radio beam

American  

noun

1. beam.

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radio beam British  

noun

1. Sometimes shortened to: beam.  a narrow beam of radio signals transmitted by a radio or radar beacon, radio telescope, or some other directional aerial, used for communications, navigation, etc

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Etymology

Origin of radio beam

First recorded in 1920–25

Example Sentences

Those fields power pulsars, which sweep a radio beam past Earth at regular intervals as they spin.

From Science Magazine • Apr. 8, 2021

Connery answers diffidently: “A little. It’s throwing the gyroscopic controls of a guided missile off balance with a … a radio beam or something, isn’t it?”

From New York Times • Oct. 31, 2020

The effect is to cause both a redshift and a blueshift, widening the spread of frequencies in the radio beam.

From Textbooks • Oct. 13, 2016

This beacon, located on Sisters Island in Icy Strait, sends out a radio beam along a set course.

From Washington Times • Sep. 10, 2016

They'll have to come in on the radio beam.

From The Giants From Outer Space by Reynard, Geoff St.