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1. [Amps] GS35b es 4CX1000A INPUT (score: 1): Author: "Allan Greening" <vk3pa@vk3pa.com>; Date: Tue, 19 Oct 2010 19:08:22 -0800; Hi all 2 Q's. wot is the input impedance of a GS35b GNDED GRID, es also input impedance of a PAIR of 4CX1000 GRID DRIVEN I am putting tuned input into both amps..GS35b = 50 ohms? 2 x 4CX1000 =25 ohms; /archives//html/Amps/2010-10/msg00314.html (7,098 bytes)
2. Re: [Amps] GS35b es 4CX1000A INPUT (score: 1): Author: "Bill, W6WRT" <dezrat1242@yahoo.com>; Date: Tue, 19 Oct 2010 19:35:05 -0700; ORIGINAL MESSAGE: REPLY: The input impedance of a GS-35b is on the order of 50 ohms when run at 1500 watts or so, but the input impedance of a pair of grid driven tetrodes like a 4CX1000 is much high; /archives//html/Amps/2010-10/msg00315.html (8,387 bytes)
3. Re: [Amps] GS35b es 4CX1000A INPUT (score: 1): Author: TexasRF@aol.com; Date: Wed, 20 Oct 2010 08:34:33 EDT; Bill and others, The comment about passive grid and neutralization brings up a question: At VHF and UHF, running grounded grid, the need for neutralization is indicated when the plate current dip and; /archives//html/Amps/2010-10/msg00327.html (9,588 bytes)

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