Humminbird Complete Guide to Transducer Installation for Optimal Performance

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Inside the Hull Transducer Installation

In-hull mounting generally produce s good results in single-thic kness fiberglass-hulled boats. Humminbird® cannot guarantee depth performance when transmitting and receiving through the hull of the boat, since some signal loss occurs. The amount of loss depends on hull construction and thickness, as well as the installation position and process.

WARNING! This installation requires slow-cure two-part epoxy. Do not use silicone or any other soft adhesive to install the transducer, as this material reduces the sensitivity of the unit. Do not use five-minute epoxy, as it has a tendency to cure before all the air bubbles can be purged, thus reducing signal strength.

NOTE: In-hull mounting requires an installed and operational depth sounder.

1. Locating the Transducer Mounting Position

Decide where to install the transducer on the inside of the hull. Consider the following to find the best location:

Observe the outside of the boat hull to find the areas that are mostly free from turbulent water. Avoid ribs, strakes and other protrusions, as these create turbulence.

As a general rule, the faster the boat can travel, the further aft and closer to the centerlineof the hull the transducer has to be located in order to remain in contact with the water at high speeds.

25Inside the Hull Transducer Installation

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Contents HDR 650 Installation Operations Manual Thank You Table of Contents Maintenance How Sonar Works Installation Overview Installing the HDR Cutting the Mounting Hole Locating the HDR 650 Mounting PositionHDR Face Plate Trim Ring Tabs Customizing and Assembling the HDRHDR 650 Control Head Installing the HDRCollar Gasket DashboardView Buzzer Installing the BuzzerConnecting to the Power Supply Inline Fuse Holder Installing the TransducerTransducer Installation Overview Locating the Transducer Mounting Position Transom Transducer InstallationRivets Strakes TransomHull StepRibDeadrise Angle LevelPreparing the Mounting Location Drill Holes Assembling the Transducer and Initial Mounting4th hole Mark Initial Bead Alignment Number Transom Angle Measured Distance Transom Angle in degrees MeasuredWeight DistanceBead Ratchet Knuckle Beads RatchetRib Snap the pivot arm down into place Trailingedge One click too low Leading edge One click too highRouting the Cable Transom Mount Transducer Installation Test and Finish the Installation Connecting the CableStoring Excess Cable Gathered at one location as shown See the illustration Storing Excess CableLevel Seam aligned with boat hull Rib Ratchet BeadTransom Mount Transducer Installation Locking Down the Transducer Optional Inside the Hull Transducer Installation Positioning the Transducer and Preferred Mounting Area Trial InstallationRouting the Cable Make sure the position of the transducer is marked Permanently Mounting the TransducerTrolling Motor Transducer Options Trolling Motor Transducer InstallationOperating the HDR Units Shallow Alarm Icon IndicatesHDR 650 Control Head DepthKey Functions Overview Power On/OffSet Units UnitsSet Shallow Alarm Icon Shallow AlarmSet Deep Alarm Icon Deep AlarmPostiveOffset NumberIcon NegativeOffset NumberIconTransducer Maintenance MaintenanceHDR 650 Maintenance HDR 650 Doesnt Power Up TroubleshootingNo Continuous Depth Display in Very Shallow Water No Bottom Reading on the DisplayScreen Fades, Images are not Sharp Bottom Reading Disappears During a Hard TurnYear Limited Warranty Humminbird Service Policy Returning Your Unit for Service Specifications Specifications Contact Humminbird