Pirate radios are often used to broadcast unauthorized content.

Scientists have detected multiple radio bursts from deep space.

Scientists use radio collars to track the movement of animals in the wild.

I have two radio alarms in my bedroom.

The radio compasses on the ship were used for navigation.

I used to listen to radio cassettes when I was a teenager.

The radio energies emitted by the stars are detected by telescopes.

The radio altimeters are used to measure the height of an aircraft above the ground.

Radio interferometers are used to study celestial objects.

The radio jocks entertained the listeners with their witty banter.