Jan 19, 2008 #1 G gerlou Newbie level 4 Joined Jul 10, 2007 Messages 6 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,281 Activity points 1,384 explain Is it ok to transmit signal with high frequencies in seawater?????????.........If so how about its attenuation, is it high or not?????
explain Is it ok to transmit signal with high frequencies in seawater?????????.........If so how about its attenuation, is it high or not?????
Jan 19, 2008 #2 S salam2000 Member level 3 Joined Jul 24, 2006 Messages 59 Helped 11 Reputation 22 Reaction score 3 Trophy points 1,288 Activity points 1,613 Re: explain for seawater transmitter, usually use Sonar, that its frequency is Ultrasound which is not so high.
Re: explain for seawater transmitter, usually use Sonar, that its frequency is Ultrasound which is not so high.
Jan 19, 2008 #3 G gerlou Newbie level 4 Joined Jul 10, 2007 Messages 6 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,281 Activity points 1,384 Re: explain So it means high frequency transmission on the under seawater is not applicable??
Jan 22, 2008 #4 N Naveed Alam Full Member level 5 Joined Jan 6, 2006 Messages 286 Helped 16 Reputation 34 Reaction score 3 Trophy points 1,298 Activity points 3,250 Re: explain yes, as u know even Microwave frequencies are absorbed by water (a good example is Microwave oven). Naveed
Re: explain yes, as u know even Microwave frequencies are absorbed by water (a good example is Microwave oven). Naveed
Feb 3, 2008 #5 K kender Advanced Member level 4 Joined Jun 19, 2005 Messages 1,425 Helped 138 Reputation 276 Reaction score 39 Trophy points 1,328 Location Stanford, SF Bay Peninsula, California, Earth, Sol Activity points 10,035 Re: explain gerlou said: So it means high frequency transmission on the under seawater is not applicable?? Click to expand... Yes. The radio communication underwater is done with VLF frequencies and kilometer-long antennas.
Re: explain gerlou said: So it means high frequency transmission on the under seawater is not applicable?? Click to expand... Yes. The radio communication underwater is done with VLF frequencies and kilometer-long antennas.