[aprssig] APRStt (touchtone) lives

Robert Bruninga bruninga at usna.edu
Mon Apr 8 12:41:52 EDT 2019

You're thinking of PCSAT-2 that flew on ISS in 2006 time frame.  PSAT2 is
the followon to PSAT which has been in space since 2015 but only with a 300
mW transmitter.  PSAT2 will have a 6 dB stronger signal and lots more modes.


-----Original Message-----
From: ka8vit at ka8vit.com <ka8vit at ka8vit.com>
Sent: Monday, April 8, 2019 12:10 PM
To: Robert Bruninga <bruninga at usna.edu>; aprssig at lists.tapr.org
Subject: Re: [aprssig] APRStt (touchtone) lives

Is this an old message, Bob ?

PSAT2 was lunched a long time ago.

Or, is there a new marathon you're thinking of using this for ?

73 - Bill KA8VIT

> On April 8, 2019 at 11:46 AM Robert Bruninga <bruninga at usna.edu> wrote:
> With the coming launch of PSAT2 containing APRStt (DTMF) uplinks and
> Voice response downlinks, I hope to re-invigorate the use of DTMF
> radios for use in field events. To get closer to 100% data reporting
> from volunteers than just the 20% who have APRS radios. See:
> http://aprs.org/aprstt.html
> Anyone with a DTMF radio can send data into APRS using APRStt.
> See http://aprs.org/PSAT2/USER-Operations-Manual.doc
> Although the satellite focuses entirely on GRIDS and DTMF messaging
> using the ARRL radiograms, I want to start to build message templates
> for local events (where DTMF reporting can be most valuable).
> We need a MARATHON template. To build this I need to have inputs on
> ALL the possible messages that field units report during a marathon.
> Please add to, or correct this list. Remember, each message will be
> associated with a callsign or location ID. And once received on the
> DTMF channel will be spoken back to the sending station and will be
> converted to APRS over on the APRS data channel.
> Remember, it will only take 2 to 4 keypresses on DTMF to send any of
> these
> reports:
> 1. Runner XX just passed
> 2. Female XX just passed
> 3. Handicapped XX just passed
> 4. EMS is on scene
> 5. Need more water
> 6. Need checkpoint captain
> 7. Runner XX is down
> 8. Need EMS
> 9. Am at checkpoint XX
> 10. ....?
> Here is one we use all the time to completely replace voice at our
> Scout Jamborees for reporting troop scores at each station:
> 1. Troop number XX scored YY at this location (only takes 4 key
> presses
> So, anyway we can have up to 99 such pre-formatted DTMF messages... I
> need input.
> Bob, Wb4APR

Bill Chaikin, KA8VIT
USS COD Amateur Radio Club - W8COD
WW2 Submarine USS COD SS-224 (NECO)

ka8vit at ka8vit.com

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