2 days scaning in salt wather over 30 m, towfish with 60 m cable
i thing that scaning in salt water is possible in 455 khz but difficult in 800 because in 800 a little wave or interference make a very bad picture, problem with current to take the target in 8 or 10 meter range
i join sample
in 455 khz, good picture
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in 800 khz there's more noise (wave, motor...) the picture is not good
800 khz is very nice in river
i hope that a double ducer in 455 khz is a good solution in salt water...
as anybody get experience in this type of search