[aprssig] APRStt (APRS touchtone DTMF)

[Robert Bruninga]

> "Actually, APRStt was mostly designed for its 
> own frequency at an event or special purpose."
> 
> Could we put an APRStt decoder on the same 
> frequency as APRS? 

No, it needs a dedicated simplex freqency for that event or
community.  A packet would mess up the DTMF data and so it would
be very unreliable.  Also, the DTMF user is listening on the
APRStt frequency for the location of VIP assets and he does not
want to hear packet.

Bob, WB4aPR