The CM599LH combines low- and high-frequency CHIRP technology to provide exceptional sonar performance for deep-water fishing. The low-frequency array operates between 28 and 60 kHz and delivers strong penetration down to 3048 m (10,000 ft), making it ideal for targeting deep-water species such as tuna and swordfish.

The high-frequency ceramic operates between 130 and 210 kHz with a narrow 8° to 4° beam, providing excellent target resolution and fish separation. This high-frequency band allows anglers to clearly distinguish fish, bait schools, and bottom structures even in challenging conditions.

The CM599LH features a urethane SEALCAST™ housing designed for installation inside a cavity or welded tank, protecting the transducer and ensuring stable acoustic performance. This installation method is particularly suited to vessels with fiberglass or metal hulls and allows custom installation angles for optimal sonar performance.

Integrated depth and fast-response temperature sensing provide valuable environmental data for fishing operations. The CM599LH is commonly used on professional fishing vessels requiring reliable high-power CHIRP performance.

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™.