101.   The invisible fence is a buried wire along the perimeter of the property, broadcasting radio signals that will activate a shock collar if a dog gets too close.

102.   The maps they supply the pilots are constantly cross-checked and updated using ground-based radio navigation signals.

103.   The key tags contain tiny devices that are turned on by radio signals from the pump.

104.   The idea, she and Antheil decided, was to defeat jamming efforts by sending synchronized radio signals on various wave lengths.

105.   The metal-lined shopping bags prevented the security tag from returning the radio signals.

106.   The New York-based Winstar, which uses a fixed-wireless technology to transmit voice and data over radio signals, filed for bankruptcy protection in April.

107.   The rat wears a small antenna and a backpack that translates a radio signal into electrical pulses applied to select areas of the brain.

108.   The radio signals from the probe were originally expected to have been relayed to earth instantly from Galileo.

109.   The radios, which use a technology called Radio Data System, send a stream of text and other data along with the regular radio signal.

110.   The rat wears a small antenna and a backpack that translates a radio signal into electrical pulses applied to the brain.