CB RADIO CHANNEL ALLOCATION AUSTRALIA
UHF CB RADIO CHANNEL ALLOCATION
USED FOR	CHANNEL/S	COMMENTS
Calling	11	To call or locate another station. Parties then switch to a conversation channel
Established by law
	9,
	12 to 17,
	19 to 21,
Conversations	24 to 30,	Used for conversations between stations
	39
Highway Communications	40	Mainly used by Truck Drivers and other Highway users
Caravaners, Campers	18	Holiday Maker’s communication channel, e.g., when in convey
4WDrivers	10	Used by 4WD enthusiasts, clubs, convoys and in national parks.
Emergency Calling	5	Can be used by anyone in an emergency situation ONLY
Established by law
Repeaters
Established by law	1 to 8 31 to 38	In duplex mode, repeaters need two channels to work. Receives on 1 to 8. Transmits on 31 to 38 (automatically). When within range of a repeater, it will increase the communications distance. Operation in simplex mode on these channels is not permitted when within range of a repeater.
Data Transmissions	22, 23	No voice transmissions allowed on these two channels
Established by law
HF (27 MHz) CB RADIO CHANNEL ALLOCATION
USED FOR	CHANNEL/S	COMMENTS
Calling
Established by law	AM Mode	To call or locate another station. Parties then switch to a conversation channel
	11
	SSB Mode (LSB)
	16, 35 **
	AM Mode
	1 to 7, 12 to 14
		Used for conversations between stations
Conversations
	SSB Mode (LSB or USB)
	15, 17 to 21, 23 to 34, 36 to 40
Highway Communications	AM Mode	Mainly used by Truck Drivers and other Highway users
(Truckies Channel)	8
Convoy Channel	AM Mode	Holiday Maker’s communication channel or any group in convey
	22
	AM Mode
	9
Emergency Calling		Can be used by anyone in an emergency situation ONLY
Established by law
	SSB Mode (USB)
	9
	AM Mode	Used by 4WD enthusiasts, clubs, convoys, outback travellers and in national parks.
4Wdrivers	10
** channel 35 (not established by law) by tradition is a secondary calling channel.