Quote Originally Posted by rnvinc View Post
It is not uncommon for the higher end units to pick up stray interference more than the smaller units ... They're just that much more sensitive ...

I would 1st remove the xducer from the TM and test it on the other side of the boat away from the TM ...

If the interference goes away ... We know the interference is getting in thru the xducer housing or the cable close to the xducer housing ...

Once we determine if this is the case ... We will have a path forward to hopefully eliminate the issue and make your 859 the unit you expect it to be ...

Rickie
Rickie did just as u stated. Took the transducer off of the foot of the trolling motor as far as I could. Turned on the unit and the Xi5 the prop was moving very slowly. And wouldn't you know it no interference I could even put it as close as a 1/4 of an inch to the trolling motor foot with no interference but as so as I touch it to the trolling motor foot it lights up like a Christmas tree. Tried it with the 859's noise filter on off and high 3