Airmar B150M – potapljajoča sonda iz brona 300W (95–155 kHz) z nagnjenim elementom (0°) + temperatura – (8 žic)

This Airmar B150M CHIRP transducer operates on a mid-band frequency range from 95 kHz to 155 kHz.

No, this transducer with a bronze housing is recommended for fiberglass or wooden hulls. It must never be installed on a metal hull due to the risk of electrolytic corrosion.

This Airmar B150M transducer has a 0° tilted element. This means it is designed for hulls with a deadrise angle between 0° and 7° at the mounting location.

Yes, this Airmar B150M transducer is equipped with a fast-response water temperature sensor.

This depth sounder is fitted with an 8-pin connector, compatible with the relevant Garmin devices.

To install this transducer, a 51 mm (2 inch) diameter hole must be drilled from the outside of the hull. For sandwich fiberglass hulls, a 60 mm (2-3/8 inch) hole is required from the inside of the hull.

Tilted-element CHIRP transducers offer several advantages:

The ceramic elements are tilted inside the housing to compensate for the hull’s deadrise angle, ensuring the beam is directed downward. They maximize echo returns and eliminate the need for a fairing block. Their low-profile design protrudes only 6 mm below the hull, making them ideal for towed or lifted boats. They provide superior resolution, precise fish detection, and better bottom-finding capability at high speeds.

The housing and nut of this depth sounder are made of bronze alloy. The cap is made of impact- and chemical-resistant plastic.

The ideal mounting location must meet the following criteria:

The water under the hull must be smooth, with minimal bubbles and turbulence.The depth sounder must be continuously immersed in water.The beam of the depth sounder must not be obstructed by the keel or propeller shaft.Choose a location away from interference sources (propeller, other machinery, other fishfinders, cables).For CHIRP depth sounders, mount it in a cool, well-ventilated area away from the engine to prevent overheating.

Yes, it can be installed on a cored fiberglass hull. However, this requires additional steps to seal the hull core to prevent water infiltration, using fiberglass and resin, or a cylinder, wax, tape, and casting epoxy resin.

The beam width (-3 dB) of this transducer varies with frequency:

Approximately 26° at 100 kHz.Approximately 20° at 130 kHz.Approximately 17° at 155 kHz.

Mid-frequency provides a good balance: it allows deeper sounding than high frequencies while offering better resolution than low frequencies. It also produces a wider beam than high frequencies, increasing coverage under the boat and the chances of finding fish, with clear images even at higher boat speeds.

Yes, applying water-based antifouling paint is mandatory on the depth sounder if the boat is used in saltwater, to prevent marine growth.

No, it is essential never to install a metal housing (such as bronze) on a vessel with a positive ground system, as this can cause electrolytic corrosion.