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That is, HAARP stimulates plasma waves, which creates radio waves that are received on the ground. The spectrum depends on charge density, ion mass, magnetic field strength, etc. [16] Gyro frequency heating research; Spread F observations (blurring of ionospheric echoes of radio waves due to irregularities in electron density in the F layer)
NOAA Weather Radio (NWR; also known as NOAA Weather Radio All Hazards) is an automated 24-hour network of more than 1,000 radio stations [20] in the United States that broadcast weather information directly from a nearby National Weather Service office. A complete broadcast cycle lasts about 3 to 8 minutes long, featuring weather forecasts and ...
The radio's theory of operation is based on the principle of the Wadley Loop and was one of the first radios marketed by Tandy Corporation to have a digital frequency display. The DX-300 was succeeded by the improved DX-302 in 1980. Picture of the front of a Realistic DX 300 HF receiver in operation
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Weatheradio Canada (French: Radiométéo Canada) is a Canadian weather radio network owned and operated by Environment and Climate Change Canada's Meteorological Service of Canada division. It is one of the two weather radio systems across North America along with the NOAA Weather Radio, and is an official partner of the National Weather Service.
LPD433 (low power device 433 MHz) is a UHF band in which license free communication devices are allowed to operate in some regions. The frequencies correspond with the ITU region 1 ISM band of 433.050 MHz to 434.790 MHz.
AirHarp uses the Leap Motion USB motion sensor device to detect the finger movements of the player. [5] It then transmits that information to the computer software that Somers has developed, and the software interprets it as a pitch. The software then plays whatever pitch was struck with an artificial harp sound. The software also responds to ...
From July 1940, the British fitted the RAF Mk II AI (Airborne Interception) radar into Coastal Command aircraft for use as the Mk II "1 + 1 ⁄ 2-metre ASV". [2] The radar suffered from problems due to land clutter and inability to determine height, which caused its failure in night fighters but these were no handicap in this new role.