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A CB radio is a wireless transceiver that operates on the frequency band called Citizen Band, CB. This band has been reserved for the public. In some countries license is re â¦ quired and in some countries no license is required to operate CB radio. The maximum power limit is 5 Watts.
CB Radio Frequencies & Channels. Citizens Band (CB) radio dates back to the 1940s. The Federal Communications Commission (FCC), which still regulates CB, took bands from the Amateur Radio (a.k.a. Ham) Service's channel 11 to form a band (460-470 megacycles UHF) for personal and business communication, as well as for controlling model aircraft.