In Australia there are two CB bands in use – the HF or 27MHz band, sometimes referred to as AM or SSB CB. This CB band became well known following US movies such as “Smokey and the Bandit” and “Convoy”. The HF band in Australia uses the 40 channel allocation used in the USA and a number of other countries.
The other band is the UHF band, unique to Australia (and New Zealand) and very popular amongst business operators needing cheap radiocommunications.
Presented below are the legal channel allocations for the Australian CB bands. Generally accepted and legally recommended channel uses are also shown. It should be noted however that only those shown as legally allocated are actually supported by law. Other channels may be used for specific purposes in different localities.
477MHz UHF CB Band
You can download in PDF format the UHF CB Channel Allocations.
IMPORTANT! As of May 2011 the UHF CB band has been expanded to 80 channels.
The following charts incorporates the colour code below:
- Emergency channels (legally designated)
- General use channels
- Generally accepted use channels
- Repeater output channels
- Repeater input channels
- Legally restricted use channels
|1||476.4250||Repeater output (band1)||41||476.4375||Repeater output (band 2)|
|2||476.4500||Repeater output (band1)||42||476.4625||Repeater output (band 2)|
|3||476.4750||Repeater output (band1)||43||476.4875||Repeater output (band 2)|
|4||476.5000||Repeater output (band1)||44||476.5125||Repeater output (band 2)|
|5||476.5250||Repeater output (band1)
EMERGENCY 1 *
|45||476.5375||Repeater output (band 2)|
|6||476.5500||Repeater output (band1)||46||476.5625||Repeater output (band 2)|
|7||476.5750||Repeater output (band1)||47||476.5875||Repeater output (band 2)|
|8||476.6000||Repeater output (band1)||48||476.6125||Repeater output (band 2)|
|9||476.6250||General use||49||476.6375||General use|
|10||476.6500||4WD #||50||476.6625||General use|
|11||476.6750||Call Channel *||51||476.6875||General use|
|12||476.7000||General use||52||476.7125||General use|
|13||476.7250||General use||53||476.7375||General use|
|14||476.7500||General use||54||476.7625||General use|
|15||476.7750||General use||55||476.7875||General use|
|16||476.8000||General use||56||476.8125||General use|
|17||476.8250||General use||57||476.8375||General use|
|18||476.8500||Caravan/Camper #||58||476.8625||General use|
|19||476.8750||General use||59||476.8875||General use|
|20||476.9000||General use||60||476.9125||General use|
|21||476.9250||General use||61||476.9375||NOT USED3|
|22||476.9500||Data only (no voice)2 *||62||476.9625||NOT USED3|
|23||476.9750||Data only (no voice)2 *||63||476.9875||NOT USED3|
|24||477.0000||General use||64||477.0125||General use|
|25||477.0250||General use||65||477.0375||General use|
|26||477.0500||General use||66||477.0625||General use|
|27||477.0750||General use||67||477.0875||General use|
|28||477.1000||General use||68||477.1125||General use|
|29||477.1250||Pacific Hwy #||69||477.1375||General use|
|30||477.1500||General use||70||477.1625||General use|
|31||477.1750||Repeater input (band1)||71||477.1875||Repeater input (band 2)|
|32||477.2000||Repeater input (band1)||72||477.2125||Repeater input (band 2)|
|33||477.2250||Repeater input (band1)||73||477.2375||Repeater input (band 2)|
|34||477.2500||Repeater input (band1)||74||477.2625||Repeater input (band 2)|
|35||477.2750||Repeater input (band1)
EMERGENCY 1 *
|75||477.2875||Repeater input (band 2)|
|36||477.3000||Repeater input (band1)||76||477.3125||Repeater input (band 2)|
|37||477.3250||Repeater input (band1)||77||477.3375||Repeater input (band 2)|
|38||477.3500||Repeater input (band1)||78||477.3625||Repeater input (band 2)|
|39||477.3750||General use||79||477.3875||General use|
|40||477.4000||Road Channel 4 #||80||477.4125||General use|
* = Legally designated channel use.
# = Generally accepted use.
1 Channels 5 and 35 are allocated for EMERGENCY USE ONLY Australia wide. Channel 35 is used as the input channel for emergency repeaters, so transmissions on channel 35 can block an emergency channel many kilometres away.
2 Data channels are reserved for use by telemetry and telecommand systems only. Use of voice on these channels is illegal.
3 Channels 61, 62 and 63 are not released for use at this stage.
4 While channel 40 is not legally designated as a road channel, it has been used for this purpose since UHF CB was first legalised in Australia. Originally it was legally recognised as the UHF road channel.
27MHz HF CB Band
|Chnl (40 & 23 chnl sets)||Chnl
(old 18 chnl sets)
|8||4||27.055||Road Channel 1 #|
|9||5||27.065||Emergency Channel 2 *|
|11||6||27.085||Call Channel – AM Mode 3 *|
|–||7||27.095||Withdrawn from use by CB service 4|
|16||12||27.155||Call Channel – LSB Mode 3 *|
|–||16||27.195||Withdrawn from use by the CB service 4|
|35||–||27.355||Long Distance (DX) Call Channel – LSB 5 #|
* = Legally designated use.
# = Generally accepted use.
Although there is no legal designation for which general use channels can be used for AM or SSB, the generally accepted use (“gentleman’s agreement”) is for AM mode between channels 1 and 14, and SSB modes from 15 to 40.
1 Although the road channel is not legally designated, it has been used for this purpose in Australia since before CB was legalised. Originally it was legally recognised for this use.
2 The emergency channel is legally designated for this use only.
3 The AM and LSB call channels are legally designated for this use. Conversations must move to a general use channel after contact is made.
4 Australian channels 7 and 16 (18 channel sets) were withdrawn from use for the CB service when Australia adopted the US 40 channel band plan. These channels cannot be used even by 18 channel sets with the channels still installed.
5 Channel 35 LSB has been widely used as a long distance call channel since before 40 channels were legal!
Legal allocation but no licence!
Many people believe that as there is no need for a licence to operate a CB there are no rules or laws to govern the use of CB. If this is what you think, you are WRONG! When CB was first legalised in Australia in 1977 every station had to have a licence. In fact, at first you needed a licence for EVERY CB you owned, at a cost of $25 each per year! Eventually this changed, and then in 1994 the government abandoned individual licences for CB stations opting instead for a Class Licence system. What is a Class Licence? Go to our CB Licensing page for more information.