11.   The Global Positioning System is a hand-held device that bounces a signal off a satellite to give a hunter his coordinates.

12.   The main tool was sonar, to bounce signals off the ocean bottom.

13.   The service bounces broadcast signals off orbiting satellites and into homes equipped with a small, dish-shaped antenna and digital decoder.

14.   To generate the data, ships bounce sound signals off underground formations.

15.   A sailor on a solo crossing of the Atlantic bounces signals off the satellite to stay in touch with his family.

16.   They bounce signals into a focusing eye centered above by tepee-like support legs.

17.   Uplinking bounces the signal from the stadium off a satellite back to the TV station for broadcast.