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TRC-97
The AN/TRC-97 Radio Set, or TRC-97, is a radio set that has 12 multiplex channels (later expanded to 24 channels and 16 telegraph channels connected to an analog radio. The radio set is a mobile terminal that can transmit up to straight line-of-sight at up to 1 watt, using a traveling wave tube amplifier, or in tropospheric scatter at up to 1 kilowatt, using a tunable klystron amplifier, at a frequency range of 4.4 to 5 gigahertz and 1.2 to 2.2 gigahertz. The set has been manufactured by RCA, Camden, N.J. Features The TRC-97 can be connected to one of three mobile antennas, depending on the distance and signal strength needed. One such antenna that can be used with the TRC-97 is the MRT-2 parabolic tropospheric antenna, measuring across, which is designed to cover distances of up to . Another antenna was a simple feed horn type mounted on a pole. The third is a set of parabolic dishes on (pictured in the photo). These antennas are transported on trailer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TRC-97
The AN/TRC-97 Radio Set, or TRC-97, is a radio set that has 12 multiplex channels (later expanded to 24 channels and 16 telegraph channels connected to an analog radio. The radio set is a mobile terminal that can transmit up to straight line-of-sight at up to 1 watt, using a traveling wave tube amplifier, or in tropospheric scatter at up to 1 kilowatt, using a tunable klystron amplifier, at a frequency range of 4.4 to 5 gigahertz and 1.2 to 2.2 gigahertz. The set has been manufactured by RCA, Camden, N.J. Features The TRC-97 can be connected to one of three mobile antennas, depending on the distance and signal strength needed. One such antenna that can be used with the TRC-97 is the MRT-2 parabolic tropospheric antenna, measuring across, which is designed to cover distances of up to . Another antenna was a simple feed horn type mounted on a pole. The third is a set of parabolic dishes on (pictured in the photo). These antennas are transported on trailer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
601st Tactical Control Wing
The 601st Air Expeditionary Wing is a provisional United States Air Force organization. It was last active as the 601st Air Base Wing with the Seventeenth Air Force at Sembach Air Base, Germany, where it was inactivated on 31 March 1995. The wing was first activated as the 601st Tactical Control Wing at Sembach in July 1968, when it replaced the 601st Tactical Control Group as the headquarters for Seventeenth Air Force's tactical control units and the 603d Air Base Wing as the host organization for Sembach. For most of its existence, the unit controlled elements of the Tactical Air Control SystemThe Tactical Air Control (System 407L) was developed in the 1960s by the United States Air Force as a mobile system to provide semi-automatic command and control of forces and to interface with Army and Naval Forces. It incorporated Aircraft Control and Warning, Tactical Air Support, Air Traffic Control and Command Communications subsystems. Study of the U.S.A.F. Tactical Control Sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sembach Air Base
Sembach Kaserne is a United States Army post in Donnersbergkreis, Germany, near Kaiserslautern, and is about 19 miles (30 km) east of Ramstein Air Base. Prior to 2010, the installation was a United States Air Force installation and prior to 1995 it was a U.S. military airfield known as Sembach Air Base. Named for Sembach, it is the home of the 18th Military Police Brigade, 30th Medical Brigade, and United States Army Corrections Facility-Europe. During the Cold War, the installation housed a variety of U.S. tactical reconnaissance, close air support and tactical air control units as a front line NATO air base. History Origins Sembach Kaserne's origins date back to 1919 after World War I when French occupation troops used the eastern half of the present flightline as an airfield. The French facilities consisted of 10 sheet-iron barracks and 26 wooden hangars with canvas coverings. As part of the general withdrawal of French occupation forces from the left bank of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropospheric Scatter
Tropospheric scatter, also known as troposcatter, is a method of communicating with microwave radio signals over considerable distances – often up to and further depending on frequency of operation, equipment type, terrain, and climate factors. This method of propagation uses the tropospheric scatter phenomenon, where radio waves at Ultra high frequency, UHF and Super high frequency, SHF Frequency, frequencies are randomly scattered as they pass through the upper layers of the troposphere. Radio signals are transmitted in a narrow beam aimed just above the horizon in the direction of the receiver station. As the signals pass through the troposphere, some of the energy is scattered back toward the Earth, allowing the receiver station to pick up the signal. Normally, signals in the microwave frequency range travel in straight lines, and so are limited to ''Line-of-sight propagation, line-of-sight'' applications, in which the receiver can be 'seen' by the transmitter. Communicat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solid State (electronics)
Solid-state electronics means semiconductor electronics: electronic equipment using semiconductor devices such as transistors, diodes and integrated circuits (ICs). The term is also used as an adjective for devices in which semiconductor electronics that have no moving parts replace devices with moving parts, such as the solid-state relay in which transistor switches are used in place of a moving-arm electromechanical relay, or the solid-state drive (SSD) a type of semiconductor memory used in computers to replace hard disk drives, which store data on a rotating disk. History The term "solid-state" became popular at the beginning of the semiconductor era in the 1960s to distinguish this new technology based on the transistor, in which the electronic action of devices occurred in a solid state, from previous electronic equipment that used vacuum tubes, in which the electronic action occurred in a gaseous state. A semiconductor device works by controlling an electric current c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
602nd Tactical Control Squadron
6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number. In mathematics Six is the smallest positive integer which is neither a square number nor a prime number; it is the second smallest composite number, behind 4; its proper divisors are , and . Since 6 equals the sum of its proper divisors, it is a perfect number; 6 is the smallest of the perfect numbers. It is also the smallest Granville number, or \mathcal-perfect number. As a perfect number: *6 is related to the Mersenne prime 3, since . (The next perfect number is 28 (number), 28.) *6 is the only even perfect number that is not the sum of successive odd cubes. *6 is the root of the 6-aliquot tree, and is itself the aliquot sum of only one other number; the square number, . Six is the only number that is both the sum and the product of three consecutive positive numbers. Unrelated to 6's being a perfect number, a Golomb ruler of length 6 is a "perfect ruler". Si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaiserslautern
Kaiserslautern (; Palatinate German: ''Lautre'') is a city in southwest Germany, located in the state of Rhineland-Palatinate at the edge of the Palatinate Forest. The historic centre dates to the 9th century. It is from Paris, from Frankfurt am Main, 666 kilometers (414 miles) from Berlin, and from Luxembourg. Kaiserslautern is home to about 100,000 people. Additionally, approximately 45,000 NATO military personnel are based in the city and its surrounding district ('' Landkreis Kaiserslautern''), contributing approximately US$1 billion annually to the local economy. History and demographics Prehistoric settlement in the area of what is now Kaiserslautern has been traced to at least 800 BC. Some 2,500-year-old Celtic tombs were uncovered at Miesau, a town about west of Kaiserslautern. The recovered relics are now in the Museum for Palatinate History at Speyer. Medieval period Kaiserslautern received its name from the favourite hunting retreat of Holy Roman Emperor F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teleprinter
A teleprinter (teletypewriter, teletype or TTY) is an electromechanical device that can be used to send and receive typed messages through various communications channels, in both point-to-point and point-to-multipoint configurations. Initially they were used in telegraphy, which developed in the late 1830s and 1840s as the first use of electrical engineering, though teleprinters were not used for telegraphy until 1887 at the earliest. The machines were adapted to provide a user interface to early mainframe computers and minicomputers, sending typed data to the computer and printing the response. Some models could also be used to create punched tape for data storage (either from typed input or from data received from a remote source) and to read back such tape for local printing or transmission. Teleprinters could use a variety of different communication media. These included a simple pair of wires; dedicated non-switched telephone circuits (leased lines); switched network ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vietnam War
The Vietnam War (also known by #Names, other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vietnam and South Vietnam. The north was supported by the Soviet Union, China, and other communist states, while the south was United States in the Vietnam War, supported by the United States and other anti-communism, anti-communist Free World Military Forces, allies. The war is widely considered to be a Cold War-era proxy war. It lasted almost 20 years, with direct U.S. involvement ending in 1973. The conflict also spilled over into neighboring states, exacerbating the Laotian Civil War and the Cambodian Civil War, which ended with all three countries becoming communist states by 1975. After the French 1954 Geneva Conference, military withdrawal from Indochina in 1954 – following their defeat in the First Indochina War – the Viet Minh to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Members Of The 225th Combat Communications Squadron And A TRAC-170 Wideband System
Member may refer to: * Military jury A United States military "jury" (or "members", in military parlance) serves a function similar to an American civilian jury, but with several notable differences. Only a general court-martial (which may impose any sentences, from dishonorable disch ..., referred to as "Members" in military jargon * Element (mathematics), an object that belongs to a mathematical set * In object-oriented programming, a member of a class ** Field (computer science), entries in a database ** Member variable, a variable that is associated with a specific object * Limb (anatomy), an appendage of the human or animal body ** Euphemism for penis * Structural component of a truss, connected by nodes * User (computing), a person making use of a computing service, especially on the Internet * Member (geology), a component of a geological formation * Member of parliament * The Members, a British punk rock band * Meronymy, a semantic relationship in linguistics * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modulation
In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the ''carrier signal'', with a separate signal called the ''modulation signal'' that typically contains information to be transmitted. For example, the modulation signal might be an audio signal representing sound from a microphone, a video signal representing moving images from a video camera, or a digital signal representing a sequence of binary digits, a bitstream from a computer. The carrier is higher in frequency than the modulation signal. In radio communication the modulated carrier is transmitted through space as a radio wave to a radio receiver. Another purpose is to transmit multiple channels of information through a single communication medium, using frequency-division multiplexing (FDM). For example in cable television which uses FDM, many carrier signals, each modulated with a different television channel, are transported through a sing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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