Echonautics CB131MA600 600w 80-130kHz Medium CHIRP Bronze Thru-Hull

The Echonautics CB131MA600 600w 80-130kHz Medium CHIRP Bronze Thru-Hull transducer is built for serious anglers and boaters who demand reliable depth and fish-finding performance in fresh and saltwater environments. This bronze thru-hull unit delivers the sonar clarity needed to locate structure, baitfish, and bottom composition—critical factors whether you're working shallow coastal flats or deeper freshwater lakes. Thru-hull transducers mount permanently through the hull, offering superior signal transmission compared to external alternatives and eliminating the need for a separate mounting bracket.

The medium-frequency CHIRP (Compressed High-Intensity Radar Pulse) technology operating in the 80-130kHz range strikes an ideal balance between depth penetration and target definition, making it effective across a wide range of water conditions and bottom types. At 600 watts output power, this transducer generates strong, clean sonar returns without excessive noise or interference, ensuring you see what's actually beneath your boat. The bronze construction resists corrosion in saltwater and provides excellent durability in harsh marine environments, while the thru-hull stem design keeps the transducer flush with your hull for minimal drag and maximum water contact.

This transducer is ideal for anglers upgrading from older single-frequency units or first-time buyers installing a dedicated fish finder on recreational or tournament fishing boats. Installation requires a thru-hull hole (typically 2.25 inches for this model class) and access to your battery and helm display; most boaters benefit from professional installation to ensure proper alignment and waterproofing. Compatibility depends on your existing sonar head unit—verify your display supports 80-130kHz medium-frequency input before purchase to ensure seamless integration and full feature access.