[Milsurplus] GRC-9 bias cell?

mac w7qho at aol.com
Fri Aug 21 02:18:33 EDT 2009


Will actually work with a dead cell (zero bias).  A little distorted  
but never HiFi in any case.  Three cells taken out of a common 9 volt  
battery will just fit inside the old bias battery case.  Can't always  
be pried open non-destructively, though.  The predecessor radio, the  
BC-1306, picked up bias for the audio amp from the receiver HF  
oscillator circuit.  Might be  possible to do something like this in  
the -9 too but I haven't really looked into it.

Dennis D.  W7QHO
Glendale, CA

On Aug 20, 2009, at 8:41 PM, Hue Miller wrote:

> What are people doing to replace a missing bias cell?
> I suppose the easiest would be to solder to an AAA
> cell, with the wires to old tube pins or such.
> Or - make an adapter somehow, and maybe use
> AAAA batts, or??
> -Hue Miller
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