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Total 9 documents matching your query.

1. [Amps] Fwd: Ten-Tec Titan 425 - input SWR high (score: 1): Author: Prem <va3uma@gmail.com>; Date: Sun, 19 Oct 2014 09:37:31 -0400; Good morning gentlemen, and thanks to all for the quick and concise replies. - One of the tubes being bad: Will see if spares are available - LPF caps going bad: My plan was to analyze the cut-off fr; /archives//html/Amps/2014-10/msg00183.html (10,060 bytes)
2. [Amps] Fwd: Ten-Tec Titan 425 - input SWR high (score: 1): Author: Louis Parascondola via Amps <amps@contesting.com>; Date: Sun, 19 Oct 2014 10:15:41 -0400; Usually the input swr on those amps are OK. I have seen some that have issues on different bands. Since the age of the amp is getting up there I would say that maybe the mica caps have drifted off va; /archives//html/Amps/2014-10/msg00185.html (10,868 bytes)
3. Re: [Amps] Fwd: Ten-Tec Titan 425 - input SWR high (score: 1): Author: Gerald Williamson via Amps <amps@contesting.com>; Date: Sun, 19 Oct 2014 10:21:27 -0400; Prem, if a tube was bad the power output would be much lower than the 1500w you measured. The spectrum analyzer does not have enough drive power, same as the MFJ Analyzer, to test input vswr. The unc; /archives//html/Amps/2014-10/msg00186.html (10,916 bytes)
4. Re: [Amps] Fwd: Ten-Tec Titan 425 - input SWR high (score: 1): Author: Louis Parascondola via Amps <amps@contesting.com>; Date: Sun, 19 Oct 2014 10:31:12 -0400; It does not take a "bad tube", it only takes a tube that is low in emission to throw off the input match. Obviously the amp input is designed to be matched to tubes that are new. The amp has plenty o; /archives//html/Amps/2014-10/msg00187.html (12,239 bytes)
5. Re: [Amps] Fwd: Ten-Tec Titan 425 - input SWR high (score: 1): Author: Prem <va3uma@gmail.com>; Date: Sun, 19 Oct 2014 10:49:04 -0400; Thanks Louis. I'll try to get a good-known spare set of tubes. Note to Gerald: Roger that, sir. The SA test was only for the LPF alone - not in situ - just to find out the characteristics of all the; /archives//html/Amps/2014-10/msg00189.html (13,053 bytes)
6. Re: [Amps] Fwd: Ten-Tec Titan 425 - input SWR high (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sun, 19 Oct 2014 13:39:57 -0400; Pull one tube and stuff a rag in the hole. Go to 20M and drive with 20-30W and use the Tune and Load controls to peak the output at no more than 30ma Grid current. Write down the maximum power out. S; /archives//html/Amps/2014-10/msg00191.html (14,760 bytes)
7. Re: [Amps] Fwd: Ten-Tec Titan 425 - input SWR high (score: 1): Author: "Jim W7RY" <w7ry@centurytel.net>; Date: Sun, 19 Oct 2014 12:49:58 -0700; Most SWR indicators in modern solid state radios are very accurate. With a 20 degree index band switch, sometimes the input and output switches can get slightly out of sync. Try to change to the desi; /archives//html/Amps/2014-10/msg00194.html (13,063 bytes)
8. Re: [Amps] Fwd: Ten-Tec Titan 425 - input SWR high (score: 1): Author: Prem <va3uma@gmail.com>; Date: Sun, 19 Oct 2014 17:37:16 -0400; Thank you Carl (and all the others too). For a split second, I wondered why you wanted me to put some rag in the hole :-) It quickly occurred to me.... of course, to get the blower air through the wo; /archives//html/Amps/2014-10/msg00201.html (17,637 bytes)
9. Re: [Amps] Fwd: Ten-Tec Titan 425 - input SWR high (score: 1): Author: Prem <va3uma@gmail.com>; Date: Sun, 19 Oct 2014 17:51:19 -0400; Thank you Jim. Yes, that is one simple test I missed. After reading your mail, it does look like a possibility. Last night I had my friend turning the band-switch as I sprayed De-oxit to the wafer sw; /archives//html/Amps/2014-10/msg00202.html (14,028 bytes)

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