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The Whistler Group was an electronics company based in Bentonville, Arkansas, [1] best known for its radar detectors. Whistler also manufactured power inverters, GPS navigation devices, inspection cameras, LED flashlights, vehicle dashboard cameras, and scanner radios. [2] The company went out of business in 2024 without warning.
Radar transmission frequency spectrum of a trapezoid pulse profile Recent advances in signal processing techniques have made the use of pulse profiling or shaping more common. By shaping the pulse envelope before it is applied to the transmitting device, say to a cosine law or a trapezoid, the bandwidth can be limited at source, with less ...
In the radar receiver, the returning echoes are typically received by the antenna, amplified, down-converted to an intermediate frequency, and then passed through detector circuitry that extracts the envelope of the signal, known as the video signal. This video signal is proportional to the power of the received echo.
A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threaded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.
AN/APS-15 H2X 10 GHz/X band bombing and navigational radar nicknamed as Mickey (equivalent to 3 GHz frequency British H2S) by Philco for Boeing B-29 Superfortress Martin PBM-3C/5/5E/5S Mariner Boeing B-17 Flying Fortress Consolidated B-24 Liberator Consolidated PB4Y-2 Privateer and Lockheed PV-1 Ventura, unlike the British H2S radar; H2X could ...
Radar warning receiver (RWR) systems detect the radio emissions of radar systems. Their primary purpose is to issue a warning when a radar signal that might be a threat is detected, like a fighter aircraft's fire control radar. The warning can then be used, manually or automatically, to evade the detected threat.
Dodge David Morgan (January 15, 1932 – September 14, 2010) was an American sailor, businessman, publisher and "self-proclaimed contrarian." [1] He flew fighter jets in the U.S. Air Force in the early 1950s, worked as a newspaper reporter in Alaska, and became a millionaire by operating Controlonics, a company that manufactured Whistler radar detectors from 1971 to 1983.
Most of today's radar detectors detect signals across a variety of wavelength bands: usually X, K, and K a. In Europe the K u band is common as well. The past success of radar detectors was based on the fact that radio-wave beams can not be narrow-enough, so the detector usually senses stray and scattered radiation, giving the driver time to ...