I have been working on building an APRS iGate from the Raspberry Pi. The setup consists of a USB soundcard that listens to incoming APRS packets and a WiFi USB adapter that connects the Pi to the Internet. I managed to fit everything inside a extruded aluminum enclsoure as you can see in the image below:

I wanted to share the build process, you can find the details here:
http://www.ultratechie.com/2012/10/pigate/
Thanks,
Jatinder
