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21. Re: [Amps] 4100VD 3CPX1500A7 (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 19 Mar 2009 17:49:56 -0400
Like Carl said... http://www.wv7u.com/yc156amp/yc156amp.html http://k8bow.w4zt.com/ http://k4zc.w4zt.com/ http://w7iuv.com/yc156.htm http://k7rdx.w4zt.com/yc156/index.html http://www.moonbounce.dk/hf
/archives//html/Amps/2009-03/msg00491.html (11,825 bytes)

22. Re: [Amps] YOKOGAWA Medical Amplifier (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Tue, 24 Mar 2009 15:42:09 -0400
Check the archives! http://lists.contesting.com/archives//html/Amps/2008-05/msg00021.html http://lists.contesting.com/archives//html/Amps/2008-03/msg00020.html -Rex  K1HI        Rex Lint       Merrim
/archives//html/Amps/2009-03/msg00506.html (7,733 bytes)

23. Re: [Amps] YOKOGAWA Medical Amplifier (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Wed, 25 Mar 2009 11:19:49 -0400
You might talk to Steve, G3TPW. See http://www.g3tpw.co.uk/Page8EvenMoreFAQs.html. -Rex  K1HI        Rex Lint       Merrimack, NH Wish I could provide specifics but can't. That said, I had a similar
/archives//html/Amps/2009-03/msg00508.html (10,368 bytes)

24. Re: [Amps] 'red' cores versus 43 cores (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Sun, 29 Mar 2009 08:36:20 -0400
not flux coupled transformers, so that >the core's main function is to increase the inductance of the cores at low frequencies, not transfer energy. ?? Do you mean "increase the inductance of the tr
/archives//html/Amps/2009-03/msg00525.html (10,823 bytes)

25. Re: [Amps] Plate voltage for GS35B (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Fri, 3 Apr 2009 09:23:17 -0400
http://gs35b.com/gs35bvs8877.html says 4KV, same as 8877. -Rex  K1HI        Rex Lint       Merrimack, NH Hi all, Does anyone know how much plate voltage the GS35B can take? I have a transformer here
/archives//html/Amps/2009-04/msg00041.html (7,449 bytes)

26. Re: [Amps] Power Supply Question (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Wed, 15 Apr 2009 12:18:13 -0400
and run a FWD ...Or you could run each secondary to its own FWD then put the two doublers series... -Rex  K1HI        Rex Lint       Merrimack, NH Thanks to all who responded to this thread. Though
/archives//html/Amps/2009-04/msg00155.html (9,115 bytes)

27. Re: [Amps] High SWR (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Wed, 22 Apr 2009 22:02:24 -0400
Huh? 600 Volts? Where did that figure come from? -Rex  K1HI        Rex Lint       Merrimack, NH ORIGINAL MESSAGE: load. REPLY: I agree up to a point. The main villain with SWR, IMO, isn't loss, it is
/archives//html/Amps/2009-04/msg00228.html (9,293 bytes)

28. [Amps] FW: 8877s? (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Sat, 9 May 2009 09:05:03 -0400
Tom, You can always find the old AMPS emails - just click the http://lists.contesting.com/mailman/listinfo/amps at the end of any AMPS email, then select ARCHIVES. Sorry about your crash! -Rex  K1HI
/archives//html/Amps/2009-05/msg00049.html (7,115 bytes)

29. [Amps] Turns counter (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Tue, 22 Sep 2009 12:02:54 -0400
Hi guys, I'm looking for a "turns counter" with a crank on it to use as a knob for a vacuum variable. Who's got something they can part with? -K1HI- Rex Lint, Consultant 26 Brek Drive Merrimack, NH 0
/archives//html/Amps/2009-09/msg00260.html (6,372 bytes)

30. [Amps] FW: QRO Questions (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Fri, 5 Feb 2010 18:08:24 -0500
The VW 411 station wagon in the '70's was very sensitive to RFI. My engine would die when I modulated. So I moved the rig from my '411 to my van. Just for kicks, I pulled up beside a '411 at a stop l
/archives//html/Amps/2010-02/msg00135.html (11,297 bytes)

31. [Amps] Reed Relay for QSK (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Mon, 8 Feb 2010 09:35:00 -0500
Hi crew, I'm modifying a SB-220 for QSK per Richard Measures' (AG6K) design which calls for a Matsushita RSD-12v reed relay for switching the amp input, and it looks like they are obsolete, so I'm un
/archives//html/Amps/2010-02/msg00233.html (7,006 bytes)

32. Re: [Amps] Reed Relay for QSK (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Mon, 8 Feb 2010 09:57:10 -0500
I sent him email, haven't heard anything. I didn't know he had a kit. Thanks for the response! -Rex  K1HI        Rex Lint       Merrimack, NH --Original Message-- From: Dave Harmon [mailto:k6xyz@sbcg
/archives//html/Amps/2010-02/msg00235.html (8,983 bytes)

33. Re: [Amps] 3-500Z grid short question (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Tue, 9 Feb 2010 13:38:38 -0500
Steve, See the tool at http://lists.contesting.com/archives//cgi-bin/namazu.cgi?idxname=Amps and you can search the AMPS archives yourself! Best, -Rex  K1HI        Rex Lint       Merrimack, NH I'm lo
/archives//html/Amps/2010-02/msg00284.html (8,412 bytes)

34. [Amps] SB-221 Problem - Slow on the uptake (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 18 Feb 2010 12:01:53 -0500
Hi Wizards, After I replaced the TR relay, the amp seems to take a 20 milliseconds to develop full output. That tends to clip off part of the first CW character. We jumpered the bias ON, then switche
/archives//html/Amps/2010-02/msg00521.html (6,874 bytes)

35. Re: [Amps] SB-221 Problem - Slow on the uptake (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 18 Feb 2010 22:04:47 -0500
Does it with ALL exciters. Guess the input network is something we haven't looked at though. Thanks, -Rex K1HI Rex Lint Merrimack, NH From: James Colville [mailto:jimw7ry@gmail.com] Sent: Thursday, F
/archives//html/Amps/2010-02/msg00540.html (8,847 bytes)

36. Re: [Amps] Amps] Solenoid polarity on DC reed relays (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 11 Mar 2010 09:01:17 -0500
Bill, I'm doing a similar project with my SB-220, but the HF version. I got the reed relay from Richard Measures. He also has things to say about snubbing diodes and resistors. See "High Speed Switch
/archives//html/Amps/2010-03/msg00171.html (12,209 bytes)

37. [Amps] FW: Amps] Solenoid polarity on DC reed relays (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Thu, 11 Mar 2010 09:04:51 -0500
Bill, I'm doing a similar project with my SB-220, but the HF version. I got the reed relay from Richard Measures. He also has things to say about snubbing diodes and resistors. See "High Speed Switch
/archives//html/Amps/2010-03/msg00172.html (11,296 bytes)

38. [Amps] Revamping a really ugly amp (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Sat, 13 Mar 2010 14:04:07 -0500
I bought an old H/B amp that I'm totally revamping. It's 2 x 3-500Z's with a 4KV power supply. It USED to have a pi-network with a vacuum variable plate capacitor and a regular variable loading capac
/archives//html/Amps/2010-03/msg00203.html (8,184 bytes)

39. Re: [Amps] Revamping a really ugly amp (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Sat, 13 Mar 2010 16:32:36 -0500
Good point: I hadn't thought of that. It's probably like a voltage divider. So the relay should be able to isolate (almost) 4k volts (at least the higher bands). So looks like vacuum relays on the hi
/archives//html/Amps/2010-03/msg00211.html (9,444 bytes)

40. Re: [Amps] Revamping a really ugly amp (score: 1)
Author: "Rex Lint" <rex@lint.mv.com>
Date: Sat, 13 Mar 2010 16:36:43 -0500
A variable inductor makes band changes too slow in contests (unless I make 6 amps!) -Rex  K1HI        Rex Lint       Merrimack, NH Rex I would keep the variable inductor as it represents an ideal sit
/archives//html/Amps/2010-03/msg00212.html (10,864 bytes)

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