[GreenKeys] Very Slow Shift Frequency keying?

[Nick England]

>From Jim Haynes 1/23/20 posting on greenkeys a couple of years ago….
———
The shift was +/- 18 Hz to stay within the FCC requirements that the
carrier frequency be within +/- 20 Hz of the assigned frequency.  The
baud rate was 75 and the demodulator was said to be one designed for
85HZ shift.

Earl E. Selover, David A. Griffith, John R. Martin, and Donald Spector
Use of Commercial Broadcast Stations for Emergency DOD Communica-
tions. IEEE Transactions on Communication Technology COM-15:4, Au-
gust 1967, p. 579.
—————

On Wed, Apr 19, 2023 at 7:23 PM steve bennett via GreenKeys <
greenkeys at mailman.qth.net> wrote:

> Ever heard of this?
>
>
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-- 
Nick England K4NYW
www.navy-radio.com
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