CB radio frequencies are divided into 40 channels, each with a unique frequency. Channel 9 is a popular channel for emergency and safety communications.
The 40 channels are divided into two main categories: standard channels and extended channels. Standard channels are channels 1-23 and 25-40, while extended channels are channels 24 and 26-40.
CB radio frequencies are allocated by the Federal Communications Commission (FCC) in the United States. The FCC has established specific rules and regulations for CB radio use, including frequency allocations and power limits.
CB radios can be used for a variety of purposes, including communicating with friends and family, checking the weather, and even emergency communications.
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CB Band Frequencies
CB Band Frequencies are used for communication, usually within a few miles. The original Citizen Band frequency allocation from the FCC is in the 27MHz band.
CB radios can be found on one or another of the 40 channels, depending on what they are trying to do. Channel 1 is the most popular CB channel, while channel 13 is the least used because it doesn't overlap with any VHF radio service.
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The majority of highway/truck drivers operate around channels 5 and 11, while many boaters use channels 16 through 22 for local communications within their immediate area. These frequencies have been used by many people and groups frequently employ CB channels for quick-range conversation.
CB Radios operate on a frequency range of 26.965 to 27.405 MHz, providing a straightforward and smooth-to-use method of conversation for expert, recreational, and personal use. If you travel on the American highways, having a cheap CB radio in your car and a K40 five foot mag mount antenna on your roof is a smart move.
Here's a list of the 40 CB channels, along with their frequencies:
Recommendations
If you're interested in using CB band frequencies for personal or business purposes, here are some recommendations to consider.
The 11-meter band, also known as the 27 MHz band, is a popular choice for CB radios due to its relatively low cost and ease of use.
Be sure to check the local regulations and laws regarding CB radio usage in your area, as they can vary.
The CB band frequencies are allocated in the 26.965 MHz to 27.235 MHz range, with 40 channels available for use.
If you're planning to use a CB radio for extended periods, consider investing in a high-quality antenna to improve reception and range.
Channel 9 is often used for emergency and safety purposes, such as reporting accidents or weather conditions.
Make sure to follow proper etiquette and protocols when using a CB radio, such as identifying yourself and respecting other users' conversations.
For more insights, see: Long Range Cb Antenna
Country-Specific Channels
Each country has its own unique CB call sign prefix, making it easier to identify fellow hams from different nations. For example, the prefix for England is 26.
These prefixes are essential for communication on the CB band, especially when operating internationally.
American Channels
American channels are a great place to start your CB radio adventure. The USA CB frequencies are the same as the EU CB frequencies, which can make it difficult to work European stations when the band is open to the USA.
Channel 4 is designated for off-roading, which is perfect for those who love exploring the great outdoors. Channel 6 is considered the "Super Bowl" channel, which is great for catching the action.
Here's a list of some of the most interesting American channels:
You may have noticed that some of these channels are designated for specific purposes, such as emergency or off-roading. This can be a great way to connect with like-minded individuals who share your interests.
EU & UK Channels
The EU and UK have a combined total of 80 channels for CB use. The UK has 69 channels of its own, with the remaining 11 channels being shared with the EU.
You can find the specific frequencies for these channels in the table below. Channels 1-20 and 23-40 are listed, with the EU and UK frequencies side by side for easy reference.
Country Call Sign Prefixes
Each country has its own CB call sign prefix, and knowing yours can be a lifesaver if you're ever in a jam on the road. The prefix for England is 26, which is a great example of how these prefixes work.
Having a CB radio can be a great way to stay connected with other drivers on the road, and using the right call sign prefix is essential. The prefix for England is 26.
If you're planning a road trip to England, make sure to know the call sign prefix for the country so you can communicate with other drivers.
Old Channels
The old UHF CB channels were a bit different from what we're used to today. They operated on frequencies ranging from 934.0125 MHz to 934.9625 MHz.
There were 20 channels in total, each with its own unique frequency. You can see the full list of frequencies in the table below. Channel 1 was 934.0125 MHz, and it went all the way up to channel 20 at 934.9625 MHz.
The maximum power allowed on these CB frequencies was 4 Watts. This was a restriction that applied only to the CB frequencies, not the amateur bands.
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Here Is the History
The concept of old channels dates back to the early days of television broadcasting. The first television channel, BBC Television, was launched in 1936 in the UK.
In the 1950s, TV channels expanded rapidly, with the first commercial TV channel, DuMont, debuting in the US in 1946. This marked the beginning of a new era in entertainment and information broadcasting.
Old channels were often broadcast in black and white, with the first color TV broadcast taking place in the US in 1954.
Old UHF Channels
Old UHF Channels were a bit of a mystery to me until I dug into the details. The Old UHF 934MKz CB channels and frequencies were quite specific, with Channel 1 starting at 934.0125 MHz and Channel 20 ending at 934.9625 MHz.
These channels were assigned a maximum power of 4 Watts, a restriction that didn't apply to the amateur bands. I've always been fascinated by the limitations and regulations surrounding radio frequencies.
Each channel had a unique frequency, ranging from 934.0125 MHz to 934.9625 MHz, with Channel 1 and Channel 20 being the bookends of this range.
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Lists and Charts
The CB band frequencies are listed in six 40-channel bands - A to F, spanning 11 meter frequencies from 25MHz to 28MHz.
Channel 1 operates on 26.965 MHz, open to everyone, while Channel 4 is often used for 4x4s/off-roading on 27.005 MHz.
Channel 19 is used by truckers for East/West Highway Traffic on 27.185 MHz, and Channel 20 operates on 27.205 MHz, open to everyone.
Chart
The CB radio has a long history, and one of its most recognizable features is the chart of frequencies and channels.
CB radios operate on the 27MHz band, and the original frequency allocation from the FCC is in this band.
In the US, there are 40 channels available for CB radio use, ranging from Channel 1 at 26.965 MHz to Channel 40 at 27.405 MHz.
Here's a breakdown of the channels and their frequencies:
SSB AM Modes:
You can now use SSB and AM on UK CB frequencies. This change is explained by Ofcom.
The use of SSB and AM on UK CB frequencies is now permitted. This information is crucial for anyone looking to upgrade their CB radio setup.
Ofcom is the source of this new information, and it's essential to check their website for the latest updates.
Frequently Asked Questions
What is the most commonly used CB channel?
Truckers commonly use channels 17 and 19, with channel 17 often used by east- and westbound roads and channel 19 by north- and southbound roads
Is CB channel 9 still monitored?
Channel 9 is still monitored in some areas, primarily by volunteer organizations and private individuals. However, its use as an emergency channel has declined significantly since the 1990s.
Is the Citizens Band UHF or VHF?
The original Citizens Band (CB) radios operated on the UHF (Ultra High Frequency) band, specifically between 460–470 MHz. This frequency range is part of the UHF spectrum, which is higher than the VHF (Very High Frequency) range.
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