- 1. [Amps] How to check a 3CX1200A7 (score: 1)
- Author: aa7bg@3rivers.net (Matt & Carrie Trott)
- Date: Tue, 8 Oct 2002 15:43:52 -0600
- I'm not getting any idling current on my Henry 3K Premier. Continuity checks okay from the high voltage connector to the tube. I can hear the relay clicking when I key the amp, but no idling current.
- /archives//html/Amps/2002-10/msg00075.html (7,109 bytes)
- 2. [AMPS] What Tube for Home brew (score: 1)
- Author: aa7bg@3rivers.net (Matt--K7BG)
- Date: Thu, 08 Oct 1998 08:29:59 -0600
- Ignoring the latest and greatest "Z7" for the moment. What exactly are the differences between the A7 and the D7? I searched all the amp archives and found nada. Are the 1200A7 and the 1200D7 interc
- /archives//html/Amps/1998-10/msg00064.html (8,443 bytes)
- 3. [AMPS] Alpha 78 problem (score: 1)
- Author: aa7bg@3rivers.net (K7BG Matt Trott)
- Date: Sat, 10 Oct 1998 00:15:47 -0600 (MDT)
- There's a wirewound resistor in front of the xfrmr. Actually there are three of them. THey can open when hot and cause the amp to shut off. I think the one that went bad in my 374A was a 15w 10 ohm.
- /archives//html/Amps/1998-10/msg00082.html (7,737 bytes)
- 4. [AMPS] Drake L7 input circuit tuning (score: 1)
- Author: aa7bg@3rivers.net (Matt--K7BG)
- Date: Sun, 18 Oct 1998 23:35:59 -0600
- I just did the modification to put my L7 on 10 meters. Works like a champ. I now need to retune the tuned input circuit for 15 meters. There is a step by step process in the manual that states how to
- /archives//html/Amps/1998-10/msg00279.html (7,469 bytes)
- 5. [AMPS] Purpose of CW/SSB switch (score: 1)
- Author: aa7bg@3rivers.net (Matt--K7BG)
- Date: Fri, 11 Sep 1998 10:53:09 -0600
- Dick, So does this mean that one SHOULD NOT run older amps in the SSB/HI position while operating CW mode? I'm still a bit unclear on this after following this thread. I have been doing just that. OO
- /archives//html/Amps/1998-09/msg00136.html (9,624 bytes)
- 6. [AMPS] 3cx3000a7 versus 4cx15000 (score: 1)
- Author: aa7bg@3rivers.net (Matt--K7BG)
- Date: Sat, 26 Sep 1998 23:33:27 -0600
- I believe Bill Clinton is the only one running this much power stateside. 73, Matt--K7BG -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests
- /archives//html/Amps/1998-09/msg00287.html (8,038 bytes)
- 7. [AMPS] Drake L7 & 3-500Z's (score: 1)
- Author: aa7bg@3rivers.net (Matt--K7BG)
- Date: Sun, 02 Aug 1998 15:02:11 -0600
- I've tracked down the arcing in my L7. It's from the plate choke to the HV capacitor (circuit board) that is tapped from the hot side of the choke to the center of it. For some reason it's arcing her
- /archives//html/Amps/1998-08/msg00004.html (7,880 bytes)
- 8. [AMPS] FYI 3-600Z (score: 1)
- Author: aa7bg@3rivers.net (Matt--K7BG)
- Date: Wed, 05 Aug 1998 00:38:49 -0600
- I just noticed this on their web-page. I have no commercial interest and all that blather....... -- 1. Q. I understand Svetlana is developing a replacement for the 3-500Z. When will it be available a
- /archives//html/Amps/1998-08/msg00034.html (7,395 bytes)
- 9. [AMPS] open pin on 3-500Z (score: 1)
- Author: aa7bg@3rivers.net (Matt--K7BG)
- Date: Fri, 07 Aug 1998 20:07:57 -0600
- Well, I'll be jiggered. The one 3-500 that I thought was bad is actually good. THe only problem is that the solder holding the pin onto the internal grid lead (pin 2) is bum. I don't know if it got h
- /archives//html/Amps/1998-08/msg00063.html (7,063 bytes)
- 10. [AMPS] Drake L7 (score: 1)
- Author: aa7bg@3rivers.net (K7BG Matt Trott)
- Date: Sun, 26 Jul 1998 23:27:16 -0600 (MDT)
- I just came by a L7 and it works fine on 15 and 20. On 40 and 80 it arcs like blazes. Most likely the bandswitch? or could soft tubes have something to do with it? Also, I looked on the web for info
- /archives//html/Amps/1998-07/msg00186.html (6,682 bytes)
- 11. [AMPS] SB-200 panel meters (score: 1)
- Author: aa7bg@3rivers.net (Matt Trott--K7BG)
- Date: Sat, 10 Jan 1998 11:53:05 -0700
- Can anyone tell me a source for the panel meter for a Heathkit SB200? Thanks, Matt--K7BG -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests:
- /archives//html/Amps/1998-01/msg00026.html (6,712 bytes)
- 12. [AMPS] Alpha 374A kaput (score: 1)
- Author: aa7bg@3rivers.net (Matt Trott--K7BG)
- Date: Sun, 11 Jan 1998 09:22:34 -0700
- When I switch on the 374A it immediately blows the fuse(s). I think the last time this happened I was pointed to the 10K ohm resistor just in front of the xfrmr. I replaced that opened resistor a yea
- /archives//html/Amps/1998-01/msg00033.html (7,109 bytes)
- 13. [AMPS] 8874/3CX400A (score: 1)
- Author: aa7bg@3rivers.net (K7BG Matt Trott)
- Date: Sat, 24 Jan 1998 02:13:15 -0700 (MST)
- Anybody know where I can get one of these without selling my gold fillings? I have one that up and shorted on me. I spose it ain't a good idea to put one new one in with the one remaining "used" tube
- /archives//html/Amps/1998-01/msg00092.html (6,660 bytes)
- 14. [AMPS] Antenna relay SB200 (score: 1)
- Author: aa7bg@3rivers.net (Matt Trott)
- Date: Mon, 06 Oct 1997 00:07:59 -0600
- Where is the best place to get one of these? Does Radio Shack carry a relay that will work/fit? Amp won't key and thin this must be the problem. 73, Matt -- FAQ on WWW: http://www.contesting.com/ampf
- /archives//html/Amps/1997-10/msg00026.html (6,852 bytes)
- 15. [AMPS] SB-200 (score: 1)
- Author: aa7bg@3rivers.net (Matt Trott)
- Date: Fri, 19 Sep 1997 21:50:32 -0600
- A friend of mine just purchased an SB200 from an estate. The lights come on but nobody's home. It appears that all is working but his rig won't key the amp. Is the relay bad?? If so do you know where
- /archives//html/Amps/1997-09/msg00325.html (6,959 bytes)
- 16. [AMPS] Alpha 374A (score: 1)
- Author: aa7bg@3rivers.net (K7BG Matt Trott)
- Date: Sun, 9 Mar 1997 22:33:38 -0700 (MST)
- The old 374A seems to be acting up a bit. Every time I turn it on it trips off. It did stay on one time long enough for the amber meter lights to turn to green, but something is definitly haywire. Mo
- /archives//html/Amps/1997-03/msg00099.html (7,244 bytes)
- 17. [AMPS] Alpha 374A (more) (score: 1)
- Author: aa7bg@3rivers.net (K7BG Matt Trott)
- Date: Tue, 11 Mar 1997 23:58:46 -0700 (MST)
- Thanks for the replies re my 374A tripping out within seconds after turn on. Just got back from a road trip so just read my mail. I pulled both tubes and it didn't change it's behavior one bit. I thu
- /archives//html/Amps/1997-03/msg00132.html (7,098 bytes)
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