[Milsurplus] GRC-9 BT-1

[W2AGN]

On Tue, 25 May 2004, Mike Morrow wrote:

> John wrote:
>
> >Just trying to get an old GRC-9 operating. ... What I would like to ask
> >is what the best thing to use for the Receiver Bias Battery (BT-1). Can I
> >just hook up an AA cell, or was it some odd voltage?
>
> John,
>
> The receiver's BT-1 is nominally 4.5 vdc (positive to ground, of course), but the manual says 4 to 6 volts is OK.  You could substitute one of those little 6 v photo batteries like Canon used in the A-1 SLR.  There's virtually no current flow.
>
> The manual (TM 11-263) is pretty common and cheap at about $15.
>

Thanks much, I'll do just that. I got a Manual, but hadn't seen where it
referred to the voltage, just called it the "bias battery." Probably
didn't get there yet.

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