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Message Subject: Double bottom question

Pepper

Posted 7/7/2017 10:55 AM (#868115)
Subject: Double bottom question

Posts: 1516

My HB shows a double return I'm in water under 14 or 15 feet. The digital reads at twice the actual dept any suggestions on how to correct?

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kjgmh

Posted 7/7/2017 11:31 AM (#868118 - in reply to #868115)
Subject: Re: Double bottom question

Posts: 1091

Location: Hayward, WI

Make sure you have the latest software update in your unit.

Muskers

Posted 7/7/2017 12:05 PM (#868120 - in reply to #868115)
Subject: Re: Double bottom question

Posts: 325

Location: Otsego, MN

I have had this issue in the past in shallow, hard bottom areas. The signal is too strong and what you are actually reading is the signal bouncing off the bottom a second time and returning. If you adjust your sensitivity down significantly it will fix that.

Fishysam

Posted 7/7/2017 12:55 PM (#868130 - in reply to #868120)
Subject: Re: Double bottom question

Posts: 1209

Yes, sensitivity is to high for that bottom composition. Also with unit off you can unplug and replay the ducer wire, on my trolling motor us2 I did all three connections and the one inside the tm head was the culprit.

pklingen

Posted 7/7/2017 7:21 PM (#868185 - in reply to #868115)
Subject: Re: Double bottom question

Posts: 866

Location: NE Ohio

set your sensitivity at about 13 and manually change your bottom depth to something a little deeper than you are. take it off of "AUTO" bottom depth and that will solve your problem.

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