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1. Re: Topband: Modification of the INRAD Roofing Filter Kit (score: 1): Author: Dennis W0JX <w0jx@yahoo.com>; Date: Sun, 21 Oct 2007 07:32:35 -0700 (PDT); Paul: Regarding filter failures, I believe there have been a number of them out there. What happens over time is that the resonant center frequency changes over time and inserion loss increases. It i; /archives//html/Topband/2007-10/msg00110.html (7,875 bytes)
2. Re: Topband: Modification of the INRAD Roofing Filter Kit (score: 1): Author: Paul Baldock <pbaldock@verizon.net>; Date: Sun, 21 Oct 2007 16:48:39 -0700; You are right it does creep over time. What I finally noticed was not a change in gain, but a difference in frequency response between LSB and USB, most easily detected by listen to background noise; /archives//html/Topband/2007-10/msg00116.html (9,071 bytes)

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