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21. Re: [TenTec] 422 Centurion blowing fuses... (score: 1): Author: David Propper <k2dp@charter.net>; Date: Fri, 31 Jan 2014 20:52:22 -0600; Hi Bry, Just thought that I would throw my 2 cents in as well. I purchased a used Centurion back in 2005, ran it for several years and then had the HV xfmr fail. Failure mode was an open secondary. I; /archives//html/TenTec/2014-01/msg00294.html (15,189 bytes)
22. Re: [TenTec] Centurion issue - capacitor arc over repair technique (score: 1): Author: David Propper <k2dp@charter.net>; Date: Sat, 24 May 2014 08:47:07 -0500; All, There was an article in QST within the past couple of years that showed a solution to this arc over repair problem: file down the arc over on the capacitor plates (rotor or stator) cover the dam; /archives//html/TenTec/2014-05/msg00654.html (10,593 bytes)
23. Re: [TenTec] Centurion + FT-1000MP (score: 1): Author: David Propper <k2dp@charter.net>; Date: Sat, 28 Feb 2015 16:40:29 -0600; Hi Carter, Your Centurion and Yaesu manuals should tell you everything you need to know. What is your question specifically ? I have a Centurion that I have used with my FT-2000. 73, Dave, K2DP _____; /archives//html/TenTec/2015-02/msg00158.html (8,080 bytes)
24. Re: [TenTec] Centurion + FT-1000MP (score: 1): Author: David Propper <k2dp@charter.net>; Date: Sat, 28 Feb 2015 18:36:48 -0600; Hi Carter, So let's start with just the "keying" circuit to place the amplifier into transmit. This is driven by the FT-1000mp relays. The FT-1000MP should show the pin connections for the DIN connec; /archives//html/TenTec/2015-02/msg00163.html (9,647 bytes)
25. Re: [TenTec] Status of Alpha RF Systems and TEN-TEC (score: 1): Author: David Propper <k2dp@charter.net>; Date: Sun, 19 Feb 2017 10:32:46 -0600; Mike, As the operator and maintainer of 3 Alpha amplifiers (1-8410 and 2-8100s) used in an Emergency Operations Center Communications Room, I continue to look forward to your success in maintaining t; /archives//html/TenTec/2017-02/msg00154.html (14,282 bytes)
26. Re: [TenTec] Blown Up Centurion (score: 1): Author: David Propper <k2dp@charter.net>; Date: Sat, 2 Sep 2017 11:49:10 -0500; Mike, Big Bang is typically the HV filter caps. Once you need to go in there, re-do the entire power supply, i.e.: diodes, filter caps, and THE BIAS TRANSISTOR ! I had the HV xfmr fail on me about 10; /archives//html/TenTec/2017-09/msg00006.html (9,652 bytes)
27. Re: [TenTec] centurion (score: 1): Author: David Propper <k2dp@charter.net>; Date: Fri, 6 Apr 2018 21:28:05 -0500; There could be several causes: 1) check the transformer tap settings for the proper 220 range voltage, 2) are you running the amp on 220 vAC ? 3) one or two power supply HV filter caps may be shorted; /archives//html/TenTec/2018-04/msg00044.html (8,404 bytes)
28. Re: [TenTec] OMNI VI plus (score: 1): Author: David Propper <k2dp@charter.net>; Date: Tue, 29 Sep 2020 20:03:38 -0500; Bob, Another suggestion, use liquid De-Oxit as your contact cleaner. It has a needle dropper dispenser. As someone else mentioned, avoid spraying contact cleaner if possible, however, the same cleane; /archives//html/TenTec/2020-09/msg00077.html (9,781 bytes)
29. [TenTec] Centurion Amplifier draws negative grid current-help requested (score: 1): Author: Daves <k2dp@charter.net>; Date: Fri, 12 Feb 2021 07:42:43 -0600; Hi all, My Centurion amp is drawing negative grid current and has no power output. I have checked the power transformer, diode string and filter caps and verified with an external VOM that I have 300; /archives//html/TenTec/2021-02/msg00031.html (7,241 bytes)

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