Trolling motor interference

kraetzer · Post by **kraetzer** » Sun Apr 17, 2011 1:11 pm

Went out on the water yesterday and noticed that i get some kind of interference on my side- and down-imaging screen (not on the 2D sonar) when i run the trolling motor. I never noticed that before so i'm not really sure where to start looking for the problem.
Any kind of help would be much appreciated.
Thanks,

basstrophy · Post by **basstrophy** » Sun Apr 17, 2011 8:59 pm

I had some trolling motor noise that showed up on my Hummingbird unit everytime I hit the button. I first tried the noise filter settings on my unit, which didn't help at all. Then I installed a double ground which helped some. Then i installed a choke which stopped all the noise. I also noticed if my batteries became low the noise became more visable with just the double ground.

If you need help installing a double ground it's farely simple. read though this link I explained each step I went through before completely removing the noise. I'd suggest reading the complete link, you'll see where i asked the same question as you did, start from there.

http://www.westernbass.com/forum/viewto ... 48&t=65503

kraetzer · Post by **kraetzer** » Mon Apr 18, 2011 2:40 pm

Hi basstrophy,
Thanks for the info. I will definitely take a look at it. I'm just wondering why this is showing up all of a sudden -> I haven't put any new equipment on the boat for the last 4-6 weeks and I never had a problem. I guess I was hoping that I just pushed the wrong button in one of the settings and that I don't have to do any kind of work on it.
Thanks again for the help,

basstrophy · Post by **basstrophy** » Mon Apr 18, 2011 5:43 pm

First thing to try is your Noise Filter setting. Here is a link from youtube:

http://www.youtube.com/watch?v=aChHpx5kMfQ

or
*press menu twice
*under sonar move your curser down to were it says noise filter
adjust your sonar; you have several settings
OFF
low
med
High
high 1
high 2
high 3