Two FFs on the same boat

[LewisW96]

I have a Fishmark 320 on the front with the ducer on the TM. And I also have a Fishmark 480 on the console with the ducer off the back. The boat is a 20 ft bassboat but then I turn them both on at the same time I get interference on both FFs. If I run one at a time then everything is fine. Both ducers are pointed straight down and the water I'm trying to fish is 8-35 feet. Is there anything I can do to correct this? I played with the settings today on the lake and could not get them to work at the same time no matter what.<br /><br />Lewis

 

[Boatist]

Re: Two FFs on the same boat

LouLou<br />I am suprized it has interfearence at 8 feet. Normal to have interfearence at 35 feet. Does each unit have a ferite core that the power cable wraps around?<br />Frist thing I would try would be to change the trolling motor transducer to point foward by about 10 degrees. <br />If still get interference then try turning down the Sensitivity on both units.<br /><br />Let us know how your make out.