<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:8pt"><div>Water attenuates radio signals and microwaves would still be too long to penetrate any reasonable amount of depth.</div><div><br></div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 8pt;"> <div style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> On Monday, June 2, 2014 5:28 PM, Nathan.tuttle via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br> </font> </div> <br><br> <div class="y_msg_container">Hey I am a submersible enthusiast and an expert engineer.<br><br>One thing that is bugging me is why
communication with devices at great depths (the very bottom of the ocean) seems to be so hard.<br><br>The thing I am working on is miniature drones fully equipped and deployed en masse to scan and collect data from the bottom of the ocean.<br><br>Primarily, I want to find Amelia Earharts wreckage ;)<br><br>My question is, would it be difficult to create an underwater device that can communicate via microwave to surface?<br><br>Microwaves on the electromagnetic spectrum can pass through things in a line of sight manner if there is nothing obstructing them.<br><br>But I am weak on my physics and maybe the several billion tons of water that it has to pass through would squelch the signal.<br><br>Is there a means of telecommunication with high enough bandwidth to transfer signals from that distance and that depth?<br><br>Although our earth is covered 70% of water. I think we have seen technology come to the point where a mass deployment of small
controllable drones equipped with detection devices could search the sea floor.<br><br>I would great appreciate your input.<br><br>Sent from my iPad<br>_______________________________________________<br>Personal_Submersibles mailing list<br><a ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><br></div> </div> </div> </div> </div></body></html>