AIRMAR® B175M, 20° tilt

This is a 1 kW through-hull CHIRP transducer designed for underwater detection. It provides accurate readings of depth and water temperature, essential for navigation and fishing. The housing is made of bronze and it features a fixed 20-degree tilted element.

The Garmin AIRMAR B175M transducer has a power output of 1 kW (1000 Watts). This high power enables reliable detection and clear returns in deeper waters.

The B175M is a Medium CHIRP transducer. It operates across a frequency range from 85 kHz to 135 kHz.

This transducer provides accurate depth data along with water temperature information, thanks to its integrated sensor.

CHIRP technology sends a continuous sweep of frequencies, from the lowest to the highest, instead of a single fixed frequency. This provides better target separation, increased resolution, and clearer, more detailed images of the seabed and fish.

The AIRMAR B175M transducer housing is made of bronze. This material is robust and ideal for fiberglass or wooden hulls, providing excellent durability and corrosion resistance in a marine environment.

The beam angle of the B175M transducer varies depending on the frequency used. It is typically around 16° to 11° for the 85 to 135 kHz frequency range, providing a good balance between coverage and detail detection.

M (Medium CHIRP): Operates in a mid-frequency range (85-135 kHz for the B175M). It provides a good balance between depth coverage and detail detection, ideal for coastal fishing and mid-depth waters.
L (Low CHIRP): Low frequencies (e.g., 25-50 kHz). Excellent for deep waters and pelagic fish detection, but with less detail.
H (High CHIRP): High frequencies (e.g., 150-250 kHz). Offers exceptional target resolution and separation for shallow waters and fish detection near the seabed, but with limited depth range.

Yes, thanks to its mid-range CHIRP technology and 1 kW power output, the B175M provides excellent capability to detect and distinguish seafloor structures such as rocks, wrecks, seagrass beds, and substrate variations with high clarity.

The 20° tilt refers to the fixed angle of the transducer element inside the housing. This tilt is designed to compensate for the deadrise angle of your boat's hull, ensuring the sonar beam is directed straight to the bottom for optimal returns. It is suitable for hulls with a deadrise angle of 16° to 24°.

This transducer is of the "through-hull" type. This means it requires drilling a hole in the boat's hull for installation, where the transducer body passes through and is secured from both the inside and outside.

Yes, the transducer is usually supplied with the hardware required for through-hull installation, including nuts, washers, and sealing gaskets. It is recommended to verify the exact contents of the packaging.

No, transducers with a bronze housing such as the B175M are not recommended for aluminum hulls. Direct contact between bronze and aluminum can cause galvanic corrosion. For aluminum hulls, it is preferable to use transducers with a stainless steel or plastic housing.

For optimal performance, the transducer must be installed in an area of the hull where the water flow is smoothest, with minimal turbulence (air bubbles). Avoid zones near propellers, keels, water intakes, or any other elements that could disrupt the flow. It must be mounted away from electrical interference.

The B175M transducer is a "tilt" (angled) model with a fixed 20° angle. It is designed for flush-mount installation on hulls with a corresponding deadrise angle (16° to 24°). A fairing block is typically not required for this type of transducer if the hull angle is suitable, as the tilt is already built-in to direct the beam downward.

This transducer is equipped with an 8-pin Garmin connector. It is designed to plug directly into compatible Garmin fishfinders or fishfinder modules.

The AIRMAR B175M transducer is compatible with Garmin fishfinders and fishfinder modules featuring CHIRP technology and an 8-pin transducer port. This typically includes the GPSMAP, ECHOMAP Ultra series, and some GSD fishfinder modules. It is always recommended to verify specific compatibility with your Garmin device model.

This depends on your Garmin device. Some newer Garmin GPS/fishfinder combos include a CHIRP sonar module. For other models or improved performance, an external Garmin sonar module (such as the GSD series) may be required. Check your Garmin device specifications.

No, the AIRMAR B175M transducer is specifically designed for CHIRP technology. It will not work correctly, or at all, with traditional fishfinders that do not use CHIRP technology and are not compatible with CHIRP transducers.