[Xastir] Xastir and GPS

[Andrew Errington]

Another quick question because I can't find the answer in the Wiki 
(instructions seem to assume you have a GPS connected to a radio or TNC).

I have a Linux laptop with a USB soundcard and a USB GPS.  I have Xastir and 
soundmodem.  I want to configure Xastir to periodically send my current 
position (reported from the GPS) as an APRS packet via soundmodem.  How can I 
do this?

73,

Andrew