[aprssig] Curious about bogus packets on Findu
Robert Bruninga
bruninga at usna.edu
Thu Sep 30 18:16:14 EDT 2010
In these examples you cut off the data, so we cannot see what
kind of packet it is...
A Mic-E posit begins with either ` or '. A message begins with
:...
?
Bob
> --- On Thu, 9/30/10, Robert Bruninga wrote:
>
> > APK101 is the TOCALL version number for the radio.
> > You wont see it except when the radio is sending a message.
> > Otherwise, for positions, it is the latitude encoded.
> > Bob
>
>
> Thanks bob, but I have studied Mic-E a little bit - the
> latitude (TOCALL)field only.
>
> I'm pretty sure I didn't send any messages this trip and the
> bogus TOCALL packets I see on Findu are "beacon-like" in the
> rest of the packet.
>
> ARRRRRG! Points to the radio hickupping.
>
> I see what must be the two last bogus ones, around one bogus
TOCALL:
> 2010 09 29
23:57:41,K9DCI-9>TQ3V9T,WIDE1-1,WIDE2-1,qAR,W9EAA:...
> 2010 09 29
23:58:46,K9DCI-9>APK101,WIDE1-1,WIDE2-1,qAR,W9EAA:...
> 2010 09 29
23:59:49,K9DCI-9>TS2V3R,WIDE1-1,WIDE2-1,qAR,W9EAA:...
> 2010 09 30
00:00:57,K9DCI-9>TQ3V2Q,WIDE1-1,WIDE2-1,qAR,W9EAA:...
>
> These jump north about two degrees latitude and back.
>
> Here's another:
> 2010 09 30
00:12:42,K9DCI-9>TQ3U8S,WIDE1-1,WIDE2-1,qAR,W9EAA:...
> 2010 09
30:00:14:48,K9DCI-9>APK101,WIDE1-1,WIDE2-1,qAR,W9EAA:...
> 2010 09
30:00:15:50,K9DCI-9>TQ3U6W,WIDE1-1,WIDE2-1,qAR,W9EAA:...
> 2010 09
30:00:16:53,K9DCI-9>TP3U2Q,WIDE1-1,WIDE2-1,qAR,W9EAA:...
>
> This jumps about a degree south. Looks like around the time
> crossing ole' Mississippi. Ahhh, so the D700 is gray-line
> sensitive. (:-)
>
> Either W9EAA is munging packets or the D700 is. Since I
> didn't send messages, W9EAA wouldn't even know I was a D700
> (unless it's munging somebody elses packets with mine.
> Except I see that another two bogus TOCALLS are gated by
> WA9LT, but without an adjacent hyper-jump.
>
>
> Thinking back...
> On my previous trip to Denver area, I had a very tenacious
> "OPENING TNC" lockup...on every power up I had to clear it
> with some GPS command wrangling I found on the Yahoo group.
> I finally tried a reset of the TNC and it went away.
>
> Perhaps it's time for a reset-&-reload-fest. Hmmm...I never
> had to replace the battery either...
>
> Steve, K9DCI
>
>
>
>
>
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