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S. is this something that the chinese have, and they are using? >> i understand it is a system made in the u.s., and it is a standard sonar crystal item that changes a voltage to the mechanical pulse that pushes out into the water the, and once you have that crystal, you can fairly straight forward to make a pinger or a pinger receiver. >> thank you, sir. i appreciate it. you wanted to the say something else, richard quest? >> i would like to the -- >> is he still there? >> yes. i want to quickl...
United States Crystal Item Pinger Receiver Stumped Richard Qut Quest Say Something Else Microphone Being
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