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Commercial Radio Hong Kong (CRHK, Chinese: 香港商業電台, also known as Hong Kong Commercial Broadcasting Company Limited, is one of the two commercial radio broadcasting companies in Hong Kong, alongside Metro Radio Hong Kong. CRHK offers a variety of radio programs, including news and weather reports, music, and cultural arts.
The development of HD Radio digital sub-channels for FM stations led to a second expanded use for translators. Due to a lack of commercial receivers capable of receiving HD transmissions, a translator is now permitted to retransmit the programming of an FM station's secondary ("HD2") or tertiary ("HD3") signals.
A broadcast transmitter is an electronic device that radiates radio waves modulated with information content intended to be received by the general public. Examples are a radio broadcasting transmitter which transmits audio (sound) to broadcast radio receivers (radios) owned by the public, or a television transmitter, which transmits moving images to television receivers (televisions).
The introduction of organized radio broadcasting in the early 1920s resulted in a dramatic reorientation and expansion of RCA's business activities. The development of vacuum tube radio transmitters made audio transmissions practical, in contrast with the earlier transmitters which were limited to sending the dits-and-dahs of Morse code. Since ...
Carrier current transmission, originally called wired wireless, employs guided low-power radio-frequency signals, which are transmitted along electrical conductors. The transmissions are picked up by receivers that are either connected to the conductors, or a short distance from them.
The war resulted in large orders for radio equipment, and the Aldene plant was expanded, with employment in 1917 rising from 200 to 700. [29] Although the overall U.S. government plan was to restore civilian ownership of the seized radio stations once the war ended, many Navy officials hoped to retain a monopoly on radio communication after the ...
The general radiotelephone operator license (GROL) is a license granted by the U.S. Federal Communications Commission (FCC) that is required to operate certain radio equipment. It is required for any person who adjusts, maintains, or internally repairs FCC licensed radiotelephone transmitters in the aviation, maritime, and international fixed ...
The Canadian Marconi Company operated manufacturing facilities at Montreal, Quebec and in 1919 had established on an experimental basis the first commercial broadcast radio station, XWA. [1] This operation would become CFCF (AM/FM/TV) and CFCX (shortwave); Marconi would be forced to sell the stations due to foreign-ownership restrictions ...
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