Humminbird Side Imaging Forums
Side Imaging Forums => 898c SI => Topic started by: bakerdave on March 30, 2010, 09:59:06 PM
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got my unit back. All hooked up and turned it on. My depth is showing 1.4 ft and it is out of the water. Is this an issue? will the depth be accurate when i put it in the water?.
Again thanks to the great service at Humminbird
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Well, you may get a reading when its out of the water, but it will not read correct. The speed of sound in air is slower than the speed of sound in water.
Robert
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Thanks, i assumed it would not read any depth out of water