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Re: Tracker not showing


Roger Barker <[email protected]
 

In article <000301be8024$e1756de0$6715883e@pentium166>, Chris McCarthy
<chris@...> writes
From: "Chris McCarthy" <chris@...>

I've been having some problems, trouble is there has been no one else around
to test it with!
A local has just appeared using APRS..I cant get an ack back from him when
sending a message, but that may be due to incompatibilities between the two
systems?
UI-View messages aren't compatible with APRS messages. There's a fairly
fundamental difference - the destination address for APRS messages is in
the message text, but UI-View uses the unproto address as the
destination. Also, the structure of the message is rather different.

The problem is, my tracker isn't appearing on the map. I can see the packets
appearing in the monitor screen at the bottom of the display.
Looking in the terminal window the format from my tracker is:
10:11:32R G3XVL-9>CQ,RELAY,WIDE <UI Len=68>:
$GPGGA,091644,5202.9506,N,00108.9689,E,1,08,1.3,83.2,M,47.0,M,,*74
I've just checked that and it looks like I've got a problem with
unexpected differences in the format of the $GPGGA sentence. :-(

Here's yours:-
$GPGGA,091644,5202.9506,N,00108.9689,E,1,08,1.3,83.2,M,47.0,M,,*74

And here's what comes out of the GPS 45XL I've been using for testing:-
$GPGGA,123748,5258.308,N,00002.774,W,1,06,1.6,1.4,M,47.1,M,,*5A

Yours has an extra decimal place on the lat and long.

UI-View will actually decode yours ok, but the preliminary "is it GPS?"
filter rejects it, so it never gets as far as being decoded. I've fixed
it now.

--
Roger Barker, G4IDE roger@...
Boston, UK

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