Sending an S O S, maybe

Usage examples of radioing.

World War II, when the Japanese fleet had had air superiority, or when the Germans had used long-range Condors to circle convoys, radioing their positions to any interested party, and not a thing the Allies back then could do about it.

A thousand feet clear of the plane its parachute will deploy and the instrument package will begin radioing back readings as it descends to the sea.

The Rebels found pockets of survivors all over the state, and stopped whenever they could to explain what was happening and why they could not linger any longer than to give medical attention to those needing it and radioing to Base Camp One with the locations.

It would have given him the option of radioing for a police wrecker to bring him gas, which would have been embarrassing, or getting drowned in the torrential rain trying to walk to a gas station.