[aprssig] FW: reading aprs path question

[Robert Bruninga]

> What is the alphanumeric code that appears 
> in the beginning of many APRS packets/paths?
>                   vvvvvv
> Raw packet: K6JLW>APT310,WIDE2-2,qAR,K6TZ...

That is the APRS version field.  All APRS packets are sent to an
APxxxx address.  The xxxx field lets authors identify the
version number of their softare or hardware.  See the
TOCALLS.TXT file in the APRS1.1 addendum:

http://www.ew.usna.edu/~bruninga/aprs/aprs11.html

Bob, WB4APR