Battle of Britain
During the Battle of Britain the Royal Air Force (RAF) deployed an Identification Friend or Foe (IFF) system codenamed "pipsqueak", a term also used for a small calibre German shell during World War I. RAF fighters had a clockwork mechanism that regulated the broadcast of a signal over an HF channel for fourteen seconds of every minute. Each Fighter Command sector had Huff-Duff receiving stations that would monitor the "pipsqueak" broadcasts and telephone the bearings back to the sector control rooms where they could be triangulated and the squadron's location plotted.
Read more about this topic: High-frequency Direction Finding (electronics)
Famous quotes containing the words battle of, battle and/or britain:
“Joshua fit de battle ob Jerico, Jerico, Jerico,
Joshua fit de battle ob Jerico,
An’ de walls come tumblin’ down.”
—Unknown. Joshua Fit De Battle of Jericho (l. 1–3)
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—Benito Mussolini (1883–1945)
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—Amos Oz (b. 1939)