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Re: [Amps] GS23B Plate load resistance for HF

To: TexasRF@aol.com, keepwalking188@yahoo.com, dezrat1242@yahoo.com, amps@contesting.com
Subject: Re: [Amps] GS23B Plate load resistance for HF
From: peter chadwick <g8on@fsmail.net>
Reply-to: g8on@fsmail.net
Date: Thu, 31 Oct 2013 18:54:18 +0100
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Assuming 3kV on the plate, 500 volts on the screen and AB1 operation in 
grounded cathode, I calculate a PEP output of 1540 watts, a dissipation of 1240 
watts, efficiency 55% and a load resistance of 1570 ohms - calculation method 
as per RCA.  
Peak plate voltage when loaded is 3700 volts.

The 4CX1000A has a much bigger allowable plate swing  before the plate current 
curve starts to bend - which helps the efficiency.


73

Peter G3RZP
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