Here is how to use it
1) Remain on the 145.980 uplink and 145.825 downlink for DTMF
2) Using an APRS radio, send an APRS message to PSAT-SAY
3) Begin the first 10 chars of the message with CCCCCC sez
4) Followed by the text to be spoken.
5) CCCCCC is your callsign right-padded with spaces.
The satellite should ACK the packet uplink and then speak the text.
You can tell if APRS-to-Voice is enabled if this 1 bit is on: XXXX0010.
Usually the DTMF bits are also enabled so the telemetry will usually
show as 11010010.
To do both DTMF and APRS-to-Voice at the same time, the Basic Stamp
processor has to check both the DTMF decoder and the packet decoder
and so there is a finite chance that a perfectly good uplink might be missed
So, just try again.
Tomorrow I will add this feature to the users manual and post it.
Enjoy, Bob, WB4APR