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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.
These services began in 1945 to permit citizens a radio band for personal communication (e.g., radio-controlled model airplanes and family and business communications). In 1948, the original CB radios were designed for operation on the 460â470 MHz UHF band.