Humminbird 128 manual Determining How to Mount the Transducer

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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.

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Contents Page Accessories Installation OverviewParts Supplied Determining How to Mount the Transducer Thru-Hull Mounting Alternate Transducers and Mounting MethodsPortable Mounting Trolling Motor MountingTransducer Exchange Beginning InstallationStep One Determine Where to Mount the Transducer Transom InstallationStep Three Assemble the Transducer Step Two Drill the Mounting HolesStep Four Mount the Transducer to the Transom Step Five Adjust the Running Position of the TransducerStep Six Route the Cable Inside the Hull Installation Step One Determine the Mounting LocationStep Two Test the Mounting Location Step Three Permanently Mount the Transducer Control Head Installation Step One Determine Where to MountStep Two Connect the Power Cable to the Boat Step Four Run the Cables Step Three Drill the Mounting HolesYour Humminbird is now ready for operation Step Five Assembling the Connector HolderTest the Installation Testing the Installation Simulator Operation What YOU see ON-SCREENInterpreting the ON-SCREEN Information Page Control Functions Senstivity Menu FunctionsDepth Range Zoom Fish Alarm Depth AlarmFish ID Using Diagnostic