Airmar R111LH – õli- või pesasondi 2 kW CHIRP (38–75 kHz / 130–210 kHz) veesügavuse ja temperatuuri mõõtmine (paljad juhtmikud)

The Airmar R111LH transducer is a CHIRP dual-band 2 kW transducer designed for depth and water temperature detection. It operates on low frequencies from 38 to 75 kHz and high frequencies from 130 to 210 kHz, providing an extended coverage of 117 kHz bandwidth. It can be installed in an oil-filled housing or as a "pocket" mount. It is optimized for solid fiberglass hulls.

The Airmar R111LH transducer uses two distinct CHIRP frequency ranges:

A low frequency range from 38 to 75 kHz.A high frequency range from 130 to 210 kHz.This full coverage provides a total bandwidth of 117 kHz.

Yes, the Airmar R111LH transducer is equipped to detect water temperature in addition to depth.

The R111LH transducer can reach maximum depths of:

1829 meters (6000 feet) at low frequency (38-75 kHz).

457 meters (1500 feet) at high frequency (130-210 kHz).

Dual-band CHIRP means the transducer operates on two distinct frequency ranges (low and high) simultaneously or alternately. For the R111LH, this extended coverage of 117 kHz bandwidth delivers improved target detection, more precise bottom discrimination, and clear separation between baitfish and gamefish.

The beam widths of the Airmar R111LH depth sounder vary by frequency:

At low frequency (38-75 kHz): from 19° to 10° (port-starboard) and from 10° to 5° (bow-stern). At high frequency (130-210 kHz): from 8° to 4°.

Yes, thanks to its advanced CHIRP performance and wide bandwidth, the Airmar R111LH transducer provides excellent bottom discrimination and clear separation between baitfish and gamefish.

The Airmar R111LH transducer is designed exclusively for solid fiberglass hulls. It cannot transmit effectively through core materials such as foam or balsa wood.

The Airmar R111LH transducer is designed for an "in-hull" installation (inside the hull), specifically in an oil-filled housing or a "pocket" mount. For the oil-filled housing installation, it is placed in a reservoir filled with propylene glycol, secured inside the hull.

No, the Airmar R111LH oil-filled transducer (in-hull) does not require drilling the hull. It is mounted inside the hull in a liquid-filled tank.

When choosing the location, ensure that:

The fiberglass hull is solid (without air bubbles or coring materials).The area under the transducer will always be in contact with water.The water flow under the hull is as smooth as possible, with minimal bubbles and turbulence.The transducer beam will not be blocked by the keel or propeller shafts.The location is away from interference sources (propellers, other machinery, other sounders, cables).The area is cool and well-ventilated, away from the engine compartment to prevent overheating of the liquid.

Propylene glycol should be used for the oil bath. It is a non-toxic antifreeze/coolant suitable for marine applications and recreational vehicles (RVs).

The maximum acceptable deadrise angle for installing the Airmar R111LH transducer is 12° on the long side of the hull and 22° on the short side of the hull.

To secure the transducer housing to the hull, recommended bonding materials include fiberglass resin (such as Bondo 401 or West Marine #1937762), Marine-Tex epoxy putty, or 3M™ Marine 5200 adhesive/sealant.

Yes, CHIRP transducers like the R111LH generate more heat than traditional transducers. Incorrect installation, particularly in a hot area such as the engine compartment, or if the transducer is not fully submerged in liquid, can cause overheating and transducer failure. The liquid temperature in the tank must not exceed 60°C (140°F).

The Airmar R111LH transducer is supplied with bare wires. This means it does not have a pre-installed connector and requires proper wiring and termination to connect to your equipment.

Yes, the Airmar R111LH transducer is recommended for high-speed boats, provided it is installed in an area where the water flow under the hull is as smooth as possible, with minimal bubbles and turbulence.