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Index SCR-270

The SCR-270 (Signal Corps Radio model 270) was one of the first operational early-warning radars. [1]

80 relations: Airliner, Amplifier, AN/CPS-4 Radar, Attack on Pearl Harbor, Aurora, Baltimore, Bataan, Battle of Britain, Battle of Midway, Boeing B-17 Flying Fortress, Cathode ray tube, Cavity magnetron, Chain Home, CXAM radar, Dipole, Early-warning radar, Far East Air Force (United States), Fleet problem, Fort Amador, Fort Hancock, New Jersey, Fort Monmouth, Fort Shafter, Fort Sherman, Gordon P. Saville, Ground-controlled interception, Gun laying, Haleiwa, Hawaii, Hawaii, Henry H. Arnold, Hugh Dowding, Identification friend or foe, Infrared, Intermediate frequency, Ka'ala, Kermit Tyler, List of U.S. military vehicles by supply catalog designation, List of U.S. Signal Corps vehicles, Lower New York Bay, Martin B-10, Microwave, Midway Atoll, Mitchel Air Force Base, National Electronics Museum, National Research Council (Canada), Nature (journal), Naval Base Cavite, New Jersey, Normandy landings, Oahu, Opana Radar Site, ..., Oscillation, Ottawa, Panama Canal, Panama Canal Zone, Paul E. Watson, Phase shift module, Plan position indicator, Radar display, RCA, Robert Watson-Watt, Royal Air Force, Sandy Hook, SCR-268 radar, Secondary emission, Signal Corps (United States Army), Signal Corps Radio, Spark gap, Stub (electronics), Superheterodyne receiver, Tizard Mission, United States, United States Army, United States Army Air Corps, United States Navy, University of Saskatchewan, Walter Short, Würzburg radar, Westinghouse Electric Corporation, World War II, 4th Marine Regiment (United States). Expand index (30 more) »


An airliner is a type of aircraft for transporting passengers and air cargo.

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An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the power of a signal (a time-varying voltage or current).

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AN/CPS-4 Radar

The AN/CPS-4 Radar was a medium-range height-finding radar used by the United States Air Force Air Defense Command.

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Attack on Pearl Harbor

The attack on Pearl Harbor was a surprise military strike by the Imperial Japanese Navy Air Service against the United States naval base at Pearl Harbor, Hawaii Territory, on the morning of December 7, 1941.

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An aurora (plural: auroras or aurorae), sometimes referred to as polar lights, northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in the Earth's sky, predominantly seen in the high-latitude regions (around the Arctic and Antarctic).

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Baltimore is the largest city in the U.S. state of Maryland, and the 30th-most populous city in the United States.

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Bataan (Lalawigan ng Bataan; Lalawigan ning Bataan) is a province situated in the Central Luzon region of the Philippines.

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Battle of Britain

The Battle of Britain (Luftschlacht um England, literally "The Air Battle for England") was a military campaign of the Second World War, in which the Royal Air Force (RAF) defended the United Kingdom (UK) against large-scale attacks by Nazi Germany's air force, the Luftwaffe.

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Battle of Midway

The Battle of Midway was a decisive naval battle in the Pacific Theater of World War II which occurred between 4 and 7 June 1942, only six months after Japan's attack on Pearl Harbor and one month after the Battle of the Coral Sea.

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Boeing B-17 Flying Fortress

The Boeing B-17 Flying Fortress is a four-engine heavy bomber developed in the 1930s for the United States Army Air Corps (USAAC).

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Cathode ray tube

The cathode ray tube (CRT) is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images.

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Cavity magnetron

The cavity magnetron is a high-powered vacuum tube that generates microwaves using the interaction of a stream of electrons with a magnetic field while moving past a series of open metal cavities (cavity resonators).

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Chain Home

Chain Home, or CH for short, was the codename for the ring of coastal Early Warning radar stations built by the Royal Air Force (RAF) before and during the Second World War to detect and track aircraft.

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CXAM radar

The CXAM radar system was the first production radar system deployed on United States Navy ships, operating in the mid-high VHF frequency band of 200 MHz.

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In electromagnetism, there are two kinds of dipoles.

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Early-warning radar

An early-warning radar is any radar system used primarily for the long-range detection of its targets, i.e., allowing defences to be alerted as early as possible before the intruder reaches its target, giving the air defences the maximum time in which to operate.

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Far East Air Force (United States)

The Far East Air Force (FEAF) was the military aviation organization of the United States Army in the Philippines just prior to and at the beginning of World War II.

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Fleet problem

Fleet problem is the term used by the United States Navy to describe each of 27 naval exercises.

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Fort Amador

Fort Amador (Fuerte Amador) and Fort Grant were former United States Army bases built to protect the Pacific (southern) end of the Panama Canal at Panama Bay.

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Fort Hancock, New Jersey

Fort Hancock is a former United States Army fort at Sandy Hook in Middletown Township New Jersey.

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Fort Monmouth

Fort Monmouth is a former installation of the Department of the Army in Monmouth County, New Jersey.

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Fort Shafter

Fort Shafter is in Honolulu CDP, City and County of Honolulu, Hawai‘i, extending up the interfluve (ridgeline) between Kalihi and Moanalua valleys, as well as onto the coastal plain (as Shafter Flats) at Māpunapuna.

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Fort Sherman

Fort Sherman is a former United States Army base in Panama, located on Toro Point at the Caribbean (northern) end of the Panama Canal, on the western bank of the Canal directly opposite Colón (which is on the eastern bank).

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Gordon P. Saville

Gordon Philip Saville (September 14, 1902 – January 31, 1984).

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Ground-controlled interception

Ground-controlled interception (GCI) is an air defence tactic whereby one or more radar stations or other observational stations are linked to a command communications centre which guides interceptor aircraft to an airborne target.

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Gun laying

Gun laying is the process of aiming an artillery piece, such as a gun, howitzer or mortar, on land or at sea, against surface or air targets.

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Haleiwa, Hawaii

Haleiwa is a North Shore community and census-designated place (CDP) in the Waialua District of the island of Ookinaahu, City and County of Honolulu.

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Hawaii (Hawaii) is the 50th and most recent state to have joined the United States, having received statehood on August 21, 1959.

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Henry H. Arnold

Henry Harley "Hap" Arnold (June 25, 1886 – January 15, 1950) was an American general officer holding the grades of General of the Army and General of the Air Force.

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Hugh Dowding

Air Chief Marshal Hugh Caswall Tremenheere Dowding, 1st Baron Dowding, (24 April 1882 – 15 February 1970) was an officer in the Royal Air Force.

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Identification friend or foe

Identification, friend or foe (IFF) is an identification system designed for command and control.

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Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.

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Intermediate frequency

In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception.

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Kaala or Mount Kaala or (pronounced in Hawaiian) is the highest mountain on the island of Oahu, at.

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Kermit Tyler

Kermit Arthur Tyler (April 13, 1913 – January 23, 2010) was an American Air Force officer.

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List of U.S. military vehicles by supply catalog designation

This is the G-series List of U.S. military vehicles by supply catalog designation. The U.S. Army Ordnance Corps Supply Catalog used an alpha-numeric system, based on a Standard Nomenclature List from about the mid-1920s to about 1958, in which the G-series numbers were designated to represent the various U.S. military vehicles and directly related materiel.

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List of U.S. Signal Corps vehicles

This is a list of vehicles used by the U.S. Army Signal Corps from World War I through World War II.

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Lower New York Bay

Lower New York Bay is a section of New York Bay south of the Narrows, the relatively narrow strait between the shores of Staten Island and Brooklyn.

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Martin B-10

The Martin B-10 was the first all-metal monoplane bomber to be regularly used by the United States Army Air Corps, entering service in June 1934.

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Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; with frequencies between and.

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Midway Atoll

Midway Atoll (also called Midway Island and Midway Islands; Hawaiian: Pihemanu Kauihelani) is a atoll in the North Pacific Ocean at.

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Mitchel Air Force Base

Mitchel Air Force Base also known as Mitchel Field, was a United States Air Force base located on the Hempstead Plains of Long Island, New York, United States.

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National Electronics Museum

The National Electronics Museum, located in Linthicum, Maryland, displays the history of the United States defense electronics.

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National Research Council (Canada)

The National Research Council (NRC, Conseil national de recherches Canada) is the primary national research and technology organization (RTO) of the Government of Canada, in science and technology research and development.

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Nature (journal)

Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.

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Naval Base Cavite

Naval Station Pascual Ledesma, also known as Cavite Naval Base or Cavite Navy Yard, is a military installation of the Philippine Navy in Cavite City in the Province of Cavite.

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New Jersey

New Jersey is a state in the Mid-Atlantic region of the Northeastern United States.

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Normandy landings

The Normandy landings were the landing operations on Tuesday, 6 June 1944 of the Allied invasion of Normandy in Operation Overlord during World War II.

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O‘ahu (often anglicized Oahu) known as "The Gathering Place" is the third-largest of the Hawaiian Islands.

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Opana Radar Site

The Opana Radar Site is a National Historic Landmark and IEEE Milestone that commemorates the first operational use of radar by the United States in wartime, during the attack on Pearl Harbor.

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Oscillation is the repetitive variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states.

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Ottawa is the capital city of Canada.

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Panama Canal

The Panama Canal (Canal de Panamá) is an artificial waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean.

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Panama Canal Zone

The Panama Canal Zone (Zona del Canal de Panamá) was an unincorporated territory of the United States from 1903 to 1979, centered on the Panama Canal and surrounded by the Republic of Panama.

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Paul E. Watson

Paul E. Watson (died 1943) was a pioneer researcher in the development of radar.

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Phase shift module

A phase shift module is a microwave network module which provides a controllable phase shift of the RF signal.

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Plan position indicator

The plan position indicator (PPI), is the most common type of radar display.

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Radar display

A radar display is an electronic device to present radar data to the operator.

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The RCA Corporation was a major American electronics company, which was founded as the Radio Corporation of America in 1919.

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Robert Watson-Watt

Sir Robert Alexander Watson-Watt, KCB, FRS, FRAeS (13 April 1892 – 5 December 1973) was a Scottish pioneer of radio direction finding and radar technology.

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Royal Air Force

The Royal Air Force (RAF) is the United Kingdom's aerial warfare force.

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Sandy Hook

Sandy Hook is a barrier spit in Middletown Township, Monmouth County, New Jersey, United States.

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SCR-268 radar

The SCR-268 (for Signal Corps Radio no. 268) was the US Army's first radar system.

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Secondary emission

Secondary emission in physics is a phenomenon where primary incident particles of sufficient energy, when hitting a surface or passing through some material, induce the emission of secondary particles.

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Signal Corps (United States Army)

The United States Army Signal Corps (USASC) develops, tests, provides, and manages communications and information systems support for the command and control of combined arms forces.

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Signal Corps Radio

Signal Corps Radios were U.S. Army military communications components that comprised "sets".

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Spark gap

A spark gap consists of an arrangement of two conducting electrodes separated by a gap usually filled with a gas such as air, designed to allow an electric spark to pass between the conductors.

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Stub (electronics)

In microwave and radio-frequency engineering, a stub or resonant stub is a length of transmission line or waveguide that is connected at one end only.

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Superheterodyne receiver

A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency.

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Tizard Mission

The Tizard Mission, officially the British Technical and Scientific Mission, was a British delegation that visited the United States during the Second World War in order to obtain the industrial resources to exploit the military potential of the research and development (R&D) work completed by the UK up to the beginning of World War II, but that Britain itself could not exploit due to the immediate requirements of war-related production.

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United States

The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.

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United States Army

The United States Army (USA) is the land warfare service branch of the United States Armed Forces.

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United States Army Air Corps

The United States Army Air Corps (USAAC) was the aerial warfare service of the United States of America between 1926 and 1941.

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United States Navy

The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States.

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University of Saskatchewan

The University of Saskatchewan (U of S) is a Canadian public research university, founded on March 19, 1907, and located on the east side of the South Saskatchewan River in Saskatoon, Saskatchewan, Canada.

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Walter Short

Walter Campbell Short (March 30, 1880 – September 3, 1949) was a lieutenant general in the United States Army and the U.S. military commander responsible for the defense of U.S. military installations in Hawaii at the time of the Japanese attack on Pearl Harbor on December 7, 1941.

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Würzburg radar

The low-UHF band Würzburg radar was the primary ground-based gun laying radar for the Luftwaffe and the Wehrmacht Heer (German Army) during World War II.

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Westinghouse Electric Corporation

The Westinghouse Electric Corporation was an American manufacturing company.

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World War II

World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.

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4th Marine Regiment (United States)

The 4th Marine Regiment is an infantry regiment of the United States Marine Corps.

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[1] https://en.wikipedia.org/wiki/SCR-270

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