Garmin GT8HW-TM Plastic, TM or Trolling Motor Transducer, High Wide CHIRP - 150-240kHz, 250W, 8-Pin

The Garmin GT8HW-TM Plastic Trolling Motor Transducer is a high-frequency sonar solution engineered for shallow-water and freshwater fishermen who demand clear bottom definition and crisp fish targets beneath the boat. Operating at 150–240 kHz with 250W power output, this 8-pin transducer delivers the wide beam angle and precise frequency separation required to distinguish individual fish from debris and structure in tight quarters where traditional broadband sonar falls short.

The GT8HW-TM features a 24-degree beam width—significantly wider than standard transducers—providing expanded coverage area and more complete water column mapping without sacrificing target definition. The high-wide CHIRP architecture sweeps across the 150–240 kHz range, enabling superior sonar clarity that separates fish arches cleanly and reveals hard bottom transitions in shallow lakes and ponds. The plastic construction resists corrosion in fresh water and brackets securely to trolling motor shafts, making installation and repositioning straightforward. At 250W output, the GT8HW-TM balances power efficiency with sufficient signal penetration for depths typical of trolling applications.

This transducer is built for weekend anglers and competitive tournament fishermen working shallow structure—grass flats, weed lines, hard pan, and transition zones where a wider, high-frequency view accelerates target identification. It pairs with compatible Garmin fish finders that support 8-pin transducers and CHIRP sonar capability. The wide beam angle reduces the number of dead zones under the boat, letting anglers see more structure with fewer cone sweeps and faster bottom reading—a real advantage when working tight cover or marking baitfish movement in confined spaces.