Northland Marine

Humminbird Helix 9 Chirp MSI+ GPS G4N 411380-1

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Helix 9 Chirp MEGA SI+ GPS G4N

Due to COVID-19 Humminbird graphs are extremely hard to supply.  We are receiving product in daily, but in small numbers.  If you would like to be added to a backorder list and contacted when a certain model becomes available, please call us, 715.546.2333, or email us, with the model you are looking for.

Part Number:  411380-1

The HELIX 9 CHIRP MEGA SI+ GPS G3N features a commanding 9" display, MEGA Side Imaging+, MEGA Down Imaging+ and Dual Spectrum CHIRP Sonar. Includes GPS mapping, built-in Bluetooth, Ethernet networking capabilities and ability to create your own maps in real-time with AutoChart Live's depth, vegetation and bottom hardness mapping. Humminbird Basemap cartography is built-in, with the option to expand your mapping capabilities with available LakeMaster charts. Model is compatible with Minn Kota Built-in MEGA SI trolling motors.


  • 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 conditions.
  • 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, transom mount transducer and mounting hardware, power cable, gimbal mounting bracket.
  • 2-Year Limited Warranty

Display Size - Diagonal




Display Pixel Matrix

1024H x 600V




Dual Spectrum CHIRP

MEGA Down Imaging+

MEGA Side Imaging+


50 kHz

50/Low Airmar CHIRP


CHIRP - Frequencies Supported

Full Mode (150-220 kHz)

Narrow Mode (180-240 kHz)

Wide Mode (140-200 kHz)

Sonar-Frequencies Supported

50/83/200/455/800 kHz & 1.2 MHz




1,200 ft (standard transducer)

3,500 ft (optional 50 kHz)


CHIRP - Imaging-Frequencies Supported

455 kHz DI+ (435-535 kHz)

455 kHz SI+ (405-505 kHz)

800 kHz DI+ (800-860 kHz)


800 kHz SI+ (780-840 kHz)

MEGA DI+ (1100-1200 kHz)

MEGA SI+ (1050-1175 kHz)

Depth-Down Imaging

125 ft (800 kHz)

200 ft (MEGA)

400 ft (455 kHz)

Range-Side Imaging (Side-To-Side)

800 ft (455 kHz)

250 ft (800 kHz)

400 ft (MEGA)


Keypad Control



Memory Card Slot

Dual Micro SD



Power Draw

1 Amps



Power Input

10.8-20 VDC



Power Output Peak-to-Peak

8000 Watts



Power Output RMS

1000 Watts



Screen Snap Shot




Sonar Recording








Mount-Standard Size

12" W x 7" H x 4.13" D




In-Dash Mounting Kit



Mount-Optional Size

12" W x 6.63" H x 1.32" D



Transducer Included




Transducer Mount Location




GPS Chartplotting




GPS Receiver




GPS Trackplotting




Waypoints,  Routes, Tracks/Points

2,500, 47, 50/20,000



360 Imaging Compatibility




Humminbird Basemap




LakeMaster Compatibility




Minn Kota i-Pilot Link Compatibility




Minn Kota Talon Shallow Water Anchor Compatibility




Navionics Gold/HotMaps Compatibility




Navionics Platinum + Compatibility




Platinum Compatibility




Radar Compatibility




5-Port Ethernet Switch Compatibility




AIS Compatibility




Heading Sensor GPS Compatibility








Target Separation




Upgradable Software




View Preset Keys




X-Press Menu System




Custom Digital Readout




Custom View Selections




Display Colors Grayscale




Display Type

Color TFT




Built In



Temperature Alarm




Temperature Graph




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