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The 405-line system was used in the Rediffusion Television cable television service in Hong Kong, established in 1957, making it both the first British colony and the first predominantly Chinese city to have television. The service of 405-line system ended in 1973, replaced by 625-line PAL system free-to-air broadcast.
Channel A was never used terrestrially. The only System I Band I transmitter on Channel B was RTÉ One from the Maghera, Co. Clare transmitter during 1963–1999. Channel A was initially intended for use at Maghera but Channel B was used instead because of the risk of interference to (overspill) reception of BBC 405 line transmissions. [2]
A TV transmitter station tower in Temple Hill, Hong Kong. A TV transmitter station in Karaman, Turkey A transmitter station building in Devon, Britain. A transmitter station or transmission facility is an installation used for transmitting radio frequency signals for wireless communication, broadcasting, microwave link, mobile telephone or ...
Analog TV systems global map, with System I in light green. CCIR System I is an analogue broadcast television system.It was first used in the Republic of Ireland starting in December 1961 as the 625-line broadcasting standard to be used on VHF Band I and Band III, sharing Band III with 405-line System A signals radiated in the north and east [1] of the country.
A line servicing Hong Kong Island had been part of the initial 1967 plans for a metro system in the city. The Island line would be approved in 1980 while construction began two years later. In 1985 the station opened along with the first section of the line, which would be extended westward toward Kennedy Town in 2014. The station consists of ...
The station is located between HKU and Sheung Wan on the Island line. It serves the neighbourhood of Sai Ying Pun and the western part of Mid-Levels in northwestern Hong Kong Island, Hong Kong. Sai Ying Pun station was opened on 29 March 2015, completing the West Island line extension of the Island line. [3]
In each frame there are 405 lines (or 202.5 lines in a field.) So the line rate (line frequency) is 405 times the frame frequency or 405•25=10,125 Hz. The video bandwidth was 3.0 MHz. The video signal modulates the carrier by amplitude modulation, but a portion of the upper sideband is suppressed.
The East Rail line Metro Cammell EMU (also known as Mid-Life Refurbishment Train, Chinese: 港鐵中期翻新列車; or MLR Train) was a model of electric multiple unit built in 1980–1990 by Metro-Cammell for the original Kowloon–Canton Railway (now the East Rail line) in Hong Kong.