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1. [Amps] Alpha 77 Filaments (score: 1): Author: "Harold B. Mandel" <ka1xo@juno.com>; Date: Fri, 4 Mar 2005 13:07:48 -0500; In order to "beef up" the 160 meter performance of the Alpha 77SX amplifier a number of changes occurred in the upper and lower RF decks that are pertinent to the thread. 1. The complete filament sup; /archives//html/Amps/2005-03/msg00059.html (8,208 bytes)
2. Re: [Amps] Alpha 77 Filaments (score: 1): Author: Vic Rosenthal <vic@rakefet.com>; Date: Fri, 04 Mar 2005 10:50:56 -0800; Why did isolating the heater improve performance on 160? Or was it done to protect the tubes against a particular failuere...if so, what was the reasoning? Not a challenge, just curious! -- 73, Vic,; /archives//html/Amps/2005-03/msg00065.html (7,021 bytes)

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