Bandplans Bandplans The 27 MHz CB27/81 Bandplan is a list of the channel frequencies for UK-only FM CB radio CB radio in the United Kingdom. ...more on Wikipedia about "27 MHz CB27/81 Bandplan"
The airband or air band is the band of frequencies used for radio communication in aviation. Airband is used to mean the VHF band between 108 MHz and 137 MHz, which covers its use for commercial and general aviation, radionavigational aids, air traffic control and other uses. Military aircraft also operate using additional frequencies (225 - 400 MHz) which are not part of the airband. ...more on Wikipedia about "Airband"
Amateur radio frequency allocation is done by national telecommunications authorities. Globally, the ITU oversees how much radio spectrum is set aside for amateur radio transmissions. ...more on Wikipedia about "Amateur radio frequency allocations"
A bandplan or band plan is a plan for utilizing a particular band of radio frequencies, that are a portion of the Electromagnetic spectrum . Each bandplan defines the frequency range to be included, how channels are to be defined, and what will be carried on those channels. Typical definitions set forth in a bandplan are: ...more on Wikipedia about "Bandplan"
The business band is a series of frequencies on the VHF and UHF two-way radio bands. They are reserved for use by businesses, and, although the requirement is sometimes overlooked, they require a license from the Federal Communications Commission prior to use. The exception to this is five specific frequencies that are now part of the Multi-Use Radio Service, which permits unlicensed operation on these frequencies, provided the output power does not exceed 2 watts. ...more on Wikipedia about "Business band"
Citizens' band radio (CB) is, in the United States, a system of short distance radio communication between individuals on a selection of 40 channels within the single 27 MHz (11 meter) band. The CB radio service should not be confused with FRS, GMRS or amateur radio. CB does not require a license and unlike amateur radio, CB may be used for commercial communication. ...more on Wikipedia about "Citizens' band radio"
The Family Radio Service is an improved walkie talkie system authorized in the United States. This personal radio service uses frequencies in the UHF band, and so does not suffer the interference effects found on Citizens Band (CB) at 27 MHz, or the 49 MHz band also used by cordless phones, toys, and baby monitors. FRS uses FM instead of AM, and has a greater reliable range than license-free radios operating in the CB or 49 MHz bands. ...more on Wikipedia about "Family Radio Service" This text is made for www.shortopedia.com shortopedia
In most of the world, the FM broadcast band, used for broadcasting FM radio stations, goes from 87.5 to 108.0 MHz. In the Americas ( ITU region 2) it starts at 87.8, at the top end of TV channel 6. In Japan the FM broadcast band is 76–90 MHz, unlike any other country in the world. The old OIRT band in Eastern Europe was 66–74MHz. ...more on Wikipedia about "FM broadcast band"
In telecommunication, a low-power communication device is a restricted radiation device, exclusive of those employing conducted or guided radio frequency techniques, used for the transmission of signs, signals (including control signals), writing, images and sounds or intelligence of any nature by radiation of electromagnetic energy. Examples: Wireless microphone, phonograph oscillator, radio-controlled garage door opener, and radio-controlled models. ...more on Wikipedia about "Low-power communication device"
(North American broadcast television frequencies) The FM audio carrier is always 4.5 MHz above the VSB video carrier, and the total channel bandwidth is 6MHz. The lower channel boundary is 1.25MHz lower than the video carrier's center frequency, the upper is 4.75MHz above. (See NTSC for more details.) Analog stations must be separated by at least one channel, except where a gap already exists (such as between channels 4/5, 6/7, and 13/14. Digital channels can operate adjacent channel to any station, which is the only reason so many channels could be removed from service for DTV. ...more on Wikipedia about "North American broadcast television frequencies"
PMR446 (Personal Mobile Radio, 446 MHz) is a radio frequency part of the UHF range that is open without licensing for personal usage in most members of the European Union. It has roughly the same use as FRS in the United States. Depending on surrounding terrain range can vary from a few hundred meters (in a city) to a few kilometers (flat coutryside). ...more on Wikipedia about "PMR446"
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