[GreenKeys] REAL RTTY

[Jim Haynes]

On Mon, 22 Jun 2009, Jeffrey Angus wrote:

> That and AEA (much like Microsoft) set their own standard of 200 Hz
> shift because that's what the Bell Modem chip handles.
>
> Jeff-1.0
> wa6fwi
Yeah, the HF packet people made the unfortunate choice of the Bell modem
with 200 Hz shift, but then so did the AMTOR and Pactor people.  I've seen
mods for the AEA PK-232 to change the shift to 170 Hz, which of course
means it turns it into an RTTY-only modem.  But then 300 baud HF packet
never was good for much.