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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.
1 A cell phone is a full-duplex device. That means that you use one frequency for talking and a second, separate frequency for listening. Both people on the call can talk at once.  Channels - A walkie-talkie typically has one channel, and a CB radio has 40 channels.