DOUG UPDATE:
We'd like to say a big thanks to @oricomuhfcb for supplying an Oricom DTX4200 and Town & Country Antenna so Doug can stay in touch with his mates while on the tracks.
The DTX4200 is a very impressive unit; with it's tuck away design you can keep your cabin clutter-free while the Australian first dual receive speaker allows you to receive and listen to two different channels simultaneously.