[OZAPRS] Can anyone explain this please

[Geoff]

Which part in particular ???

I'll break it down a little - what you are seeing is the data from the
APRS-IS (Internet) as seen at aprs.fi, so there are a few additional fields
that you don't see on RF.

2008-07-19 06:15:40 UTC: VK2JNG-9>SSR1W7,VK2RAG-1*,WIDE2-1,qAR,VK2ZEN-5:'m8
l j/]"4!}146.775MHzKenwood TM-D710= [Location changes too fast (>500 km/h)]
 2008-07-19 06:15:40 UTC:
VK2JNG-9>SSR1W7,VK2RAG-1*,WIDE2-1,qAR,VK2XJG-5:'m8l
j/]"4!}146.775MHzKenwood TM-D710= [Rate limited (< 5 sec)]

These two frames are the same packet - one was received through VK2ZEN-5
IGate via VK2RAG-1 digi, and the other was received via VK2XJG-5 IGate via
VK2RAG-1.  (The second should not have popped up as my IGate should be
OFFLINE - I'll need to check that).   The qAR part is a header used only on
the Internet stream.

I believe the "Rate limited" message is a function of aprs.fi, as it has
received exactly the same message from you within 5 seconds and applied a
throttling to your message.  The "Location changes too fast" I can't
explain.  It could be that your GPS is providing invalid data or your packet
is corrupted somehow giving an apparent shift in location that is
unrealistic - or your car is something that the Stig should take around the
track on Top Gear :-)

Regards,
Geoff  VK2XJG


-----Original Message-----
From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
Behalf Of JandG
Sent: Saturday, July 19, 2008 8:30 PM
To: Australian APRS Users
Subject: [OZAPRS] Can anyone explain this please

Found this on APRS.fi after a trip to the Central Coast.

Would appreciate an explanation if possible.

2008-07-19 06:15:40 UTC: VK2JNG-9>SSR1W7,VK2RAG-1*,WIDE2-1,qAR,VK2ZEN-5:'m8
l j/]"4!}146.775MHzKenwood TM-D710= [Location changes too fast (>500 km/h)]
 2008-07-19 06:15:40 UTC:
VK2JNG-9>SSR1W7,VK2RAG-1*,WIDE2-1,qAR,VK2XJG-5:'m8l
j/]"4!}146.775MHzKenwood TM-D710= [Rate limited (< 5 sec)]
 2008-07-19 06:19:11 UTC:
VK2JNG-9>SSR1W7,VK2RAG-1*,WIDE2-1,qAR,VK2XJG-5:`O8l#Hj/]"4'}146.775MHzKenwo
od TM-D710= [Location changes too fast (>500 km/h)]
 2008-07-19 06:19:13 UTC: VK2JNG-9>SSR1W7,VK2RTZ-1*,WIDE2-1,qAR,VK2ZEN-5:`O8
l#Hj/]"4'}146.775MHzKenwood TM-D710= 
 2008-07-19 06:21:25 UTC: VK2JNG-9>SSR1W7,VK2RAG-1*,WIDE2-1,qAR,VK2ZEN-5:`O8
l#1j/]"4'}146.775MHzKenwood TM-D710= 
 2008-07-19 06:21:25 UTC:
VK2JNG-9>SSR1W7,VK2RAG-1*,WIDE2-1,qAR,VK2XJG-5:`O8l#1j/]"4'}146.775MHzKenwo
od TM-D710= [Rate limited (< 5 sec)]
 


Thanks,

Gerard
VK2JNG
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