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ultrasonic transmitter

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ultrasonic transmitter [¦əl·trə′sän·ik tranz′mid·ər]
(engineering acoustics)
A device used to track seals, fish, and other aquatic animals: the device is fastened to the outside of the animal or fed to it, and has a loudspeaker which is made to vibrate at an ultrasonic frequency, propagating ultrasonic waves through the water to a special microphone or hydrophone.


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The TFXP utilizes two transducers, which function as both ultrasonic transmitters and receivers.
Straight line fork length was measured, and a Vemco (Halifax, Nova Scotia, Canada) ultrasonic transmitter (model V32) was attached near the second dorsal fin with nylon straps as described by Holland et al.
Operating in the frequency range above 20KHz, an ultrasonic transmitter floods the region surrounding the part.
 
 
 
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