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[Amps] Dual GS35b input impedance

Subject: [Amps] Dual GS35b input impedance
From: Tomm Aldridge <KD7QAE@ARRL.NET>
Date: Sun, 13 Feb 2005 23:22:37 +0000
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I am now at the stage of designing my tuned input for the dual GS35b amp that is in process here. There seems to be a general concensus that the tube presents a 50 Ohm impedance when cathode driven in GG configuration. Can I assume a 25 Ohm input impedance as a good starting point for my input filter design?


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