Sonda GT23M-TH - průchozí nerezová CHIRP/ClearVü

The Garmin GT23M-TH transducer is a stainless-steel through-hull transducer. It integrates two advanced sonar technologies:

Traditional CHIRP in mid-band: Operates on a frequency range of 80–160 kHz with 600 W power. CHIRP ClearVü: Operates on 260/455 kHz frequencies with 500 W power. It also enables precise monitoring of depth and water temperature.

The GT23M-TH transducer delivers 600 W of power for traditional CHIRP sonar in the mid-band (80–160 kHz) and 500 W for CHIRP ClearVü sonar (260/455 kHz).

The Garmin GT23M-TH transducer can reach a maximum depth of 549 meters using traditional CHIRP mode. In CHIRP ClearVü mode, the maximum depth is 305 meters.

The Garmin GT23M-TH transducer uses an 8-pin connector to interface with a compatible Garmin device.

The GT23M-TH transducer is made of stainless steel. This material is selected for its robustness and corrosion resistance, making it particularly suitable for demanding marine environments and ensuring a long service life.

The beam widths of the GT23M-TH transducer are as follows:

For traditional CHIRP sonar: 24°/13°. For CHIRP ClearVü sonar: 2.0°x51° at 260 kHz and 1.4°x29° at 455 kHz.

Yes, the Garmin GT23M-TH transducer is capable of measuring and providing water temperature data, in addition to its depth detection capabilities.

The GT23M-TH transducer is designed for coastal and offshore anglers. Its through-hull mounting is compatible with fiberglass hulls (with or without core) and metal hulls.

Yes, it is necessary to update the software of your Garmin chartplotter when you install this depth sounder to ensure optimal compatibility and benefit from all features and best performance.

The Garmin GT23M-TH transducer is designed for through-hull mounting, meaning it is installed by drilling through the boat's hull to secure it from the outside to the inside.

For installing the GT23M-TH transducer, you will need the following tools:

Drill and drill bits (3 mm, 9 mm, 13 mm)Open-end or adjustable wrenches (13 mm and up to 38 mm)Marine sealant (flexible, fast-curing, for below the waterline)Mild detergent or rubbing alcoholSandpaper and masking tapeWaterproof insulating tapeHole saw (25 mm or 32 mm depending on hull type)For fiberglass hulls with core: marine epoxy resin.If using a fairing block: jigsaw or bandsaw, rasp.

A fairing block is required if the deadrise angle of your hull at the mounting point exceeds 5°. It positions the transducer parallel to the waterline, which is critical for accurate sonar readings and optimal performance.

The fairing block supplied with the GT23M-TH transducer can compensate for a deadrise angle of up to 25°. This ensures optimal orientation of the sonar beam, even on hulls with a pronounced angle.

For optimal performance, the transducer must be installed in an area of clean, non-turbulent water. Here are some general considerations:

Outboard and sterndrive boats: Mount the transducer in front of and near the engine(s).Inboard boats: Mount the transducer in front of and away from the propeller and propeller shaft.Step-hull boats: Mount the transducer in front of the first step.General positioning: The transducer must be mounted parallel to the bow-stern axis of your boat and avoid turbulence zones created by strakes, appendages, water intakes, or discharges.

Yes, it is imperative to install the transducer with one or more anti-rotation bolts (included). Failure to do so could cause the device to rotate when the boat is in motion, potentially damaging your vessel.

For a fiberglass hull with a core, surface preparation is critical to prevent water intrusion. After drilling the holes for the anti-rotation rod and bolts, the exposed core must be carefully trimmed and sealed with high-quality marine epoxy resin. Allow the resin to cure completely before mounting the transducer in the hull.

Yes, it is essential to apply marine sealant. You must apply it around the base of the transducer stem and the anti-rotation bolts. If a fairing block is used, sealant must also be applied to the side of the block that is in contact with the hull and to the side of the internal reinforcement block.

If you need to print the mounting template, it is crucial to ensure that the scale is set to 100% in your software's print settings (for example, select "Actual size" in Adobe Acrobat). After printing, use a ruler to measure at least one dimension line on the template to verify that it is at the correct scale. However, it is recommended to use the template provided in the product box.

When drilling or cutting into the hull, several precautions must be taken:

Always check what is on the other side of the surface to avoid damaging the vessel or its equipment. Apply masking tape to the drilling area to help reduce cracks in the gelcoat. Always wear safety glasses, hearing protection, and a dust mask to prevent injury.

Yes, it is recommended that this equipment be installed by a qualified marine installer. This ensures correct installation, optimal performance of the transducer, and helps prevent potential damage to the boat or the transducer.