And the ball keeps bouncing. Congrats! Reminds me of a conversation I had with Martin Sweeting at an AMSAT meeting in DC about 45+ years ago. I was showing him a new hi-tech (!) 4 function hand calculator that my college had just purchased ($ 500.+) for use by blind students and suggesting that the new voice synthesizer chip might be placed on a satellite and used for downlink telemetry. It would of course reduce the data rate from about 3 characters per second (Morse code) to 1 character per second but would greatly expand access to potential users. Those were the days. Again, Congrats. Martin Davidoff (K2ubc)
On Fri, May 28, 2021 at 3:23 AM Yono Adisoemarta via AMSAT-BB < amsat-bb@amsat.org> wrote:
Hi Bob,
Works really good over here several minutes ago, 07:05 UTC pass over Jakarta, Indonesia.
Thanks for the great job, 73 de Yono - YD0NXX
Sent from my iPhone
On May 28, 2021, at 12:05 PM, Robert Bruninga bruninga@usna.edu wrote:
A new feature has been enabled for the Voice Synthesizer on PSAT2 in addition to DTMF grid and DTMF messaging to voice. Now the voice synthesizer is also listening for APRS-to-Voice messages as well. Here is how to use it
- Remain on the 145.980 uplink and 145.825 downlink for DTMF
- Using an APRS radio, send an APRS message to PSAT-SAY
- Begin the first 10 chars of the message with CCCCCC sez
- Followed by the text to be spoken.
- 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.
See http://aprs.org/psat2.html Tomorrow I will add this feature to the users manual and post it.
Enjoy, Bob, WB4APR
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