Raymarine B75M 600W Medium Frequency CHIRP Transducer - Bronze Through-Hull with 20° Tilt

Advanced Medium Frequency CHIRP Technology

The B75M utilizes cutting-edge CHIRP (Compressed High-Intensity Radar Pulse) sonar technology to deliver unparalleled underwater imaging clarity. Unlike traditional single-frequency transducers, the B75M transmits across a broad 80-130 kHz frequency band, providing up to 50 kHz of total bandwidth in a single installation. This wide frequency sweep produces highly detailed fish arches, superior bottom structure definition, and exceptional target separation capabilities.

Professional Bronze Through-Hull Construction

Built with marine-grade bronze construction, the B75M transducer offers exceptional durability and corrosion resistance in both fresh and saltwater environments. The bronze material provides superior acoustic transmission properties while maintaining long-term reliability in harsh marine conditions.

Low-Profile Design Benefits

• Minimal Hull Protrusion: Extends less than 6.35mm (0.25") outside the hull
• Reduced Drag: Streamlined profile minimizes impact on boat performance
• 20° Tilted Element: Compensates for hull deadrise angles between 16-24 degrees
• Flush Installation: Professional appearance with nearly flush mounting

Precision Deadrise Angle Compensation

The B75M features a precisely engineered 20-degree tilted element that automatically corrects for hull deadrise angles ranging from 16 to 24 degrees. This built-in angle compensation ensures the sonar beam projects directly downward regardless of your boat's hull configuration, maximizing sonar performance and fish detection accuracy.

Dual Sensor Technology

Beyond superior sonar performance, the B75M incorporates a fast-response water temperature sensor, providing critical environmental data for fishing success. This dual-sensor design delivers both depth/fish detection and real-time temperature monitoring in a single, compact installation.

Versatile Installation Options

The B75M offers flexible installation configurations to match your boat's specific requirements and fishing needs:

Single Transducer Installation

Install one B75M with the included Single Operation Cable for comprehensive medium-frequency CHIRP coverage. This configuration is ideal for most recreational fishing applications and provides excellent performance for boats up to 25 feet in length.

Paired Transducer Option

For maximum sonar coverage, pair two B75 series transducers using Raymarine's Paired CHIRP Transducer Y-Cable (A102146, sold separately). This configuration allows combining different frequency bands for comprehensive water column coverage.

Optimal Boat Applications

The B75M is specifically engineered for smaller to medium-sized vessels requiring professional-grade sonar performance:

• Center Console Boats: Perfect fit for popular center console designs
• Sport Fishing Vessels: Ideal for fast, trailered sport fishing boats
• Bay Boats: Excellent for shallow to medium-depth fishing
• Trailerable Boats: Low-profile design suitable for trailering
• Boats up to 25 feet: Optimal size range for this transducer

Technical Specifications

Professional Installation Considerations

The B75M requires through-hull installation, which should be performed by qualified marine technicians. Proper installation ensures optimal performance, waterproof integrity, and compliance with marine safety standards.

Compatible Raymarine Systems

The B75M transducer integrates seamlessly with Raymarine's complete line of multifunction displays and fishfinder systems, including:

• Axiom Series multifunction displays
• Element Series fishfinder/GPS combos
• Dragonfly Series portable fishfinders
• Classic fishfinder and chartplotter systems

Quality Assurance and Warranty

Backed by Raymarine's comprehensive 2-Year Limited Warranty, the B75M represents proven reliability and performance in marine sonar technology. This warranty covers both the transducer assembly and the integrated temperature sensor, ensuring long-term dependable operation. Extended 3-year warranty available through product registration.