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Channel Master's original product was a prefabricated television aerial with hinged elements which would unfold and snap into place; this patented design greatly reduced installation time as existing antenna designs at the time had to be bolted together from multiple pieces by rooftop installers. [17]
A new mast was built around 1983 to replace the original structure, primarily to support new mixed-polarisation FM antennas. A 788-foot (240 m) tall temporary mast was erected alongside the 1983 mast in the spring of 2009 while the latter's height was increased by 100 ft (30 m) to 887.5 ft (270.5 m).
The Crystal Palace transmitting station, officially known as Arqiva Crystal Palace, is a broadcasting and telecommunications site in the Crystal Palace area of the London Borough of Bromley, England ( grid reference TQ339712 ). [ 2] It is located on the site of the former television station and transmitter operated by John Logie Baird from 1933.
The Arfon transmitting station is a facility for FM, DAB digital radio and television transmission near the villages of Nebo and Nasareth in Gwynedd, northwestern Wales ( grid reference SH476493 ). It includes a 308.5 m (1,012 ft) guyed mast with antennas attached at various heights.
By 1930 the disadvantages of the T antenna led broadcasters to adopt the mast radiator antenna. [9] One of the first types used was the diamond cantilever or Blaw-Knox tower. This had a diamond (rhombohedral) shape which made it rigid, so only one set of guy lines was needed, at its wide waist. The pointed lower end of the antenna ended in a ...
The original mast at Winter Hill was a 140-metre (450 ft) tower that came into service on 3 May 1956, and carried the programmes of Granada Television (weekdays) and ABC Weekend Television. In 1966 services were transferred to a new higher mast erected adjacent to the original tower.
The antenna used for broadcasting through the 1920s was the T-antenna, which consisted of two masts with loading wires on top, strung between them, requiring twice the construction costs and land area of a single mast. [1] (pp 77–78) In 1924 Stuart Ballantine published two historic papers which led to the development of the single mast antenna.
The upper antenna is a Yagi design. UHF television broadcasting is the use of ultra high frequency (UHF) radio for over-the-air transmission of television signals. UHF frequencies are used for both analog and digital television broadcasts. UHF channels are typically given higher channel numbers, like the US arrangement with VHF channels ...