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The SCR-694 is a portable high frequency two way radio set that was used by the U.S. military during World War II.The SCR-694 provides transmission and reception of AM radiotelephony and MCW or CW radiotelegraphy within the frequency range of 3.800 to 6.500 MHz.
Prior to the creation of the DHFCS, the Royal Air Force (RAF) and Royal Navy (RN) operated their own independent high frequency (HF) communications systems. The RAF's Strike Command Integrated Communications System (STCICS), later known as Terrestrial Air Sea Communications (TASCOMM), operated from six sites within the UK whilst the RN system had twelve sites. [2]
A radio mast base showing how virtually all lateral support is provided by the guy-wires. The terms "mast" and "tower" are often used interchangeably. However, in structural engineering terms, a tower is a self-supporting or cantilevered structure, while a mast is held up by stays or guy-wires. [1] A mast
The lull between World War I and World War II reduced center operations to mostly reconditioning and sale of the stockpiles which had been needed earlier to ensure the nations defense. During World War II the center became the largest military supply installation in the world. In December 1942, an additional 295 acres (1.19 km 2) were purchased ...
3 masts, each 160 metres tall, shut-down in 2002 Neuharlingersiel Navy Transmitter: Neuharlingersiel, Germany: 53 kHz: 3 masts, two 164 metres tall and one 171 metres tall, since 2004 no VLF/LF-transmissions Clifden Marconi Transmitter: Derrigimlagh, Clifden, Ireland: 54.5 kHz
The station's current antenna was built in 1972; it consists of two guyed masts, each 458.11 metres (1503 feet) tall, which are configured as umbrella antennas. They are fed by an overhead cable, fixed to a tall mast at one end, and at the opposite end to a smaller grounded mast near the helix building via an insulator.
DHO38 uses an umbrella antenna which is carried from eight steel tube masts with a height of 352.8 metres. Each pylon stands on three-metre-tall ceramic cylinders, which serve as insulators for voltages up to 300 kV. The masts are equipped with cylindrical oscillation dampers for better protection against storms. The transmitter is capable of ...
TM 9-2800 Standard Military Motor Vehicles. dated 1 sept. 1943; TM 9-2800 Military vehicles dated October 1947; TM 11-227 Signal Communication Directory. dated 10 April 1944; TM 11-364 K-44-B Truck and earth borer equipment HD; TM 11-487 Electrical Communication systems Equipment. dated 2 October 1944; TM 11-487-C1 military standardization ...
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