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1. [Amps] Commander HF-1250 problems (score: 1): Author: "Doug Ferguson" <thenewt@msn.com>; Date: Wed, 15 Jul 2009 23:30:19 -0700; I'm new to HF amps. and have a couple questions about a Commander HF-1250. I just bought one, used of course, with no manual. Found one online and it says the plate current at idle should be about 28; /archives//html/Amps/2009-07/msg00199.html (7,118 bytes)
2. [Amps] Commander HF-1250 problem (score: 1): Author: doug ferguson <thenewt@msn.com>; Date: Mon, 18 Nov 2013 20:57:46 -0800; Hi, My HF-1250 just went out. It was working fine and then the lights and fan started flickering for about 5 seconds and then the whole thing went dark. No smells or sounds and no apparent burn marks; /archives//html/Amps/2013-11/msg00366.html (7,792 bytes)
3. [Amps] Commander HF-1250 problem (score: 1): Author: doug ferguson <thenewt@msn.com>; Date: Mon, 18 Nov 2013 22:35:24 -0800; Thanks for the replies. I checked out the cord, plug and all other obvious connections that I could reach and everything is hardwired in place and nothing loose. It was suggested that it's probably a; /archives//html/Amps/2013-11/msg00369.html (7,239 bytes)
4. [Amps] Commander HF-1250 problem (score: 1): Author: doug ferguson <thenewt@msn.com>; Date: Tue, 19 Nov 2013 08:27:13 -0800; There is a Crydom TA2425 solid state relay between the power switch and the transformer. How can I bypass it to test. It has 2 input screws and 2 outputs - do I simply jumper them top to bottom or is; /archives//html/Amps/2013-11/msg00374.html (7,495 bytes)
5. [Amps] Commander HF-1250 problem (score: 1): Author: doug ferguson <thenewt@msn.com>; Date: Tue, 19 Nov 2013 10:10:31 -0800; ORIGINAL MESSAGE: (may be snipped) REPLY: If you go back and read the QST review for the HF-2500, the reviewer stated how nice it was to have an amplifier that is easy to service! I invite him to try; /archives//html/Amps/2013-11/msg00376.html (9,350 bytes)
6. [Amps] Commander HF-1250 problem (score: 1): Author: doug ferguson <thenewt@msn.com>; Date: Tue, 19 Nov 2013 17:55:39 -0800; Problem solved. The solid state relay that acts as inrush protection is bad. I bypassed it and it fired up normally. Now to find one! Thanks for all the replies - this is a great reflector. 73, Doug; /archives//html/Amps/2013-11/msg00381.html (7,778 bytes)
7. [Amps] Emtron DX3 (score: 1): Author: doug ferguson <thenewt@msn.com>; Date: Wed, 19 Aug 2015 06:50:19 -0700; Does anyone know of someone in the Pacific Northwest who can repair Emtron Amplifiers. I have a DX3 where the Plate Current intermittently goes full scale. It usually does it either momentarily or fo; /archives//html/Amps/2015-08/msg00065.html (7,118 bytes)
8. [Amps] Ten Tec Titan 425 (score: 1): Author: doug ferguson <thenewt@msn.com>; Date: Tue, 15 Dec 2020 21:47:31 +0000; I have a Titan amp that has over time, presented an increasing SWR to my Elecraft K3S. I have a SteppIR beam so it appears to be an input network problem in the Amp. I use the tuner in the K3 and all; /archives//html/Amps/2020-12/msg00024.html (7,047 bytes)
9. Re: [Amps] Ten Tec Titan 425 (score: 1): Author: doug ferguson <thenewt@msn.com>; Date: Wed, 16 Dec 2020 00:06:20 +0000; Thanks for the suggestions. Ill look at the coax and path to the tubes. As for the degradation of the tube(s), I get full output with exactly the same drive, about 50w on 40m, as Ive always gotten, s; /archives//html/Amps/2020-12/msg00032.html (8,647 bytes)

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