call sign

American  

noun

1. call letters.

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call sign British  

noun

1. a group of letters and numbers identifying a radio transmitting station, esp an amateur radio station Compare call letters

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Etymology

Origin of call sign

First recorded in 1915–20

Example Sentences

See Examples For:

call sign

According to FlightRadar24, the aircraft, which went by call sign SNAKE4, was conducting exercises off the coast of Monterey County and San Luis Obispo County.

From Los Angeles Times ● Sep. 23, 2026

Minnis announced the death of Townsend, using the Yorkshireman's call sign of Badger, in a social media post.

From BBC ● Aug. 24, 2026

The smaller plane then flew to the U.K., where Trump stopped en route to Washington, under a nondescript call sign.

From Slate ● Aug. 11, 2026

Hundreds of kilometres away, a 45-year-old military commander who goes by the call sign "Jason", was just back from a mission.

From Barron's ● Aug. 7, 2026

They used her name as the call sign and Derek had shown Brian how to use the radio, the correct procedure in case of an emergency.

From "The River" by Gary Paulsen