Re: Supersonic Heterodyne radio 1920's.
Strange readings on the rf amp valve on my beloved supersonic , there is only about two volts on the anode ,this is due to it being connected via the filter tx to the heater cct .
The valve is amplifying in fact there is loads of gain , I need to use an attenuate the input on strong stations. Has anyone come across the type of thing before. Mick.
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