CB radio


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CB radio:

see radioradio,
transmission or reception of electromagnetic radiation in the radio frequency range. The term is commonly applied also to the equipment used, especially to the radio receiver.
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CB radio

(Citizen's Band radio) 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). With a range of approximately five miles, CB radios were popular with truck drivers in the 1970s and 1980s until mostly giving way to cellphones. See ISM band.
References in periodicals archive ?
CB Radio buffs Paul Bradwell, alias The Badger, and Joseph Hunt, alias Bluebird II.
When these two conditions were met, CB radio became a practical means of real-time highway communication.
By the mid-1980's, the fad had died down, but million of motorists still use CB radios to listen for police activity and call for help when they travel.
The McKinley USA is a 12/24 Volt, 40 Channel DIN sized CB Radio featuring AM/USB/LSB capabilities, front panel loudspeaker with President's unique ASC (Automatic Squelch Control), Murata filters, Automatic SWR (beep sound), Weather channel with Alert, a three color changeable large LCD display, VOX (hands free function) and much more.
People who bought cell phones for emergency use are learning that the 911 equivalent on a CB radio - Channel 9 - can be called for a fraction of the cost.
President Electronics USA COO, Kavi Sharma stated, "We are bringing awareness to our new line of CB radios, the Johnny III and Johnson II in the North American CB radio market.
I tried to use my CB radio to call for help but we were at the bottom of a canyon, so there was absolutely no reception.