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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).
A short-range simplex radio communications service for recreational use is from 477.5250 to 477.9875 MHz FM mode with 38 channels and a power output of 500 mW. A CB radio or Personal Radio Service Device under Class Assignment does not need an individual license to operate in Malaysia if it adheres to the rules of the Warta Kerajaan Malaysia [33]
CB slang is the distinctive anti-language, argot, or cant which developed among users of Citizens Band radio (CB), especially truck drivers in the United States during the 1970s and early 1980s, [1] when it was an important part of the culture of the trucking industry. The slang itself is not only cyclical, but also geographical.
The 4-pin mini-DIN that is most common in consumer products today debuted in JVC's 1987 S-VHS. The 7-pin mini-DIN is commonly used on laptops. Used with PAL, NTSC or SECAM color. Where two connectors are used, they are labeled Chroma and Luma. MDA: 1981: DE-9: Digital: 720 × 350 @ 50, Text only: IBM PC, PC/XT, PC/AT and compatibles: RGBI : 640 ...
The 27 MHz CB27/81 Bandplan is a list of the channel frequencies for FM CB radio in the United Kingdom.. Unlike CB usage in the United States, and subsequently elsewhere in the world, the original UK 40 channels progress in order with 10 kHz spacing.
4.1-9.5 connector, standardized as DIN 47231 (in 1974) and IEC 60169-11 (in 1977) 4.3-10 connector, formerly known as DIN 4.3/10, now standardized as IEC 61169-54; Belling-Lee connector, also called IEC 61169-2 connector, used throughout Europe and Australia, as well as parts of South-East Asia, for domestic television and FM radio antenna cabling
Citizens band radio (often shortened to CB radio) is a system of short-distance radio communications between individuals on a selection of 40 channels within the 27-MHz (11 m) band. In the United Kingdom, CB radio was first legally introduced in 1981, but had been used illegally for some years prior to that.
Circuit symbol of a heptode. The development of the pentagrid or heptode (seven-electrode) valve was a novel development in the mixer story. The idea was to produce a single valve that not only mixed the oscillator signal and the received signal and produced its own oscillator signal at the same time but, importantly, did the mixing and the oscillating in different parts of the same valve.