Comparison Table
Humminbird Helix 7 Chirp MDI GPS G4N  | Humminbird Helix 7 Chirp MSI GPS G4N  | |
| Display Size | 7″ | 7″ |
| Display Resolution | 1024H x 600V | 1024H x 600V |
| Standard Sonars | Dual Spectrum CHIRP, MEGA Down Imaging | Dual Spectrum CHIRP, MEGA Down Imaging, MEGA Side Imaging |
| Coverage | 20°, 42°, 60° & (2) 86° @ -10dB | 20°, 42°, 60° & (2) 86° @ -10dB |
| CHIRP Frequencies | 83/200 (75-155/130-250 kHz), Full Mode (150-220 kHz), Narrow Mode (180-240 kHz), Wide Mode (140-200 kHz) | 83/200 (75-155/130-250 kHz), Full Mode (150-220 kHz), Narrow Mode (180-240 kHz), Wide Mode (140-200 kHz) |
| Sonar Frequencies | 50/83/200/455/800 kHz & 1.2 MHz | 50/83/200/455/800 kHz & 1.2 MHz |
| Sonar Depth | 1,200 ft (standard transducer), 3,500 ft (optional 50 kHz) | 1,200 ft (standard transducer), 3,500 ft (optional 50 kHz) |
| CHIRP Imaging Frequencies | 455 kHz (440-500 kHz), MEGA DI (1075-1150 kHz) | 455 kHz (440-500 kHz), MEGA DI (1075-1150 kHz), MEGA SI (1075-1150 kHz) |
| Down Imaging Depth | 400 ft (455 kHz), 75 ft (MEGA) | 400 ft (455 kHz), 75 ft (MEGA) |
| Side Imaging Range | – | 800 ft (455 kHz), 250 ft (MEGA) |
| Memory Card | Dual Micro SD | Dual Micro SD |
| Compatibility | AIS, AutoPilot, Minn Kota US2 Sonar, Minn Kota Built-In MEGA DI, MEGA Live, One-Boat Network, Minn Kota i-Pilot Link, Minn Kota Talon/Raptor, NMEA 2000, Radar | AIS, AutoPilot, Minn Kota US2 Sonar, Minn Kota Built-In MEGA DI, MEGA Live, One-Boat Network, Minn Kota i-Pilot Link, Minn Kota Talon/Raptor, NMEA 2000, Radar |
| Power Input | 10.8-20 VDC | 10.8-20 VDC |
| Power Output Max | 4000 Watts | 4000 Watts |
| Power Output Cont. | 500 Watts | 500 Watts |
| Screen Snapshot | Included | Included |
| Sonar Recording | Included | Included |
| Transducer Location | Transom | Transom |
| GPS Chartplotting | Included | Included |
| GPS Trackplotting | Included | Included |
| Lakemaster Compatible | Yes | Yes |
| Coastmaster Compatible | Yes | Yes |
| Navionics Compatible | Yes | Yes |
| Temperature Sensor | Built In | Built In |
| Included Transducer | XNT 9 HW MDI 75 T | XNT 9 HW MSI 150 T |
| HDMI Compatible | No | No |
| MEGA Live Compatible | Yes | Yes |
Key Differences
The Humminbird Helix 7 Chirp MDI GPS G4N fish finder has Dual Spectrum CHIRP and MEGA Down Imaging sonar capabilities. It is compatible with AIS, AutoPilot, Minn Kota US2 Sonar, Minn Kota Built-In MEGA DI, MEGA Live, One-Boat Network, Minn Kota i-Pilot Link, Minn Kota Talon/Raptor, NMEA 2000, and Radar.
The Humminbird Helix 7 Chirp MSI GPS G4N fish finder has the same Dual Spectrum CHIRP and MEGA Down Imaging sonar capabilities as the MDI, but it also has MEGA Side Imaging sonar. It is also compatible with the same AIS, AutoPilot, Minn Kota US2 Sonar, Minn Kota Built-In MEGA DI, MEGA Live, One-Boat Network, Minn Kota i-Pilot Link, Minn Kota Talon/Raptor, NMEA 2000, and Radar.
The key difference between the two fish finders is that the Humminbird Helix 7 Chirp MSI GPS G4N has MEGA Side Imaging sonar capabilities, which the MDI does not have.
Related Comparisons
- Humminbird Helix 7 Chirp MDI GPS G4 vs MSI GPS G4
- Humminbird Helix 7 Chirp MDI GPS G4N vs MSI GPS G4N
- Humminbird Helix 7 Chirp MDI GPS G4 vs G4N
- Humminbird Helix 7 Chirp MSI GPS G4 vs G4N
