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Thread: sonar communication
www.piclist.com/techref/index.htm?key=sonar+communication
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face BY : Russell McMahon email (remove spam text)



Like this ? Frequency given.

       http://www.lbri.go.jp/lbri/auv.htm

Professional underwater voice comms. No details

       http://www.oceantechnologysystems.com/

   Speech on 33 kHz carrier

           http://www.oceantechnologysystems.com/through_water.html

Reference only. Sounds hopeful.

       http://nmml.afsc.noaa.gov/library/acquisitions/Jun01.HTM

       Voegeli, Frederick A., et al. 2001. Ultrasonic telemetry, tracking
and automated monitoring technology for sharks. Environ. Biol. Fishes
60(1-3):267-281. REPRINT FILE.



       RM


> I noticed Doug Butler's mention of experience with sonar, and was
wondering
> if he or anyone with similar experience could point me in the right
> direction with a personal project.
> I would like to be able to send and receive serial data underwater. I at
one
> time built hydrophones with small piezo elements that would listen to
> underwater sounds and then transmit the recived data via RF from a
floating
{Quote hidden}

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