https://devzone.nordicsemi.com/f/nordic-q-a/1785/challenges-with-bluetooth-in-the-subsea-marketHi, I am looking into possible use of bluetooth in the subsea business, but i need to get som questions answered. I hope some of you can help. Can a bluetooth device withstand a exturnal pressure up to 300 bar? Is it possible to send signalsen-USTelligent Community 13Tue, 04 Mar 2014 16:32:27 GMThttps://devzone.nordicsemi.com/thread/7812?ContentTypeID=1Tue, 04 Mar 2014 16:32:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7bf51168-a85a-405d-84cf-33f721708308cocoa<p>Bluetooth LE works in 2.4 GHz frequency. At this frequency water adsorbs all RF power, this is why microwave oven operates with this frequency.</p> <p>Best if you use ELF (as used by submarines to communicate).</p> <p>See <a href="http://engineering.utsa.edu/%7Ebkelley/Pdf/RF%20Communications%20between%20Surface%20and%20Underwater%20Robotic%20Swarms.pdf">this</a> if interested in 2.4GHz underwater experiment.</p> <p>300 bar ??? On chip ?</p> <p>-c</p><div style="clear:both;"></div>