The HELIX 9 CHIRP MEGA SI GPS G4N features a large 9" display with LED backlight, CHIRP-ing MEGA Side Imaging, MEGA Down Imaging and 2D  sonar. Includes GPS chartplotting, built-in Bluetooth, Ethernet networking capabilities, AutoChart Live with depth, vegetation and bottom hardness mapping, and unit cover.

455kHz Side Imaging provides 800 ft of side to side coverage.
455kHz Down Imaging works to a depth of 400 feet. 
1.2 MHz Side Imaging provides 250 feet of side to side coverage. 
1.2 MHz Down Imaging works to a depth of 125 feet

*Optional 50 kHz transducers available for extreme deepwater.

SPECS  |  SUPPORT
Display Size - Diagonal:9"
Display Pixel Matrix:800H X 480V
Display Type:Color TFT
Display Colors Grayscale:16-bit
Sonar Standard:MEGA Side Imaging/MEGA Down Imaging, CHIRP Digital Sonar/DualBeam PLUS
Standard Sonar Coverage:20°, 60° & (2) 86° & (2) 55° @ -10db (Total of 180°)
Standard Sonar Frequency:83/200/455/800 kHz & 1.2 MHz
Sonar Optional:50kHz, 50/Low Airmar CHIRP
Target Separation:2.5"
Power Output RMS:1000 Watts*
Power Output Peak to Peak:8000 Watts*
Depth Capability:125 ft(DI) 400 ft(DI-455kHz)1500 ft, 3500 ft*
Temperature:Built-In Transducer
Speed:GPS Speed Included
Backlight:LED
Unit Size - Gimbal Mount:13.44"W x 7.12"H x 4.20"D
Mount A Type:Gimbal Mount
Unit Size - Indash Mount:13.44"W x 7.12"H x 3.99"D
Mounting Options:Optional In-Dash Mounting Kit
Transducer Standard:XM 9 20 MSI T
Transducer Mounting:Transom
Power Input:10.8-20 VDC
Power Draw:2.5 Amps
GPS Receiver:Included
GPS Tracking:Included
GPS Chartplotting:Included
Waypoints, Routes, Tracks/Points:2,750, 47, 50/20,000
Humminbird Mapping:Optional
Navionics+:Optional
Navionics Platinum+:Optional
Platinum Capable:Optional
C-Map 4D:Not Supported
360 Imaging:Optional
i-Pilot Link:Optional
HD Radar:Optional
NMEA 2000:Optional
5 Port Expansion Module:Optional
Precision GPS:Included
Heading Sensor GPS:Optional
PC Connect:Optional
External GPS Receiver:Optional
AIS Compatability:Optional
SwitchFire Sonar:Included
Screen Snap Shot:Included
Sonar Recording:Included
Humminbird PC:Included
Upgradable Internal Software:Included
Split Screen Zoom:Included
Split Screen Bottom Lock:Included
3D Chart View:Included
Large Digits View:Included
Wide/Narrow Cone Split Screen:Included
Custom Digital Readout:Included
View Preset Keys:Included
Temperature Graph:Included
Temperature Alarm:Included
Freeze Frame:Included
Instant Image Update:Included
Mark Structure on Sonar:Included
Selective Fish ID+:Included
Real Time Sonar:Included
Triplog:Included
X-Press Menu System:Included
Card Reader Available:Yes
# Card Slots:2