[GreenKeys] 10cps shift
George B. Hutchison
W7TTY at olypen.com
Tue Dec 1 12:07:01 EST 2009
GreenKeyers & Nick - - -
The Defense Department at one time had an arrangement with a group of
broadcast stations around the country where those affiliated stations
were carrying clear text traffic by shifting their carriers ten
cycles at a data rate of 60 WPM.
A few that I know of were WABC in New York, KFI in Los Angeles, and
KNBR in San Francisco.
KNBR keying was controlled out of Hamilton Field AFB, North of San
Fran.
The equipment and technology was produced by Barry Research.
Rich McClung, WA6KNW, San Jose, Calif,. now works for TCI/BR, who
absorbed Barry Research, the "/BR" denoting this. I think Rich does
have some manuals on the equipment.
There was a thread about this on GreenKeys some years back, and you
might want to rummage through the site's archives to see all that was
mentioned on this topic.
George - W7TTY
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