Furuno R109LH Urethane Chirp Thru-Hull w/Temp & High Speed Fairing Block - No Connector
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Furuno R109LH Urethane Chirp Thru-Hull w/Temp & High Speed Fairing Block - No Connector Product Description
Unlock Deeper Insights on the Water with Advanced CHIRP Technology
Imagine scanning the ocean floor at depths that reveal hidden structures and schools of fish others miss. The Furuno R109LH steps up as a powerhouse thru-hull transducer, blending urethane durability with CHIRP versatility. This isn't just about sending sound waves—it's about tuning into the perfect frequency for your hunt, whether you're chasing trophy tuna in blue water or picking apart reef edges for snapper.
Crafted for vessels 40 feet and larger, its high-speed fairing block slices through displacement hulls, ensuring crystal-clear sonar returns even at planing speeds. With temperature sensing built-in, you'll track water columns where bait balls thrive, giving you the edge in competitive fishing scenarios.
Why This Transducer Stands Out for Serious Anglers
Going beyond basic sonar, the R109LH leverages Furuno's Free Synthesizer tech. Select any two frequencies across wide bands—38-75 kHz low and 130-210 kHz high—to match conditions precisely. Narrow beams at higher frequencies deliver pinpoint detail on wrecks; wider low-freq spreads paint broad underwater landscapes.
- Powerhouse Output: 3kW low, 2kW high for penetrating deep water without losing resolution.
- Adaptive Beam Angles: Low freq: 19° to 10° port-starboard (10° to 5° fore-aft); High: 8° to 4° for surgical precision.
- Rugged Build: Urethane housing thrives in fiberglass, wood, or metal hulls, paired with a fairing block for speed stability.
- Temp Sensor: Monitors surface water to correlate with fish behavior patterns.
Anglers report transforming vague sonar blips into actionable intel. One offshore captain noted how dialing to 42 kHz exposed a bait pod drawing marlin from 800 feet down—details that fixed-frequency units blur.
Perfect for Deep-Sea Pursuits and Bottom Bouncing
On big-game trips, the low-frequency range sweeps vast areas, spotting baitfish trails that lure pelagics. Switch to high CHIRP for inshore wrecks, where tight beams separate fish from structure. Fiberglass sportfishers love its thru-hull mount—no drag, full-speed performance.
Pro Tips from Seasoned Skippers
- Pair with multifunction displays supporting FFS for on-the-fly frequency tweaks.
- Mount forward of props for clean water flow; fairing aligns it dead astern.
- Calibrate gain post-install to filter noise, maximizing target separation.
This setup shines on tournaments where every mark counts, turning your boat into a fish-finding machine.
Seamless Integration for Your Rig
Engineered for deadrise angles up to 25°, the included fairing block ensures optimal beam projection. No connector means custom wiring flexibility—match to your network without adapters. Ideal for upgrades on center consoles or convertibles pushing 30+ knots.
"Switched from a single-freq unit—night and day. Now I see fish arches in 1,000 feet that were ghosts before." – Gulf Stream Veteran
Frequently Asked Questions
What frequencies can the Furuno R109LH transducer operate on?
It covers 38 kHz to 75 kHz low and 130 kHz to 210 kHz high, allowing selection of any two via Free Synthesizer tech for optimal beam and depth.
Is the R109LH suitable for high-speed boating?
Yes, the high-speed fairing block stabilizes performance on planing hulls over 40 feet, maintaining clear sonar at speed.
Does this transducer include a temperature sensor?
Absolutely—it has an integrated temp sensor to monitor water conditions alongside sonar data.
What hull materials work with the R109LH?
Designed for fiberglass, wood, or metal hulls with up to 25° deadrise.
How does CHIRP benefit fishing with this model?
CHIRP provides superior target separation and detail versus fixed frequencies, revealing fish close to bottom or in heavy cover.
What's the power rating of the R109LH?
3kW RMS low frequency and 2kW high frequency for deep penetration and high-resolution imaging.
Why no connector on this version?
It ships without a connector for custom integration with your existing Furuno or compatible systems.
R109LH Urethane Chirp Thru-Hull with Temp & High Speed Fairing Block - No Connector
Transducer Features:
Airmar R109 Housing Style Transducer
The Broadband R109 operates at any frequency between 38 kHz to 75kHz and 130 kHz to 210 kHz. Adjusting the frequency allows you to change the R109's beamwidth and depth capabilities. For example if you are bottom fishing in 61 m (200') of water, the narrow high-frequency beam will display extreme bottom detail and fish holding tight to structure. If you are tuna or marlin fishing in deep blue water, the wider, low-frequency beam will not only give deep-water bottom detail, but more importantly show you more of what is around your vessel, including bait which may attract game fish.
Because the R109 has a bandwidth that covers a continuous frequency spectrum, next generation Fish Finders utilizing Furuno Free Synthesizer (FFS) technology can be made “tunable”, so fishermen can “dial-in” the best frequency for the target fish species or conditions.
Standard Features:
- Thru-Hull Transducer with High Performance Fairing Block Kit
- 3kW Low Frequency, 2kW High Frequency
- Furuno Free Synthesizer (FFS) compatible - select any two frequencies from 38 kHz to 75kHz and 130 kHz to 210 kHz
- Beam angle dependent upon frequency:
- Low = 19 degrees to 10 degrees port-starboard (10 degrees to 5 degrees fore-aft)
- High = 8 degrees to 4 degrees
- No Connector
- Designed for 40ft and above boats made of fiberglass, wood or metal
1M Airmar 9-pin mixed-match chirp cable for Navico. Features: Length: 1M9-pin
SKU: NVN-73106
MPN: R109LH
UPC: 611679369598
Furuno R109LH Urethane Chirp Thru-Hull w/Temp & High Speed Fairing Block - No Connector Related Products
Frequently Asked Questions (FAQ) About Furuno R109LH Urethane Chirp Thru-Hull w/Temp & High Speed Fairing Block - No Connector
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How to describe Furuno R109LH Urethane Chirp Thru-Hull w/Temp & High Speed Fairing Block - No Connector?
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Furuno R109LH Urethane Chirp Thru-Hull w/Temp & High Speed Fairing Block - No Connector Technical Specifications
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Furuno R109LH Urethane Chirp Thru-Hull w/Temp & High Speed Fairing Block - No Connector User Reviews
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