Adcock Range: National low-frequency radio navigation system (c.1930-c.1950) replaced by an omnirange (VOR) system. It consisted of four segmented quadrants broadcasting Morse Code 'A' (dot-dash) and 'N' (dash-dot) signals in opposing quadrants so that pilots could orient their position relative to a 'beam' broadcasting a steady tone, and a Morse Code station identifier. Using a 'build-and-fade' technique, a pilot could (ideally) pinpoint his location by the strength or weakness of a signal. Read about it here.

 

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Adcock Range: National low-frequency radio navigation system (c.1930-c.1950) replaced by an omnirange (VOR) system. It consisted of four segmented quadrants broadcasting Morse Code 'A' (dot-dash) and 'N' . . . View Full Definition

Range Finders (Alley Sights): 5 targets, each 1X7 inch, 6½ inches apart; forming a 2 foot long arrowhead centered 20 feet beyond the foul-line installed in many candlepin centers.

Range Finders: Markers in the lane that help the bowler determine the target line. There are two sets of such markers: ten dots located seven feet past the foul line and seven arrows arranged in a triangle . . . View Full Definition

Range Bin: Discrete element along a single radial of radar data at which the received signals are sampled. Range bins from poldirad data are spaced at multipes from 150 m intervals. See also sample volume.