From signalone@mailman.qth.net  Wed Dec 11 18:42:49 2002
From: signalone@mailman.qth.net (W2AGN)
Date: Wed, 11 Dec 2002 13:42:49 -0500
Subject: [SignalOne] CX7A Drive (was arcing)
Message-ID: <3DF740D9.20881.EAA7C9E@localhost>

Well, I finally got the nerve up to take out the driver board, and 
replace the driver transistor.  Even though I showed "some" drive at the 
grid, it wasn't enough to budge the plate current above the 100ma 
resting.

SO, I replaced the transistor (Q4) with a new 2n5641, put it back 
together...and still no drive. I show a little RF at the output of the 
first driver transistor, Q3 (which I didn't replace), and much more on 
the collector of the new "final" driver transistor, but still not enough. 
New transistor gets warm, while Q3 stays pretty cool.

Tried adjusting R19 no difference, although does affect RF level when I 
look at it with RF probe.
Bias, Screen Voltages are good.

I even, just for the heck of it, tried connecting a little QRP transmtter 
(1/2 watt) to the grid of the final tube,...and darned if it didn't show 
drive then! So I am sure it is the driver board. Next, I guess I better 
replace the other 2N5641 (Q3). (I have already replaced C30). 

Any other suggestions?
---
+-++-++-++-++-+   John L. Sielke
|W||2||A||G||N|        http://www.w2agn.net [UPDATED]
+-++-++-++-++-+    Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS

From signalone@mailman.qth.net  Wed Dec 11 23:51:43 2002
From: signalone@mailman.qth.net (James C. Garland)
Date: Wed, 11 Dec 2002 18:51:43 -0500
Subject: [SignalOne] Fwd to List: Where is Signal One?
Message-ID: <5.1.0.14.2.20021211184831.00bbf2e0@admin.muohio.edu>

Gang,
I received the following inquiry. If you have any information, pse respond 
directly to LU1DZ.
Thanks,
Jim W8ZR

>From: uranito@infovia.com.ar
>Date: Wed, 11 Dec 2002 17:19:47 -0300
>Subject: Signal One
>To: w8zr@arrl.net
>Organization: infovia.com.ar
>X-Mailer: Opera 5.12 build 932
>X-Infomail-Id: 1039616324.21DF01AC1E03AB.56324
>
>
>Hello dear OM:
>
>You have a very nice web site.
>
>May I borrow you with my problem?...
>
>The problem is that I buy a new tranceiver to Signal One and I think that
>they "blow up" with my money.
>
>I have a letter from last January with a lot of excuses and then a long
>silence...
>
>After this, we send an inquiry to the District Attorney in Arizona, but
>nothing has happend.
>
>They were listed in the ARRL page till 2000/2001
>Don Roehrs RF Engineering
>Cave Creek
>AZ
>They show a telephone 480-585-4025 and an email signalone1030@msn.com
>
>We are seeking for some help to find that guy.
>
>Muchos saludos y buenos DX
>Best regards and good DX
>Alberto U. SILVA LU1DZ
>GACW Coordinator
>http://gacw.no-ip.org


From signalone@mailman.qth.net  Thu Dec 12 03:36:20 2002
From: signalone@mailman.qth.net (signalone@mailman.qth.net)
Date: Wed, 11 Dec 2002 21:36:20 -0600
Subject: [SignalOne] CX7A Drive (was arcing)
Message-ID: <200212120336.VAA16937@crows.siteprotect.com>

------------------------------------------------
On Wed, 11 Dec 2002 13:42:49 -0500, W2AGN <w2agn@w2agn.net> wrote:

> Well, I finally got the nerve up to take out the driver board, and 
> replace the driver transistor.  Even though I showed "some" drive at the 
> grid, it wasn't enough to budge the plate current above the 100ma 
> resting.
> 
> SO, I replaced the transistor (Q4) with a new 2n5641, put it back 
> together...and still no drive. I show a little RF at the output of the 
> first driver transistor, Q3 (which I didn't replace), and much more on 
> the collector of the new "final" driver transistor, but still not enough. 
> New transistor gets warm, while Q3 stays pretty cool.
> 
> Tried adjusting R19 no difference, although does affect RF level when I 
> look at it with RF probe.
> Bias, Screen Voltages are good.
> 
> I even, just for the heck of it, tried connecting a little QRP transmtter 
> (1/2 watt) to the grid of the final tube,...and darned if it didn't show 
> drive then! So I am sure it is the driver board. Next, I guess I better 
> replace the other 2N5641 (Q3). (I have already replaced C30). 
> 
> Any other suggestions?

I know when I got mine, the first FET on the board had been replaced with an audio FET - no wonder it didn't work! Kludged in a dual-gate MOSFET (both gates tied together) and plenty of drive.

If in doubt trace backwards!

John K0JD
Milwaukee

From signalone@mailman.qth.net  Sun Dec 15 19:10:40 2002
From: signalone@mailman.qth.net (William McClatchey)
Date: Sun, 15 Dec 2002 14:10:40 -0500
Subject: [SignalOne] Another Orphaned Signal/One user of Milspec 1030CI
Message-ID: <sdfc8d71.047@messaging.piedmonthospital.org>

I have just found the Listserv, after using my 1030CI for several years =
now.  It has worked flawlessly, but recently blew a fuse (now fixed).  =
This led me to try to find the manufactururer after a  long period of time =
without looking.

Apparently Signal/One in Scottsdale is defunct, at least I cannot find =
anyone who knows of the identity or location of anyone.  A message in the =
digest here from a ham in Mexico suggests there were financial difficulties=
, and now silence.

Does anyone know the facts of the matter?  What has happened to the =
Signal/One company and its owners?

Lastly, does anyone know of someone who can repair the radio?  I have a =
Milspec 1030CI, s/n 0691588.  It is in good order now, but I have used the =
radio for some time, and don't want to be compelled to put it aside at =
some point in the future for lack of anyone who might be able to repair =
and align.  There must be others like me out there.

A message in this listerv dated December 2001 from Paul Kluwe, W8ZO, =
suggested his willingness to repair the Signal/One radio.  I am trying to =
contact Paul.

Any help would be appreciated...


Bill McClatchey, KK4C
Atlanta, GA
billmccl@bellsouth.net
404-313-1100 (cell)
404-233-6944(fax)


From signalone@mailman.qth.net  Tue Dec 17 01:06:42 2002
From: signalone@mailman.qth.net (Donald J. Battell)
Date: Mon, 16 Dec 2002 17:06:42 -0800
Subject: [SignalOne] Another Orphaned Signal/One user of Milspec 1030CI
References: <sdfc8d71.047@messaging.piedmonthospital.org>
Message-ID: <3DFE78A1.C04A3EE0@ix.netcom.com>

Hi;

Paul's email is:    pkluwe@aol.com, business phone, he answers sometimes  is (800) 237-8354 and mailing address is P.O. Box 84, Manchester, Michigan , 48158-0084.  The guys in AZ have probably been 10-7 for a year or so. Their past finally caught up with them.

73

K6DB

William McClatchey wrote:

> I have just found the Listserv, after using my 1030CI for several years now.  It has worked flawlessly, but recently blew a fuse (now fixed).  This led me to try to find the manufactururer after a  long period of time without looking.
>
> Apparently Signal/One in Scottsdale is defunct, at least I cannot find anyone who knows of the identity or location of anyone.  A message in the digest here from a ham in Mexico suggests there were financial difficulties, and now silence.
>
> Does anyone know the facts of the matter?  What has happened to the Signal/One company and its owners?
>
> Lastly, does anyone know of someone who can repair the radio?  I have a Milspec 1030CI, s/n 0691588.  It is in good order now, but I have used the radio for some time, and don't want to be compelled to put it aside at some point in the future for lack of anyone who might be able to repair and align.  There must be others like me out there.
>
> A message in this listerv dated December 2001 from Paul Kluwe, W8ZO, suggested his willingness to repair the Signal/One radio.  I am trying to contact Paul.
>
> Any help would be appreciated...
>
> Bill McClatchey, KK4C
> Atlanta, GA
> billmccl@bellsouth.net
> 404-313-1100 (cell)
> 404-233-6944(fax)
>
> _______________________________________________
> SignalOne mailing list
> SignalOne@mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/signalone


From signalone@mailman.qth.net  Tue Dec 17 01:17:53 2002
From: signalone@mailman.qth.net (signalone@mailman.qth.net)
Date: Mon, 16 Dec 2002 20:17:53 EST
Subject: [SignalOne] Another Orphaned Signal/One user of Milspec 1030CI
Message-ID: <77.4c32707.2b2fd541@aol.com>

In a message dated 12/16/02 8:07:56 PM, battell@ix.netcom.com writes:
> Hi;
> Paul's email is:=A0 =A0 pkluwe@aol.com, business phone, he answers sometim=
es=A0=20
> is (800) 237-8354 and mailing address is P.O. Box 84, Manchester, Michigan=
=20
> , 48158-0084.=A0 The guys in AZ have probably been 10-7 for a year or so.=20
> Their past finally caught up with them.
> 73
> K6DB
>=20
Have spent the last 6 months moving and now divide my time between Michigan=20
and Alaska.   Email is correct (Pkluwe@aol.com), but the other information=20
should now be:

Paul Kluwe,   W8ZO
PO Box 28
Edmore,   MI   48829
Phone: 989.427.1000

Paul Kluwe,   W8ZO
125 Main Street   #212
Ketchikan,   AK   99901
Phone: 907.723.7373

I still do repair work on any signal/one except the CX-7/A/B series, but onl=
y=20
as a hobby to help out fellow hams and not as a money-making proposition.  =20
My laboratory set-up is in Michigan, so that is where I do the work.   The=20
best way to reach me is always email !

Thanks & 73,
-Paul    W8ZO


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From signalone@mailman.qth.net  Wed Dec 18 18:32:16 2002
From: signalone@mailman.qth.net (W2AGN)
Date: Wed, 18 Dec 2002 13:32:16 -0500
Subject: [SignalOne] CX7A Problem..still
Message-ID: <3E0078E0.19197.E8595FB@localhost>

Well, I got e second 2N5641 to replace the other driver transistor. Went 
through the pain in the ... to pull the driver board again, and installed 
it. Put board back, and....still no drive ... I still show RF with an RF 
voltrmeter....a little at the base of Q3,  more at the collector, and a 
lot more at the output of Q4, which measures the same as at the tube grid 
pin. Bias is OK, Screen voltage OK, but Plate current doesn't budge over 
the resting 100 ma. in TUNE, with drive control up and R19 up. 

What am I missing?
---
+-++-++-++-++-+   John L. Sielke
|W||2||A||G||N|        http://www.w2agn.net [UPDATED]
+-++-++-++-++-+    Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS

From signalone@mailman.qth.net  Wed Dec 18 20:11:49 2002
From: signalone@mailman.qth.net (Mark, K5AM)
Date: Wed, 18 Dec 2002 20:11:49 +0000
Subject: [SignalOne] Re: Driver problem
In-Reply-To: <3E0078E0.19197.E8595FB@localhost>
Message-ID: <5.1.0.14.0.20021218200455.00a03c90@mail.zianet.com>

At 18:32 2002-12-18, W2AGN wrote:
>What am I missing?


Exact measurements.

Each transistor dc, E, B, and C.

Driver input level, mVpp.

RF levels, each transistor, in and out, mVpp. Also IC.

Driver output level, mVpp.

IC measurements, ALC potentiometer setting.
Variation in driver output with changes in
potentiometer setting.

PA bias, idle current, screen voltage.

PA grid drive, mVpp.



73,

Mark, K5AM    DM62ni

-----
Mark Mandelkern
Las Cruces, New Mexico, USA
k5am@zianet.com
First callsign: W9ECV, Milwaukee, 1948.
10 band DXCC confirmed. 134 countries on 6 meters.
Homebrew station:
<http://www.zianet.com/k5am/ncj/ncj.html>





From signalone@mailman.qth.net  Fri Dec 20 17:49:34 2002
From: signalone@mailman.qth.net (W2AGN)
Date: Fri, 20 Dec 2002 12:49:34 -0500
Subject: [SignalOne] 40468A FET Subst?
Message-ID: <3E0311DE.11595.18AB1A93@localhost>

Anyone know what a good substitute for the 40468A FET is?  Or, where some 
can be obtained?

Thanks,

---
+-++-++-++-++-+   John L. Sielke
|W||2||A||G||N|        http://www.w2agn.net [UPDATED]
+-++-++-++-++-+    Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS

From signalone@mailman.qth.net  Sat Dec 21 18:03:07 2002
From: signalone@mailman.qth.net (Ed Tanton)
Date: Sat, 21 Dec 2002 13:03:07 -0500
Subject: [SignalOne] 40468A FET Subst?
In-Reply-To: <3E0311DE.11595.18AB1A93@localhost>
Message-ID: <5.2.0.9.2.20021221130208.0207df28@pop.earthlink.net>

Did you try a 40673?

At 12:49 PM 2002-12-20, you wrote:
>Anyone know what a good substitute for the 40468A FET is?  Or, where some
>can be obtained?
>
>Thanks,
>
>---
>+-++-++-++-++-+   John L. Sielke
>|W||2||A||G||N|        http://www.w2agn.net [UPDATED]
>+-++-++-++-++-+    Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS
>_______________________________________________
>SignalOne mailing list
>SignalOne@mailman.qth.net
>http://mailman.qth.net/mailman/listinfo/signalone

73 Ed Tanton N4XY <n4xy@earthlink.net>

Ed Tanton N4XY
189 Pioneer Trail
Marietta, GA 30068-3466

website: http://www.n4xy.com

All emails <IN> & <OUT> checked by
Norton AntiVirus with AutoProtect

LM: ARRL QCWA AMSAT & INDEXA;
SEDXC NCDXA GACW QRP-ARCI
OK-QRP QRP-L #758 K2 (FT) #00057



From signalone@mailman.qth.net  Sat Dec 21 20:28:39 2002
From: signalone@mailman.qth.net (W2AGN)
Date: Sat, 21 Dec 2002 15:28:39 -0500
Subject: [SignalOne] 40468A FET Subst?
In-Reply-To: <5.2.0.9.2.20021221130208.0207df28@pop.earthlink.net>
References: <3E0311DE.11595.18AB1A93@localhost>
Message-ID: <3E0488A7.25330.1E62C4EE@localhost>

On 21 Dec 2002 at 13:03, Ed Tanton wrote:

> Did you try a 40673?
> 
> At 12:49 PM 2002-12-20, you wrote:
> >Anyone know what a good substitute for the 40468A FET is?  Or, where 
some
> >can be obtained?
> >

No, but I may have to. I have some of those, but I doubt they are the 
same. The 40468A is on the driver board in the CX7A. It also uses 40673s 
in the receiver.


---
+-++-++-++-++-+   John L. Sielke
|W||2||A||G||N|        http://www.w2agn.net [UPDATED]
+-++-++-++-++-+    Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS

From signalone@mailman.qth.net  Sat Dec 21 21:20:13 2002
From: signalone@mailman.qth.net (signalone@mailman.qth.net)
Date: Sat, 21 Dec 2002 16:20:13 EST
Subject: [SignalOne] Re: SignalOne digest, Vol 1 #67 - 1 msg
Message-ID: <150.192c3fb2.2b36350d@aol.com>

John,

If it's the 40468A on the RF Driver board, I have successfully replaced it 
with a MPF-102. They used to be available at Radio Shack. Good luck

Bob K4HJF


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From signalone@mailman.qth.net  Sat Dec 21 22:01:34 2002
From: signalone@mailman.qth.net (W2AGN)
Date: Sat, 21 Dec 2002 17:01:34 -0500
Subject: [SignalOne] Re: SignalOne digest, Vol 1 #67 - 1 msg
In-Reply-To: <150.192c3fb2.2b36350d@aol.com>
Message-ID: <3E049E6E.23631.1EB7CADE@localhost>

On 21 Dec 2002 at 16:20, RZaepfel@aol.com wrote:

> John,
> 
> If it's the 40468A on the RF Driver board, I have successfully replaced 
it 
> with a MPF-102. They used to be available at Radio Shack. Good luck
> 
> Bob K4HJF
> 
That's the one. Thanks, Bob.

---
+-++-++-++-++-+   John L. Sielke
|W||2||A||G||N|        http://www.w2agn.net [UPDATED]
+-++-++-++-++-+    Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS

From signalone@mailman.qth.net  Sun Dec 22 03:42:38 2002
From: signalone@mailman.qth.net (John Seboldt)
Date: Sat, 21 Dec 2002 21:42:38 -0600
Subject: [SignalOne] 40468A FET Subst?
In-Reply-To: <3E0311DE.11595.18AB1A93@localhost>
Message-ID: <5.1.0.14.0.20021221213141.00a169b0@seboldt.net>

At 12:49 PM 12/20/02 -0500, you wrote:
>Anyone know what a good substitute for the 40468A FET is?  Or, where some
>can be obtained?

I needed one at the input of the driver stage, where someone had 
substituted some kind of audio FET (no wonder I had no drive!)... and I 
just put in an NTE222 dual-gate MOSFET with both gates connected together. 
Don't know if they're continuing to make these in the NTE replacement line, 
but up to about 3 years ago I could always find one on the pegboard full of 
common NTE replacement devices at Acme Electronics (aka AEI Electronic 
Parts) in Minneapolis. Check the mail-order NTE distributors.  They're not 
cheap, about $5 each.

John Seboldt K0JD
Milwaukee, WI


From signalone@mailman.qth.net  Mon Dec 23 18:03:19 2002
From: signalone@mailman.qth.net (W2AGN)
Date: Mon, 23 Dec 2002 13:03:19 -0500
Subject: [SignalOne] CX7A Driver Board?
Message-ID: <3E070997.18268.50F0789@localhost>

Well, this thing is driving me nuts. I have had that driver board in and 
out four times. I have replaced Q2, Q3 and Q4. Still no go.

It WAS working, then I had a plate to grid short in the final tube, which 
blew something. I thought it was the driver transistor, but I guess not. 

As I mentioned, an RF probe indicates RF at the grid, but not enough to 
drive the tube. Oddly, since I replaced Q2, if I touch the grid  with the 
RF probe now, I get oscillation. (high plate current) . Same result with 
RF probe on input to driver board. 

Anyway, anyone have a spare CX7A driver board to sell? Thought I would 
check before I pull this one out again. 

---
+-++-++-++-++-+   John L. Sielke
|W||2||A||G||N|        http://www.w2agn.net [UPDATED]
+-++-++-++-++-+    Ex-K3HLU,TF2WKT,W7JEF,W4MPC,N4JS

