Also known in Canada as General Radio Service. A private, twoway voice communication radio service for use by the general public on an unlicensed basis for personal and business activities. CB radio operates over a short-range of 1
(2) (Citizen's Band) The frequency band of 40 channels for public radio transmission in the 27 MHz range. CB radio uses the same frequencies for sending and receiving on each channel, which is why only one person can talk at the same time (half duplex transmission). CB radios generally have a range of about five miles.