Airmar B258 – Átmenő bronz halászsugárzó 1 kW (50/200 kHz) + vízhőmérséklet-érzékelő (8 pólusú)

The GARMIN Airmar B258 transducer is a bronze through-hull 1 kW transducer operating at 50/200 kHz frequencies. It includes a water temperature sensor and connects via an 8-pin connector. It is designed for deep-sea fishing and precise seabed detection.

The GARMIN Airmar B258 transducer has a transmit power of 1 kW (1000 Watts).

This transducer operates at dual frequencies of 50 kHz and 200 kHz.

At 50 kHz, the depth sounder can reach depths of 441 to 670 meters. At 200 kHz, it can detect down to 294 meters.

Yes, the GARMIN Airmar B258 transducer includes a water temperature sensor.

The B258 transducer integrates four ceramic elements, giving it a sensitivity 25 times higher than a single-element 50/200 kHz 600 W transducer.

The beams are elliptical. At 50 kHz, the angles are 14°x23° or 15°x21°. At 200 kHz, the angle is 3°x5°.

The Airmar B258 transducer is designed for vessels 9 meters and longer, requiring greater range and better underwater resolution.

The B258 is positioned as a robust alternative to the CHIRP transducers in the B265/B275/B285 series for users who prefer traditional high-power fixed frequencies.

The Airmar B258 through-hull bronze transducer is recommended for fibreglass or wooden hulls only.

The B258 transducer is equipped with an 8-pin connector for connection to your compatible Garmin equipment.

No, a bronze transducer like the B258 must never be installed on a metal hull. This could lead to electrolytic corrosion.

A high-performance fairing is highly recommended if the hull deadrise angle exceeds 10°. It directs the sonar beam downward and ensures clean water flow under the transducer, optimizing performance.

The maximum deadrise angle for installing the B258 transducer with a fairing is 26°.

For the B258 transducer, the main hole to drill in the hull must be 30 mm or 1-3/16 inches. A pilot hole of 3 mm or 1/8 inch is recommended initially.

Yes, installing the anti-rotation bolt is mandatory with the high-performance fairing. This bolt firmly secures the fairing in place and prevents it from rotating during navigation. The hole for this bolt must be 14 mm or 9/16 inches.

The fairing must be installed parallel to the keel. The end of the fairing with the arrows or the triangular cutout must always point toward the bow of the boat.

It is recommended to use a water-based antifouling paint, mandatory in saltwater. Airmar certifies that applying a Foulfree coating does not result in any performance loss for the transducer. This coating is non-toxic, creates an ultra-smooth surface, and prevents marine growth from adhering, ensuring optimal performance.

The transducer must be installed in an area with smooth water flow, minimal bubbles and turbulence, and must always be submerged. It should be at least 300 mm (1 foot) away from the keel and propellers/shafts to avoid interference. For powerboats, it is typically placed just forward and to the side of the engines, or forward of the propellers for inboards.

Yes, it is imperative to immediately check for any leaks when the boat is launched. The boat should not be left unattended for more than three hours after launch, as even a small leak can accumulate a significant amount of water.