[GreenKeys] BC-610

[Ron Boltz]

The BC-610 was used in the GRC-26 series of RTTY shelters right up to the
early 70's.  The oscillator used for FSK was the O-39(*)/TRA-7 and did a
shift of 850 Hz when connected to the 610.  These were once quite common on
the surplus market but I have not seen any for many years.

 

Ron Boltz

 

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