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Airborne Radio Relay
Airborne radio relay is a technique employing aircraft fitted with radio relay stations for the purpose of increasing the range, flexibility, or physical security of communications systems. The aircraft may be manned or unmanned aerial vehicles. Use in Vietnam One of the first uses of airborne radio relay was by the United States Army's 1st Cavalry Division in the Battle of Ia Drang during the Vietnam War, which employed the technique to improve communications with commanders at headquarters. The action of war had shifted to the borders of Laos and Cambodia, where the hilly terrain made the monetary and human cost of seizing and holding high ground, and airlifting and installing radio relay equipment prohibitive. In 1968, the Department of the Army provided four specially-equipped relay aircraft to the Division, which proved invaluable throughout the country, in particular, during the 1st Cavalry Division's relief of Khe Sanh in 1968. The use of airborne radio relay was a grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Relay
Radio stations that cannot communicate directly due to distance, terrain or other difficulties sometimes use an intermediate radio relay station to relay the signals. A radio relay receives weak signals and retransmits them, often in a different direction, as a stronger signal. Examples include airborne radio relay, microwave radio relay, and communications satellite. The American Radio Relay League was founded for this purpose but did not change its name when this became a less important part of its work. See also * Repeater * Transponder *Broadcast relay station A broadcast relay station, also known as a satellite station, relay transmitter, broadcast translator (U.S.), re-broadcaster (Canada), repeater ( two-way radio) or complementary station (Mexico), is a broadcast transmitter which repeats (or tr ... * Radio communications {{radio-comm-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Department Of The Army
The United States Department of the Army (DA) is one of the three military departments within the United States Department of Defense. The DA is the Federal government of the United States, federal government agency within which the United States Army (U.S.) is organized. It is led by the United States Secretary of the Army, secretary of the Army, a civilian official appointed by the president and confirmed by the United States Senate, Senate. The highest-ranking military officer in the department is the Chief of Staff of the United States Army, chief of staff of the Army, who is also a member of the Joint Chiefs of Staff. Other senior officials of the department are the United States Under Secretary of the Army, under secretary of the Army (principal deputy to the secretary) and the Vice Chief of Staff of the United States Army, vice chief of staff of the Army (principal deputy to the chief of staff.) The DA is a successor to the United States Department of War, Department of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battlefield Airborne Communications Node
The Battlefield Airborne Communications Node (BACN) is a United States Air Force (USAF) airborne communications Repeater, relay and Gateway (telecommunications), gateway system carried by the unmanned Northrop Grumman RQ-4 Global Hawk, EQ-4B and the manned Bombardier Global 6000, Bombardier E-11A aircraft. BACN enables Real-time computing, real-time information flow across the battlespace between similar and dissimilar Tactical Data Links, tactical data link and voice systems through relay, bridging, and data translation in Line-of-sight propagation, line-of-sight and Non-line-of-sight propagation, beyond-line-of-sight situations. Its ability to translate between dissimilar communications systems allows them to interoperability, interoperate without modification. Because of its flexible Military deployment, deployment options and ability to operate at high altitudes, BACN can enable air and surface forces to overcome communications difficulties caused by mountains, other rough t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beechcraft King Air
The Beechcraft King Air is a line of American utility aircraft produced by Beechcraft. The King Air line comprises a number of twin-turboprop models that have been divided into two families. The Model 90 and 100 series developed in the 1960s are known as King Airs, while the later T-tail Model 200 and 300 series were originally marketing, marketed as Beechcraft Super King Air, Super King Airs, with the name "Super" being dropped by Beechcraft in 1996 (although it is still often used to differentiate the 200 and 300 series King Airs from their smaller stablemates). The King Air was the first aircraft in its class and was produced continuously from 1964 to 2021. It outsold all of its turboprop competitors combined. It has recently faced competition from light jet aircraft such as the Embraer Phenom 100, Honda HA-420 HondaJet and Cessna Citation Mustang; as well as from newer turboprop aircraft including the Piaggio P180 Avanti, and single-engine Piper Malibu Meridian, Pilatus P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1st Signal Brigade (United States)
The 1st Signal Brigade ("First to Communicate")Special Unit Designations is a military communications brigade of the United States Army operationally controlled to the Eighth United States Army and administratively controlled to the 311th Signal Command in Fort Shafter, Hawaii, and located at Camp Humphreys in South Korea. History Vietnam War The 1st Signal Brigade was activated on 1 April 1966 in South Vietnam.Raines, p 371 The brigade's mission was to originate, install, operate, and maintain a complex communication system that fused tactical and strategic communications in Southeast Asia under a single, unified command. The formation of the brigade brought together three signal groups that were already in South Vietnam. At the peak of the Vietnam War the brigade consisted of more than 23,000 soldiers, in six Signal groups (including the 160th Signal Group), 22 signal battalions and several communications agencies, making the 1st Signal Brigade the largest signal unit in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Canada DHC-3 Otter
The de Havilland Canada DHC-3 Otter is a single-engined, high-wing, Propeller (aircraft), propeller-driven, short take-off and landing (STOL) aircraft developed by de Havilland Canada. It was conceived to be capable of performing the same roles as the earlier and highly successful De Havilland Canada DHC-2 Beaver, Beaver, including as a bush plane, while also being a larger aircraft. Design and development The rugged single-engined, high-wing, propeller-driven DHC-3 Otter was conceived in January 1951 by de Havilland Canada as a larger, more powerful version of its highly successful DHC2 Beaver STOL utility transport. Dubbed the "King Beaver" during design, it would be the veritable "one-ton truck" to the Beaver's "half-ton" role. The Otter received Canadian certification in November 1952 and entered production shortly thereafter. Using the same overall configuration as the Beaver, the new, much heavier design incorporated a longer fuselage, greater-span wing, and cruciform t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Air Force
The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its origins to 1 August 1907, as a part of the United States Army Signal Corps, the USAF was established by transfer of personnel from the Army Air Forces with the enactment of the National Security Act of 1947. It is the second youngest branch of the United States Armed Forces and the fourth in United States order of precedence, order of precedence. The United States Air Force articulates its core missions as air supremacy, intelligence, surveillance, target acquisition, and reconnaissance, global integrated intelligence, surveillance and reconnaissance, airlift, rapid global mobility, Strategic bombing, global strike, and command and control. The United States Department of the Air Force, Department of the Air Force, which serves as the USAF's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Havilland Canada DHC-4 Caribou
The de Havilland Canada DHC-4 Caribou (designated by the United States military as the CV-2 and later C-7 Caribou) is a Canadian specialized cargo aircraft with STOL, short takeoff and landing (STOL) capability. The Caribou was first flown in 1958 and although mainly retired from military operations, is still in use in small numbers as a rugged bush airplane. The design was further developed as the de Havilland Canada DHC-5 Buffalo, adding turboprop engines and other changes that further improved its short-field performance to the point where it competes with light aircraft even with a full load. Design and development The De Havilland Canada (DHC) company's third short takeoff and landing (STOL) design was a big increase in size compared to its earlier DHC Beaver and DHC Otter, and was the first DHC design powered by two engines. The Caribou was similar in concept in that it was designed as a rugged STOL utility aircraft. The Caribou was primarily a military tactical transp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khe Sanh
Khe Sanh () is the district capital of Hướng Hoá District, Quảng Trị Province, Vietnam, located 63 km west of Đông Hà. During the Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ..., the Khe Sanh Combat Base was located to the north of the city. The Battle of Khe Sanh took place there. The Khe Sanh Combat Base is a museum where relics of the war are exhibited. Most of the former base is now overgrown by wilderness or coffee and banana plants. Climate References Communes of Quảng Trị province District capitals in Vietnam Townships in Vietnam {{QuangTri-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambodia
Cambodia, officially the Kingdom of Cambodia, is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. It is bordered by Thailand to the northwest, Laos to the north, and Vietnam to the east, and has a coastline along the Gulf of Thailand in the southwest. It spans an area of , dominated by a low-lying plain and the confluence of the Mekong river and Tonlé Sap, Southeast Asia's largest lake. It is dominated by a tropical climate and is rich in biodiversity. Cambodia has a population of about 17 million people, the majority of which are ethnically Khmer people, Khmer. Its capital and most populous city is Phnom Penh, followed by Siem Reap and Battambang. In 802 AD, Jayavarman II declared himself king, uniting the warring Khmer princes of Chenla Kingdom, Chenla under the name "Kambuja".Chandler, David P. (1992) ''History of Cambodia''. Boulder, CO: Westview Press, . This marked the beginning of the Khmer Empire. The Indianised kingdom facilitated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
