Airmar R111LH - Sonde bain d’huile 2kW CHIRP (38-75kHz / 130-210kHz) + température – (Fils nus) - Garmin

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Garmin

010-11643-20

Airmar R111LH - Oil-filled 2kW CHIRP transducer (38-75kHz / 130-210kHz) + temperature – (bare wires)

The Garmin Airmar R111LH transducer is a CHIRP 2 kW dual-band (38-75kHz / 130-210kHz) depth and temperature transducer designed for oil-filled installation on solid fiberglass hulls. It provides targeted detection down to 1829m (6000 feet) at low frequency and 457m (1500 feet) at high frequency without hull penetration, ideal for offshore fishing and high-speed boats. This model is supplied with a plastic mounting tank, a gasket, four hex-head bolts with locking washers, and a 15m bare-wire cable.

Retail priceBenefit from the professional rate

£2,609.22 GBP

£2,609.22 GBP ~~£3,328.93 GBP~~

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Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

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Support service

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Technical specifications

Supported sonar technologies	CHIRP
Operating voltage	Powered by depth sounder module
Fishfinder frequencies	38-75, 130-210
Operating temperature	-10 to 60
Peak power	2000.0
Sonar connector type	Bare wires
Cable length	10.0
Compatible displays	Garmin GSD 26 fishfinder module; Garmin GPSMAP series 4xxx, 5xxx, 6xxx, 7xxx, 8xxx, 74xx, 76xx multifunction displays (via GSD 26)
Product width	225
Product height	231
Product depth	436
Bus compatibility	Owner (Airmar Xducer ID®)
Wired network	Bare wires (to depth sounder module)
Wireless connectivity	No
Mounting type	Oil bath
Certifications	CE
Temperature measurement range	-10 to 60 °C
Max depth reading	1829.0
Transducer material	Plastic
Integrated temperature sensor	Yes
Active Area Cm2	144.6
Beam coverage angle	5-19
Beam Width At 38khz 3db	10 (bow-stern) / 19 (port-starboard)
Beam Width At 75khz 3db	5 (fore-aft) / 10 (port-starboard)
Beam Width High Frequency 3db	From 8° to 4°
CHIRP high frequency	130-210
CHIRP low frequency	38-75
Deadrise angle compatibility	Up to 12° (long side) / 22° (short side)
Fishing type	Sea
Housing material	Nylon
Hull Material Compatibility	Solid fiberglass
Integrated speed sensor	No
Q Factor	2.5
Radiating Surface Material	Urethane
Release year	2020.0
Tank Liquid Type	Propylene glycol (marine/RV non-toxic antifreeze)
User level	Expert
Warranty	2.0

Detailed description

Designed for professional fishermen and demanding recreational boaters, the Airmar R111LH transducer by Garmin is a 2 kW dual-band CHIRP transducer optimized for solid fiberglass hulls. It provides depth and water temperature detection without hull drilling, thanks to oil-filled or "pocket" mounting.

Advanced CHIRP Performance

The R111LH operates on two distinct CHIRP frequency ranges: a low frequency from 38 to 75 kHz and a high frequency from 130 to 210 kHz. This extended coverage, totaling 117 kHz of bandwidth, enables improved target detection, precise bottom discrimination, and clear separation between baitfish and gamefish. With a 2 kW power output, the transducer reaches maximum depths of 1829 meters (6000 feet) in low frequency and 457 meters (1500 feet) in high frequency. While some sources cite a general maximum depth of 2438 meters (8000 feet) for 2 kW transducers, the specific performance figures are those indicated per frequency band. Its beam widths range from 19° to 10° (port-starboard) and 10° to 5° (bow-stern) in low frequency, and from 8° to 4° in high frequency, ensuring coverage suited to various depths and fishing scenarios.

Installation and Compatibility

This transducer is specifically designed for solid fiberglass hulls, excluding sandwich (foam or balsa core) hulls. Oil-filled installation is facilitated by a plastic reservoir that can be adjusted to compensate for hull deadrise angles up to 22° on the short side and 12° on the long side. This installation method is particularly advantageous for high-speed boats, multihulls, or trailable vessels, as it preserves hull integrity and reduces hydrodynamic drag. The R111LH is compatible with various propulsion systems, including inboard, I/O, outboard, and jet-drive engines. Supplied with a 15-meter (49-foot) bare-wire cable, it is ready for integration with compatible sonar modules such as the Garmin GSD 26, fully leveraging Airmar’s Xducer ID® technology.

Documentation

Type	Nom
	Installation Guide - Airmar In-Hull 2-3kW CHIRP Depth Sounder Installation Instructions
	Installation Notice - Installation Supplement for Airmar CHIRP Transducers
	Technical Drawing - Airmar R599 / R111 Sonar Technical Drawing
	Technical Reference - Airmar CHIRP 38-75 / 130-210 kHz Fishfinder Specifications
	Technical Brochure - Airmar CHIRP In-Hull Transducers
	Wiring diagram - Airmar transducer wiring diagram
	Wiring diagram - Airmar transducer wiring diagram

Expert opinion

Pol CONIN

Digital Manager

« Airmar R111LH: 2kW CHIRP oil-filled transducer option for solid hulls without drilling »

The Airmar R111LH transducer is a relevant solution for fiberglass vessels where owners require 2 kW CHIRP detection without compromising hull structural integrity. Its oil-filled installation is a major advantage, particularly for high-speed boats where the drag of a through-hull transducer could be a limiting factor, or for multihulls and towed units where the simplicity of non-drilling installation is appreciated.

This model serves as an alternative to through-hull transducers of equivalent power (e.g., Airmar R109LH), offering unique installation flexibility. It is critical to ensure the hull is solid fiberglass, without balsa or foam core, as transmission through non-homogeneous composite materials would significantly degrade acoustic performance. The chosen location must be free of turbulence, away from propellers and water intakes, and in a well-ventilated area to prevent overheating of the propylene glycol in the reservoir, which could impact long-term reliability.

The bare-wire cabling requires expert integration with a compatible fishfinder module, such as the Garmin GSD 26, to fully utilize the CHIRP low and high-frequency capabilities. While offering impressive deep detection performance (up to 1829m at low frequency), a slight signal attenuation compared to a directly immersed transducer must be noted. However, for many sport and commercial fishing applications in offshore environments, this drawback is largely outweighed by the ease of installation and hull preservation.

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Airmar R111LH - Oil-filled 2kW CHIRP transducer (38-75kHz / 130-210kHz) + temperature – (bare wires)

£2,609.22 GBP

£2,609.22 GBP ~~£3,328.93 GBP~~

Frequently Asked Questions

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What are the main features of the Airmar R111LH transducer?

The Airmar R111LH transducer is a 2 kW CHIRP dual-band 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 either in an oil-filled housing or as a "pocket" mount. It is optimized for solid fiberglass hulls.

Which CHIRP frequencies does the Airmar R111LH transducer use?

The Airmar R111LH transducer uses two distinct CHIRP frequency ranges:

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

Can the Airmar R111LH transducer measure water temperature?

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

What is the maximum detection depth of the R111LH transducer?

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).

What is dual-band CHIRP and what are its advantages for this depth sounder?

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 provides improved target detection, more precise bottom discrimination, and clear separation between baitfish and gamefish.

What are the beam widths of the Airmar R111LH depth sounder?

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°.

Is the Airmar R111LH transducer suitable for detecting baitfish and gamefish?

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.

Which hull types are compatible with the Airmar R111LH transducer installation?

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

How is the Airmar R111LH transducer installed on the boat?

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

Is it necessary to drill the hull to install the Airmar R111LH oil-filled transducer?

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

What precautions should be taken when choosing the installation location for the depth sounder?

When selecting the installation location, ensure that:

The fiberglass hull is solid (no air bubbles or core materials).The area beneath 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 fishfinders, cables).The area is cool and well-ventilated, away from the engine compartment to prevent overheating of the liquid.

Which fluid should be used for the oil bath of the Airmar R111LH transducer?

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

What is the maximum deadrise angle acceptable for installing the Airmar R111LH transducer?

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

Which materials are recommended for securing the depth sounder transducer to the hull?

To secure the depth sounder transducer 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.

Can the Airmar R111LH transducer overheat if not installed correctly?

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 failure. The liquid temperature in the tank must not exceed 60°C (140°F).

Is the Airmar R111LH transducer cable pre-connected or does it come with bare wires?

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.

Is this transducer recommended for high-speed boats?

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.