The PM411LWM is a 2 kW ultra-wide CHIRP transducer that has quickly become a favorite for top billfish tournament captains seeking precision and reliability in deep-water sonar applications. With an impressive 40° beamwidth, it offers exceptional fish-finding coverage under the boat, allowing you to cover a large area and detect targets with incredible accuracy. The transducer combines low-frequency CHIRP from 40-60 kHz for excellent bottom detection and medium-frequency CHIRP from 80-130 kHz for higher resolution and clearer imaging of fish, making it ideal for both deep-water and mid-water fishing. With a maximum depth capability of 1219 m for low frequencies and 914 m for medium frequencies, it provides outstanding sonar performance at varying depths. Its urethane housing is designed for custom pocket or keel mounting, offering durability and flexibility. Equipped with a 15 m cable, this transducer delivers high-performance sonar data to help you find and pinpoint fish with unprecedented clarity.

Traditional marine Fish Finders operate at discrete frequencies such as 50 kHz and 200 kHz, use relatively short-duration transmit pulses, and use narrowband sonar transducers. In contrast, CHIRP (Compressed High-Intensity Radar Pulse) uses a precise sweep pattern of many frequencies within a long-duration transmit pulse from a broadband transducer. The equivalent sound energy transmitted into the water is 10 to 1000 times greater than a conventional marine Fish Finder. The echo energy returning to the transducer is likewise superior to that generated by a conventional transducer. The combination of CHIRP, a broadband transducer, and Furuno’s superior Digital Signal Processing, results in dramatically increased fish and bottom detection : TruEcho CHIRP™.