[R-390] The BFO pitch counter dial?

[Grayson Evans]

I picked up another R390A at the junk yard.   Not too bad a shape, insides look very good.   It is a Motorola unit with what looks like a brand new Cosmos PTO.
This unit has a multi-turn counter dial on the BFO pitch.  I thought it was a mod the last owner installed, but it seems to me, I read something about this mod somewhere, but can’t remember where or what it was.   It was built for some government agency?
I can’t think why anyone would want this mod to tune the pitch.  Anyone have a clue on this?
THANKS again!
73

Grayson
TA2ZGE - Ankara, Turkey
KJ7UM
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