The Airmar R109LHW is a CHIRP-ready thru-hull transducer engineered for both inshore and offshore fishing applications. Its dual-band design pairs a 2 kW low-frequency band (38–75 kHz) for deep-water reach with a 1 kW high-wide frequency band (150–250 kHz) that maintains a fixed 25-degree beamwidth across all frequencies — delivering twice the coverage under the hull compared to conventional narrow-beam high-frequency transducers. Built into a urethane housing with an included fairing block, the R109LHW ships as bare wire with no connector pre-attached and features patented Xducer ID® technology for seamless sounder recognition.

Specifications:

• Acoustic Window: Epoxy/urethane
• Common Use: Fishing, commercial fishing
• Functions: Depth, fast-response water temperature
• High Frequency Band: 150–250 kHz
• High-Wide Beamwidth: 25 degrees (fixed, constant across all high frequencies)
• Low Frequency Band: 38–75 kHz
• Low-Frequency Beamwidth: 19–10 degrees port-starboard; 10–5 degrees fore-aft
• Total Bandwidth: 137 kHz from a single transducer
• Covered Fishing Frequencies: 50 kHz, 68 kHz, 200 kHz, plus all frequencies within the bandwidth
• Power Rating: 2 kW (low frequency); 1 kW (high frequency)
• Max Depth — Low Frequency: 1,829 m (6,000 ft)
• Max Depth — High-Wide Frequency: 152 m (500 ft)
• Housing Material: Urethane
• Acoustic Window Material: Epoxy/urethane
• Hull Material Compatibility: Compatible with all hull materials
• Mounting Style: Thru-hull
• Max Deadrise Angle: 22 degrees
• Max Vessel LOA: 9 m (30 ft) and above
• Single or Dual Frequency: CHIRP-ready dual-band
• Tilted Element: No
• Retractable Housing: No
• Connector: None — bare wire
• Includes: Fairing block
• Patented Xducer ID® Technology: Yes
• Weight: 15.1 kg (33.3 lb)

This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

Resources:

• Quick Start Guide (PDF)
• Product Brochure (PDF)