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Wireless Set No. 10 – 8 channel multiplexed microwave transmitter/receiver. [4] Wireless Set No. 11 – Replacement for No. 1. Used by the likes of the Long Range Desert Group during WW2. Replaced by No. 19. Wireless Set No. 12 – Static or vehicle mounted transmitter station, range about 60 miles (~96 km). Wireless Set No. 17 – 2-valves ...
A practical spark gap transmitter consists of these parts: [11] [13] [14] [15] A high-voltage transformer, to transform the low-voltage electricity from the power source, a battery or electric outlet, to a high enough voltage (from a few kilovolts to 75-100 kilovolts in powerful transmitters) to jump across the spark gap. The transformer ...
Electrical codes require such exposed high voltage equipment to be fenced off from the public, so the mast and antenna tuning hut are surrounded by a locked fence. Usually a chain-link fence is used, but sometimes wooden fences are used to prevent currents induced in a metallic fence from distorting the radiation pattern of the antenna. An ...
It included a winged box kite to raise the antenna. An NSG2 was captured by the British in 1941 and copied as the "Dinghy Transmitter" T-1333. At first the British used a box kite with the set, but by 1943 were using a kite, similar to Silas J. Conyne's 1911 design, [13] that could be launched by a Very pistol.
E.F. Johnson Museum, Waseca, Minnesota EF Johnson Citizen Band walkie-talkie The company was founded in 1923 by Edgar F. Johnson and his wife Ethel Johnson. The company began as a mail order business, selling radio transmitting parts to amateurs and early radio broadcasters from space shared with a woodworking shop located in downtown Waseca.
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).
Buddy box or buddy boxing is a colloquialism referring to two R/C aircraft radio systems joined together for pilot training purposes. [1]This training system is universal among the six major R/C radio manufacturers (Spektrum, Futaba, JR, Hitec, Sanwa/Airtronics and KO Propo) which means that transmitters do not have to be the same brand in order to be joined via an umbilical cable.
The AN/FPS-133 Air Force Space Surveillance System, colloquially known as the Space Fence, was a U.S. government multistatic radar system built to detect orbital objects passing over America. It is a component of the U.S. space surveillance network , and according to the U.S. Navy was able to detect basketball sized (75 cm (30 in)) objects at ...