Sondi GT17M-THF 20° - läbipõikav sond CHIRP keskmise sagedusega

The Garmin GT17M-THF 20-degree through-hull transducer is a transducer designed to provide reliable and stable CHIRP sonar performance. It is specifically suited for vessels with a deadrise angle between 17 and 24 degrees. Made of stainless steel, it ensures increased durability and is compatible with various hull materials.

The GT17M-THF 20-degree transducer is compatible with fiberglass, wood, composite, aluminum, and steel hulls. For aluminum or steel hulls, it is mandatory to use the included galvanic isolation components to prevent galvanic corrosion and water intrusion around the transducer.

For optimal performance, the GT17M-THF 20-degree transducer is designed for vessels with a deadrise angle between 17 and 24 degrees at the installation point. It is critical to precisely measure the deadrise angle at the chosen location before drilling holes in the hull.

Yes, installation of the GT17M-THF 20-degree transducer by a qualified marine installer is strongly recommended to ensure optimal performance and avoid any risk of injury, damage to the device, or the vessel. Incorrect installation may result in damage or injury.

The main tools required for installation include:

A drill with a 3 mm (1/8 in) bitA hole saw of 98 mm (3 7/8 in) for fiberglass hulls or 101 mm (4 in) for metal hullsA 4.5 mm (3/16 in) Allen keyAn adjustable wrench suitable for nuts up to 108 mm (4 1/4 in)Marine sealant (flexible rapid-curing type, for below the waterline)Sandpaper and masking tapeAdditional elements may be required depending on hull type.

For optimal performance, the transducer must be mounted in a clean, non-turbulent water zone. Consider the following:

On outboard and stern-drive boats, mount it forward and close to the engine(s).On inboard boats, mount it forward and away from the propeller and propeller shaft.Avoid mounting it behind frames, struts, fittings, water intakes or discharges, or anything that could create air bubbles or turbulence.The transducer must be parallel to the bow-to-stern axis of your vessel.

Yes, when installing the GT17M-THF 20-degree transducer on an aluminum or steel hull, it is mandatory to use the included galvanic isolation components. Failure to install them could lead to galvanic corrosion and potential water ingress around the transducer. Ensure the housing isolator is flush with the inner hull surface.

Yes, you must update the software on your Garmin chartplotter when installing the GT17M-THF 20-degree depth sounder. For update instructions, refer to your chartplotter’s user manual.