[GreenKeys] RTTY (and SSB) in WW2

[Duncan Brown]

On 17-Oct-21 14:26, Nick England wrote:
> IIRC, one of the Army's RATT TU's will do the same thing, 
> simultaneously running 85Hz as well as 850 Hz shift.
> MD-522 used with the GRC-106 maybe?
> Nick
>

Yes that is a great, historical, article. I found it some time ago, and 
I'm using some information from in in my webinar on Wednesday.

The MD-522 AFSK unit had four modes:
     850 Hz shift
     85 Hz shift
     voice plus 85 Hz shift
     Diversity with two 85 Hz shift signal in the voice passband.

Have fun,

Duncan
K2OEQ