Garmin Airmar R109LHW 2kW 38-75kHz & 150-250kHz Thru-Hull Transducer

The Garmin Airmar R109LHW 2kW 38-75kHz & 150-250kHz Thru-Hull Transducer is purpose-built for serious anglers and boaters who demand dependable, high-resolution sonar performance. This dual-frequency transducer delivers the imaging clarity needed to locate structure, thermoclines, and suspended fish in both shallow and deep water. Whether you're tournament fishing, running a commercial operation, or exploring unfamiliar waters, this transducer transforms your Garmin fishfinder into a precision tool that separates successful trips from frustrating blank days.

Built with Airmar's proven engineering standards, the R109LHW combines 2kW peak-to-peak power with dual-frequency capability: 38–75 kHz for wide-beam bottom mapping and structure identification, and 150–250 kHz for high-definition target definition and fish marking. The thru-hull design eliminates hull interference and provides superior signal consistency compared to transom-mount alternatives. Heavy-duty construction and marine-grade materials ensure corrosion resistance and long-term reliability in saltwater, freshwater, and harsh environmental conditions. Installation depth and transducer cone geometry are optimized to perform consistently across vessel types and speed ranges.

This transducer is ideal for anglers upgrading to Garmin's latest sonar ecosystems or for boat owners integrating professional-grade fishfinding into new builds. It pairs seamlessly with compatible Garmin chartplotters and fishfinder units that support dual-frequency input. Professional installation is recommended to ensure proper thru-hull mounting, cable routing, and impedance matching with your Garmin system. The investment in this transducer pays dividends in water clarity, target separation, and confidence on the water—making it the choice for those who fish to win.