The Citizens Band (CB) radio service is a private, two-way, short-distance voice communications service for personal or business activities of the general public. In most countries, CB radio operates on a range of 40 channels within the 27 MHz (11 meter) band.
In the United States, the FCC (Federal Communications Commission) allocated the following 40 channels for CB radio use:
- Channel 1: 26.965 MHz
- Channel 2: 26.975 MHz
- Channel 3: 26.985 MHz
- Channel 4: 27.005 MHz
- Channel 5: 27.015 MHz
- Channel 6: 27.025 MHz
- Channel 7: 27.035 MHz
- Channel 8: 27.055 MHz
- Channel 9: 27.065 MHz
- Channel 10: 27.075 MHz
- Channel 11: 27.085 MHz
- Channel 12: 27.105 MHz
- Channel 13: 27.115 MHz
- Channel 14: 27.125 MHz
- Channel 15: 27.135 MHz
- Channel 16: 27.155 MHz
- Channel 17: 27.165 MHz
- Channel 18: 27.175 MHz
- Channel 19: 27.185 MHz
- Channel 20: 27.205 MHz
- Channel 21: 27.215 MHz
- Channel 22: 27.225 MHz
- Channel 23: 27.255 MHz
- Channel 24: 27.235 MHz
- Channel 25: 27.245 MHz
- Channel 26: 27.265 MHz
- Channel 27: 27.275 MHz
- Channel 28: 27.285 MHz
- Channel 29: 27.295 MHz
- Channel 30: 27.305 MHz
- Channel 31: 27.315 MHz
- Channel 32: 27.325 MHz
- Channel 33: 27.335 MHz
- Channel 34: 27.345 MHz
- Channel 35: 27.355 MHz
- Channel 36: 27.365 MHz
- Channel 37: 27.375 MHz
- Channel 38: 27.385 MHz
- Channel 39: 27.395 MHz
- Channel 40: 27.405 MHz
It’s important to note that these frequencies are for the US only, different countries may have different frequencies allocated for CB radio use. In some countries, CB radios operate on different frequencies and channel allocations than those listed above. For example, in the European Union, the CB radio service operates on a range of 40 channels within the 26.965 MHz to 27.405 MHz band. Additionally, some countries may have additional channels, or different power limits and other regulations.