[OZAPRS] UI-View32 position reports "unsupported packet format"

Ron Perry ronk at ncable.com.au
Sat Apr 11 00:41:12 EST 2009


Richard,
Just how far South of the Equator, and how far East of the Greenwich do
you live?



On Fri, 2009-04-10 at 21:46 +1000, Richard Murnane wrote:
> Hi all,
> 
> Looking at the Google APRS website (aprs.fi), I noticed that my home  
> was not being shown on the map. Actually, it hasn't been shown since  
> November last year. Looking at the raw packets page, I saw that my  
> position reports are apparently in an "unsupported packet format".
> 
> As you can see below, the initial UI-View beacon is recognised, but  
> not the position report that follows:
> 
>   2009-04-10 20:15:04 EST:  
> VK2SKY>GPSMV,VK2RAG-1*,WIDE2-1,qAR,VK2ZEN-5:>100742zUI-View32 V2.03
>   2009-04-10 20:15:08 EST:  
> VK2SKY>GPSMV,VK2RAG-1,VK2RTZ-1,WIDE2*,qAR,VK2ZEN-5: =3341.07S/ 
> 15106.01E-Email: vk2sky at wia.org.au {UIV32N} [Unsupported packet format]
> 
> Now, the only change I can recall making in recent months is changing  
> my UI path from APRS,WIDE1-1,WIDE2-1 to GPSMV,WIDE1-1,WIDE2-1. So,  
> that was the first thing I changed back, and UI-View replaces it with  
> its software "ID", as before. I also disabled the UI-View tag  
> ({UIV32N}), but still no luck:
> 
>   2009-04-10 20:17:27 EST:  
> VK2SKY>APU25N,VK2RAG-1*,WIDE2-1,qAR,VK2ZEN-5: =3341.07S/15106.01E- 
> Email: vk2sky at wia.org.au [Unsupported packet format]
> 
> Next, I dug out the APRS spec (v 1.0) and checked whether anything in  
> the comment field might be getting interpreted as a badly-formed  
> telemetry or other data, so I removed any special characters from the  
> comment field:
> 
> 2009-04-10 20:58:03 EST:  
> VK2SKY>GPSMV,VK2RAG-1,VK2RGL-1,WIDE2*,qAR,VK2ZEN-5: =3341.07S/ 
> 15106.01E-Email vk2sky at wia.org.au {UIV32N} [Unsupported packet  
> format]
> 
> No luck there either, so I removed the comment text altogether:
> 
>   2009-04-10 21:00:49 EST:  
> VK2SKY>GPSMV,VK2RAG-1*,WIDE2-1,qAR,VK2ZEN-5: =3341.07S/15106.01E-  
> [Unsupported packet format]
>   2009-04-10 21:12:00 EST:  
> VK2SKY>APU25N,VK2RTZ-1,VK2RGL-1,WIDE2*,qAR,VK2ZEN-5: =3341.07S/ 
> 15106.01E- [Unsupported packet format]
> 
> Alas, no joy, with either variant of the UI path.
> 
> So, the path is OK (otherwise the software ID beacons would be  
> rejected too), and the comment field (being empty) is not the problem.
> 
> As far as I know, nothing in the APRS 1.1 spec comes into play here,  
> and my home station doesn't appear on other aprs sites, so it's not a  
> problem at aprs.fi.
> 
> All that's left is the co-ordinate information, and UI-View controls  
> how that is formatted.
> 
> Does anyone with a fresh set of eyes see what's going wrong?
> 
> Thanks & 73 Richard VK2SKY
> 
> _______________________________________________
> Ozaprs mailing list
> Ozaprs at aprs.net.au
> http://aprs.net.au/mailman/listinfo/ozaprs

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