Furuno R109LH Transducer

The Furuno R109LH Transducer is a dual-frequency marine sounder designed for serious anglers and boaters who demand reliable fish detection and bottom imaging. Built to handle the demands of both coastal and freshwater fishing, this Airmar-engineered transducer integrates seamlessly with modern fish-finding systems to deliver consistent performance in varied water conditions. Whether you're pursuing saltwater species or working deep freshwater structure, the R109LH provides the acoustic clarity needed to locate fish with confidence and precision.

The R109LH operates on dual frequencies to give you flexibility in different depths and bottom compositions. At higher frequencies, you gain superior target separation and detail on shallow structure; lower frequencies penetrate deeper water columns and deliver stronger returns on soft bottoms where fish congregate. The 37-pound weight ensures stable mounting and vibration-free performance, critical for eliminating false echoes and noise that can clutter your display. Airmar's engineering ensures this transducer withstands years of saltwater corrosion and freshwater fouling while maintaining consistent acoustic output—a feature that separates proven marine electronics from unreliable alternatives.

Installation on most Furuno-compatible systems is straightforward, with standard mounting provisions that work on transom, hull, or through-hull installations depending on your vessel type and preference. This transducer excels in both trolling applications—where constant speed and depth control demand reliable sounder feedback—and anchored bottom-fishing scenarios where high-resolution imaging reveals baitfish activity and structure nuance. Experienced anglers select the R109LH for systems where durability, accuracy, and long-term reliability matter more than cost-cutting alternatives, making it ideal for commercial operators and serious recreational fishermen alike.