The HELIX 7 CHIRP SI GPS G4 fish finder features CHIRP Side Imaging, CHIRP Down Imaging, Dual Spectrum CHIRP Sonar, AutoChart Live, Internal GPS and Humminbird Basemap built-in.

The HELIX 7 CHIRP MEGA SI GPS G3 NAV+ fish finder features MEGA Side Imaging, MEGA Down Imaging, Dual Spectrum CHIRP Sonar, AutoChart Live, GPS and Humminbird Basemap built-in. The 7", ultra-wide display gives you ample room to view the many pre-loaded split screen view options.

The HELIX 7 CHIRP GPS G2N fish finder features CHIRP Digital Sonar, ethernet networking capability, Bluetooth® connectivity, one-of-a-kind AutoChart® Live and the new Humminbird Basemap cartogrophy built-in. The 7", ultra-wide display gives you ample room to view screens side-by-side with detailed cartography screens.

We've seen using chirp. Number one the display provides more detail a clearer picture of the water column. And better definition of schools of bait fish and game fish.

All HELIX 7 G4N models support Ethernet networking, Bluetooth(R), NMEA 2000(R), Wi-Fi and are compatible with the One-Boat Network(TM), which means you'll have total control of your fishing machine at your fingertips.

Best Overall: Helix 5 CHIRP DI GPS G3 For a clear view of structure and fish below the boat, CHIRP sonar sends a long pulse of energy into the water and uses two signals for a stereoscopic image with improved definition and separation.

HumminbirdPC™ is a tool to help you manage your navigation data from your Humminbird units and MMC/SD cards by organizing your waypoints, routes and tracks. It is also used for updating software in your software up-gradable unit if it does not have a card reader.

The HELIX 7 also comes with essential navigation features like AutoChart Live real-time mapping and GPS and Humminbird Basemap built in.

The HELIX 7 CHIRP SI GPS G2N features a large 7 display with LED backlight, CHIRP-ing Side Imaging, Down Imaging and 2D sonar. Includes GPS chartplotting, built-in Bluetooth, Ethernet networking capabilities, AutoChart Live with depth, vegetation and bottom hardness mapping.

The HELIX 9 CHIRP MEGA SI GPS G2N features a large 9 display with LED backlight, CHIRP-ing MEGA Side Imaging, MEGA Down Imaging and 2D sonar.

CHIRP stands for “Compressed High Intensity Radar Pulse.” That's a fancy way of saying it can show you fish that other forms of 2D sonar can't. How's that? CHIRP scans the water for fish similar to the way the seek function on your truck's radio scans the airwaves for FM stations.

CHIRP sonar resolves images better than the traditional sonar we've been using for decades.

With Helix, the Unlimited 400 Internet is definitely a good choice. Thanks to the high-performance Helix Fi gateway, you can enjoy the ultrafast Wi-Fi 61 technology and a strong signal that extends throughout your home.

All HELIX 7 G4N models support Ethernet networking, Bluetooth(R), NMEA 2000(R), Wi-Fi, and are compatible with the One-Boat Network(TM), which means you'll have total control of your fishing machine at your fingertips. Features: Keypad control: Master HELIX at the touch of a button.