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multiple subject fields including signal processing, information theory and biology. In signal processing, a signal is a function that conveys information...

A distress signal, also known as a distress call, is an internationally recognized means for obtaining help. Distress signals are communicated by transmitting...

Signals (often simply known as the Royal Signals – abbreviated to R SIGNALS or R SIGS) is one of the combat support arms of the British Army. Signals...

The station's digital signal remained on its pre-transition UHF channel 32, using virtual channel 6. WPSD's over-the-air signal can reach all parts of...

A thumb signal, usually described as a thumbs-up or thumbs-down, is a common hand gesture achieved by a closed fist held with the thumb extended upward...

is a list of military communications ('Signals') units and formations of the Royal Air Force. In the Royal Air Force sense, wings, groups, and commands...

The United States Army Signal Corps (USASC) is a branch of the United States Army that creates and manages communications and information systems for the...

waves—longitudinal waves which travel through air, consisting of compressions and rarefactions. The energy contained in audio signals or sound power level is typically...

chop an air stream, which is forced through the siren by radial vanes in the spinning rotor. An example of this type of siren is the Federal Signal 2T22...

Signals intelligence (SIGINT) is the act and field of intelligence-gathering by interception of signals, whether communications between people (communications...

navcom.com/ NavCom Defense Electronics "MIL-STD-291 C TACTICAL AIR NAVIGATION SIGNAL". everyspec.com. Retrieved 2024-03-18. TACAN Operation - US Navy...

without Supply Technician (Aircraft). The Air Signal Troops had two career groups, Signals, and General Service. Signals General, Flight Radio Operator, Aircraft...

with a radio, or in the case of a deaf pilot, air traffic control may use a signal lamp (called a "signal light gun" or "light gun" by the FAA) to direct...

Additionally, free-to-air television repeaters and signal boosters can be used to rebroadcast a terrestrial television signal using an otherwise unused...

The station's digital signal is multiplexed: WGTE can be received in quite a large part of the Detroit area; its over-the-air signal reaches far into Detroit's...

residents without clear reception of NBC programs over-the-air. However, the on-air signals were eventually brought back. Until WCAU became an NBC owned-and-operated...

valves admitting air to the horns; each horn was given its own timing characteristics to help mariners identify them. Audible fog signals have been used...

shorter wavelengths may interact with molecules or raindrops in the air, scattering the signal. Very long wavelengths also have additional diffraction effects...

Heart Signal (Korean: 하트시그널) is a South Korean dating reality television show distributed by Channel A. Season 1 of the show aired in 2017, followed by...

Grenade is a US Army grenade used as a ground-to-ground or ground-to-air signaling device, a target or landing zone marking device, or a screening device...