Humminbird Helix 8 Chirp MEGA DI GPS G4N Fish Finder product image
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Humminbird Helix 8 Chirp MEGA DI GPS G4N Fish Finder product image
Humminbird Helix 8 Chirp MEGA DI GPS G4N Fish Finder product image

Humminbird Helix 8 Chirp MEGA DI GPS G4N Fish Finder


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  • MEGA Down Imaging +
  • AutoChart Live
  • i-Pilot Link for fish finder and trolling motor communication
Delivery & Pickup Options

Store Pickup - FREE

Product Information


  • Access the preloaded views from the user-friendly menu system, operated by soft key controls
  • MEGA Down Imaging+ gives underwater clarity coverage down to 200 feet below your boat
  • Dual Spectrum CHIRP sonar offers two ways to search; Wide Mode for maximum coverage and Narrow Mode for focusing on the slightest detail


  • Internal GPS and Humminbird Basemap provides you with a clear view of underwater terrain and surrounding points of interest so you can fish and navigate with total confidence by identifying buoys, day markers, hazards, marinas, contours, depth markers and more
  • Premium Chart Compatible provides the most complete offering of premium chart options to anglers everywhere
  • AutoChart Live allows you to create real-time maps of your fishing spots, with access to patented Humminbird® LakeMaster® features; You can map depth contours, bottom hardness and vegetation
  • AutoChart Live comes standard with eight hours of built-in recording time and is compatible with AutoChart Zero Line SD cards
  • CoastMaster maps deliver unrivaled nearshore and offshore fishing performance
  • Set your heading or turn pattern and maintain your desired route, regardless of speed or sea and wind conditions with Humminbird autopilot
  • SmartStrike cards combine High Definition LakeMaster lake map data and extensive search algorithms to help you pattern and locate fish
  • i-Pilot Link enables your Humminbird fish finder and Minn Kota trolling motor to communicate, delivering precise, automatic boat control
  • AIS technology to track other vessels


  • Wi-Fi compatible
  • One-Boat Network seamlessly integrates and communicates with Minn Kota and Cannon products to unlock more features and capabilities for anglers everywhere
  • Easily connect multiple fish finders, or upgrade to add-on technologies like Minn Kota i-Pilot Link and Humminbird CHIRP Radar with ethernet connecting
  • Bluetooth compatible allows for communication to Talon and Raptor shallow water anchors, as well as Cannon Optimum downriggers
  • Easily connect bearing, depth, engine status, tank level, and electrical sensors with NMEA 2000


  • Includes control head, transom mount transducer and mounting hardware, power cable, gimbal mounting bracket
  • Dual Micro SD Slots
  • Brand : Humminbird
  • Country of Origin : United States of America
  • DSG Pro Tips
  • SKU: 21750639


Display Size - Diagonal8"
Display Pixel Matrix1024H x 600V
Sonar-StandardDual Spectrum CHIRP, MEGA Down Imaging
Sonar-Coverage25°, 42°, 45°, 75° @ -10dB
Sonar-Optional50 kHz, 50/Low Airmar CHIRP
CHIRP - Frequencies SupportedFull Mode (150-220 kHz), Narrow Mode (180-240 kHz), Wide Mode (140-200 kHz)
Sonar-Frequencies Supported50/83/200/455/800 kHz & 1.2 MHz
Depth-Sonar1,200 ft (standard transducer), 3,500 ft (optional 50 kHz)
CHIRP - Imaging-Frequencies SupportedMEGA DI (1075-1150 kHz), 455 kHz (440-500 kHz)
Depth-Down Imaging125 ft (MEGA), 350 ft (455 kHz)
Power Draw2.4 Amps
Power Input10.8-20 VDC
Power Output Peak-to-Peak8000 Watts
Power Output RMS1000 Watts
Mount-Standard Size12.00 x 7.0 x 4.13 in.

Customer Reviews