Two Depth Finder Locations

Arkman

Chief Petty Officer
Joined
Oct 22, 2008
Messages
400
I'm working on my boat and I was thinking. It would be nice to have two spots on my boat to hook up my depth finder. I have a 16' lund with 3 bench seats. I would like one spot back by the motor so I can see whats going on in back then I would like to move it up to the bow of the boat while I'm doing my trolling motor. How would I go about doing that?

Thanks!
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Two Depth Finder Locations

Pretty straightforward, Arkman. You need two SONARs; one transom mounted and one troller mounted.

If they are on the same frequency you won't want to run them both at the same time.

I tried to do it with one SONAR and two transducers, but it was a pain switching it back and forth.
 

John_S

Rear Admiral
Joined
Jun 21, 2004
Messages
4,269
Re: Two Depth Finder Locations

I agree with JB, moving the head unit around is a pain, and the licklyhood over time of dropping the expensive head unit, becomes very likely. Then, if your lucky, its in the boat. ;) HB, and suspect Lowrance, sell switches for 2 head units to one transducer (either or, but not both). The switch costs as much as or more than typical down sonar transducer. So, you might as well have two complete independant systems. Failure of one, will leave you with a working sonar.
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: Two Depth Finder Locations

Agreed on the two separate units. I have one the console and one at the bow with the transducer mounted on the troller. No fuss - no bother.
 

hornsfan

Recruit
Joined
Sep 29, 2010
Messages
4
Re: Two Depth Finder Locations

I know that Lowrance makes a switch that allows either of two head units to work off one transducer. I bought one from eBay for $12 plus some shipping. I have seen a couple more in the same forum as the fishfinders.

I think Garmin makes a similar switch and I know that Humminbird also makes one.

Hope this helps.
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: Two Depth Finder Locations

If you have two head units, why not just use a second transducer and be done with it. No wiring, no fuss.
 
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