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Comparison Table

Humminbird Helix 7 Chirp MDI GPS G4
Humminbird Helix 7 Chirp MSI GPS G4
Display Size7″7″
Display Resolution1024H x 600V1024H x 600V
Standard SonarsDual Spectrum CHIRP, MEGA Down ImagingDual Spectrum CHIRP, MEGA Down Imaging, MEGA Side Imaging
Coverage20°, 42°, 60° & (2) 86° @ -10dB20°, 42°, 60° & (2) 86° @ -10dB
CHIRP Frequencies83/200 (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 Frequencies50/83/200/455/800 kHz & 1.2 MHz50/83/200/455/800 kHz & 1.2 MHz
Sonar Depth1,200 ft (standard transducer), 3,500 ft (optional 50 kHz)1,200 ft (standard transducer), 3,500 ft (optional 50 kHz)
CHIRP Imaging Frequencies455 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 Depth400 ft (455 kHz), 75 ft (MEGA)400 ft (455 kHz), 75 ft (MEGA)
Side Imaging Range800 ft (455 kHz)800 ft (455 kHz), 250 ft (MEGA)
Memory CardSingle Micro SDSingle Micro SD
CompatibilityAIS, AutoPilot, Minn Kota US2 Sonar, Minn Kota Built-In MEGA DIAIS, AutoPilot, Minn Kota US2 Sonar, Minn Kota Built-In MEGA DI
Power Input10.8-20 VDC10.8-20 VDC
Power Output Max4000 Watts4000 Watts
Power Output Cont.500 Watts500 Watts
Screen SnapshotIncludedIncluded
Sonar RecordingIncludedIncluded
Transducer LocationTransomTransom
GPS ChartplottingIncludedIncluded
GPS TrackplottingIncludedIncluded
Lakemaster CompatibleYesYes
Coastmaster CompatibleYesYes
Navionics CompatibleYesYes
Temperature SensorBuilt InBuilt In
Included TransducerXNT 9 HW MDI 75 TXNT 9 HW MSI 150 T
HDMI CompatibleNoNo
MEGA Live CompatibleNoNo

Key Differences

The Humminbird Helix 7 Chirp MDI GPS G4 fish finder has Dual Spectrum CHIRP and MEGA Down Imaging sonar capabilities, and is compatible with AIS, AutoPilot, Minn Kota US2 Sonar, and Minn Kota Built-In MEGA DI.

The Humminbird Helix 7 Chirp MSI GPS G4 fish finder has Dual Spectrum CHIRP, MEGA Down Imaging, and MEGA Side Imaging sonar capabilities, and is also compatible with AIS, AutoPilot, Minn Kota US2 Sonar, and Minn Kota Built-In MEGA DI.

The key difference between the Humminbird Helix 7 Chirp MDI GPS G4 and the Humminbird Helix 7 Chirp MSI GPS G4 fish finders is that the latter also has MEGA Side Imaging sonar capabilities.

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Source

Humminbird