Raymarine B75LH 0DEG Pair Thru Hull Chirp Transducers
Raymarine B75LH 0DEG Pair Thru Hull Chirp Transducers — Product description
Unlock Crystal-Clear Underwater Views with Raymarine B75LH Thru-Hull Chirp Transducers
Imagine gliding through open waters, your sonar screen lighting up with razor-sharp images of fish schools, wrecks, and bottom structure—no matter the depth or conditions. The Raymarine B75LH 0-degree thru-hull transducers deliver exactly that, blending advanced CHIRP technology with rugged bronze construction for serious boaters and anglers who demand precision. Mounted flush through your hull, these transducers provide seamless, real-time depth and temperature readings, turning guesswork into targeted action on every outing.
What sets the B75LH apart? Its dual-frequency CHIRP capability sweeps broad low ranges for deep-water hunting and pinpoints high frequencies for shallow finesse, all without the clutter of traditional fixed-frequency sonar. Ideal for fiberglass or wood hulls with minimal deadrise, the 0-degree design ensures optimal signal transmission straight down, minimizing distortion from hull angles.
Engineered for Peak Performance
- CHIRP Powerhouse: Low band (40-75 kHz) with 32° to 21° beamwidth captures vast underwater landscapes at depths up to thousands of feet. High band (130-210 kHz) narrows to 15° to 9° for hyper-detailed views of baitfish and structure in shallower zones.
- 600W Output: Robust power handles rough seas and heavy weather, maintaining signal integrity where lesser units falter.
- Bronze Housing: Corrosion-resistant and built to withstand constant saltwater exposure, ensuring years of reliable service.
- Integrated Depth and Temperature Sensor: Simultaneous data streams keep you informed on water column changes, perfect for trolling patterns or contour navigation.
- CP450C Connectivity: Plug-and-play with Raymarine fishfinders via included Y-splitter—effortless integration for multi-display setups.
These thru-hull mounts eliminate drag from transom installations, preserving your boat's speed and fuel efficiency while delivering superior bottom tracking at planing speeds.
Real-World Advantages for Boaters and Anglers
In deep offshore pursuits, the wide low-frequency sweep reveals subtle ledges and drop-offs that hold trophy species, while the high-frequency mode excels in inshore bays, separating individual fish from the bait ball chaos. Anglers report fewer false readings around thermoclines thanks to CHIRP's frequency agility, which adapts dynamically to water density shifts.
Why 0-Degree Tilt Matters
For flat or low-deadrise hulls, the straight-down orientation maximizes vertical resolution, avoiding the signal loss common in tilted designs on mismatched boats. This translates to cleaner arches on screen, quicker hooksets, and more fish in the box.
Versatile Applications
- Saltwater trolling for pelagics like tuna or billfish.
- Bottom bouncing over reefs and wrecks.
- Shallow-water flounder gigging or crabbing.
- Navigation in unfamiliar anchorages with precise contour mapping.
Pro Tips for Flawless Installation and Setup
Selecting the right thru-hull location is key—aim for 1/3 aft from the bow, forward of the prop, and away from strakes or thru-hulls that cause turbulence. Fairing blocks aren't typically needed for 0-degree models on deadrise under 10°, but always bed with marine sealant for a watertight seal.
- Drill a 3-inch hole (standard for B75 series) using a hole saw.
- Route cables through bulkheads, securing with zip ties to prevent chafing.
- Connect the Y-splitter to your CP450C-equipped sounder module.
- Calibrate in calm water: Adjust gain and range to match your display's CHIRP settings for optimal sensitivity.
Pro tip: Pair with Raymarine's Axiom or Element series for HyperVision integration, unlocking 3D imaging that rivals down-view tech.
Keep It Performing Like New
Routine care extends lifespan: After every trip, rinse with fresh water to flush salt. Inspect the ceramic face for marine growth—gently clean with a soft brush and non-abrasive cleaner. Winterize by draining and storing dry. Avoid antifouling paints directly on the active face to prevent signal dampening.
Frequently Asked Questions
What hull types are compatible with the Raymarine B75LH 0-degree thru-hull transducer?
Designed specifically for fiberglass or wood hulls with minimal deadrise. The 0-degree tilt ensures perpendicular signal transmission on flatter bottoms.
Does the B75LH transducer support both depth and temperature sensing?
Yes, it provides simultaneous depth and water temperature data, essential for tracking thermal layers and fish behavior.
What frequency ranges does the CHIRP technology cover?
Low CHIRP: 40-75 kHz (32°-21° beamwidth) for deep scanning. High CHIRP: 130-210 kHz (15°-9° beamwidth) for high-resolution shallow details.
Is a Y-splitter cable required for installation?
Yes, the included Y-splitter cable is necessary for CP450C plug connections, allowing dual-channel operation with Raymarine sounders.
Can this transducer be used at high boat speeds?
Thru-hull design minimizes drag and maintains bottom lock-up at planing speeds, outperforming transom mounts in rough conditions.
How does the bronze housing benefit marine use?
Bronze offers excellent corrosion resistance in saltwater, with a hydrodynamic shape that reduces fouling and maintains performance.
What's the power rating and how does it impact performance?
Rated at 600W, it delivers strong signal penetration for reliable readings in varied depths and water clarity.
B75 LH Through Hull Transducer
- Depth / Temp
- Through Hull
- Beam Angle = 0°
- Bronze
- CP450C Plug on Cable - Requires Y-Splitter Cable (Included)
- Power 600W
- Frequency: L=40-75 kHz, H=130-210 kHz
- Low: 32° to 21° beamwidth
- High: 15° to 9° beamwidth
- Hull type: Fiberglass or wood
SKU: NVN-1002934
MPN: T70060
UPC: 723193730249
Technical specifications
| Brand | Raymarine |
| Model | Raymarine B75LH 0DEG Pair Thru Hull Chirp Transducers |
| SKU / MFR# | 1002934 |
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