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Kites built to raise signal flags and radio antennae, First Company, Signal Corps, National Guard of New York, 1907. The British Royal Navy experimented with kite raising antennae on HMS Good Hope in 1903, using a box kite designed by Samuel Franklin Cody. A 300-foot kite raised antenna increased their radio range from 60 or 70 miles to 110 ...
Call signs in the United States. Call signs in the United States are identifiers assigned to radio and television stations, which are issued by the Federal Communications Commission (FCC) and, in the case of most government stations, the National Telecommunications and Information Administration (NTIA). They consist of from 3 to 9 letters and ...
Other radio users, like B20, do not fit into the standard battalion model but are also assigned a call sign for protection. The controller of each net has the call sign 0 ("zero"). There may also be a second controller - either a backup station or a commander who has delegated communication tasks to a signaller but may occasionally wish to ...
After the 1993 World Trade Center bombing, radio repeaters for New York City Fire Department communication were installed in the tower complex. Because they were unaware that several controls needed to be operated to fully activate the repeater system, fire chiefs at their command post in the lobby of the North Tower thought the repeater was not functioning and did not use it, though it did ...
The following is a list of FCC-licensed radio stations in the U.S. state of New York, ... Sun Signals LLC ... Black-oriented news WWRV: 1330 AM: New York City: Radio ...
Military communications – or "comms" – are activities, equipment, techniques, and tactics used by the military in some of the most hostile areas of the earth and in challenging environments such as battlefields, on land (compare radio in a box ), underwater and also in air. Military comms include command, control and communications and ...
Radio call signs are a globally unique identifier assigned to all stations that are required to obtain a license in order to emit RF energy. The identifiers consist of from 3 to 9 letters and digits, and while the basic format of the call signs are specified by the ITU-R Radio Regulations, Article 19, Identification of stations, [5] the details are left up to each country's radio licensing ...
Worldwide. The Military Auxiliary Radio System ( MARS) is a United States Department of Defense sponsored program, established as a separately managed and operated program by the United States Army and the United States Air Force. The United States Navy-Marine Corps program closed in 2015. The program is a civilian auxiliary consisting ...