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[aprssig] N7RIF contact info?

Stephen H. Smith wa8lmf2 at aol.com
Thu Mar 10 19:37:51 UTC 2011


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

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