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As originally constituted, what is now CB radio was Class D of the Citizens' Radio Service. Classes A and B were in the UHF radio band and served a similar purpose as Class D while Class C was interspersed among the current CB channels and used for remote control of devices, usually model craft (aircraft, watercraft, or road vehicles).
On September 11, 1958 [3]: 14 CB service class D was created on 27 MHz, and this band became what is commonly known today as "Citizens Band". Only 23 channels were available at the time; the first 22 were taken from the former amateur radio service 11-meter band, and channel 23 was shared with radio-controlled devices.
Lower Class Brats / Reducers SF Split (Also known as the Ultra-Violence 7", Pair-O-Docs Records, 1996) 1,000 pressed. 800 black vinyl. 200 white vinyl. With insert. A Wrench In The Gear (Helen Of Oi! Records, 1996) English Import. 1,500 pressed. Black vinyl. Lower Class Brats / Dead End Cruisers Split (Second to None Records, 1996) 500 pressed ...
Examples of standardized services include PMR446 and FM Citizens Band Radio (CB) in the EU and several other countries/regions. 26–27 MHz CB radio is the oldest personal radio service and is used in nearly every country worldwide, with many countries and regions copying the United States 40-channel frequency plan. In many countries, CB radio ...
In Britain, following the Second World War, the quality of life for lower-class citizens was still poor; [6] Osborne used this theme to demonstrate how the state of Britain was guilty of neglect towards those who needed assistance the most. In the play there are comparisons of educated people with savages, illuminating the major difference ...
In the 1960s, the UHF 450–470 MHz band was re-allocated to 25 kHz channels. This meant transmitter deviation was reduced to ±5 kHz. This doubled the number of channels available across the entire 450–470 MHz band. Class B Citizens Radio Service channels were re-allocated to other radio services.
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The 10-meter band was allocated on a worldwide basis by the International Radiotelegraph Conference in Washington, DC, on 4 October 1927. [2] Its frequency allocation was then 28-30 MHz. A 300 kHz segment, from 29.700–30.000 MHz, was removed from the amateur radio allocation in 1947 by the International Radio Conference of Atlantic City.