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 and/or britain:
“The militancy of men, through all the centuries, has drenched the world with blood, and for these deeds of horror and destruction men have been rewarded with monuments, with great songs and epics. The militancy of women has harmed no human life save the lives of those who fought the battle of righteousness. Time alone will reveal what reward will be allotted to women.”
—Emmeline Pankhurst (1858–1928)
“The only reason I might go to the funeral is to make absolutely sure that he’s dead.”
—“An Eminent Editor” Of Press Baron. Quoted in Anthony Sampson, Anatomy of Britain Today, ch. 9 (1965)