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| | Abstract | | We have attempted a test of high frequency(HF) electromagnetic wave propagation in underwater. It is generally supposed that HF wave does not propagate in sea water because HF wave is rapidly decayed with distance. Lucas suggests that HF wave can be use for a communication in sea water in distance of up to 1000m. In this study, we try a propagation test of LF wave but also HF wave. |
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