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'[OT] sonar communication'
|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
antenna just above.
This time I want to send short text bursts and receive them at another
To be most honest, I worked on the other project 10 or 15 years ago, and I
don't remember things such as the optimal frequency to use in water, etc.,
and that project did not do any underwater transmission.
I'm not looking for a free education here - I'm really astounded as to how
little information is available in print or on line. Perhaps someone can
help by pointing me in the right direction.
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