B75M BB THprofilirana 12°

This is a bronze through-hull transducer designed for boats, using CHIRP mid-band (M) technology for precise bottom detection and improved target separation. Its 12° angled element is ideal for hulls with a deadrise angle of 8 to 15 degrees.

The 'M' indicates that the transducer operates on a medium-frequency band (Medium CHIRP), typically between 80 and 130 kHz. This provides a good balance between deep penetration and detail resolution for various fishing and navigation applications.

CHIRP technology sends a sweep of frequencies across a wide band rather than a single fixed frequency. This results in superior image resolution, better target separation (fish, structures), and more reliable detection at various depths, providing a clearer and more detailed view of the seabed.

Thanks to its medium-frequency band, the B75M fishfinder is versatile and suitable for a variety of fishing, including coastal and moderate offshore fishing. It provides a good balance for detecting fish and bottom structures at medium depths.

The Raymarine B75M transducer has a power rating of 600 watts (RMS).

Maximum detection depth depends on water conditions (salinity, temperature, clarity) and the fishfinder system it is connected to. However, the B75M is generally effective for depths up to approximately 250 meters (800 feet) in optimal conditions.

The beam angle of the B75M transducer is variable across its mid-frequency range. It is typically 16–24 degrees at 80 kHz and 11–16 degrees at 130 kHz, providing coverage suited to different depths.

The Raymarine B75M BB THprofiled 12° (A80034) transducer is made of bronze, a durable and corrosion-resistant material, ideal for marine environments.

No, this bronze transducer is not recommended for aluminum or steel hulls due to galvanic corrosion risks. It is specifically designed for fiberglass or wood hulls.

Yes, the B75M transducer is designed to operate efficiently in both fresh water and salt water, delivering reliable performance across various marine environments.

'THprofilée' means faired through-hull. The transducer element is tilted at 12 degrees inside the housing. This compensates for the hull's deadrise angle, ensuring the sonar beam is directed vertically toward the seabed without requiring an external fairing block.

This depth sounder is specifically designed for fiberglass hulls with a deadrise angle between 8 and 15 degrees. The 12-degree internal tilt of the element compensates for this angle.

No, one of the main advantages of this 'fairing' transducer is that it already incorporates the 12-degree correction angle. It is designed to be installed directly on the hull without requiring an external fairing block, which reduces drag and simplifies installation.

Installing a through-hull transducer requires drilling a hole in the hull and meticulous sealing. While an experienced sailor can perform the task, it is strongly recommended to hire a qualified professional to ensure a correct and watertight installation, thus avoiding any risk of leakage.

The transducer must be installed in an area free of water turbulence, away from propellers, keels, other transducers, or any other obstruction that could disrupt the sonar beam. Ideally, it should be placed in the forward third of the hull, on a flat and smooth surface.

No, the B75M transducer is a CHIRP transducer and requires a compatible CHIRP fishfinder module or multifunction display to operate correctly. It will not work with traditional single-frequency fishfinders.

Yes, the Raymarine B75M BB TH profiled 12° transducer is covered by Raymarine’s standard manufacturer warranty.