Time was, network television, radio and the movies more or less operated in their own orbits.

He used the image that they could not communicate because their radios operated on different frequencies.

The traditional radio that we're used to operates in what's called the "far field."

Several radio and meteorological stations operate on the island nowadays.

He took up a position behind the hut and waited, wondering how the radio operated.

A radio controlled model airplane club operates their aircraft on one of the open fields which they maintain.

Private radio and TV stations operate at a regional level.

However, the radio was reportedly operating properly the day before the crash.

A radio was operating from the front of the tea room.