radio spectrum

American  

noun

1. the portion of the electromagnetic spectrum that includes radio waves.

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radio spectrum British  

noun

1. the range of electromagnetic frequencies used in radio transmission, lying between 10 kilohertz and 300 000 megahertz

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Etymology

Origin of radio spectrum

First recorded in 1925–30

Example Sentences

See Examples For:

radio spectrum

Astronomers looking for evidence of intelligent life beyond Earth may have overlooked promising signals simply because they have concentrated on a relatively narrow portion of the radio spectrum.

From Science Daily ● Jul. 30, 2026

It also proposed giving telecoms operators longer radio spectrum licences to "increase predictability" and making them renewable by default.

From Barron's ● Jan. 21, 2026

Wireless carriers including Verizon and AT&T use a part of the radio spectrum called C-Band, which is close to frequencies used by radio altimeters, for their new 5G service.

From Seattle Times ● Jun. 30, 2023

The direct-to-mobile cell service that BlueWalker 3 and its successors aim to provide requires a much stronger beam and broader use of the radio spectrum than existing networks, sparking concern among radio astronomers.

From Science Magazine ● Nov. 13, 2022

The entire radio spectrum would be scanned to determine if there were inhabitants below, capable of operating electrical equipment.

From The Four-Faced Visitors of Ezekiel by Arthur W. Orton