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[aprssig] N7RIF contact info?

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Thu Mar 10 21:20:58 UTC 2011


I'm familiar with the dual-meaning of Mic-E.  What I'm tracking down is 
the apparent telemetry (`XXXX) that is appearing in those packets.  I 
see the teletry defined at 
http://www.tapr.org/kits_mic-e.html#message_format just as promulgated 
in aprs101.pdf.

I pulled the mic-e.manual.pdf file from that site and I now see on page 
18 that it DOES in fact support telemetry!  And that telemetry is 
inserted before any status text in the packet.  This is exactly what I 
needed to know!  (Oh, and apparently N7RIF-9 is configured to transmit 
just 2 values, the first of which is a measure of the input voltage).

Thank you for the pointers to home in on the final answer.

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

On 3/10/2011 2:37 PM, Stephen H. Smith wrote:
> On 3/10/2011 11:08 AM, Lynn W. Deffenbaugh (Mr) wrote:
>> Greetings,
>>
>>
>> PS.  I'm particularly interested in the following particular 
>> packets.  I know what they MEAN, I'm just wonder what's creating them 
>> (especially the ones with the hex telemetry values).
>>
>> 2011-03-07 16:52:11 UTC: 
>> N7RIF-9>T7RUYT,SOMTN,WIDE1*,WIDE2-1,qAS,WW7CH:`2A&l!e>/`7F00>In service
>> 2011-03-07 18:36:18 UTC: 
>> N7RIF-9>T7SQYX,N7GME,W7PFR-1,WIDE2*,qAS,WW7CH:`2Aal!E>/>In service
>> 2011-03-07 19:06:18 UTC: 
>> N7RIF-9>T7SQYX,N7GME,W7PFR-1,WIDE2*,qAS,WW7CH:`2Aal!E>/`7A00>In 
>> service [Duplicate position packet]
>> 2011-03-08 17:17:52 UTC: 
>> N7RIF-9>T7RUYT,WW7RA*,WIDE2-1,qAR,AC7YY-12:`2A%l"3>/`7A00>In service
>> 2011-03-08 17:57:53 UTC: 
>> N7RIF-9>T7SQPS,N7GME,W7PFR-1,WIDE2*,qAS,WW7CH:`2 at Vo4<0x1d>>/`9300>In 
>> service
>> 2011-03-09 17:57:49 UTC: 
>> N7RIF-9>T7RYVX,WW7RA*,WIDE2-1,qAS,KB7UVC:`2@<o_W>/>In service
>> 2011-03-09 18:07:49 UTC: 
>> N7RIF-9>T7SRPS,SOMTN,WIDE1*,WIDE2-1,qAS,WW7CH-11:`2?gn v>/`9700>In 
>> service
>> 2011-03-09 18:27:49 UTC: 
>> N7RIF-9>T7RUYT,WW7RA*,WIDE2-1,qAR,SEDRO:`2A%l!b>/`7D00>In service
>> 2011-03-09 18:29:46 UTC: 
>> N7RIF-9>T7RUYT,WW7RA,CNTRLA,WIDE2*,qAR,AC7YY-12:`2A%l!b>/`7D00>In 
>> service
>> 2011-03-09 18:37:49 UTC: 
>> N7RIF-9>T7SPPP,WW7RA*,WIDE2-1,qAS,KB7UVC:`2B[p#K>/>In service
>> 2011-03-09 18:47:49 UTC: 
>> N7RIF-9>T7SQRW,WW7RA*,WIDE2-1,qAS,KB7UVC:`2Atl!$>/`7E00>In service
>
> They are from the original TAPR Mic-E encoder device -- the 
> decades-distant forerunner of the TinyTrak, etc.
>
> Like a TinyTrack, it was a transmit-only device. It was intended to be 
> inserted in series between a mic and the radio's mic jack -- hence the 
> name "Mic Encoder". .   Unlike the TinyTrack, you could select one of 
> 16 canned messages in the field, with a 16-position rotary switch (the 
> same canned messages that show up in Kenwood APRS menus, or on the 
> TinyTrak config menu) --AND-- you could select several canned paths 
> from a similar rotary switch.   Details on this now-discontinued 
> historic device here:
>
> <http://www.tapr.org/kits_mic-e.html>
>
>
> Note that "Mic-E" actually has at least 3 meanings:
>
> o    The highly-compressed position data format that puts part of the 
> posit data in the destination field.
>
> o    The original TAPR hardware device that produced this kind of packet.
>
> o    The technique of   APRS-packet-burst-on-unkey    on a voice 
> channel.  [The Mic-E data format was invented to make the shortest 
> possible burst in this APRS-after-voice mode.]   Today, the TinyTrack 
> and all the Kenwood APRS radios support this mode of burst-on-unkey.
> ------------------------------------------------------------------------------- 
>
>
> -- 
>
> Stephen H. Smith    wa8lmf (at) aol.com
> EchoLink Node:      WA8LMF  or 14400    [Think bottom of the 2M band]
> Skype:        WA8LMF
> Home Page:          http://wa8lmf.net
>
> =====  Vista & Win7 Install Issues for UI-View and Precision Mapping 
> =====
>     http://wa8lmf.net/aprs/UIview_Notes.htm#VistaWin7
>
> *** HF APRS over PSK63 ***
>    http://wa8lmf.net/APRS_PSK63/index.htm
>
> "APRS 101"  Explanation of APRS Path Selection & Digipeating
>   http://wa8lmf.net/DigiPaths
>
>
>
>
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