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Total 5 documents matching your query.

1. [Amps] tuner anomalies (score: 1): Author: Dan Sawyer <dansawyer@earthlink.net>; Date: Tue, 30 Oct 2007 16:00:42 -0700; The topic is a Murch Transmatch 2000. It is in 'better' condition with no signs of internal arcing, etc. The background: I am tuning a long wire, about 100 feet long. I tune with either a 0 dbm gener; /archives//html/Amps/2007-10/msg00278.html (7,754 bytes)
2. Re: [Amps] tuner anomalies (score: 1): Author: Vic K2VCO <vic@rakefet.com>; Date: Tue, 30 Oct 2007 16:16:24 -0700; One possibility is that a large amount of RF on the 'grounded' side of the tuner is upsetting the SWR measurement. You say it worked before -- have there been changes in the path from the tuner to gr; /archives//html/Amps/2007-10/msg00279.html (7,591 bytes)
3. Re: [Amps] tuner anomalies (score: 1): Author: Dan Sawyer <dansawyer@earthlink.net>; Date: Tue, 30 Oct 2007 16:32:28 -0700; Vic, Thanks for the comments. Last one first, the signal is clean, pick up in a spectrum analyzer shows the spurs are well below 40 db down. Is there an rf conducting grease that should be used on th; /archives//html/Amps/2007-10/msg00280.html (7,874 bytes)
4. Re: [Amps] tuner anomalies (score: 1): Author: Vic K2VCO <vic@rakefet.com>; Date: Tue, 30 Oct 2007 17:35:38 -0700; If the chassis of the tuner is hot with RF, there can be a power-dependent error in SWR measurements. I wouldn't expect a 'jump', though, this would be a smooth increase. Also, depending on the diode; /archives//html/Amps/2007-10/msg00281.html (7,830 bytes)
5. Re: [Amps] tuner anomalies (score: 1): Author: Ian White GM3SEK <gm3sek@ifwtech.co.uk>; Date: Wed, 31 Oct 2007 09:13:30 +0000; A very strong possibility is that a coax shield connection has opened up somewhere, so you suddenly have RF currents crawling all over your system. Quite likely the tuner is only showing the symptoms; /archives//html/Amps/2007-10/msg00283.html (8,935 bytes)

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