Humminbird ID 600 - Manual (Page 3)

INSTALLATION PREPARATION
INSTALLATION OVERVIEW
Determining How to Mount the Transducer
Your Humminbird fishfinder includes a standard
transducer. This transducer can be mounted on the
transom of the boat or bonded to the inside of a fiberglass
hull boat.
The transom installation, which is the most widely used,
places the transducer on the outside of the boat hull. This
technique produces the least signal loss, and provides a
way to adjust the transducer after installation. The
mounting hardware included is designed to protect both
the boat and the transducer should the boat strike debris in
the water or when trailering.
As an alternative to transom mounting, it is possible on
many fiberglass-hulled boats to glue the transducer on
the inside of the boat hull. Since fiberglass has similar
sonar characteristics as water, the sonar signal can
pass through the boat hull with minimal loss. The hull
of the boat must be single layer construction (not
double-hulled) Also, any air trapped in the lamination
of the fiberglass would prevent the sonar signal from
passing through.
Inside the hull installations require no holes be drilled
into the boat and through experimentation, high-speed
operation comparable to transom mounting can be achieved. Two-part slow cure
epoxy (not included) is required to glue the transducer in place.