31.   Its technology allows voice and data to be transmitted using radio signals instead of fiber optic or phone cables.

32.   Maddox is smiling and using hand signals, and she requested some classical music, which she plays in her room.

33.   PCS is a wireless communications service that is similar to cellular that uses digital signals.

34.   Others use vocal signals such as a click or cluck with the tongue or snap of the fingers.

35.   Phones labeled as wireless usually use digital signals to send and receive calls.

36.   The crew thought its autopilot was using the Global Positioning System, a highly accurate technology for determining longitude and latitude using satellite signals.

37.   The extra signals could be used to carry Internet computer files, two-way paging systems, electronic mail and other services.

38.   The machine uses caller signals to match incoming calls to numbers in its directory.

39.   The jet fighter pilot failed to make visual contact with the missionary plane or use visual signals in accordance with established international aviation procedures and Peruvian law.

40.   The new televisions will use digital signals, like computers and compact disks.