Garmin AIRMAR R109LM

Garmin AIRMAR R109LM

Garmin AIRMAR R109LM are  a high-performance, 2kW CHIRP thru-hull marine transducer with a fairing block, designed for deep-water commercial and recreational fishing. It provides both depth and fast-response water temperature readings and is compatible with large boats (40 feet and above) with fiberglass, wood, or metal hulls

Garmin AIRMAR R109LM Key Features

• Technology: Uses CHIRP technology (chirped, frequency-swept pulses) to deliver 5 to 10 times greater detail and resolution than traditional sonar frequencies, allowing for precise distinction between individual baitfish, game fish, and underwater structures.
• Frequency Range: Operates in two distinct bandwidths for a total of 87 kHz of bandwidth:
  • Low Frequency: 38 kHz to 75 kHz (depth performance up to 1,829 m or 6,000 ft).
  • Medium Frequency: 80 kHz to 130 kHz (depth performance up to 914 m or 3,000 ft).
• Power: Rated for 2kW of power, providing excellent deep-water performance.
• Mounting: It is a thru-hull mount transducer made of durable urethane with a high-performance fairing block included for optimal water flow and performance.
• Beamwidth: Features a variable beamwidth (Low: 10°-5° fore-aft, 19°-10° port-starboard; Mid: 13°-8° port-starboard).
• Compatibility: Designed for a range of hull types (fiberglass, wood, or metal) and is adaptable to hull deadrise angles from 0° to 25°.
• Connectivity: Features bare wire ends for connection to a compatible Garmin marine network sonar black box or chartplotter (transducer pin connector is not included).
• Function: Provides depth and fast-response water-temperature sensor data. It also incorporates Airmar's exclusive Xducer ID® technology, which provides compatible Garmin systems with the specific transducer information.

Garmin AIRMAR R109LM FAQs

• What type of boat and hull is it for? It is designed for larger vessels, specifically boats 40 feet (12 m) and above. It is compatible with fiberglass, wood, or metal hulls.
• Does it come with a connector?  No, the 
  Garmin AIRMAR R109LM  (part number 010-12809-20) typically comes with bare-end wires. You will need to purchase the appropriate Garmin connector cable or terminal block adapter to match your specific Garmin sonar module or chart plotter.
• What are the beamwidths? In low frequency, the beamwidth is 19° to 10° port-starboard and 10° to 5° fore-aft. In medium frequency, the beamwidth is 13° to 8°.
• Can I install it myself? Thru-hull installation involves drilling a hole through the hull and requires precise placement and sealing to avoid issues. It is often recommended to seek the advice of a professional installer, especially for a high-value, performance-oriented transducer like this.
• How does CHIRP technology improve fishing? CHIRP technology provides 5 to 10 times greater detail and resolution than traditional fixed-frequency sounders. This precision allows you to distinguish between individual baitfish, game fish, and underwater structures with much greater clarity, especially in deep water.
• Does it include a speed sensor? No, this model includes only depth and temperature sensors. A separate speed sensor would be required if that data is needed.