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Green Pine (communications)
The Green Pine UHF communications system was designed to relay Strategic Air Command (SAC) Emergency Action Messages (EAMs) to SAC aircraft. Green Pine was designed in 1967. Each Green Pine station was equipped with a variety of communications systems, to ensure that nuclear command and control messages would reach nuclear strategic bombers in northern latitudes. Locations * Adak, Alaska * Naval Station Argentia, Newfoundland * Barter Island * Cambridge Bay * Cape Dyer * Cape Parry * Cold Bay * Dye 3 * Hall Beach * Melville * Keflavik, Iceland * Point Barrow * Thule, Greenland See also * Survivable Low Frequency Communications System (SLFCS) * Post Attack Command and Control System (PACCS) * Ground Wave Emergency Network (GWEN) * Minimum Essential Emergency Communications Network (MEECN) * Emergency Rocket Communications System The Emergency Rocket Communications System (ERCS) was designed to provide a reliable and survivable emergency communications method for the United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra High Frequency
Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one tenth of a meter (one decimetre). Radio waves with frequencies above the UHF band fall into the super-high frequency (SHF) or microwave frequency range. Lower frequency signals fall into the VHF ( very high frequency) or lower bands. UHF radio waves propagate mainly by line of sight; they are blocked by hills and large buildings although the transmission through building walls is strong enough for indoor reception. They are used for television broadcasting, cell phones, satellite communication including GPS, personal radio services including Wi-Fi and Bluetooth, walkie-talkies, cordless phones, satellite phones, and numerous other applications. The IEEE defines the UHF radar band as frequencies between 300 MHz and 1 GHz. Two other IEEE ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hall Beach
Sanirajak (Inuktitut meaning ''the shoreline''), Syllabics: ᓴᓂᕋᔭᒃ), formerly known as Hall Beach until 27 February 2020, is an Inuit settlement within the Qikiqtaaluk Region of Nunavut, Canada, approximately south of Igloolik. History It was established in 1957 during the construction of a Distant Early Warning (DEW) site. Currently the settlement is home to a North Warning System () radar facility and the Sanirajak Airport. In 1971, seven sounding rockets of the Tomahawk Sandia type were launched from Sanirajak, some reaching altitudes of . Demographics In the 2021 Canadian census conducted by Statistics Canada, Sanirajak had a population of 891 living in 197 of its 205 total private dwellings, a change of from its 2016 population of 848. With a land area of , it had a population density of in 2021. Geography Climate Sanirajak has a tundra climate (Köppen: ''ETf''), a polar climate sub-type under the Köppen climate classification, without the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Radio Systems Of The United States
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. Militaries are typically authorized and maintained by a sovereign state, with their members identifiable by a distinct military uniform. They may consist of one or more military branches such as an army, navy, air force, space force, marines, or coast guard. The main task of a military is usually defined as defence of their state and its interests against external armed threats. In broad usage, the terms "armed forces" and "military" are often synonymous, although in technical usage a distinction is sometimes made in which a country's armed forces may include other paramilitary forces such as armed police. Beyond warfare, the military may be employed in additional sanctioned and non-sanctioned functions within the state, including internal security threats, crowd control, promotion of political agendas, emergency services and reconstruction, pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emergency Rocket Communications System
The Emergency Rocket Communications System (ERCS) was designed to provide a reliable and survivable emergency communications method for the United States National Command Authority, using a UHF repeater placed atop a Blue Scout rocket or Minuteman II intercontinental ballistic missile. ERCS was deactivated as a communication means when President George H.W. Bush issued a message to stand down SIOP-committed bombers and Minuteman IIs on 27 September 1991. Headquarters SAC was given approval by the Joint Chiefs of Staff to deactivate the 494L payloads beginning 1 October 1992. However, Headquarters SAC believed it was inefficient and unnecessary to support ERCS past fiscal year 1991, and kept the accelerated deactivation schedule. Mission The mission of the Emergency Rocket Communications System was to provide assured communication to United States strategic forces in the event of a nuclear attack. ERCS was a rocket or missile that carried a UHF transmitter as a payload ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minimum Essential Emergency Communications Network
The Minimum Essential Emergency Communications Network (MEECN) is a network of systems providing uninterrupted communications throughout the pre-, trans-, and post-nuclear warfare environment. At minimum, MEECN is designed to provide a one-way flow of information to activate nuclear forces during severe jamming and a post-nuclear environment. Components As of 1994, MEECN consists of various programs: Miniature Receive Terminals (MRTs) for nuclear bombers, High Power Transmit Sets (HPTS) for E-4B aircraft, Dual Frequency MEECN receivers (DFMRs) for ICBM Launch Control Centers. Ground Element MEECN System (GEMS) The GEMS program, short for Ground Element Minimum Essential Emergency Communications Network, is intended to replace deprecated communications facilities. This system features improved infrastructure for alerting aircrew, and maintaining communications in the event of nuclear conflict. Notable elements include updated Extremely High Frequency (EHF) communications satellites ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Wave Emergency Network
The Ground Wave Emergency Network (GWEN) was a US Air Force command and control communications system, deployed briefly between 1992 and 1994, intended for use by the United States government to facilitate military communications before, during and after a nuclear war. Specifically, the GWEN network was intended to survive the effects of an electromagnetic pulse from a high-altitude nuclear explosion and ensure that the United States President or their survivors could issue a launch order to Strategic Air Command bombers by radio. The New York Times, 12 September 1988 In accordance with the Joint Electronics Type Designation System (JETDS), the "''AN/URC-117''" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Post Attack Command And Control System
Post, POST, or posting may refer to: Postal services * Mail, the postal system, especially in Commonwealth of Nations countries **An Post, the Irish national postal service **Canada Post, Canadian postal service **Deutsche Post, German postal service **Iraqi Post, Iraqi postal service **Russian Post, Russian postal service **Hotel post, a service formerly offered by remote Swiss hotels for the carriage of mail to the nearest official post office **United States Postal Service or USPS **Parcel post, a postal service for mail that is heavier than ordinary letters Work * Post, a job or occupation Newspaper * ''The Manica Post'' Regional newspaper in Manicaland province, Zimbabwe * ''The Rakyat Post'' Malaysian online daily newspaper * ''Bangkok Post'' English language newspaper in Thailand Architecture and structures *Lamppost, a raised source of light on the edge of a road *Post (structural), timber framing *Post and lintel, a building system * Scratch post * Steel fence pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Survivable Low Frequency Communications System
The AN/FRC-117 Survivable Low Frequency Communications System (SLFCS) was a communications system designed to be able to operate, albeit at low data transfer rates, during and after a nuclear attack. The system used both very low frequency (VLF), and low frequency (LF) radio bands. Mission SLFCS was used for United States nuclear forces' command and control communications for Emergency Action Message dissemination and force direction. Single channel, receive only capability was provided at ICBM launch control centers. The single channel operated between 14 kHz and 60 kHz to receive commands from remotely located Combat Operations Center – Transmit/Receive (T/R) sites; this low frequency range is only slightly affected by nuclear blasts. For example, the Silver Creek site typically transmitted at 34.5 kHz. The transmitter could be tuned to any designated frequency in the above mentioned range. Receivers could receive down to 14.0 kHz. SLFCS' primary a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thule Air Base
Pituffik Space Base ( ; ; ), formerly Thule Air Base (), is a United States Space Force base located on the northwest coast of Greenland in the Kingdom of Denmark under a defense agreement between Denmark and the United States. 150 United States guardians serve there, after the United States significantly reduced its presence from 6000 personnel during the Cold War. Denmark was a founding member of NATO in 1949, and the 1951 Greenland Defense Agreement allowed the United States to operate the base under a NATO framework, as long as both Denmark and the United States remain NATO members. Under the agreement, the Danish national flag must be flown at the base to recognize that the base is on Danish territory, but the United States is allowed to fly its own flag alongside the Danish flag on the facilities it operates. It is the northernmost installation of the U.S. Armed Forces, north of the Arctic Circle and from the North Pole. Pituffik's Arctic environment includes icebergs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Point Barrow
Point Barrow or Nuvuk is a headland on the Arctic coast in the U.S. state of Alaska, northeast of Utqiagvik (formerly Barrow). It is the northernmost point of all the territory of the United States, at , south of the North Pole. (The northernmost point on the North American mainland, Murchison Promontory in Canada, is farther north.) Geography Point Barrow is an important geographical landmark, marking the limit between two marginal seas of the Arctic Ocean, the Chukchi Sea to the west and the Beaufort Sea to the east. History Archaeological evidence indicates that Point Barrow was occupied by the ancestors of the Iñupiat for almost 1,000 years prior to the arrival of the first Europeans. Occupation continued into the 1940s. The headland is an important archaeological site, yielding burials and artifacts associated with the Thule culture, including uluit and bola. The waters off Point Barrow are on the bowhead whale migration route and it is surmised, that the site ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melville Air Station
Melville Air Station (ADC ID: N-24) was a General Surveillance Radar station. It was located on the summit of Dome Mountain, west of CFB Goose Bay, Newfoundland and Labrador. It was closed in 1988. History The site was established in 1953 as a General Surveillance Radar station, funded by the United States Air Force. It was used initially by the Northeast Air Command, which stationed the 641st Aircraft Control and Warning Squadron on the station on 1 November 1957. The station functioned as a Ground-Control Intercept (GCI) and warning station. As a GCI station, the squadron's role was to guide interceptor aircraft toward unidentified intruders picked up on the unit's radar scopes. It was equipped with the following radars: * Search Radar: AN/FPS-3C, AN/FPS-502, AN/FPS-20A, AN/FPS-87A, AN/FPS-93A, AN/CPS-6B * Height Radar: AN/TPS-502, AN/FPS-6B, AN/FPS-90 The station was reassigned to the USAF Air Defense Command on 1 April 1957, and was given designation "N-24". ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
