radio-beacon

radio beacon

noun
a radio station that sends a characteristic signal so as to enable ships or airplanes to determine their position or bearing by means of a radio compass.

Origin:
1915–20

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World English Dictionary
radio beacon
 
n
Sometimes shortened to: beacon a fixed radio transmitting station that broadcasts a characteristic signal by means of which a vessel or aircraft can determine its bearing or position

Collins English Dictionary - Complete & Unabridged 10th Edition
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