1.   The radar sends out radio waves and listens for echoes from enemy craft.

2.   All the weather radars send out radio waves from an antenna.

3.   To judge the locations of nearby objects, a laser radar sends out light pulses and measures the time it takes for the reflections to be received.

4.   Its radar can send images back to the ground operating base via satellite.

5.   Its radar can send real-time images back to the ground operating base via satellite.