Unrivaled Underwater Visibility with MEGA Imaging

Imagine gliding across the water and spotting hidden fish-holding structures, submerged timber, or drop-offs with stunning precision—up to 125 feet to each side and below your boat. The HELIX 7 CHIRP MEGA SI GPS G4N delivers this through MEGA Side Imaging and MEGA Down Imaging, offering three times the detail of standard options. In real-world scenarios, like scanning murky lake bottoms or river channels, these tools reveal nuances that traditional sonar misses, helping you pinpoint baitfish schools or trophy bass lurking near cover.

Anglers often rave about how this level of clarity turns frustrating slow days into limits. Whether you're targeting walleye in deep weedlines or crappie suspended over humps, the photo-like images make it easier to interpret bottom composition and structure without guesswork.

Dual Spectrum CHIRP Sonar for Versatile Fish Finding

Before dropping a line, get a comprehensive picture of what's below with Dual Spectrum CHIRP. Switch seamlessly between Wide Mode for broad-area searches—ideal for covering vast flats—and Narrow Mode to zoom in on precise targets, displaying crisp fish arches and bottom details. Supporting frequencies from 50 kHz up to 1.2 MHz, it handles depths from shallow bays to over 1,200 feet with the standard transducer, or even 3,500 feet with optional upgrades.

This sonar shines in diverse conditions: choppy waves won't wash out returns, and its Low-Q CHIRP processing minimizes clutter for cleaner reads. Pair it with your favorite soft plastics or jigs, and you'll consistently locate fish in structure-heavy environments like rock piles or brush.

Precision Navigation with Built-in GPS and Custom Mapping

Built-in GPS and Humminbird Basemap cover over 10,000 inland lakes plus coastal U.S. charts, highlighting contours, hazards, marinas, and depth markers for confident navigation. But the real game-changer is AutoChart Live—drive your boat to generate real-time maps of depth, hardness, and vegetation, with eight hours of onboard recording expandable via SD cards.

Compatible with premium charts like LakeMaster or Navionics, you can overlay high-definition contours on familiar waters. Track your drifts, mark waypoints for hot spots, and even log GPS speed and water temp graphs to correlate with bite patterns, giving you an edge on repeat trips.

Seamless Integration for a Complete Fishing System

Build a networked setup with Ethernet for multiple units, CHIRP radar, or Minn Kota i-Pilot Link trolling motors. Bluetooth connects to Talon or Raptor anchors for hands-free control, while NMEA 2000 pulls in engine data, weather, or water conditions. Wi-Fi enables software updates and smartphone notifications right on the 7-inch HD display.

One-Boat Network compatibility unlocks Minn Kota's precision control, like spot-lock on structure you've just imaged. It's perfect for multi-species boats or tournament rigs where every piece of intel counts.

Intuitive Controls on a Crisp 7-Inch Display

The 1024 x 600 pixel sunlight-viewable screen supports split-screen views, letting you monitor Side Imaging alongside CHIRP and GPS simultaneously. Keypad controls with softkeys and X-Press menus make adjustments glove-friendly, even in rough water. Features like screen snapshots, sonar recording, and customizable readouts keep you focused on fishing.

Power-efficient at 800 mA draw, it mounts via gimbal (included) with a compact footprint, suiting kayaks to center consoles. Upgradable software ensures it evolves with your needs.

Key Specifications at a Glance

Pro Tips for Maximizing Your HELIX 7 G4N

• Adjust sensitivity in stages during setup to match water clarity—start mid-range for MEGA Imaging to avoid noise.
• Use AutoChart Live on familiar lakes to refine contours for jigging specific depths.
• Pair with a heading sensor for accurate waypoint navigation in currents.
• Clean the transducer face regularly for consistent high-detail returns.
• Experiment with split-screen combos: MEGA SI + CHIRP for structure scouting, GPS + Down Imaging for precise anchoring.

Contents include the control head, XNT 9 HW MSI 150 T transom-mount transducer, power cable, gimbal bracket, and hardware—ready to install and fish.