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Total 14 documents matching your query.

1. [AMPS] Commander HF 2500 (score: 1): Author: ren22@juno.com (JAY W STURTEVANT); Date: Sat, 21 Jun 1997 12:25:04 EDT; Hello Everyone! With regard to Bryan Short's posting, contact Command Technologies for the latest info to enable QSK and other connections on your new rig. I purchased my HF 2500 because I "play" har; /archives//html/Amps/1997-06/msg00325.html (7,386 bytes)
2. [AMPS] Commander HF 2500 (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 21 Jun 97 10:10:00 -0700; ...snip... Jay: - What is the heater voltage at the HF-2500's 3CX800A7 tube sockets? What is your line-voltage/electric mains voltage? thanks -Rich R. L. Measures, 805-386-3734, AG6K -- FAQ on WWW:; /archives//html/Amps/1997-06/msg00328.html (7,156 bytes)
3. [Amps] Commander HF 2500 (score: 1): Author: Howard Cawthra <hcawthra@sbcglobal.net>; Date: Wed, 20 Apr 2016 15:55:21 +0000 (UTC); I've acquired a near mint low usage commander HF2500. Amp works great, output is what it should be. It was originally purchased in 1993. My question is about the capacitors in the power supply, shoul; /archives//html/Amps/2016-04/msg00036.html (7,154 bytes)
4. Re: [Amps] Commander HF 2500 (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Thu, 21 Apr 2016 18:50:15 -0700; -- ORIGINAL MESSAGE --(may be snipped) REPLY: Howard, I'm sorry I can't answer your question but I can offer some advice based on a bad experience (twice) with that amplifier. They like to advertise; /archives//html/Amps/2016-04/msg00040.html (8,360 bytes)
5. [Amps] Commander HF 2500 (score: 1): Author: Jay Sturtevant <k2ztdx@gmail.com>; Date: Tue, 23 Jan 2018 10:05:55 -0500; Hello, My Commander HF2500, new in 1996, is still working up to spec, including plate voltage at 2,850 without a load. Should I consider replacing the filter caps? Thanks for your comments. Jay, K2ZT; /archives//html/Amps/2018-01/msg00131.html (9,103 bytes)
6. Re: [Amps] Commander HF 2500 (score: 1): Author: Jukka Tarvainen <tarjuk@gmail.com>; Date: Wed, 24 Jan 2018 16:32:45 +0000; Hi! Replaced caps from '98 model couple of years ago. K1TTT instructions were very helpful. Old caps looked fine. Amp has not been run very much, more search and pounce mode mostly CW. Usually 1-1.3; /archives//html/Amps/2018-01/msg00134.html (10,888 bytes)
7. Re: [Amps] Commander HF 2500 (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Wed, 24 Jan 2018 17:06:55 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: If you have the time and inclination, replacing them is a good idea. Filtering a HV supply for a legal limit amp is pretty heavy duty use due to ripple c; /archives//html/Amps/2018-01/msg00135.html (8,241 bytes)
8. Re: [Amps] Commander HF 2500 (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Thu, 25 Jan 2018 07:15:40 +0800; No. Not necessarily but what is critically important, is to check the value of the resistors across each of the filter caps. My friend, K4HB, had a filter cap erupt and burn out the section of board; /archives//html/Amps/2018-01/msg00136.html (10,487 bytes)
9. Re: [Amps] Commander HF 2500 (score: 1): Author: <kstover@ac0h.net>; Date: Wed, 24 Jan 2018 17:21:16 -0600; If it ain't broke..... R. Kevin Stover AC0H ARRL FISTS NAQCC SKCC Hello, My Commander HF2500, new in 1996, is still working up to spec, including plate voltage at 2,850 without a load. Should I consi; /archives//html/Amps/2018-01/msg00137.html (10,870 bytes)
10. Re: [Amps] Commander HF 2500 (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Wed, 24 Jan 2018 19:01:56 -0500; Since the PS board is in a dead end under the RF chassis it gets little to no air flow. Ive serviced many of those amps, replaced out of tolerance equalizing resistors, and most of the caps had exces; /archives//html/Amps/2018-01/msg00139.html (8,825 bytes)
11. Re: [Amps] Commander HF 2500 (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Thu, 25 Jan 2018 11:44:02 -0600; A friend of mine and I got into an old Command amp to fix a problem a friend of ours was having with it. Can't remember if it was a one or two tube amp, but I came away being glad I never owned one.; /archives//html/Amps/2018-01/msg00140.html (7,883 bytes)
12. [Amps] Commander HF 2500 (score: 1): Author: "Jim Thomson" <jim.thom@telus.net>; Date: Sat, 27 Jan 2018 13:57:58 -0800; <No. Not necessarily but what is critically important, is to check the <value of the resistors across each of the filter caps. <My friend, K4HB, had a filter cap erupt and burn out the section of <bo; /archives//html/Amps/2018-01/msg00142.html (11,284 bytes)
13. Re: [Amps] Commander HF 2500 (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Sun, 28 Jan 2018 19:49:50 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: Excellent advice. Do NOT be tempted to use carbon resistors. They are notorious for changing value over time. Metal Oxide Film is your friend. 73, Bill W; /archives//html/Amps/2018-01/msg00143.html (8,095 bytes)
14. Re: [Amps] Commander HF 2500 (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Mon, 12 Feb 2018 16:15:45 +0000; -- ORIGINAL MESSAGE --(may be snipped) REPLY: If you need to replace the resistors, you should use either metal film or metal oxide film type resistors. Both are very stable over time. Also, get a wa; /archives//html/Amps/2018-02/msg00011.html (7,470 bytes)

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