[GreenKeys] FRF FSK conv. (was - Two eBay Novelties)

[David Burns]

The specifications at "jptronics" specifically mention "dual-channel" 
operation.  Knobs on the front of the equipment are labeled "Channel A" 
and "Channel B".  The date on the jptronics specification is 1952.  
Obviously, the 'cold-war' is underway.  The Russians had dual channel 
equipment in widespread use starting in the 50's (I dragged NSA 
equipment designed to intercept it out of the NSA's dump at Ft. Meade in 
the late 60's).  The FRF would have been equivalent to the Russian 
equipment.

I've been in communication with the seller.  They have multiple "pallets 
of surplus gov. equipment" dating from the 1940's "in the back of the 
warehouse".  Could be anything, as they've been in business for 72 years.

More to come..

-Dave in Boston