Topic: Electrical enterferance

[fox99]

I am getting a enterfernace when i use my trolling mtr. any ideas

The himminbird goes bland and when I get off the mtr it looks ok.
I have a 788ci some say i need a power choke.  If so where can I get one

[sonar2000]

Understand you problem and can only say welcome to the forum. You have come to the right place for answers.
Rather than post a list of remedies which could or not help with your problem I suggest you use the search tab at the top and enter the words rf choke and then hit search.
you will find a long list of "hits' referencing interference and also where to buy the part for reducing or eliminating interference.
This may be a trial and error process to get the end results.
Chuck

[Humminbird_Greg]

fox99,
You are experiencing RF interference from your trolling motor’s variable speed circuitry.  Some of the posts on this web site may contain old information.  I would contact the Humminbird Customer Resource folks about this.  They should be up to date on what our Engineers are recommending to help fix this.  Be forewarned though: what works on one boat does not always work on other boats – such is the nature of RF interference.

[sonar2000]

Greg, that is why I asked him to reference the search information.
While it is a lot of information in the end he will have all that is known and not just the most current.
Which should get a fix for the problem..

An informed consumer is a smart shopper...

Chuck