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ARC-164
The AN/ARC-164 is an US military UHF aircraft radio that operates in the aeronautical mobile (OR) service / B band (NATO). It was first introduced in 1981 and might be found on B-52G/H, B-1B, C/EC/RC-26D, C-5, KC-135, C-23, C-130, C-141, F-15, A-10, F-16, UH-1D, CH-47, H-53, H-60 and S-3B aircraft. System Description The ARC-164 is a military UHF AM aircraft station that operates between 225-399.975 MHz (the ''NATO harmonised UHF band 225-400 MHz'' is also a subset of this particular band as defined by the NJFA) and transmits at 10 watts. It features a separate receiver for monitoring 243 MHz while simultaneously monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Station
An aircraft station (also aircraft radio station) is – according to ''Article 1.83'' of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.83, definition: ''aircraft radio station / aircraft radio station'' – defined as "A mobile radio station in the aeronautical mobile service, other than survival craft station, located on board an aircraft". Each station shall be classified by the service in which it operates permanently or temporarily. ;See also: ;Selection of UHF/VHF aircraft stations US Navy 030806-N-8629M-002 Lt. Stacy Justeson, a pilot with the 'Providers' of Fleet Logistics Squadron Thirty (VRC 30).jpg, US Navy Grumman C-2 Greyhound used for Aeronautical mobile (OR) service Arc-164-rt.jpg, AN/ARC-164 The AN/ARC-164 is an US military UHF aircraft radio that operates in the aeronautical mobile (OR) service / B band (NATO). It was first introduced in 1981 and m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aircraft Station
An aircraft station (also aircraft radio station) is – according to ''Article 1.83'' of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.83, definition: ''aircraft radio station / aircraft radio station'' – defined as "A mobile radio station in the aeronautical mobile service, other than survival craft station, located on board an aircraft". Each station shall be classified by the service in which it operates permanently or temporarily. ;See also: ;Selection of UHF/VHF aircraft stations US Navy 030806-N-8629M-002 Lt. Stacy Justeson, a pilot with the 'Providers' of Fleet Logistics Squadron Thirty (VRC 30).jpg, US Navy Grumman C-2 Greyhound used for Aeronautical mobile (OR) service Arc-164-rt.jpg, AN/ARC-164 The AN/ARC-164 is an US military UHF aircraft radio that operates in the aeronautical mobile (OR) service / B band (NATO). It was first introduced in 1981 and m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Military Electronics Of The United States
This article lists types of American military electronic instruments along with brief descriptions of them. Electronic items of this sort are assigned designations according to the Joint Electronics Type Designation System, beginning with the AN/ prefix. They are grouped below by the first designation letter following this prefix. A *AN/AAA-4: Infrared System for F-4H, ACF, Inc., Avion Division. *AN/AAD-4: Forward Looking Infrared Detection Set (FLIR) manufactured by Texas Instruments; used in AC-119G *AN/AAD-5: Infrared IR Reconnaissance Set Manufactured by Honeywell Aerospace Systems; RF-4C *AN/AAD-7: Forward Looking Infrared Detection Set (FLIR) manufactured by Texas Instruments, Inc.; used in AC-130-A, E, H *AN/AAQ-1: Spectrometer *AN/AAQ-2: Aircraft pod-mounted FLIR system, aka "LITENING" *AN/AAQ-3: Aircraft Targeting System, aka "Sniper XR" *AN/AAQ-4: Infrared Countermeasures System; manufactured by Hallicrafters and by Northrop; used in B-66, EB-66C/E, B-52, RF-4C *A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CH-53 Sea Stallion
The CH-53 Sea Stallion (Sikorsky S-65) is an American family of heavy-lift transport helicopters designed and built by the American manufacturer Sikorsky Aircraft. It was originally developed in response to a request from the United States Navy's Bureau of Naval Weapons made in March 1962 for a replacement for the Sikorsky CH-37 Mojave helicopters flown by the United States Marine Corps (USMC). In July 1962, Sikorsky's proposal, which was basically a scaled-up S-61R fitted with twin General Electric T64 turboshaft engines and the dynamic system of the S-64/CH-54, was selected. On 14 October 1964, the YCH-53A performed its maiden flight; the first deliveries of production CH-53s to operational units commenced on 12 September 1966. The first combat use of the type occurred during the following year when it was deployed to the Vietnam theatre; the CH-53 quickly proved its value for moving heavy payloads, particularly in the recovery of damaged aircraft. Several variants of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direction Finding
Direction finding (DF), or radio direction finding (RDF), isin accordance with International Telecommunication Union (ITU)defined as radio location that uses the reception of radio waves to determine the direction in which a radio station or an object is located. This can refer to radio or other forms of wireless communication, including radar signals detection and monitoring (ELINT/ESM). By combining the direction information from two or more suitably spaced receivers (or a single mobile receiver), the source of a transmission may be located via triangulation. Radio direction finding is used in the navigation of ships and aircraft, to locate emergency transmitters for search and rescue, for tracking wildlife, and to locate illegal or interfering transmitters. RDF was important in combating German threats during both the World War II Battle of Britain and the long running Battle of the Atlantic. In the former, the Air Ministry also used RDF to locate its own fighter gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Counter-countermeasures
Electronic counter-countermeasures (ECCM) is a part of electronic warfare which includes a variety of practices which attempt to reduce or eliminate the effect of electronic countermeasures (ECM) on electronic sensors aboard vehicles, ships and aircraft and weapons such as missiles. ECCM is also known as electronic protective measures (EPM), chiefly in Europe. In practice, EPM often means resistance to jamming. A more detailed description defines it as the electronic warfare operations taken by a radar to offset the enemy's countermeasure. History Ever since electronics have been used in battle in an attempt to gain superiority over the enemy, effort has been spent on techniques to reduce the effectiveness of those electronics. More recently, sensors and weapons are being modified to deal with this threat. One of the most common types of ECM is radar jamming or spoofing. This originated with the Royal Air Force's use of what they codenamed ''Window'' during World War II, which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guard Channel
The aircraft emergency frequency (also known as GUARD) is a frequency used on the aircraft band reserved for emergency communications for aircraft in distress. The frequencies are 121.5 MHz for civilian, also known as International Air Distress (IAD) or VHF Guard, and 243.0 MHz—the second harmonic of VHF guard—for military use, also known as Military Air Distress (MAD) or UHF Guard. Earlier emergency locator transmitters (ELTs) used the guard frequencies to transmit, but an additional frequency of 406 MHz is used by a more modern emergency locator transmitter. History The choice of 121.5 MHz was made by ICAO in conjunction with ARINC and the ITU. Monitoring In the United States, the emergency frequency is monitored by most air traffic control towers, FSS services, national air traffic control centers, military air defense and other flight and emergency services, as well as by many commercial aircraft. The notice to airmen FDC 4/4386 requires "…all aircr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watt
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit). : ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NJFA
__NOTOC__ NATO Joint Civil/Military Frequency Agreement (NJFA) and is the universal NATO common civil/military treaty to regulate the military access to the radio frequency spectrum in the range of 14 kHz to 100 GHz in peacetime, during exercises, in times of crisis, and in military operations. This document has been the basis for the frequency utilisation in NATO-Europe since 1982. Nations and organisations, e.g. partnership for peace countries, are invited to participate as deemed to be necessary. The national representatives of the frequency sovereignty agree unanimous to changes of the NJFA, in line to decisions of World Radiocommunication Conferences, operational requirement of the armed forces, and technical developments. However, the provision of "Article 38 of the International Telecommunication Convention, Nairobi 1982" remains untouched.International Telecommunication Convention, Nairobi 1982; § 163, 1. The member countries contain full sovereignty pertaining m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hertz
The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s−1, meaning that one hertz is the reciprocal of one second. It is named after Heinrich Rudolf Hertz (1857–1894), the first person to provide conclusive proof of the existence of electromagnetic waves. Hertz are commonly expressed in multiples: kilohertz (kHz), megahertz (MHz), gigahertz (GHz), terahertz (THz). Some of the unit's most common uses are in the description of periodic waveforms and musical tones, particularly those used in radio- and audio-related applications. It is also used to describe the clock speeds at which computers and other electronics are driven. The units are sometimes also used as a representation of the energy of a photon, via the Planck relation ''E'' = ''hν'', where ''E'' is the photon's energy, ''ν'' is its freq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
