Airmar B265LM Transducer CHIRP 1kW Thru-Hull

Overview

Built for anglers running 25-foot boats and larger who need serious depth performance and crisp fish separation across multiple frequencies. Whether you're working deep structure, suspended baitfish, or game fish at mid-depth, this transducer handles it all from one thru-hull installation.

The B265LM is a 1 kW Chirp broadband transducer that covers 73 kHz of total bandwidth — low frequency (42–65 kHz) for deep water and structural detail, plus medium frequency (85–135 kHz) for precise target separation and faster refresh rates. The included high-performance fairing block keeps the signal clean even at speeds over 30 knots, and the bronze housing is built to last in saltwater and freshwater alike.

Key Features

• Dual-frequency Chirp broadband coverage — 73 kHz of continuous bandwidth lets you dial in 50, 88, 107 kHz, and everything in between, giving your electronics the raw data to show you exactly what's below the boat.
• 1 kW power output — pure wattage means excellent bottom penetration and target definition in deep water (up to 3,000 feet on low frequency), plus crisp separation between bait and game fish at any depth.
• Low frequency 42–65 kHz with 25° to 16° beamwidth — covers deep structure and finds fish suspended below thermoclines; wider cone angle at lower power helps you search large areas efficiently.
• Medium frequency 85–135 kHz with 16° to 11° beamwidth — tighter cone gives you precise target detail and better bottom definition at mid-depths (up to 1,500 feet); faster transducer response for real-time bait-and-fish separation.
• High-performance fairing block included — smooths water flow over the transducer face, eliminating noise and signal loss at cruise speeds above 30 knots so your screen stays clean in open water.
• Fast-response water temperature sensor — built-in temp reading helps you track seasonal patterns and locate thermoclines where fish congregation.
• Xducer ID technology — automatic transducer recognition in compatible Airmar-linked systems eliminates manual configuration errors.

Specs & What's Included

Compatibility: This is a thru-hull transducer for fiberglass or wood hulls with deadrise up to 20° (with fairing). It is recommended for boats 25 feet and larger. You'll need to purchase a compatible transducer cable separately — this is a Mix & Match unit, so verify your fishfinder's cable connector type before ordering. Not sure if this works with your setup? Call or text us at (833) 831-4077 — we'll tell you straight.

In the Box: B265LM bronze thru-hull transducer housing, high-performance fairing block, and integrated depth and water-temperature sensor. Transducer cable sold separately.