Guests - If You want access to member only forums on FM. You will gain access only when you Sign-in or Sign-Up on Fishing Minnesota.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
92python

Trolling motor / AM radio interference

5 posts in this topic

One thing I want to fix before the open water season is to get rid of the annoying effect my trolling motor has on my boat stereo when listening to the Twins games on AM radio. The stereo and trolling motors are plugged into different batteries but when I am listening to the game and I turn on either trolling motor I get a sound that starts with a certain pitch that gets higher then lower while the trolling motor is on and you can't really listen to the radio.

Any ideas? Will some sort of filter between the stereo and it's power source or stereo and the speakers work?

Share this post


Link to post
Share on other sites

I'm going to be of no help to you at all.

I posted this exact same thing last summer and was told there's no fix.

I know there's a fix, because I'd just bought a new boat last summer and it's the one doing it.

My old boat, you could listen to anything, on any station, and there was no whine.

Now that you've got me thinking about it, I think I'll head to Radio Shack tomorrow.

Gotta put that on the to-do list I guess.

Share this post


Link to post
Share on other sites

There is no fix if your motor has a pulse-width modulation unit (aka Minn Kota Maximizer or Motor Guide Dura Amp) other than distance. Cheaper models of either brand that are set 5 or 4 speed units instead of variable speed motors should not interfere.

Share this post


Link to post
Share on other sites

Should have skimped on the trolling motors. What a bummer to have a Vector and a Power Drive Autopilot!!! Maybe I should try a lead blanket for my stereo. I am going to try a walkman and a portable radio and see what happens with the trolling motors on.

Share this post


Link to post
Share on other sites

Google crutchfield and do a search for noise filters. They have an American International S15A filter that may work for you. If you are unsure give them a call and they should be able to hook you up. They are only $12.99.

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • Mike89
      2 people on the north end of Osakis now
    • fishersofmen
      Yeah next week looks good for getting out. Hopefully the snow totals stay on the low side but at least its gonna be the light powder variety.
    • Neighbor_guy
      3" on west hunter in Zimmerman 15yds from shore.  Lakes talking a lot today. Keep in mind the lake is only 8' deep   A dozen trucks/cars at Baxter last evening when I drove by  
    • CJH
      Thanks for the update.  Good news!!     Be safe everyone!
    • CJH
      Thanks guys.  So just to recap so far, Nils and KDrill require adapters, which add $30 or so, but you can use them w/out the drill plate if you want to.  How about Strikemasters do they need an adapter?     Also, just wondering if there is any legit reason to pay $100 more for the K Drill over the Nils?  Seems to me they are about the same weight (ballpark) and both cut pretty fast.     Thanks again for the info fellas!!