Communication is provided by 5,805 radio units and 1,652 mobile phones.

Revenue for the radio unit was flat at $550 million.

It developed new radio units, since the mid-1950s also television receivers.

The black vulcanized line ended at a small radio unit.

Single address messages - These are sent only by the mobile radio units.

Short data messages - These may be sent by either the base station or the mobile radio unit.

He spoke quietly into a radio unit on the wall.

The radio unit continued to be a thorn in the company's side.

He tried to figure out what to do next and after some effort remembered he'd taken a radio unit.

Don't want to be out here with an injured man in the dark, he told himself, tapping on the control keys of his radio unit.