The block diagram of the current configuration is shown here:
The repeater is currently running at 20 watts. The UDRC connects to the repeater through its remote port, and mounts on the Raspberry Pi's 40-pin connector.
The Pi is running the 'Compass' image which was provided by NW Digital and uses the G4KLX dstarrepeaterd deamon and the ircddbgatewayd daemon to connect to the D-STAR network.
Once we move it to the official site it will have heliax to a better antenna and a whole lot more height.