Airmar B75C-20-M CHIRP 1kW Bronze Thru-Hull Transducer with Humminbird Connectors.

Airmar B75C 20° Tilt Medium-Frequency CHIRP Thru-Hull Transducer – Humminbird Compatible

The Airmar B75C-20-M is a 1 kW medium-frequency CHIRP-ready transducer designed for vessels with hull deadrise between 16° and 24°. Featuring a 20° tilted ceramic element, this transducer installs nearly flush to the hull, minimizing drag while delivering excellent sonar performance. It operates over a CHIRP frequency range of 80–130 kHz with 50 kHz bandwidth, achieving clear target separation, mid-depth coverage, and wide fish-finding capability under the boat.

Integrated fast-response temperature sensing and exclusive Xducer ID® technology ensure compatibility and ease of installation with Humminbird units using Mix-N-Match 9-pin or 14-pin cables. The bronze housing is designed for fiberglass or wood hulls and optimized for offshore fishing environments.

Key Features

• CHIRP frequency range: 80–130 kHz

• Beamwidth: 24° to 16°

• 20° tilted element for hull deadrise from 16° to 24°

• Maximum depth: 900 ft (274 m)

• Suitable for detecting fish near the bottom or suspended

• Robust bronze housing

• Fast-response temperature sensor

• Exclusive Xducer ID® technology for automatic sonar setup

Model Variants

What’s in the Box

• B75C-20-M transducer assembly

• Mix-N-Match 9-pin or 14-pin connector cable

• Plastic transom mounting hardware