[GreenKeys] FSK on WABC

[Richard Dillman]

>The military had contracted with WABC  770 KHz in NYC to operate FSK, very, 
>very narrow, in the 70's.  I was unable to find out much about it in those 
>days...it was imperceptible on the AM radio.

I read your post with great interest.  A friend was a studio engineer at WABC at the time and once told me how he happened to notice that the needle on the station's frequency monitor was bouncing all over the scale.  He was told "you don't need to worry about that" but later found out about the program you mention.  I was never able to find anything more about it so I was glad to see your post as confirmation that the program did indeed exist.

One assumes it was for submarine communications but I wonder if anyone has any further details.

Regards,

RD

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Richard Dillman, W6AWO
Chief Operator, Coast Station KSM
Maritime Radio Historical Society
http://www.radiomarine.org
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