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

Instead, a powerful radio beam could be used for military purposes or might be generated to push a light sail and launch a massive cargo close to the speed of light.

From Scientific American • Jun. 24, 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

The great Transcontinental express had come to the field, following the radio beam, and now it was circling the field with its instruments set on the automatic signal for an emergency pilot.

From The Black Star Passes by Campbell, John Wood