Humminbird HELIX 12 GPS CHIRP MEGA SI+ G4N CHO – Professional Grade Marine Fishfinder & Chartplotter
Elevate your fishing success with the ultimate professional-grade marine electronics system. The Humminbird HELIX 12 GPS CHIRP MEGA SI+ G4N CHO delivers unmatched underwater clarity and comprehensive navigation capabilities through its massive 12.1″ display and advanced MEGA imaging technologies. This Control Head Only model provides maximum flexibility for custom transducer configurations and seamless integration with Minn Kota trolling motors.
Revolutionary MEGA Imaging Technology
Experience the future of fish finding with cutting-edge sonar technology that transforms how you see underwater structures and fish.
MEGA Side Imaging+ – Enhanced Range & Detail
200-foot side coverage on both sides of your boat for comprehensive water column scanning
20% more detail than standard MEGA Side Imaging for crystal-clear structure identification
60% greater range capability extends your fish-finding reach beyond traditional boundaries
1050-1175 kHz frequency range delivers photographic-quality underwater imagery
MEGA Down Imaging+ – Unprecedented Depth Clarity
200-foot down imaging depth with enhanced penetration and clarity
Superior bottom composition analysis reveals structure, vegetation, and fish-holding areas
1100-1200 kHz MEGA frequencies provide exceptional target separation and definition
Advanced signal processing eliminates noise while preserving critical fish-finding detail
Dual Spectrum CHIRP Sonar – Precision Fish Detection
Wide Mode (140-200 kHz): Maximum coverage for rapid water scanning and fish location
Narrow Mode (180-240 kHz): Pinpoint accuracy for detailed structure analysis
Full Mode (150-220 kHz): Balanced performance for comprehensive fish finding
2.5-inch target separation distinguishes individual fish in dense schools
Professional Display & User Interface
12.1″ Color TFT Display: Massive viewing area with 1280H x 800V resolution for detailed chart and sonar analysis
16-bit grayscale processing ensures smooth gradients and superior image quality
Keypad control interface provides reliable operation in all weather conditions
X-Press Menu System delivers intuitive navigation and quick access to critical functions
Custom view selections and preset keys optimize display for specific fishing techniques
Advanced GPS Navigation & Mapping
Internal GPS receiver with precise positioning and track recording
Humminbird Basemap included – detailed coverage of 10,000+ lakes plus continental US coastal areas
2,750 waypoints, 47 routes, 50 tracks with 20,000 track points for comprehensive navigation planning
Premium chart compatibility: LakeMaster, CoastMaster, Navionics Gold/HotMaps/Platinum series
Dual SD card slots support extensive chart libraries and data storage
AutoChart Live Real-Time Mapping
8 hours built-in recording time for instant custom map creation
Depth contour mapping reveals underwater topography as you boat
Built-in MEGA Imaging compatibility with Minn Kota trolling motors
Professional Networking Capabilities
Ethernet networking: High-speed data sharing between multiple units
NMEA 2000 built-in: Engine data, weather, and vessel performance monitoring
Bluetooth connectivity: Wireless software updates and smartphone notifications
5-port Ethernet switch compatibility for complex multi-unit installations
Radar compatibility for comprehensive navigation and collision avoidance
Control Head Only Advantage
Maximum Installation Flexibility: This CHO model allows you to select the optimal transducer configuration for your specific fishing applications and boat setup.
Compatible with Minn Kota built-in MEGA Imaging trolling motors
MEGA 360 Imaging transducer ready for complete underwater visualization
Multiple transducer mounting options including through-hull, transom, and in-hull installations
Professional installation flexibility for custom marine electronics systems
Technical Specifications
Power & Performance
Power Output: 8000W Peak-to-Peak, 1000W RMS
Power Input: 10.8-20 VDC, 3.2 Amp draw
Maximum Depth: 3,500 ft (optional 50 kHz), 1,200 ft (standard)
Temperature monitoring: Built-in sensor with alarms and graphing
