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These are reserved for navigational aids such as VOR beacons, and precision approach systems such as ILS localizers. [2] [3] As of 2012, most countries divide the upper 19 MHz into 760 channels for amplitude modulation voice transmissions, on frequencies from 118 to 136.975 MHz, in steps of 25 kHz. In Europe, it is becoming common to further ...
The aircraft emergency frequency (also known in the USA as Guard) is a frequency used on the aircraft band reserved for emergency communications for aircraft in distress.The frequencies are 121.5 MHz for civilian, also known as International Air Distress (IAD), International Aeronautical Emergency Frequency, [1] or VHF Guard, [1] and 243.0 MHz—the second harmonic of VHF guard—for military ...
The Akaflieg Darmstadt D-28 Windspiel (English: Italian Greyhound) was a single-seat, high-performance sailplane designed in Germany in the early 1930s. Intended to exploit a growing understanding of thermal soaring, it was small and manoeuvrable, with a 12 m span; silk-covered for lightness, it weighed less (empty) than its pilots.
The antenna covers an elevation of 40° from the horizon with two feedhorns which create two stacked overlapping vertical lobes 4° apart; the lower beam transmits the outgoing pulse and is used to detect distant targets near the horizon, while the upper receive-only beam detects closer higher elevation aircraft with less ground clutter.
Development of the 12.8 cm Flak 40 began in 1936, with the contract being awarded to Rheinmetall Borsig.The first prototype gun was delivered for testing in late 1937 and completed testing successfully.
The weapons, vehicles and equipment used in the Russo-Ukrainian War, from 2014 to the present include the following.The war involves the Armed Forces of Ukraine, the Armed Forces of Russia, the Korean People's Army, and a number of national guard and volunteer groups.
The Airbus C295 (previously CASA C-295) is a medium tactical transport aircraft that was designed and initially manufactured by the Spanish aerospace company CASA, which is now part of the European multinational Airbus Defence and Space division.
The HAL Tejas (Sanskrit: तेजस, ISO: Tējasa, lit. ' Radiance ') is an Indian single-engine, delta wing, multirole [9] combat aircraft designed by the Aeronautical Development Agency (ADA) and manufactured by Hindustan Aeronautics Limited (HAL) for the Indian Air Force (IAF) and Indian Navy.