Services - CB Channel Usage
Many of the listed channel usages below are generally accepted use among CB operators. Although the channel usage is not designated by law many of the designations have been in place since CB radio was first used in Australia. One of the exceptions to this is the use of the Emergency Channels (5 & 35 on UHF, & 9 on HF). These emergency designations are legally recognized. You must not use these channels except during an emergency.
There are specific conditions regarding personal conduct during operation of a CB radio station, and penalties apply for improper conduct. In particular, the CBRS class licence states that: A person must not operate a CB station in a way that would be likely to cause a reasonable person, justifiably in all the circumstances, to be seriously alarmed or seriously affronted, or for the purpose of harassing a person.
Here you will find information relating to over-seas CB call frequencies.
Australian UHF Channel Usage
Channel Duplex/Simplex Use
Channel 1 - 4 Duplex - Output Chat via repeater
Channel 5 Duplex - Output Emergency use only
Channel 6 - 8 Duplex - Output Chat via repeater
Channel 9 Simplex General Chat
Channel 10 Simplex 4WD Drivers - Convoy, Clubs & National Parks/State Forest
Channel 11 Simplex Call Channel - Then move to vacant channel
Channel 12 - 17 Simplex General Chat
Channel 18 Simplex Caravan & Campers Convoy Channel
Channel 19 - 21 Simplex General Chat
Channel 22 Data Data Only - No Voice
Channel 23 Data Data Only - No Voice
Channel 24 - 28 Simplex General Chat
Channel 29 Simplex Pacific Hwy (NSW) & Bruce Hwy, Hume Hwy, (QLD) Road Channel
Channel 30 Simplex Warnings / Broardcasts in some areas
Channel 31-34 Duplex - Input Do not use
Channel 35 Duplex - Input Emergency Use Only (Transmit frequency for Channel 5)
Channel 36 - 38 Duplex - Input Do not use
Channel 39 Simplex General Chat
Channel 40 Simplex Highway (Truck) Channel, if not using Ch 29.
Channel 41 - 48 Duplex - Output Chat via repeater
Channel 49 - 60 Simplex General Chat
Channel 61 Simplex Reserved for Future Expansion
Channel 62 Simplex Reserved for Future Expansion
Channel 63 Simplex Reserved for Future Expansion
Channel 64 - 70 Simplex General Chat
Channel 71 - 78 Duplex - Input Do not use
Channel 79 - 80 Simplex General Chat
Updated On: 10/08/2020
Australian HF (27 MHz - 11m) Channel Usage
Channel Mode TX Freq Usage
Channel 1 AM 26.965 General Chat
Channel 2 AM 26.975 General Chat
Channel 3 AM 26.985 General Chat
Channel 4 AM 27.005 General Chat
Channel 5 AM 27.015 General Chat
Channel 6 AM 27.025 General Chat
Channel 7 AM 27.035 General Chat
Channel 8 AM 27.055 Truckers Channel
Channel 9 AM or USB 27.065 Emergency Frequency
Channel 10 AM 27.075 Used by 4WD enthusiasts, clubs, convoys, outback travellers and in national parks.
Channel 11 AM 27.085 Call Channel - Then move to a General Chat channel
Channel 12 AM 27.105 General Chat
Channel 13 AM 27.115 General Chat
Channel 14 SSB 27.125 General Chat
Channel 15 SSB 27.135 General Chat
Channel 16 LSB 27.155 Sideband Call Channel
Channel 17 SSB 27.165 General Chat
Channel 18 SSB 27.175 General Chat
Channel 19 SSB 27.185 General Chat
Channel 20 SSB 27.205 General Chat
Channel 21 SSB 27.215 General Chat
Channel 22 AM 27.225 Holiday Maker’s communication channel or any group in convey
Channel 23 SSB 27.255 General Chat (Channel location & Frequency mixed)
Channel 24 SSB 27.235 General Chat
Channel 25 SSB 27.245 General Chat
Channel 26 SSB 27.265 General Chat
Channel 27 SSB 27.275 General Chat
Channel 28 SSB 27.285 General Chat
Channel 29 SSB 27.295 General Chat
Channel 30 SSB 27.305 General Chat
Channel 31 SSB 27.315 General Chat
Channel 32 SSB 27.325 General Chat
Channel 33 SSB 27.335 General Chat
Channel 34 SSB 27.345 General Chat
Channel 35 LSB 27.355 Long Distance (DX) Call Channel
Channel 36 SSB 27.365 General Chat
Channel 37 SSB 27.375 General Chat
Channel 38 SSB 27.385 General Chat
Channel 39 SSB 27.395 General Chat
Channel 40 SSB 27.405 General Chat
Key
AM = Amplitude Modulation mode
SSB = Single Side Band (Either USB or LSB) mode
USB = Upper Side Band mode
LSB = Lower Side Band mode
