Humminbird XNT-9 Transducer MEGA DI CHIRP Transom 20' Cable

Overview

Who This Is For: Anglers running HELIX 7 or 8 units who want the full imaging suite — MEGA Down Imaging for structure detail plus dual-spectrum CHIRP 2D sonar — without buying separate transducers. If you fish structure, suspended fish, and need clarity in deeper water, this one tranducer handles it all.

Product Summary: This is a single transom-mount transducer that stacks three imaging technologies into one cable: MEGA Down Imaging at 455kHz for photographic-quality bottom detail, plus dual-spectrum CHIRP sonar that scales from 150 to 240 kHz depending on your depth and target. Add a built-in temperature sensor and a 20-foot cable, and you've got everything you need to mount it once and get maximum data on the screen. One tranducer, three imaging modes, less clutter on your transom.

Key Features

• MEGA Down Imaging (455 kHz) — produces photographic-quality images of structure, baitfish, and bottom composition directly below your boat down to 350 feet — you'll see the difference between a brush pile, a rocky ledge, and suspended schools at a glance, with clarity no traditional sonar can match.
• Dual Spectrum CHIRP Sonar (150–240 kHz) — gives you full, narrow, and wide frequency options that adapt to depth and water conditions — switch between modes on the fly to hunt deeper fish or dial in suspended targets in open water.
• Maximum Depth Capability — CHIRP sonar reaches 1,200 feet, and MEGA DI penetrates to 125 feet with ultra-high resolution — whether you're in a deep reservoir or a shallow river system, you've got the range and detail.
• Temperature Sensor Built In — real-time water temperature appears on your display without adding hardware — helps you identify thermoclines and seasonal fish movement patterns without guesswork.
• Rugged Composite Design with Impact-Release Bracket — the transducer body handles shallow-water strikes and rough launching without failure, and the release bracket lets you dock without damage — peace of mind on crowded ramps and rocky shorelines.
• 20-Foot Cable — long enough for most transom and motor configurations with room to route cleanly through your boat without strain or kinking.

Specs & What's Included

Compatibility: Works with HELIX 7 CHIRP MEGA DI GPS G3, HELIX 7 CHIRP MEGA DI GPS G3N, HELIX 7 MDI GPS G4N, HELIX 8 CHIRP MEGA DI GPS G3N, and HELIX 8 CHIRP MEGA DI GPS G4N. If your unit is an older HELIX or a different brand, verify compatibility with us before ordering — it matters. Not sure if this works with your setup? Call or text us at (833) 831-4077 — we'll tell you straight.

In the Box: XNT-9-HW-MDI-75-T transom-mount transducer with built-in temperature sensor, impact-release mounting bracket, and 20-foot transducer cable. Your HELIX unit is sold separately.