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1. [Amps] Tetrode tuneup (score: 1): Author: "Bill Coleman N2BC" <n2bc@stny.rr.com>; Date: Mon, 14 Mar 2005 16:08:42 -0500; Adding a "tune" mode to an AM RF PA with a pair of 4-400s. What's better... floating the screens or grounding the screens. Does it matter? To round out the picture: no bias supply (grid leak bias onl; /archives//html/Amps/2005-03/msg00322.html (7,200 bytes)
2. Re: [Amps] Tetrode tuneup (score: 1): Author: TexasRF@aol.com; Date: Mon, 14 Mar 2005 16:20:37 EST; Hi Bill, if by "floating the screens" you mean no voltage applied and no path to the cathode, then this is not a good thing! The screen voltage will very quickly rise to the plate potential and with; /archives//html/Amps/2005-03/msg00323.html (7,576 bytes)

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