I think you're right. Voice sounded like APRS TT and it repeated a few times - I didn’t check it once a min or not 

On Tue, May 4, 2021 at 9:37 PM Robert Bruninga <bruninga@usna.edu> wrote:
I think the APRStt voice response is the 1 minute id.
The APRS repeat I dont remember wha itr means...Maybe I can look it up.
bob

On Tue, May 4, 2021 at 7:47 PM Brian Wilkins KO4AQF <bwilkins@gmail.com> wrote:
>
>
> Bob
>
> Tried it tonight with the D72A and sent DTMF on VFO B. A couple of times I heard “APRS TT” or “APRS Repeat” after transmitting. Might have been a coincidence. I looked at the page and didn’t see my call listed so assume it was for someone else
>
> On Tue, May 4, 2021 at 5:45 PM Robert Bruninga <bruninga@usna.edu> wrote:
>>
>> 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
>>
>> To encode your Grid/Callsign into a single DTMF memory, go to:
>> http://aprs.org/PSAT2Translator.html
>>
>> Bob, WB4APR
>>
>>
>>
>> On Sat, May 1, 2021 at 6:22 PM Robert Bruninga <bruninga@usna.edu> wrote:
>>>
>>> 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
>>
>>
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> --
> Brian Wilkins
> KO4AQF
--
Brian Wilkins
KO4AQF