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1. [Amps] Legal Limit Amps using 4CX250B tubes (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Tue, 24 Sep 2002 23:45:00 +0200
Hi Bill Take a look in Ham Radio Magazine April 1987, p 63-72. "A three tube 4CX250B linear amplifier" by YU1AW. It's a 2m amplifier. I have a copy of the article that I can copy if you want it. 73 /
/archives//html/Amps/2002-09/msg00232.html (7,640 bytes)

2. [Amps] Design around an 8938 for 432MHz, circa 1980? (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Sun, 21 Jul 2002 15:54:37 +0200
Hi all Anyone familiar with this 432MHz amplifier model, built around 1980? The tube is a 3CX1500C7/8938 and it is a stripline type amplifier, similar to the one described by K1FO in the ARRL UHF/SHF
/archives//html/Amps/2002-07/msg00374.html (6,996 bytes)

3. [Fwd: [Amps] Design around an 8938 for 432MHz, circa 1980?] (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Sun, 21 Jul 2002 22:07:20 +0200
Thanks to both Steve and Harry for the information. 73, Einar
/archives//html/Amps/2002-07/msg00385.html (8,796 bytes)

4. [Amps] OT - Is there a Kenwood reflector like this one? (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Thu, 09 May 2002 09:47:21 +0200
Hi Surf to www.qth.net There you'll find a Kenwood reflector. 73 // Einar
/archives//html/Amps/2002-05/msg00106.html (7,551 bytes)

5. [Amps] SB-220 for WARC bands (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Sat, 23 Mar 2002 00:36:57 +0100
My guess is that he or she needs the power. SM3MXR // Einar
/archives//html/Amps/2002-03/msg00516.html (8,535 bytes)

6. [AMPS] QY5-3000A in hf amp (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Fri, 16 Nov 2001 22:32:17 +0100
Hi Howard That was a very common tube in Philips radio/TV transmitters in Sweden so they were quite common here also. Philips name is QBL5-3500. The tube is also known as 6076. Here is some info: htt
/archives//html/Amps/2001-11/msg00293.html (8,062 bytes)

7. [AMPS] QY5-3000A in hf amp (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Fri, 16 Nov 2001 22:59:53 +0100
Hi again Howard I found the page with info about the "Daffy" amps: http://www.pocab.se/amp/g2daf.htm 73 // Einar // SM3MXR -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesti
/archives//html/Amps/2001-11/msg00294.html (7,693 bytes)

8. : [AMPS] 813 amp (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Mon, 03 Sep 2001 09:55:05 +0200
Hi Steve Expect about 10dB of gain at 3kV, so 13-1400w should be possible with 135watts of drive. 813's can stand a lot of spanking, but I wouldn't use them for longer rtty monologes at that power le
/archives//html/Amps/2001-09/msg00025.html (8,923 bytes)

9. [AMPS] FT100D driving Alpha 87a (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Thu, 02 Aug 2001 01:22:47 +0200
And some hams from your neck of the woods are very fast in judging without necessary information. I feel no responsibility for what other Swedish Hams do or say about G2DAF or other subjects. Do you
/archives//html/Amps/2001-08/msg00008.html (10,227 bytes)

10. [AMPS] FT100D driving Alpha 87a (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Thu, 02 Aug 2001 01:23:26 +0200
I'm not so sure, but I agree that you didn't use THAT four letter word that, although you needed about twentyfive four letter words to write your mail. Your suggestion was tried when constructing the
/archives//html/Amps/2001-08/msg00009.html (11,476 bytes)

11. [AMPS] Kenwood ts2000 driving a G2DAF amp (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Fri, 03 Aug 2001 10:25:25 +0200
If so, the G2DAF invention from the fifties or sixties is about as good or bad as the fairly new Kenwood TS2000. 73 Einar // SM3MXR -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps
/archives//html/Amps/2001-08/msg00025.html (8,459 bytes)

12. [AMPS] Kenwood ts2000 driving a G2DAF amp (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Sat, 04 Aug 2001 00:42:20 +0200
No I have not measured it. Someone on this list said that the TS2000 has a lousy TX with IMD just a few figures better than 20db below pep. I think the figures came from a British test of the radio.
/archives//html/Amps/2001-08/msg00039.html (10,033 bytes)

13. [AMPS] FT100D driving Alpha 87a (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Wed, 01 Aug 2001 02:03:20 +0200
I don't understand what G2DAF has to do with this? Please explain? The box adds no Shit to the signal .... just a few minutes to much, makes alot of Shit .... Common huh? Einar -- FAQ on WWW: http://
/archives//html/Amps/2001-07/msg00000.html (8,657 bytes)

14. [AMPS] FT100D driving Alpha 87a (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Sat, 28 Jul 2001 11:48:31 +0200
Hi Curt I know a Swedish guy who has made some little box that would do what you ask for. It has independent maximum output adjustment for every HF-band in the FT1000. Hearsay states that it works pe
/archives//html/Amps/2001-07/msg00336.html (10,196 bytes)

15. [AMPS] 3 phase HT power supplies. (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Sun, 07 Jan 2001 21:05:56 +0100
Hi David (and all) If you already have the 3-phase supply, use it. But I wouldn't do it without at least a small capacitor across the HV. I tried a 3 phase 6-pulse supply without cap a few years back
/archives//html/Amps/2001-01/msg00253.html (10,008 bytes)

16. [AMPS] Siemens RS 1026 What is it?? (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Wed, 27 Sep 2000 00:46:39 +0200
Hi Mike Siemens RS1026 has the Eimac 5867A as an equivalent. "The 5867A is intended for use in industrial heating applications. The large heat storage capacity of the graphite anode aids in compensat
/archives//html/Amps/2000-09/msg01071.html (7,254 bytes)

17. [AMPS] Copper tube - semi-rigid (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Sat, 29 Apr 2000 22:42:51 +0200
Hi Mark, try your closest auto repair parts dealer. He should have copper brake pipes in the diameter and length you need. 73 // Einar / SM3MXR -- FAQ on WWW: http://www.contesting.com/ampsfaq.html S
/archives//html/Amps/2000-04/msg00193.html (7,390 bytes)

18. [AMPS] 5 position coax switch = HOSCHA (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Thu, 10 Dec 1998 13:24:18 +0100
Hi Mark, try HOSCHA in Germany. They make excellent remote switches, able to handle QRO power, well above what you ask for. 73 de Einar // sm3mxr@swipnet.se -- FAQ on WWW: http://www.contesting.com/a
/archives//html/Amps/1998-12/msg00184.html (6,832 bytes)

19. [AMPS] How to build the ultimate HF amplifier ? (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Fri, 30 Oct 98 12:04:54 PST
Hi John et all -- On Fri, 23 Oct 1998 17:05:37 +0200 John Fielding <johnf@futurenet.co.za> wrote: That is a very nice tube! Excused for the lack of handles! Quite commonly used among 2m moonbounce op
/archives//html/Amps/1998-10/msg00501.html (13,701 bytes)

20. [AMPS] SB-220 = SB-221 ? (score: 1)
Author: sm3mxr@swipnet.se (Einar Persson)
Date: Fri, 3 Apr 98 11:19:05 PST
Hello all I have a HEATHKIT SB-220 and is offered an SB-221. I GUESS they are alot the same (2x3-500Z). I haven't seen it yet and want to know if there is a big difference between the two? Can someon
/archives//html/Amps/1998-04/msg00021.html (7,040 bytes)


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