HEAVY DUTY 5 WATT UHF CB RADIO. The UHF400 is a heavy duty 5 watt UHF CB that is specially built for Australian Transport. Oricom’s UHF400 features 12v/24v auto switching which makes it quick and easy to install in any truck regardless of power supply. The external heat sink ensures you maintain a full 5 watt power output and has tuned sensitivity to ensure optimal reception.