[Milsurplus] BA-1293 for GRC-9

[Richard Brunner]

Early GRC-9's had the battery hard-wired, and later ones use a plug-in 
battery.  It isn't elegant, but three N-cells wired in series, taped well, 
and wired through the chassis where the bias battery was works well and 
lasts for years.  There is plenty of room above the chassis.  N-cells are 
getting expensive, so there may be merit to watch-type batteries.

Richard, AA1P


>I did not immediately find online text describing how to use watch 
>batteries
> to replace the GRC-9  BA-1293/U bias battery. If the replacement batts fit
> into an emptied BA-1293, what are you using as filler, and as contacts?
>
> There was one NL seller of stray GRC-9 various, also selling 3 watch-type
> batts for this use, at $24, which I think is ridiculous.
>
> I would like to buy one or three dead BA-1293 where the battery case is
> not corroded thru.
>
> I recently saw a couple GRC-9 receivers in my stock, where a bias battery
> was kludged in, replacing the original BA-1293 clamp also. Did not look
> good.
>
> I am sending this to GRC-9, milsurplus, and Armyradios lists. If I learn
> something worthwhile, I will include these lists with the information.
>
> I disassembled a BA-1293/U from a set here, but the battery case was
> weakened, and a plug pin at the bottom broke off; I don't know if can
> make this one usable.
> tnx-
> Hue Miller