1 a wasting away of the body, as from poor nutrition, nerve damage, or disuse. 2  to undergo atrophy; wither; degenerate:His crippled leg began to atrophy with no exercise. 3  to become weakened; decline:Industry atrophied in bad economic times.
Voice Amplifiers / Long Range Listening Devices. Listening devices can be utilized for a variety of purposes including listening through a wall, listening from a distance or enjoying your favorite animals in the wild. More complex systems contain an audio transmitter and receiver.
WHAT A REPATER PROVIDES. People using a repeater get much greater range. from their radio equipment than would be possible talking. simplex (from radio to radio). This is how an individual with a portable. walkie-talkie (handheld) transceiver can. communicate with people many miles away with good clarity.