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Raymarine R109 Low-Medium (A80040) is a commercial-grade 2 kW dual-channel CHIRP thru-hull transducer designed for extreme deep-water sports fishing and commercial offshore operations. Featuring 16 internal ceramic elements housed in a heavy-duty urethane housing with a high-performance fairing block, it combines a Low-frequency CHIRP band (38 kHz to 75 kHz) for depth penetration down to 6,000 ft with a Medium-frequency CHIRP band (80 kHz to 130 kHz) providing wide-coverage visibility down to 3,000 ft. Its dual-frequency capabilities deliver target resolution across the entire water column in deep-sea conditions.
| Specification | Details |
| Part Number (SKU) | A80040 |
| Model | R109 Low-Medium Thru-Hull CHIRP Transducer |
| Mounting Type | Thru-Hull (Includes high-performance cuttable fairing block) |
| Housing Material | Heavy-Duty Epoxy / Urethane with Stainless Steel Stem |
| Hull Material Compatibility | Fiberglass, Metal, or Wood hulls (Requires isolation fairing kit for metal hulls) |
| Hull Deadrise Compatibility | Up to 25° Deadrise (using included fairing block) |
| Power Rating | 2 kW RMS |
| Operating Frequency |
• Low-Band CHIRP: 38 kHz to 75 kHz • Medium-Band CHIRP: 80 kHz to 130 kHz |
| Beam Width |
• Low-Band: 19° to 10° • Medium-Band: 13° to 8° |
| Maximum Depth Range |
• Low-Band: Up to 1,828 m (6,000 ft) • Medium-Band: Up to 914 m (3,000 ft) |
| Built-in Sensors | Fast-response Water Temperature, Depth |
| Connector Type | Bare wire / Raymarine 11-Pin or 25-Pin CHIRP Sonar Module Connector (via junction box or adapter) |
| Cable Length | 15 m (50 ft) heavy-duty shielded cable |
| Waterproof Rating | IPX6 / IPX7 |
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