Airmar B150M – bronzová průchozí sonda 300W (95–155 kHz) s nakloněným prvkem (0°) + teplota – (8 pinů)

This CHIRP Airmar B150M transducer operates on a mid-frequency band, ranging 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 features 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 fitted with a fast-response water temperature sensor.

This transducer has an 8-pin connector, compatible with the relevant Garmin devices.

For installing this transducer, a 51 mm (2 inch) diameter hole must be drilled from the outside of the hull. For fiberglass sandwich 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-resistant and chemical-resistant plastic.

The ideal mounting location must meet the following criteria:

Water under the hull must be smooth, with minimal bubbles and turbulence.The transducer must remain continuously submerged.The transducer beam must not be obstructed by the keel or propeller shaft.Choose a location away from interference sources (propeller, other machinery, other sounders, cables).For CHIRP transducers, mount them in a cool, well-ventilated area away from the engine to prevent overheating.

Yes, it can be installed on a fiberglass sandwich hull. However, this requires additional steps to seal the hull core to prevent water ingress, 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.

The mid-range frequency offers a good balance: it allows for deeper sounding than high frequencies while providing 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 a water-based antifouling paint is mandatory on the transducer if the boat is used in saltwater, to prevent marine growth.

No, it is imperative never to install a metal housing (such as bronze) on a vessel equipped with a positive grounding system, as this can lead to electrolytic corrosion.