Spirit Box.. and think a lot of the
circuitry will be similiar. ..don't think it will have the keyer
though..

Well..my two favorite bands...so I am excited.

72,

Jeff, AC4HF

From [e-mail]  Fri Feb  4 14:57:29 1994
Return-Path: <[e-mail]>
X400-Received:
 by mta mcigate in /PRMD=NT/ADMD=MCI/C=US/; Relayed; Fri, 4 Feb 1994 13:56:58 -0600
X400-Received:
 by /PRMD=NT/ADMD=MCI/C=US/; Relayed; Fri, 4 Feb 1994 13:56:50 -0600
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 by /PRMD=NT/ADMD=MCI/C=US/; Relayed; Fri, 4 Feb 1994 08:56:00 -0600
Date:  Fri, 4 Feb 1994 14:56:00 +0000
X400-Originator:  /DD.ID=cmwdr01/G=William/I=WD/S=Redfearn/@nt.com
X400-Mts-Identifier:
 [/PRMD=NT/ADMD=MCI/C=US/;mcigate.nt.285:04.01.94.19.56.50]
X400-Content-Type:  P2-1984 (2)
Content-Identifier:  RE: Mousekey
From: "William (W.D.) Redfearn" <[e-mail]>
Sender: "William (W.D.) Redfearn" <[e-mail]>
Message-Id:  <"15286 Fri Feb  4 13:56:53 1994"@nt.com>
To: [e-mail]
Subject:  RE: Mousekey

About six months ago I built a mousekey for my keyer to see how it would
work for mobile operation.
I scrounged up a three button mouse, cut off the serial connector, installed
a plug to fit the keyer (1/8" stereo), and wired the left button to make dots
and the right button for dashes.
The feel was considerably different from the regular paddles, but with some pra
ctice, I could manage a decent 13-15 wpm. I was able to use the heel of my hand
to hold the mouse down which left my fingers free to key. A velcro strap or som
ething similar to hold the mouse to my leg might work good too.
At any rate the mouse worked out to be a cheap and resonably effective set of
paddles. It did get a lot of attention during a CW open house during a
Cary ARC club meeting.
73 - Dave.

====================================================================
Dave Redfearn, SR PC LAN Analyst   Northern Telecom  RTP, NC.
ph.[phone]  email: [e-mail]    qrl? de N4ELM/qrp

All opinions are my own and do not necessarily reflect the views of
my employer, co-workers or any other person, real or imaginary.

From [e-mail]  Fri Feb  4 14:58:30 1994
Return-Path: <[e-mail]>
 <[e-mail]>; Fri, 4 Feb 1994 14:00:19 CST
Date: Fri, 04 Feb 1994 14:00:19 -0600 (CST)
From: "JEFF M. GOLD" <[e-mail]>
Subject: QST
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: JMG
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-Transfer-Encoding: 7BIT

HI,

did anyone else see the article in this month's QST on the QSOcorder..
sounds like fun..

72

Jeff, AC4Hf

From [e-mail]  Fri Feb  4 16:02:36 1994
Return-Path: <[e-mail]>
    id AA28817; Fri, 4 Feb 94 13:03:21 -0800
Message-Id: <9402042059.AA24747@itgmsm>
From: [e-mail]
To: [e-mail], [e-mail], [e-mail]
Subject: Re: QRP Notebook shopping list
Date: Fri, 04 Feb 94 12:58:00 PST
X-Mailer: Microsoft Mail V3.0


Joh WB7EEL writes:

> The 40673 is no longer in production, and apparently replacements for it
are
> getting scarce as well.  I *think* the 3N200 is a good replacement, but it
may
> not be being produced as well.  Danny Stevig's catalog newsletters usually
> mention whichever dual-gate MOSFET he's managed to stock up on most
recently.

The last time I needed some 40673s I went to the parts store and bought some
NTE222s from the NTE/ECG replacement parts line. Have *they* gone out of
production too?

73 from Burnaby,
laura VE7LDH

From [e-mail]  Fri Feb  4 16:40:41 1994
Return-Path: <[e-mail]>
 id <[e-mail]>; Fri,
 4 Feb 1994 15:40:09 CST (UTC -06:00)
Date: Fri, 04 Feb 1994 15:40:09 -0600 (UTC -06:00)
From: Doug Heacock <[e-mail]>
Subject: RCA 40673 replacements
To: [e-mail]
Message-Id: <[e-mail]>
X-Vms-To: IN%"[e-mail]"
X-Vms-Cc: HEACOCK
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Content-Transfer-Encoding: 7BIT

>And a fine list it was, indeed (which I plan to compare against my collection
>tonight in case I've missed anything :-), but there's one minor trap
>awaiting:
>
>The 40673 is no longer in production, and apparently replacements for it are
>getting scarce as well.  I *think* the 3N200 is a good replacement, but it may
>not be being produced as well.  Danny Stevig's catalog newsletters usually
>mention whichever dual-gate MOSFET he's managed to stock up on most recently.
>
>It's kind of a shame, really; there's a few parts that are sort of icons for
>their device type (2N2222, MPF102, 1N914, 1N4001), but there's no longer an
>icon for the dual-gate mosfet...
>
>John, WB7EEL

At least two of the replacement-parts indexes/catalogs list
replacement parts for the 40673, 3N200, and 3N202--I haven't actually
used these devices, but here are the numbers, in case anyone is
interested:

      Dual-gate N-channel MOSFETs

      Device     Replacements
      ------     ------------
      40673      NTE222, SK3050
      3N200      NTE222, SK3065
      3N202      NTE454, SK3991

The Mouser catalog #574 (good until 7/31/93, the most recent one I've
got at the office) shows the NTE222 available for $3.90; none of the
other replacements are listed in that particular catalog.

I hope this is useful.

73 de aa0ms
--
=================================================================
Doug Heacock, KANREN User Services | [e-mail]
Academic Computing Services        |   [e-mail]
The University of Kansas           |       [e-mail]
Lawrence, Kansas 66045             |        Amateur radio:  AA0MS
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From [e-mail]  Fri Feb  4 17:01:28 1994
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From: [e-mail]
Date: Fri, 4 Feb 94 15:48 EST
Original-From: mvubr!mvjf (James M Fitton [phone])
To: [e-mail]
Subject: QSOcorder


I acquired a defunct telephone answering machine with
a digital signal processor....digital message recording.

You can call CQ into it and it will record it digitally.
Just press the button.... 16 seconds of fine audio  or
32 seconds of coarse audio.
Bet it would work for CW also.


  73/72   Jim Fitton, W1FMR   QRP-NE   [e-mail]

From [e-mail]  Fri Feb  4 17:18:17 1994
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    for [e-mail] id AA00625; Fri, 4 Feb 94 14:18:11 -0800
    for @sgi.sgi.com:[e-mail] id AA00232; Fri, 4 Feb 94 16:17:52 -0600
    for @sgidal.dallas.sgi.com:[e-mail] id AA06588; Fri, 4 Feb 94 16:02:51 -0600
Date: Fri, 4 Feb 94 16:02:51 -0600
From: [e-mail] (Chuck Adams)
Message-Id: <[e-mail]>
To: [e-mail]
Subject: Oak Hills Rumor de AC4HF


Jeff,

didn't i post info about this more than a month ago?

someone check the archives.  see, i knew i was being ignored.  :-)

just had to get in one more post.  :-) ;-)


dit dit

Chuck Adams  K5FO  CP-60 wpm
[e-mail]