A few things:

APRS.fi has been having a heard station bug for the past day or so. If you look 
at your mobile's raw, it did go directly into your igate. 7 times this morning. 
But It only showed up twice in the heard station info.

http://aprs.fi/info/VK2ABP-7
http://aprs.fi/info/VK2ABP-1

I live in a busy APRS area and don't digi when set up as an I-gate. When an 
I-Gate/digi is transmitting, it can't listen for packets to send to APRS-IS. 
Cutting down the efficiency of the I-gate. Your area might be OK doing both, 
especially since your setup as a courteous digi, only digipeating fresh 1st hop 
mobiles;-)

Set the fastest stable serial baud rate to uiview, 57600 should speed up your 
packets sent to APRS-IS. It's a race to APRS-IS, only the winner shows up. 
Losers run 4800 or 9600 baud.

Check to see if the EQ jumper is removed. data ports usually have unsqueched, 
non-deemphasized audio, so it should decode better with the EQ jumper pulled.

The biggest problem I hear almost daily is APRS users have their RX audio and 
TX audio hosed up. They setup a tracker or digi and don't pay attention to 
their levels. When they don't track well, they think increasing path will 
help...

These pages explain the most important part of APRS "layer-one":

http://www.febo.com/packet/layer-one/transmit.html 
http://www.febo.com/packet/layer-one/receive.html

 
Alan:-)




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