[aprssig] APRS Email from Space! (ET Phone Home)

[Lynn W Deffenbaugh (Mr)]

Note: I wrote the PS (and the entire response) before catching up fully 
on my e-mail, so I can only state that "great minds think alike"...

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 7/1/2019 8:20 AM, Lynn W Deffenbaugh (Mr) wrote:
> On 6/30/2019 8:54 AM, Robert Bruninga wrote:
>> PSAT2 uses an un-numbered APRS message format to send me an EMAIL 
>> status once a day so that I can be aware of its status wherever I can 
>> receive email.  It depends on a working "EMAIL" engine to pull that 
>> status report from the APRS-IS and forward it to my email address.
>>
> Actually, according to this raw packet captured by aprs.fi, the 
> message packet IS requesting an acknowledgement:
>
>> 2019-06-28 20:47:35 EDT:*PSAT2-1 
>> <https://aprs.fi/?c=raw&limit=&call=PSAT2-1>*>APOFF,ARISS 
>> <http://aprs.fi/?c=raw&limit=&call=ARISS>,qAR,VK6HAM-2 
>> <http://aprs.fi/?c=raw&limit=&call=VK6HAM-2>::EMAIL    :sats at usna.edu PSAT2 reporting Home [004960,0I801]{019
>
> So, with this packet coming from space, a properly implemented EMAIL 
> server would in fact try to send an ack message back to PSAT2-1.  
> Hopefully none of the satellite IGates route messages from the -IS to 
> the satellite frequency RF!
>
> Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
>
> PS.  You could have accomplished an locally implemented status check 
> by simply writing an APRS-IS client that used a "b/PSAT2-1" filter and 
> captured/counted received packets.  Said client could then 
> (terrestrially) send you a summary e-mail to whatever detail level you 
> might like at whatever (changeable) interval you might want.  But 
> then, hindsight is always 20/20.
>
>
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