RF communication through salt water

I'm working on a project where I need to transmit RF signals through salt water. The distance in water will be max. 5m (16ft). I was thinking going for a ATmega build with the RF433Mhz modules of something, but don't know if that will work in saltwater. I have tried to do some reasearch on this subject but couldn't find much. Does anyone know some good research on this or can suggest other build it would be much appreciated.

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kas.lewis over 9 years ago in reply to dougw +3

dougw I'm starting to wonder if you are not the most interesting guy around here. The projects you've worked on, the experience you have. You definitely sound like someone us noobs should be listening…
jc2048 over 9 years ago +2

You can do it by calculation. The conductivity of the salt water will allow you to derive the 'skin depth' for the frequency of transmission. Each skin depth is an attenuation of 8.6dB (it's 1/e, by definition…
jc2048 over 9 years ago in reply to clem57 +1

If the water were pure there would be no conduction, so shielding by skin effect goes away, but the water is a dielectric so it would still absorb some of the radiation. Overall, the water molecule is…

clem57 over 9 years ago

ELF is a towed array which will be out in some cases and in others can be pulled in. It may be cut in extreme maneuvering case. For details and more see https://en.wikipedia.org/wiki/Extremely_low_frequency
Clem
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clem57 over 5 years ago

opps
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