- 1. [TenTec] 9420 power supply (score: 1)
- Author: "Tom Macon" <tmacon@wi.rr.com>
- Date: Sat, 1 Nov 2008 13:12:48 -0500
- I have a Hercules II amp with the 9420 power supply that's having problems. 1. When the amp is switched on, the Overload light comes on immediately. 2. When trying to run the tranceiver (Omni VI) fro
- /archives//html/TenTec/2008-11/msg00006.html (8,099 bytes)
- 2. [TenTec] 9420 Power Supply - Update (score: 1)
- Author: "Tom Macon" <tmacon@wi.rr.com>
- Date: Sat, 1 Nov 2008 22:44:18 -0500
- Thank you to all those who have responded - I certainly appreciate it. Here's some general comments in reponse to suggestions that I've received. I normally run the Omni on a 961 supply that I picked
- /archives//html/TenTec/2008-11/msg00012.html (8,334 bytes)
- 3. Re: [TenTec] possible power supply for Herc II? (score: 1)
- Author: "Tom Macon" <tmacon@wi.rr.com>
- Date: Wed, 5 Aug 2009 13:04:24 -0500
- At first look, it seems like this supply is a fairly good match but the devil may be in the details. The 9420 is made up of 4 - 25amp supplies while the AA978 contains 5 - 20 amp supplies. While both
- /archives//html/TenTec/2009-08/msg00038.html (9,819 bytes)
- 4. Re: [TenTec] band decoder for OmniVI? (score: 1)
- Author: "Tom Macon" <tmacon@wi.rr.com>
- Date: Tue, 2 Mar 2010 11:51:22 -0600
- Hi, Allan - W9XT/Unified Microsystems makes a simple band decoder. At first glance, it doesn't look like it will do exactly what you want, but the price is right - $18.95. With a little creativity, m
- /archives//html/TenTec/2010-03/msg00008.html (8,228 bytes)
- 5. Re: [TenTec] Yamaha CM-500 (score: 1)
- Author: "Tom Macon" <tmacon@wi.rr.com>
- Date: Sun, 21 Mar 2010 21:17:46 -0500
- I'm using a CM-500 since the first of this year and it works great on my Omni VI. I had a little trouble with RF feedback when taking the mic bias from my DVK, but switching it to use the mic bias fr
- /archives//html/TenTec/2010-03/msg00217.html (9,889 bytes)
- 6. Re: [TenTec] Contesting & Logging for Omni VI - TNXs agn N5NA (score: 1)
- Author: "Tom Macon" <tmacon@wi.rr.com>
- Date: Sun, 30 May 2010 16:20:12 -0500
- N1MM has support for the Omni VI and it works well for me. I can't speak for DX4WIN. I use N3FJP's AClog for general logging and that works fine with the Omni as well. FWIW, I made the serial cable f
- /archives//html/TenTec/2010-05/msg00521.html (9,876 bytes)
- 7. Re: [TenTec] swr (score: 1)
- Author: "Tom Macon" <tmacon@wi.rr.com>
- Date: Sun, 15 Aug 2010 21:58:59 -0500
- Lots of good suggestions, but don't overlook something simple. A while back I had similar symptoms on 75, and it turned out to be a loose PL259 on the lightning arrestor at the base of the tower. - T
- /archives//html/TenTec/2010-08/msg00203.html (9,595 bytes)
- 8. [TenTec] Herc II vs Astron (score: 1)
- Author: "Tom Macon" <tmacon@wi.rr.com>
- Date: Sun, 3 Mar 2013 11:19:06 -0600
- Hi, all - I have replaced the four supplies in the 9420 beast with four Astron SS-25's. At first all seemed well but then I experienced reduced power out from the 420 Herc. Upon investigation, it see
- /archives//html/TenTec/2013-03/msg00021.html (7,970 bytes)
- 9. Re: [TenTec] Herc II vs Astron (score: 1)
- Author: "Tom Macon" <tmacon@wi.rr.com>
- Date: Sun, 3 Mar 2013 16:10:34 -0600
- Looking at the 420 schematics, it seems the backfeed must come through the dump resistors. If one ps is on with the other 3 off, the backfeed voltage shows up on just one supply output - the other 2
- /archives//html/TenTec/2013-03/msg00032.html (11,480 bytes)
- 10. [TenTec] Herc II vs Astron - the final answer (score: 1)
- Author: "Tom Macon" <tmacon@wi.rr.com>
- Date: Fri, 8 Mar 2013 11:14:15 -0600
- It seems that the problem was caused by the overvoltage protection circuitry in the power supplies being triggered erroneously. Upon Astron's recommendation, I added a cap to the crowbar circuit on e
- /archives//html/TenTec/2013-03/msg00065.html (8,176 bytes)
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