Transducer Mounting

[DelcoSol]

Hey I am having some issues with my 798. For one I am getting a slight rootster tail when on plain also some times I am getting a streak through the left side of the side imaging almost like jack plate interference. Here are a few pics of my mounting. It is almost in the exact spot that my old one was. I am not sure if I have it too low? 

 

[slonezp]

There is a small rectangular plug that was probably not installed which is why you have the rooster tail. The interference might be turbulence from that strake immediately to the left of the mount. Can you post  a screen shot of the interference?  

[Wayne P.]

The recommended height is the 1/2 the thickness (top to bottom) of the transducer to be below the hull bottom. 

You have all the transducer below the hull bottom.  

I see you did install the roostertail plug.

 

The SI pulses "see" from the water's surface to past vertical under the transducer on both sides.

Any object or disturbed/aerated water coming off the hull within that coverage area will be recorded.

[DelcoSol]

Thanks guys. I do have the plug installed. So it appears that I do have it too low.  If i raise it and line the seam on the teansducer with the bottom of the hull I should be good? The thing to the left was from the orig. speedo. it is not sticking off of the transom very far. maybe 1/4 inch. It does't pass the transducer mounting bracket. 

[Wayne P.]

You have to experiment with the height. That is why there are slots instead of round holes in the mount.

 

Post a screen shot of what the unit is displaying and a picture of your whole transom.