Airmar B265LM - Bronzová průchozí sonda 1 kW CHIRP (42–65 kHz/85–135 kHz) s podložkou + teplota – (holé vodiče)

The Airmar B265LM transducer is a bronze through-hull 1 kW transducer using CHIRP technology. It operates on two frequency bands, low (42–65 kHz) and medium (85–135 kHz), and includes a temperature sensor. It is designed for mid to deep water fishing, providing precise target separation and bottom discrimination.

The Airmar B265LM transducer uses dual-band CHIRP (Compressed High-Intensity Radiated Pulse) technology. This technology enables precise target separation and seabed discrimination, providing higher resolution and detail compared to fixed-frequency transducers.

The B265LM transducer operates on two distinct frequency bands:

A low frequency from 42 to 65 kHz. A mid frequency from 85 to 135 kHz. Combined, these two bands provide a total CHIRP bandwidth of 73 kHz.

The Airmar B265LM transducer is optimized for different depths depending on the frequency band used:

The low-frequency band (42 to 65 kHz) is designed for depths up to 914 meters (3,000 feet). The mid-frequency band (85 to 135 kHz) is effective for maximum depths of 457 meters (1,500 feet).

The Airmar B265LM transducer has a transmit power of 1 kW.

Yes, the Airmar B265LM transducer is equipped with an integrated water temperature sensor.

The Airmar B265LM transducer housing is made of bronze.

The B265LM transducer offers different beam angles depending on the frequency band:

The low-frequency band (42 to 65 kHz) has a beam ranging from 25° to 16°. The mid-frequency band (85 to 135 kHz) has a wider beam, ranging from 16° to 11°.

Yes, applying an antifouling coating such as Foulfree is certified by Airmar and does not result in any loss of performance for the transducer. This type of coating is non-toxic, durable (up to two years), and prevents the adhesion of marine organisms.

The Airmar B265LM transducer is supplied with bare wires, meaning the transducer cable is not terminated with a specific connector and will need to be wired according to the requirements of the compatible sonar device.

The Airmar B265LM transducer, being made of bronze, is recommended for fiberglass or wooden hulls only.

No, it is essential never to install a bronze transducer on a metal hull, as this would cause electrolytic corrosion. The Airmar B265LM transducer is recommended for fiberglass or wooden hulls.

No, it is imperative never to install a metallic transducer (such as the B265LM in bronze) on a boat equipped with a positive ground system.

The Airmar B265LM transducer is a thru-hull type with a fairing. It is installed entirely outside the hull, with a cable hole drilled through. The active face and sides of the transducer are submerged in water.

For the installation of the Airmar B265LM transducer, a 33 mm or 1-5/16" hole is required for the transducer to pass through. A 3 mm or 1/8" pilot hole must be drilled beforehand.

Using a fairing block is highly recommended if the hull deadrise angle exceeds 10°. The fairing block allows the sound beam to be directed straight down by mounting the transducer parallel to the water surface and ensures clean water flow under the transducer face.

Installing the anti-rotation bolt is mandatory when securing the depth sounder shoe. This bolt firmly holds the shoe in place and prevents it from rotating when the boat is underway, thus avoiding violent movements and loss of directional control.

For optimal performance, the transducer must be installed in an area where the water flow under the hull is smooth, with minimal bubbles and turbulence, especially at high speed. The transducer must remain continuously immersed, and its beam must not be obstructed by the keel or propeller shafts. It is recommended to install it at least 300 mm (1 foot) from a keel and away from interference sources such as propellers or water intakes.

CHIRP transducers generate more heat than traditional transducers. To prevent overheating and transducer failure, it is crucial to always use the transducer submerged in water. Never operate the transducer in air. Installation must comply with the manufacturer's instructions to ensure adequate heat dissipation.

Yes, applying a water-based antifouling paint is mandatory in saltwater to maintain the performance of the depth sounder by preventing marine growth. It is important to use paint compatible with transducers and never to use aggressive solvents.