[AMRadio] Bias Battery

Jim Wilhite w5jo at brightok.net
Sat Nov 7 20:31:19 EST 2009

A long time ago I remember someone or several someones talking abut the 
modulator tubes bias battery in the AF 67/68.  It is a 22.5 volt battery 
that I am going to need.  I don't recall if the discussion turned into 
how to get the needed voltage from something in the radio or the battery 
is still available.

Can someone enlighten me on the subject?  If the battery is available, 
where?  If a modification was performed, how, and where can I get a 
copy?  Or are both solutions plausible?

TNX & 73


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