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The HELIX 8/9/10 CHIRP MEGA SI+ GPS G3N CHO features an 8"/9"/10.1" display to show you all of the technology built inside. Experience the best in sonar with MEGA Imaging+™ and Dual Spectrum CHIRP sonar and Iet GPS, Humminbird Basemap and AutoChart Live show you the way. Built-in Bluetooth® and Ethernet networking capabilities will provide you the ability to connect to and unlock the power of the One-Boat Network™. This CHO (Control Head Only) model allows you to pick the right transducer for your needs, including compatibility with Minn Kota Built-in MEGA Imaging trolling motors.


  • MEGA Side Imaging+: See the world below like never before with crystal-clear viewing out to 200 feet on either side of your boat. You'll unlock more fish and structure with 20% more detail than MEGA Side Imaging Sonar.
  • MEGA Down Imaging+: Get unprecedented underwater clarity with coverage down to 200 feet below your boat. You'll unlock more fish and structure with 20% more detail than MEGA Down Imaging Sonar.
  • Dual Spectrum CHIRP: Before you cast, know what's down there thanks to long, well-defined fish arches, and a clear view of fish-holding structure and the bottom. Powered by our proprietary, Low-Q CHIRP transducer, Dual Spectrum CHIRP offers two ways to search: Wide Mode for maXImum coverage and Narrow Mode for maXImum detail.
  • Humminbird Basemap Built-in: 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 U.S.
  • AutoChart Live: Create real-time maps of your fishing spots, with access to patented Humminbird® LakeMaster® features. See depth contours, even bottom hardness and vegetation layers come to life on screen as you drive your boat.
  • Ethernet Networking: High-speed Ethernet allows you to build a powerful, professional-grade fishing system. Easily network multiple Humminbird fish finders and connect to products from the One-Boat Network™, including Minn Kota i-Pilot Link™ trolling motors and Humminbird CHIRP radar.
  • Bluetooth®: Enable features like wireless software updates and map transfers from the Humminbird FishSmart™ App and also keep your phone out of the water and in your pocket by displaying notifications on your Humminbird. Additionally, you can take control of your most-used features with an optional Bluetooth remote (RC2).
  • LakeMaster® Compatible: Upgrade to the unrivaled accuracy and detail of Humminbird LakeMaster maps. From easy-to-read contours, to highlighted depth ranges and adjustable water levels, you'll have all the tools you need to make every moment count.
  • Navionics® Compatible: Humminbird provides even more map options thanks to additional Navionics compatibility. Available maps regions include detailed cartography for saltwater and fresHWater applications which make Navionics a great option for fishing, cruising or sailing.
  • Includes control head, power cable, gimbal mounting bracket and unit cover.
  • 2-Year Limited Warranty
Series HELIX 
Display Size - Diagonal 8" / 9" / 10.1"
Display Pixel Matrix 1024H x 600V 
Sonar-Standard Dual Spectrum CHIRP, MEGA Down Imaging+, MEGA Side Imaging+ 
Sonar-Optional 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 
Depth-Sonar 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) 
Interface Keypad Control 
Memory Card Slot Dual Micro SD (10.1" Display c/w Dual SD)
Power Draw 1 Amp 
Power Input 10.8-20 VDC 
Power Output Peak-to-Peak 8000 Watts 
Power Output RMS 1000 Watts 
Screen Snap Shot Included 
Sonar Recording Included 
Mount-Standard Gimbal 
Mount-Standard Size 12.00” W x 7.0” H x 4.13” D 
Mount-Optional In-Dash Mounting Kit 
Mount-Optional Size 12.00” W x 6.63” H x 1.32” D 
Transducer Included N/A 
Transducer Mount Location N/A 
GPS Chartplotting Included 
GPS Receiver Internal 
GPS Trackplotting Included 
Waypoints, Routes, Tracks/Points 2,750, 45, 50/20,000 
MEGA 360 Imaging Compatibility Yes 
Humminbird Basemap Included 
LakeMaster Compatibility Yes 
Minn Kota i-Pilot Link Compatibility Yes 
Minn Kota Talon Shallow Water Anchor Compatibility Yes 
Navionics Gold/HotMaps Compatibility Yes 
Navionics Platinum + Compatibility Yes 
Platinum Compatibility Yes 
Radar Compatibility Yes 
5-Port Ethernet Switch Compatibility Yes 
AIS Compatibility Optional 
Heading Sensor GPS Compatibility Yes 
NMEA2000 Optional 
Target Separation 2.5" 
Upgradable Software Yes 
View Preset Keys Yes 
X-Press Menu System Yes 
Custom Digital Readout Yes 
Custom View Selections Yes 
Display Colors Grayscale 16-Bit 
Display Type Color TFT 
Temperature Built In 
Temperature Alarm Yes 
Temperature Graph Yes 
Warranty Two-Year Warranty 
UPC 0082324055225 

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