51.   Other scientists on shore have studied satellite readings to track the movements of elephant seals tagged with tiny radio transmitters.

52.   Radio amateurs were buying parts and assembling radio transmitters and broadcast stations in chicken coops, rooftops and barns.

53.   Radio transmitters that keep track of rescue workers who enter endangered buildings.

54.   Radio transmitters relayed information from the sensors to receivers outside the burrow.

55.   Researchers have also used low-flying planes to track individual peregrines that have been outfitted with radio transmitters.

56.   She had on a collar with a radio transmitter.

57.   So far, Glenn has focused most of his attention on medical experiments, downing a vitamin pill-sized, miniature thermometer with a tiny radio transmitter.

58.   Sometimes he said the fillings in his teeth were radio transmitters and the government was sending him messages through them.

59.   Still listening to her radio transmitter, Nicholas agreed.

60.   Tethers would also be used as antennas to transmit extremely low frequency signals able to penetrate land and sea, providing communications not possible with traditional radio transmitters.