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Muskie Fishing -> Lures,Tackle, and Equipment -> Dueling transducers
 
Message Subject: Dueling transducers
Jim Munday
Posted 3/8/2009 10:44 AM (#364888)
Subject: Dueling transducers




Posts: 73


One thing we're going to do this year is add a second depth finder to the boat. The transducer that's already mounted is on the transom. I'm weighing the pros and cons of mounting the second one on the other side of the transom, or whether to put it onto the bow mounted trolling motor . (These particular units can’t be daisy-chained off of the same transducer, so they’ll each require their own.)

My questions are: If the two transducers are operating on the same frequency (which they are), will it result in interference with the return signal if you mount them both on the transom? And, would mounting the second transducer on the trolling motor even be far enough apart to avoid this by the time the signal returns from bottom?

I was wondering if anybody has tried this before with success or failure?



Edited by Jim Munday 3/8/2009 10:46 AM
VMS
Posted 3/8/2009 6:39 PM (#364977 - in reply to #364888)
Subject: Re: Dueling transducers





Posts: 3508


Location: Elk River, Minnesota
Hello!!

If you mount the other transducer on the trolling motor, the only time you will get any sort of overlap/interference is when you are in deep water (probably over 40 feet). With the small cone angles that the transducers have, it takes a long way's down to get there.

For example: Let's say your transducer has a 20 degree cone. At 40 feet deep, you would have a circle on the bottom of the lake that would be just a touch over 7 feet in diameter. Now..put that on a boat that is 17 feet long (short for most of the muskie boats out there now) and it would take almost 60 feet in depth to finally overlap cones. Disclaimer here: These are based upon theoretical numbers and a perfect cone shape going down. Realistically, the cone is probably not perfect, so overlap may happen before a 50 foot depth. Everything here is relative, but for the most part, if you put a transducer on the bow and one on the stern, you probably will never be in such a situation that would have them overlap...at least for casting purposes...but then again, if that is the case, turn one off...

Steve
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