CB Radio Definition – What is a CB Radio?

cb radio definition

If you’ve ever wondered what a CB radio is, this definition can help you understand how these devices work. CBs are basically radios that are broadcast over a frequency band. While they are similar to regular radios, there are several differences, including the frequencies that are shared by CBs. For example, CBs in Japan have different channels than their equivalents in the US. Furthermore, CB operators in these countries would be breaking U.S. laws if they were allowed to operate radios on these frequencies.

While most people think of a CB radio as a tool used by truckers, it is actually widely used by public safety and radio enthusiasts. CB radios are useful for communication in remote locations with poor cell service and during natural disasters, as they continue to function even when other communication lines fail. In addition, CBs do not require a license, unlike HAM radios, which require a license from the FCC.

While the HF spectrum has a limit, the HF spectrum covers frequencies from 3 to 30 MHz. Signals in this range are refracted by charged ions in the ionosphere. This process is known as skywave propagation, or shooting skip. In the past, CB operators have communicated over thousands of miles. Even the low-power 27 MHz signals have been known to travel for miles.