Airmar B258 - Dýptarmælir með gegnumstreymi, brons, 1kW (50/200kHz) + hitastig - (8 stift)

The GARMIN Airmar B258 is a 1 kW bronze through-hull 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-water fishing and precise seabed detection.

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

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

At 50 kHz, the transducer 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 greater 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 improved underwater resolution.

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

The Airmar B258 bronze through-hull transducer is recommended for fiberglass 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 mounted on a metal hull. This could cause electrolytic corrosion.

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

The maximum deadrise angle (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, installation of 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 inch.

The keel fin must be installed parallel to the keel. The end of the keel fin with the arrows or 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 Foulfree coating does not result in any loss of depth sounder performance. 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 always fully submerged. It should be at least 300 mm (1 foot) away from the keel and propellers/shafts to avoid interference. On powerboats, it is typically placed just forward and to the side of the engines, or ahead of the propellers for inboards.

Yes, it is imperative to immediately check for leaks once the boat is launched. Do not leave the boat unattended for more than three hours after launching, as even a small leak can accumulate a significant amount of water.