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Max Online: 36273 @ 01/23/13 02:34 PM
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#12368098 - 08/01/17 04:49 PM Wavy return on graphs?!
i-Fish Online   content
Angler

Registered: 06/07/16
Posts: 325




I cannot figure out how to stop it. It's driving me crazy. It's on both the bow and console. Different transducers...??? Please help!
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#12368107 - 08/01/17 04:54 PM Re: Wavy return on graphs?! [Re: i-Fish]
Capt Craig Offline
Extreme Angler

Registered: 08/25/09
Posts: 1404
Loc: Richland-Chambers
This looks like trolling motor interference. The give away is the vertical lines visible in the water. I think if you turn off your trolling motor, you may see it clear up. Sometimes this occurs with the boat rocking side to side. You have to determine the solution by the process of elimination.
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#12368167 - 08/01/17 05:46 PM Re: Wavy return on graphs?! [Re: i-Fish]
grout-scout Offline
TFF Celebrity

Registered: 12/08/08
Posts: 6220
Loc: Boerne, Texas
Hmmmm, not grass is it?

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#12368279 - 08/01/17 07:02 PM Re: Wavy return on graphs?! [Re: i-Fish]
MAK747 Offline
Angler

Registered: 05/08/09
Posts: 392
Loc: Ft Wth
I agree with Grout, looks like grass/weeds. Hard to tell in such shallow water. What does it look like when you get in deeper water?

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#12368549 - 08/01/17 09:00 PM Re: Wavy return on graphs?! [Re: i-Fish]
i-Fish Online   content
Angler

Registered: 06/07/16
Posts: 325
Did it mostly everywhere but it was quite windy for a while. White capping for sure. Once that settled the return got much better.
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#12368563 - 08/01/17 09:08 PM Re: Wavy return on graphs?! [Re: i-Fish]
44 Diesel Offline
TFF Team Angler

Registered: 12/25/12
Posts: 4585
Loc: Burleson,TX
Vertical lines like that can indicate cross talk. Are you running both transducer at the same time. The bottom looks like you are in rough water

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#12368651 - 08/01/17 09:38 PM Re: Wavy return on graphs?! [Re: 44 Diesel]
i-Fish Online   content
Angler

Registered: 06/07/16
Posts: 325
Originally Posted By: 44 Diesel
Vertical lines like that can indicate cross talk. Are you running both transducer at the same time. The bottom looks like you are in rough water


I am running both simultaneously and that was my concern. But I didn't know what to do at the time or how to fix it going forward. Put one on standby while I'm using the other? Is that the only option?
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#12368677 - 08/01/17 09:48 PM Re: Wavy return on graphs?! [Re: i-Fish]
44 Diesel Offline
TFF Team Angler

Registered: 12/25/12
Posts: 4585
Loc: Burleson,TX
Try using the 83khz on unit and 200 on The other, that should greatly reduce the cross talk if not totally eliminate it.

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#12368731 - 08/01/17 10:04 PM Re: Wavy return on graphs?! [Re: i-Fish]
grout-scout Offline
TFF Celebrity

Registered: 12/08/08
Posts: 6220
Loc: Boerne, Texas
Usually crosstalk comes in the form of lines (like a morse code) on the screen, it's very distinctive and if what you have is an electrical interference then it's the oddest thing I've ever seen. If it's not weeds, then it could possible be silt churned up. Just seems to consistent for crosstalk, but what do I know.


The lines at the top & middle of the graph are most def crosstalk, but we're talking about the bottom 1 foot, right?


Edited by grout-scout (08/01/17 10:07 PM)

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#12368853 - 08/01/17 11:13 PM Re: Wavy return on graphs?! [Re: i-Fish]
Curtbass Offline
Extreme Angler

Registered: 04/17/15
Posts: 1065
Loc: Grand Prairie, Tx
You just anwered your own question about the wavy bottom in the picture. The waves on a windy day cause the boat to rise & fall. Especially in shallow water pictures & higher sensitivity setting, turn it down one or two notches when shallow & see if it only gives a single bottom. Looks like you're getting a double reading for bottom. Notice its almost an exact copy of the actual bottom. Grass doesnt match the bottom contour exactly. Yes it varies, but that follows bottom TOO consistently. Its a double image.
.Mine does it too. Mine is worse on the front transducer because it rises & falls more than the stern transducer.
The vertical lines are crosstalk/ interference .


Edited by Curtbass (08/01/17 11:27 PM)
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#12368940 - 08/02/17 05:59 AM Re: Wavy return on graphs?! [Re: i-Fish]
ring fry Online   content
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Registered: 10/25/02
Posts: 5595
Loc: Fort Scott, Ks.
Looks like waves to me.

SE Kansas grass grower
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#12369005 - 08/02/17 07:32 AM Re: Wavy return on graphs?! [Re: ring fry]
Gamblinman Online   content
Extreme Angler

Registered: 11/26/02
Posts: 2776
Loc: Yantis, TX
Originally Posted By: ring fry
Looks like waves to me.

SE Kansas grass grower


Yep...turn your gain down a bit, and some of that interference should clear up. Best thing would be to stop sonar on one of the graphs.
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