Malking a DTMF grid report is trivial from any dual band radio and requires no mode changes.
ONce you have loaded your grid and callsign into a DTMF memory, all you have to do is
change the VHF uplink to 145.980 and downoink on 145.825 and when the bird is in view,
TX the DTMF memory and listen for the VOICE response.
You should also hear the APRS packet response and display it if the downlink is set for APRS.
PSAT2 report that Grids have been captured from these stations:
2021-05-04 20:19:08PSAT2-1>APOFF,ARISS,qAS,P43L-5:
:BLNo-DTMF:r|KI6TSF,YD0NXX,N3CRT,PY5LF,N3CRT,F5VKV,KE4AZZ
The QSO counter is up to 53
PSAT2 appears to be operating normally after awakening on 26 April
from a 9 month sleep. All VHF and UHF functions are intact. The APRS
digi is off to encourage experimentation with other modes. Such as
DTMF Grids, PSK31, SSTV relay, HF voice SSB uplink, UHF FM down.
The latest Bulletin from PSAT2 on May 1 shows these callsigns have
used the DTMF Gridsquare report or sent a DTMF message. The goal of
this mode is to allow anyone with ANY radio to do a digital
communication without having to have a specialized APRS data mode.
ALl you need is a DTMF memory to store your callsign digits.
PSAT2-1>APOFF,ARISS,qAR,HK4D-6::BLNl-DTMF:
f|N3CRT,PY5LF,N3CRT,KE4AZZ,F5VKV,KE4AZZ,KE6BLR,2E0CRV
The latest QSO counter is 25.
Bob, WB4APR
http://aprs.org/PSAT2.html