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Total 18 documents matching your query.

1. [Amps] Henry 2002s for sale (score: 1): Author: k2cb@comcast.net; Date: Mon, 26 Jan 2015 16:55:43 +0000 (UTC); I have eight (8) Henry 2002 VHF amplifiers for sale. Used on 152MHz, but will tune right down to 144MHz with no issue. Three or four work fine, the others need some minor repairs. You can probably m; /archives//html/Amps/2015-01/msg00301.html (6,755 bytes)
2. [Amps] Clipperton L parasitic suppressor a (score: 1): Author: K2CB <k2cb@comcast.net>; Date: Sun, 8 Mar 2015 12:24:15 -0400; I am working on a Clipperton L. It seems to work fine on all bands. However, on 10m the parasitic suppressor resistors seem to be overheating. One or two of the four resistors looked like they've bee; /archives//html/Amps/2015-03/msg00024.html (7,336 bytes)
3. [Amps] Ten Tec Titan parts (score: 1): Author: K2CB <k2cb@comcast.net>; Date: Sat, 14 Nov 2015 01:24:59 -0500; Looking for a replacement for the right hand side multi function meter on the Titan amp. I am repairing the amp for a friend, and unfortunately the meter was fried during the failure, which also took; /archives//html/Amps/2015-11/msg00094.html (6,908 bytes)
4. [Amps] Alpha 77 troubleshooting (score: 1): Author: k2cb@comcast.net; Date: Tue, 19 Jan 2016 19:59:57 +0000 (UTC); Good Afternoon, I am working on an ETO Alpha PA-77. The original model, not a DX or SX. The previous owner had bypassed the warmup relay in an attempt to circumvent a failure of the warmup and/or; /archives//html/Amps/2016-01/msg00048.html (8,869 bytes)
5. [Amps] Eimac 4-125, GE GL-434A (score: 1): Author: k2cb@comcast.net; Date: Fri, 18 Mar 2016 16:41:26 +0000 (UTC); I came across a few tubes, still wrapped, so I am guessing they were never used. 2 Eimac 4-125 glass tubes 2 GE GL-434A metal tubes Anyone have any interest? Make an offer........ Eric K2C; /archives//html/Amps/2016-03/msg00035.html (6,888 bytes)
6. [Amps] TL-922 80m load issue (score: 1): Author: K2CB <k2cb@comcast.net>; Date: Wed, 14 Sep 2016 23:20:48 -0400; Helping a friend with a TL-922. On 80m, it is suffering from not enough loading capacitance. The peak at low drive levels is at 1. If driven to 1kw the peak it not attainable, as it appears to be pas; /archives//html/Amps/2016-09/msg00062.html (7,769 bytes)
7. Re: [Amps] TL-922 80m load issue (score: 1): Author: K2CB <k2cb@comcast.net>; Date: Sat, 17 Sep 2016 09:57:51 -0400; Thanks for the reply, Lou. The first thing I suspected was the padding capacitor for 80m, or the additional portion of the loading cap that is switched in on 80m. I checked all the capacitors, as wel; /archives//html/Amps/2016-09/msg00076.html (10,559 bytes)
8. [Amps] FS Henry 2002 vhf amps (score: 1): Author: K2CB <k2cb@comcast.net>; Date: Sat, 15 Oct 2016 09:59:34 -0400; I have eight (8) Henry 2002 VHF amplifiers for sale. They were used on 152MHz, but will easily tune right down to 144MHz with no issue. Three or four work fine, the others need some minor repairs. Yo; /archives//html/Amps/2016-10/msg00060.html (7,175 bytes)
9. Re: [Amps] Alpha fault 17 (score: 1): Author: K2CB <k2cb@comcast.net>; Date: Fri, 9 Dec 2016 00:53:30 -0500; Do a search of the 87A Yahoo group regarding the large L1 choke coil on the RF output wattmeter / pin diode / bypass relay module near the rear antenna jack. Don't quote me on the exact part designat; /archives//html/Amps/2016-12/msg00208.html (7,530 bytes)
10. Re: [Amps] Alpha fault 17 (score: 1): Author: k2cb@comcast.net; Date: Fri, 9 Dec 2016 18:00:38 +0000 (UTC); Good points, Dick. I seem to recall a similar thought when I first inspected the board. At first glance, I thought there was no issue there. Only once I removed the coil and scraped away the foam d; /archives//html/Amps/2016-12/msg00222.html (11,076 bytes)
11. Re: [Amps] Alpha fault 17 (score: 1): Author: k2cb@comcast.net; Date: Fri, 9 Dec 2016 20:53:50 +0000 (UTC); Glad to here it is the input meter circuit diodes rather than the choke; while a hassle to get input meter board out, it is much easier than removing the aforementioned RF output board. Worse case; /archives//html/Amps/2016-12/msg00230.html (13,919 bytes)
12. [Amps] FL-2100B input swr problem (score: 1): Author: Eric Dobrowansky <k2cb@comcast.net>; Date: Fri, 30 Jun 2017 01:55:45 -0400; I am working on an FL-2100B amplifier which is exhibiting high input SWR on all bands except 40m. I went ahead and replaced all of the capacitors on the tuned input circuit with new micas, including; /archives//html/Amps/2017-06/msg00297.html (7,304 bytes)
13. Re: [Amps] FL-2100B input swr problem (score: 1): Author: K2CB <k2cb@comcast.net>; Date: Fri, 30 Jun 2017 07:55:32 -0400; Yes and yes to the band switch being in sync. SWR thru amp when in standby is fine. The only thought I came up with overnight is that possibly the coax from the relay to the band switch may be compro; /archives//html/Amps/2017-06/msg00301.html (10,895 bytes)
14. Re: [Amps] FL-2100B input swr problem (score: 1): Author: K2CB <k2cb@comcast.net>; Date: Fri, 30 Jun 2017 07:57:43 -0400; When the amplifier is in standby, the SWR at the exciter in bypass mode is fine. So the only thing that leaves is the piece of coax between the relay and the input portion of the band switch. I plan; /archives//html/Amps/2017-06/msg00302.html (10,751 bytes)
15. Re: [Amps] FL-2100B input swr problem (score: 1): Author: K2CB <k2cb@comcast.net>; Date: Fri, 30 Jun 2017 23:33:56 -0400; Good news. I found the causes of the tuned input issues. One, I misinterpreted the indexing of the input band switch wafer for the tuned input coils. I had the switch's input and output sides reverse; /archives//html/Amps/2017-06/msg00305.html (14,826 bytes)
16. [Amps] Acom 2000A controller issue (score: 1): Author: Eric Dobrowansky <k2cb@comcast.net>; Date: Sun, 5 Dec 2021 20:19:43 -0500 (EST); I am working on an Acom 2000A with the newer controller (color display). The amp worked fine the last time it was turned on a few months ago. Now, when the main power switch is turned on, the control; /archives//html/Amps/2021-12/msg00049.html (8,180 bytes)
17. [Amps] Alpha 87A - strange power related issue (score: 1): Author: Eric Dobrowansky <k2cb@comcast.net>; Date: Sun, 9 Oct 2022 20:26:27 -0400 (EDT); It's been a long time, and I'm not sure if there is a dedicated Alpha 87A related mail list in existence any longer, so I will go ahead and ask here. I have an 87A that started exhibiting a strange p; /archives//html/Amps/2022-10/msg00016.html (8,168 bytes)
18. Re: [Amps] Alpha 87A - strange power related issue (score: 1): Author: Eric Dobrowansky <k2cb@comcast.net>; Date: Tue, 11 Oct 2022 23:34:07 -0400 (EDT); I did some further troubleshooting last evening. After ruling out the power switches and the adhesive under the 1000uf cap on the ac input board, I determined the return path of the relay was not bei; /archives//html/Amps/2022-10/msg00020.html (8,207 bytes)

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