CB radio uses the same frequencies for sending and receiving on each channel, which is why two people cannot talk to each other at the same time (see half-duplex).

Check out these CB Radios only on truckinweb.com, the official website of Truckin' Magazine. ... Essentially, while using side band you do not broadcast a carrier frequency.

That is why we require a Citizens Band radio (CB) on the Ultimate Adventure. Having a CB is but the first step in communicating on the trail though, not the last.

Because radio frequencies are limited, the airwaves are a shared space. When you say something over a CB, you can and will be heard by anyone within range with their radio turned on.

CB radios, the center of REACT's universe, ... (Family Radio Service) and GMRS (General Mobile Radio Service) frequencies sell for as little as $40 each. Advertisement.

CB radio can trace its roots back to 1958 when the Federal Communication Commission (FCC) established the Citizens Radio Service, but it didn't really take off until the 1970s.