[GreenKeys] MD-522/GRC modem

[tony.podrasky]

Back in New York, in the '70's I worked at a company
that built MD-522/GRCs. After carrying around the manuals
with all the trouble shooting stuff - for 30 years, I
finally threw them out.

They stacked 3 high as I recall: the MODEM, the TRANSCEIVER, and
the MATCHBOX or something or other.

UE,
K2EAA - TONY
NNNN
ZCZC


On 06/17/2020 12:48 PM, Steve wrote:
> *Subject:* MD-522/GRC modem
>
> Have just gotten my GRC-106A on the air and am wondering if the
> companion MD-522
> is worth looking for. From the manual, it is capable of 850 Hz and 85 Hz
> shift.
> Transmit and receive. How difficult would it be to change the 85 Hz
> shift to 170 Hz which would make it far more useful?
> Any info or tips appreciated!
> Steve W6SSP
>
>
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