Garmin GT34UHD-TH Ultra HD Thru-Hull Transducer

Discover Crystal-Clear Underwater Insights with Advanced Scanning Technology

Imagine gliding across the water, effortlessly spotting fish schools, submerged structures, and drop-offs with pinpoint precision. That's the edge this thru-hull transducer brings to serious anglers and boaters. Designed for seamless integration with compatible Garmin systems via the dedicated sonar module, it transforms your chartplotter into a powerful tool for exploration. Unlike traditional sonar that leaves you guessing, its ultra high-definition imaging delivers razor-sharp details, helping you make smarter decisions on the water.

Whether you're chasing trophy bass in shallow bays or hunting wrecks in deeper waters, the downward-facing and side-scanning arrays cut through murky conditions to reveal what's really down there. Anglers report covering more ground faster, reducing time wasted on unproductive spots and boosting catch rates during prime fishing windows.

Superior Imaging: Ultra High-Definition ClearVü Explained

The downward-facing element operates at 800 kHz with a CHIRP range of 760-880 kHz, powering through to 200 feet of depth. This isn't your average sonar beam—its narrow 0.74-degree fore-to-aft by 46-degree port-to-starboard footprint concentrates energy on targets directly below, painting vivid pictures of bottom contours, baitfish balls, and lurking predators.

In real-world scenarios, like navigating rocky shorelines or weed beds, this clarity helps distinguish between a weed clump and a weed-wrapped walleye. Boaters appreciate how it excels in varied conditions, from calm lakes to choppy coastal waters, maintaining image quality that rivals dropping a camera overboard.

Expand Your View: Ultra High-Definition SideVü Capabilities

Extending your sonar's reach sideways, the 1,200 kHz array (CHIRP 1,060-1,170 kHz) scans up to 125 feet on each side—250 feet total coverage. With a tight 0.44-degree by 55-degree beam, it uncovers hidden ledges, schools hugging structure, and even individual fish cruising parallel to your path.

This mode shines for pre-fishing scouting. Picture motoring along a reef line: instead of blind trolling, you map the entire area in one pass, marking hotspots for precise anchoring or casting. Seasoned captains use it to locate bait concentrations that attract big game, turning a good day into an epic one.

Robust Build for Demanding Marine Environments

Engineered as a thru-hull mount, it punches through the hull for optimal signal transmission, minimizing distortion from hull wakes or air bubbles common in transom mounts. Supporting hulls with deadrise angles up to 25 degrees, it fits a wide range of vessels from center consoles to cabin cruisers.

At 500 watts of power, backed by a 12-pin connector and 20-foot cable, reliability is key. It also senses depth and water temperature, feeding essential data to your display for comprehensive situational awareness. The included fairing block ensures a streamlined installation, reducing drag and turbulence for better performance at speed.

Thru-Hull Advantages Over Other Mounts

Why go thru-hull? For starters, it delivers cleaner, more consistent readings unaffected by prop wash or hull slapping. Ideal for offshore runs or high-speed cruising, where transom units might falter. Installation demands a fair bit of hull work, but the payoff is professional-grade sonar that lasts seasons without recalibration.

Pro tip: Pair it with your vessel's existing Garmin ecosystem for plug-and-play simplicity. Saltwater anglers love how it holds up against corrosion, while freshwater enthusiasts value the sensitivity for finesse fishing in stained water.

Practical Tips for Peak Performance

To maximize results, position the transducer forward of any thru-hulls or strakes that could interfere. Keep the face perpendicular to the waterline for undistorted beams. Regular hull cleaning prevents marine growth from dulling signals, and winterizing with fresh water rinses extends longevity.

Fine-tune gain and range settings on your chartplotter to match conditions—lower frequencies punch deeper in rough seas, while high CHIRP sweeps reveal finer details in shallows. Many users experiment with color palettes for better target separation, enhancing the already stunning visuals.

What's Included and Ready for Action

• Main transducer unit with integrated arrays
• Fairing block for optimized hull integration
• Extended 20-foot cable for flexible routing

Everything arrives ready to elevate your on-water game, no guesswork required.

Frequently Asked Questions