wireless direction finding
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Direction finding — (DF) refers to the establishment of the direction from which a received signal was transmitted. This can refer to radio or other forms of wireless communication. By combining the direction information from two or more suitably spaced receivers… … Wikipedia
Iceland during World War II — Initial British targets for the 1940 Invasion of Iceland: Reykjavík along with its harbour and seaplane landing site (Vatnagarðar), nearby landing grounds at Sandskeið and Kaldaðarnes to the east, the nearby anchorage at Hvalfjörður to the north … Wikipedia
Irish neutrality during World War II — The policy of Irish neutrality during World War II was adopted by Dáil Éireann (the Parliament of Ireland) at the instigation of Éamon de Valera, its Taoiseach (Prime Minister) upon the outbreak of hostilities in Europe and maintained throughout… … Wikipedia
RMS Empress of France (1914) — RMS Empress of France was an ocean liner built in 1913 1914 [The disambiguation date used in this article s title is not the year in which the hull is launched, but rather the year of the vessel s sea trial or maiden voyage.] by William Beardmore … Wikipedia
Winchester Castle (1930) — Winchester Castle p1 … Deutsch Wikipedia
HFWDF — High Frequency Wireless Direction Finding (Anglais. Communément surnommé Huff Duff par les Britanniques et les Américains. En franc., approximativement = Détecteur directionnel d émissions radio à hautes fréquences). Appareil permettant le… … Sigles et Acronymes francais
Signals intelligence in modern history — This article is a subset article of the article Signals intelligence, which addresses the unifying conceptual and technical factors and common technologies in this intelligence discipline. This article deals with signals intelligence in the… … Wikipedia
Room 40 — Admiralty Ripley building In Whitehall, built in 1726 and still used for naval board meetings. Room 40 was in the northern section of the first floor, on the same corridor as the boardroom and First Sea Lord s office. In the history of… … Wikipedia
History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… … Wikipedia
Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… … Wikipedia
Amelia Earhart — Earhart redirects here. For the asteroid, see 3895 Earhart. Amelia Earhart Amelia Earhart … Wikipedia
