Garmin Airmar B75M 20° – CHIRP thru-hull transducer, bronze

Garmin Airmar B75M 20° – CHIRP thru-hull transducer for depth and temperature

The Airmar B75M is a thru-hull transducer made of bronze, permanently mounted in the boat's hull, designed to work with fishfinders that support wideband CHIRP sonar, for example with the Garmin GSD 26 module. This variant has a 20° tilt angle, which fits it to hulls with a suitable deadrise angle.

Installation and compatibility

The transducer has an 8-pin connector, so it connects directly to a fishfinder or to the Garmin Marine Network, to which it sends both depth and water temperature readings. Thru-hull mounting means seating the transducer in a hole in the bottom of the boat, which usually gives a cleaner signal than solutions glued on the inside.

CHIRP operation

CHIRP sonar support lets you choose between a classic, single frequency band and wideband scanning, which translates into clearer separation of targets underwater with a compatible fishfinder.

Specifications