[GreenKeys] on-off radio teletype (not FSK)

[Jeffrey Angus]

On 2/16/18 7:45 PM, Jim Haynes wrote:
> After some experimenting the ham community settled on 170
> Hz as the standard narrow shift, and thus it has been ever since.
> (Except for AMTOR and its followers which chose 200 Hz because
> hat was the shift used by standard telephone modems.
Which was the same reason Kantronics and AEA both used 200 HZ
for RTTY.



-- 
"I am a river to my people."
Jeff-1.0
WA6FWI
www.foxsmercantile.com