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Align transducer centerline with hull bottom.
However, there are times when you may need to adjust the transduce
slightly higher or lower. (The slots in the mounting brackets allow you
to loosen the screws and slide the transducer up or down.) If you fre-
quently lose bottom signal lock while running at high speed, the trans-
ducer may be coming out of the water as you cross waves or wakes.
Move the transducer a little lower to help prevent this.
If you cruise or fish around lots of structure and cover, your transduce
may be frequently kicking up from object strikes. If you wish, you ma
move the transducer a little higher for more protection.
There are two extremes you should avoid. Never let the edge of the
mounting bracket extend below the bottom of the hull. Never let the
bottom – the face – of the transducer rise above the bottom of the hull.
Shoot-thru-hull vs. Transom Mounting
In a shoot-thru-hull installation, the transducer is bonded to the insid
of the hull with epoxy. The sonar "ping" signal actually passes throug
the hull and into the water. This differs from a bolt-thru-hull installa-
tion (often called "thru-hull"). In that case, a hole is cut in the hull and
specially designed transducer is mounted through
threaded shaft and nut. This puts the transducer in direct contact wit
the water.
Transom
Hull bottom
Transducer
centerline
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