[arathkopf]

Does anyone know if it is normal for this fishfinder or for that matter any fishfinder to be unable to determine the depth once the boat reaches approximatley 15 knots ?

 

[Joe]

Mine works at that speed. Even on "auto" gain. I do however, have some problems in turbulence.

 

[arathkopf]

What do you mean by turbulance (rough water ?) Is your a thru hull or transom mount. Mine is a transom mount. As soon as I get above 15 knots the depth number just flashes.

 

[arathkopf]

Any one else have any ideas ?

 

[seaslug44]

There are only two possible causes...

It's either a hardware adjustment or an electronic setting adjustment that is needed.

As far as hardware, the transducer needs to be mounted perfectly according to the manufacturer's instructions. For most, that means that it must hang slightly below the hull and be perfectly square with the water. It also must be tight enough so that it does not flip up under higher speeds.


Assuming that your hardware looks to be in order, your next step is to adjust the unit itself. On many units, the gain needs to be increased when the boat is moving. Try that first, and then get back to us if the problem is still there.

 

[618208]

You should be able to get a depth reading at this speed and much faster. If you're not, it's often a problem with the way the transducer is mounted, maybe a problem with the transducer itself. Swing by this board

The Hull Truth

especially the Electronics board for specific help. This question comes up a lot, so try a search first.

Fuzzy

 

[620143]

I had the same problem, It's usually mounted too high or low or the angle.Also is it mounted at the deeepest point on the transome