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[aprssig] Curious about bogus packets on Findu

Stephen H. Smith wa8lmf2 at aol.com
Thu Sep 30 22:54:50 UTC 2010


  On 9/30/2010 3:13 PM, Robert Bruninga wrote:
> I think I might disagree with your conclusion.
>
>> Another 700 bug (is there any end to them????)
>> I have observed... hyper-jumps in switching
>> to standalone "APRS" operation after several
>> hours(and hundreds of miles) of operation in
>> "PACKET" mode with a computer.
>> Apparently the D700 caches the last GPS value
>> transmitted during standalone operation.  When
>> you exit the computer/Packet mode, the first
>> beacon in APRS mode will the location where
>> APRS mode was previously stopped; i.e. hundreds of
>> miles behind you!
> I don't think that is a bug...  It is simply Life.  The radio
> can only remember what it knows.  When it is in packet mode, it
> is simply passing data of which it has no involvement.  When in
> APRS mode, it remembers its last position.  This is what one
> would expect.
>
> Or am I missing something...

YES.  On startup it should first attempt to read from a live GPS on the GPS 
port, for a current position, instead of regurgitating a cached one that could 
be hours or days old.    What's weird about this bug is that the GPS indicator 
is flashing, indicating that the radio has detected a live GPS, even as it is 
sending obsolete, cached data.


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--

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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