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04-13-2011, 07:38 PM
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#5 |
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Senior Member
Join Date: Aug 2009
Posts: 192
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50KHZ = 80ft and deeper
83KHZ = less than 70ft The main difference is effective beam angle and depth penetration. 83 is wider, 50khz goes deeper. They market the 50KHZ for saltwater and 83KHZ for fresh. |
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