Humminbird HELIX 12® CHIRP MEGA SI+ GPS G4N CHO Display Only
Humminbird HELIX 12® CHIRP MEGA SI+ GPS G4N CHO Display Only — Product description
Upgrade your boating setup with the versatile control head from the Humminbird HELIX series, designed for anglers who demand precision and flexibility on the water. This 12.1-inch powerhouse delivers stunning clarity through advanced MEGA Imaging technologies, letting you spot fish and structure from afar without compromising on detail. Perfect for those building a custom sonar system, it pairs seamlessly with your choice of transducers, including innovative options from Minn Kota trolling motors or standalone MEGA 360 units.
Imagine gliding across a lake, watching crystal-clear images unfold on a massive, sunlight-readable display. Whether you're chasing walleye in shallow bays or scanning deep drop-offs for bass, this unit's enhanced sonar capabilities transform guesswork into targeted casts. Its intuitive keypad controls keep you focused on fishing, even in rough conditions, while robust networking opens doors to a fully integrated boat ecosystem.
Superior Imaging That Reveals Every Detail
At the heart of this control head lies MEGA Side Imaging+, pushing boundaries with views up to 200 feet on each side of your boat. Anglers report uncovering hidden weedlines and submerged timber that standard sonar misses, thanks to 20% sharper detail and 60% extended range over previous generations. Complementing it is MEGA Down Imaging+, offering the same leap in performance straight down to 200 feet—ideal for pinpointing schools suspended over structure.
Dual Spectrum CHIRP sonar adds versatility, switching effortlessly between wide coverage for broad searches and narrow beams for dissecting tight spots. Powered by a low-Q transducer design, it paints vivid fish arches and bottom compositions, helping you dial in lure presentations with confidence.
Navigation and Mapping Made Effortless
Built-in GPS and Humminbird Basemap cover over 10,000 inland lakes plus coastal charts for the continental U.S., highlighting contours, hazards, marinas, and more. No more fumbling with paper maps—overlay depth markers and points of interest for safer, smarter trips.
Take mapping further with AutoChart Live, which generates custom contours, hardness maps, and vegetation layers in real-time as you motor along. Eight hours of onboard storage gets you started, and expandable SD cards mean endless possibilities for revisiting hot spots season after season. Pair it with premium charts like LakeMaster or Navionics for even richer detail.
Seamless Connectivity for the Modern Angler
This unit shines in networked setups. Ethernet supports high-speed connections for multi-unit systems, sharing data across heads or adding radar and i-Pilot Link trolling motors. Bluetooth links to shallow water anchors and downriggers for touchscreen control, plus app-based updates and notifications. NMEA 2000 integration pulls in engine data, weather, and more, while Wi-Fi enables wireless syncing.
One-Boat Network compatibility unites Humminbird, Minn Kota, and Cannon gear, automating spot-lock, route following, and bait deployment. Tournament pros love how it streamlines operations, freeing them to fish harder.
Why Choose the Control Head Only Model?
Flexibility defines this CHO configuration—no bundled transducer means you select exactly what fits your boat and fishing style. Hook up to Minn Kota's Built-in MEGA Imaging for a clean install, add MEGA 360 for 360-degree sweeps, or tap into existing Ethernet sonar shares. It's a smart pick for upgraders or multi-boat owners avoiding redundancy.
Ready for Real-World Demands
Rugged gimbal mounting and included power cable ensure quick setup. Keypad operation proves reliable in gloves or wet hands, outperforming touchscreens in choppy water. Serious anglers appreciate the 1kW power handling for deep-water prowess and optional expansions like AIS or radar.
Standout Specs at a Glance
- 12.1" high-resolution display for edge-to-edge views
- Keypad controls for all-weather reliability
- Internal GPS with extensive basemap coverage
- AutoChart Live for custom cartography
- Full networking: Ethernet, Bluetooth, Wi-Fi, NMEA 2000
- Compatible with premium charting and One-Boat Network
- Includes gimbal bracket and power cable
Frequently Asked Questions
What makes MEGA Side Imaging+ better than standard MEGA Side Imaging?
MEGA Side Imaging+ delivers 20% more detail and 60% greater range, extending coverage up to 200 feet per side for revealing finer structure and fish-holding spots.
Does this model include a transducer?
No, this is a Control Head Only (CHO) model, allowing you to choose transducers like those built into Minn Kota motors or MEGA 360 for a tailored setup.
How does AutoChart Live work?
It maps depth, bottom hardness, and vegetation in real-time with 8 hours of built-in storage, expandable via SD cards, integrating LakeMaster features for custom charts.
What networking options are available?
Ethernet for multi-unit sharing, Bluetooth for anchors and updates, Wi-Fi for apps, and NMEA 2000 for engine/weather data, plus One-Boat Network integration.
Is it compatible with premium charts?
Yes, supports LakeMaster, CoastMaster, and Navionics charts for enhanced contour and high-definition mapping options.
Can I use it with Minn Kota trolling motors?
Absolutely, it connects directly to Built-in MEGA Imaging on Minn Kota motors, enabling spot-on imaging without extra transducers.
What's the benefit of Dual Spectrum CHIRP?
Offers wide mode for broad coverage and narrow mode for precise detail, showing clear fish arches and structure with a proprietary low-Q transducer.
Equip your vessel with technology that evolves with your passion for fishing. This control head isn't just gear—it's your edge on the water.
HELIX 12® CHIRP MEGA SI+ GPS G4N CHO Display Only
The HELIX 12 CHIRP MSI+ GPS G4N CHO features a 12.1" display, MEGA Side Imaging+, MEGA Down Imaging+, Dual Spectrum CHIRP Sonar and internal GPS with Humminbird Basemap. As with all HELIX G4N models, this HELIX 12 includes standard features such as AutoChart Live, Wi-Fi and NMEA 2000®, in addition to Bluetooth® and Ethernet networking for compatibility with the One-Boat Network™ family of products from Humminbird, Minn Kota and Cannon. This CHO (Control Head Only) model allows you to pick the right accessory transducer for your needs, including compatibility with Minn Kota Built-in MEGA Imaging trolling motors.
Features:
- Control Head Only Model: This model does not include a transducer. This CHO model is a great choice for those looking to connect to connect to Built-in MEGA Imaging on Minn Kota trolling motors, accessory transducer options like MEGA 360 Imaging, or share sonar data from an existing Humminbird Ethernet network.
- Keypad control: Master HELIX at the touch of a button. Access the preloaded views from the user-friendly menu system, operated by soft key controls that allow you to reliably operate your fish finder in any condition.
- MEGA Side Imaging+: See the world below like never before with a crystal-clear Side Imaging viewing out to 200 feet on either side of your boat. You'll unlock more fish and structure with 20% more detail and 60% more range capability than MEGA Side Imaging sonar.
- MEGA Down Imaging+: Get unprecedented underwater clarity with Down Imaging coverage down to 200 feet below your boat. You'll unlock more fish and structure with 20% more detail and 60% more depth capability than MEGA Down Imaging sonar.
- Dual Spectrum CHIRP sonar: Before you cast, know what's down there thanks to highly-detailed fish arches and a clear view of fish-holding structure and the bottom. Powered by our proprietary, Low-Q CHIRP transducer, Dual Spectrum offers two ways to search; Wide Mode for maximum coverage and Narrow Mode for focusing on the slightest detail.
- Internal GPS and Humminbird Basemap: Our enhanced basemap provides you with a clear view of underwater terrain and surrounding points of interest so you can fish and navigate with total confidence. Identify buoys, day markers, hazards, marinas, contours, depth markers and much, much more. Includes charts of more than 10,000 lakes, plus coastal coverage for the continental U.S.
- Premium Chart Compatible: Humminbird provides the most complete offering of premium chart options to anglers everywhere. Get a complete view of the world below with optional charts from Humminbird's LakeMaster® and CoastMaster™ products, as well as your choice of compatible Navionics® charts.
- AutoChart Live: Create real-time maps of your fishing spots, with access to patented Humminbird® LakeMaster® features. Map depth contours, bottom hardness and vegetation as you drive your boat. Comes standard with eight (8) hours of built-in recording time and is compatible with AutoChart Zero Line SD cards for virtually-endless AutoChart Live mapping capacity.
- One-Boat Network Compatible: Many Humminbird models seamlessly integrate and communicate with Minn Kota and Cannon products to unlock more features and capabilities for anglers everywhere. Make the more of your time on the water with the exclusive boat control and fish-catching features of the One-Boat Network.
- Ethernet Networking: High-speed Ethernet allows you to build a powerful, professional-grade fishing system. Easily connect multiple fish finders, or upgrade to add-on technologies like Minn Kota i-Pilot Link and Humminbird CHIRP Radar.
- Bluetooth: Take control right from the screen of your Humminbird with wireless communication to compatible Talon and Raptor shallow water anchors, as well as Cannon Optimum downriggers. Additional features include wireless software updates from the Humminbird FishSmart App and display of smart phone notifications on your Humminbird.
- NMEA 2000 networking built-in: Connect an accessory NMEA 2000 network to your control head for even more information; from boat performance to weather and water conditions, make sense of it all with NMEA 2000 networking.
- Includes control head, power cable, gimbal mounting bracket. This CHO model does not include a transducer, allowing you to pick the best fit for your rigging needs.
- 2-Year Limited Warranty
HELIX 12 CHIRP MEGA SI + GPS G4N CHO fish finder has a 12.1-inch display, MEGA side imaging+, MEGA downward imaging+, dual-spectrum CHIRP sonar and built-in GPS with Humminbird Base map. Like all HELIX G4N models, this HELIX 12 includes standard features such as Auto Chart Live, Wi-Fi and NMEA 2000 in addition to Bluetooth and Ethernet networks, and can be used with Humminbird, Minn Kota and Cannon​​​​ This CHO (control head only) model allows you to select the appropriate accessory sensor according to your needs, including compatibility with Minn Kota's built-in MEGA Imaging traction motor.
SKU: NVN-85758
MPN: 411450-1CHO
UPC: 082324055775
Technical specifications
| Brand | Humminbird |
| Model | Humminbird HELIX 12® CHIRP MEGA SI+ GPS G4N CHO Display Only |
| SKU / MFR# | 85758 |
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