[GreenKeys] Two-Channel RTTY

[Tom Hunter]

I have been playing around with a calculator with two restrictions in mind
- 170 Hz shift per channel and Total bandwidth  of 850 Hz.

I would like to propose these audio frequencies;

Channel 1 - Space 2295 Hz
                 Mark   2125 Hz
                 Shift    170 Hz

Guard band 510 Hz

Channel 2 -  Space 1615 Hz
                  Mark   1445 Hz
                  Shift      170 Hz

Total bandwidth    -    850 Hz

Channel  1 -  is obvious  Standard TUs will work with it

Channel 2  -  a Dovetron should be tunable to 1445-1615 both send and
receive

The two channels could carry the same data or different data.


Tom   N3CRK
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