[Amps] Dual GS35b input impedance

Alek Petkovic vk6apk at eon.net.au
Sun Feb 13 18:28:27 EST 2005


What are you using for sockets Tomm?

73, Alek.
VK6APK

At 07:22 AM 14/02/2005, Tomm Aldridge wrote:
>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?
>
>Regards
>
>KD7QAE
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