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Helix 12 trolling motor interference - Walleye Message Central
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  #1  
Old 09-17-2019, 02:49 PM
Muddy Waters Muddy Waters is offline
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Default Helix 12 trolling motor interference

Hi folks - when I am in water shallower than 40 feet, my Helix 12 SI runs perfectly up front when I run it through the transducer of my Ultrex trolling motor.

But when I go out deeper for lake trout I get terrible interference from the trolling motor. Even when I am running Spot lock.

The 2D sonar is perfect up shallow but terrible out deeper.

Any ideas or thoughts about how to correct this????
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  #2  
Old 09-17-2019, 02:52 PM
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Gord Gord is offline
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Are they on the same hz frequency. If so change one to a different hz.


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  #3  
Old 09-17-2019, 03:05 PM
Hot Runr Guy Hot Runr Guy is online now
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The deeper the water, the more chance for the transducer "cones" to overlap one another. Either change frequencies, or turn off one or the other.

HRG
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  #4  
Old 09-17-2019, 04:20 PM
Muddy Waters Muddy Waters is offline
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Default Not sure what you mean - change frequencies

Guys - not sure what you mean when you say “turn one off”. I only have the Helix 12 running on 2D thru the universal transducer.

Also, when you say change frequency - change it on what????
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Old 09-18-2019, 09:45 AM
Ozark Bob Ozark Bob is online now
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Quote:
Originally Posted by Muddy Waters View Post
Guys - not sure what you mean when you say “turn one off”. I only have the Helix 12 running on 2D thru the universal transducer.

Also, when you say change frequency - change it on what????
Do you have an in dash depth gauge? You say it is from the trolling motor. Is it clear until you turn the prop on? Usually trolling motor interference is a problem irregardless of depth. Bob
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  #6  
Old 09-18-2019, 01:16 PM
Muddy Waters Muddy Waters is offline
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Quote:
Originally Posted by Ozark Bob View Post
Do you have an in dash depth gauge? You say it is from the trolling motor. Is it clear until you turn the prop on? Usually trolling motor interference is a problem irregardless of depth. Bob

Yes, Bob - it is clear until I use the trolling motor and it doesn’t happen when I am up shallow.

Only when I am over deeper water.

Hmmm ...
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  #7  
Old 09-18-2019, 09:27 PM
Ozark Bob Ozark Bob is online now
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Could you post a screen shot? Maybe one shallow and one deep. Most don't call 40' shallow. I fish a deep lake so I understand. I have not heard of depth related trolling motor interference before but there is always a first time. I had asked about a cockpit mounted depth gauge. Is your only depth reference on the bow? Bob
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Old 09-19-2019, 04:51 AM
ltrain ltrain is offline
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Hey Muddy, do you have a graph on the console running too? What people are asking for is that if you do have a second graph running and it's same frequency as the bow then there will be cone overlap and interference caused by two graphs running same frequency.

If not then just try turning down your sensitivity settings and see if you still mark fish. Also see if adjusting your trolling motor speeds changes your interference pattern. I've seen where a certain speed will cause more interference than others.
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Old 09-19-2019, 11:14 PM
Muddy Waters Muddy Waters is offline
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Default Thanks

Thanks guys - yes, I have another Helix 12 on the console but I put it on “standby”. Maybe I should turn it right off. Yes or no?
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  #10  
Old 09-20-2019, 12:02 AM
ltrain ltrain is offline
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Quote:
Originally Posted by Muddy Waters View Post
Thanks guys - yes, I have another Helix 12 on the console but I put it on “standby”. Maybe I should turn it right off. Yes or no?
Run both in deeper water until interference is present then turn off console graph and see if condition changes. If so then there's your problem. Now you can continue to run both if you change frequency on one of them. I know on Lowrance it's 83/200 or 50/200 depending on transducer. Set console at 83 and bow at 200 for example, then they won't interfere with each other.
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1987 Lund Baron
2005 Yamaha f150
1998 15 hp Mariner 2stroke with controllking
Rhodan 72" 36v 120 lb. thrust trolling motor
2 Simrad NSS12
Lowrance HDS 12 gen2
Lowrance point 1
Simrad is40
Sonarhub
LSS 1
2 36" Cannon tracks
2 Cannon electric downriggers
2 Highseas quad rod trees
6 Bert's ratcheting rod holders
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