Humminbird Helix 7 CHIRP SI GPS G2 Side Imaging Sonar fish finder

Sonar-Standard CHIRP Down Imaging, CHIRP Side Imaging, DualBeam PLUS. Humminbird Helix 7. Below is taken from the Humminbird site:-. Sonar-Optional 50 kHz, 50/Low Airmar CHIRP. Depth-Sonar 1,500 ft (standard transducer), 2,500 ft (optional 50 kHz), 2,500 ft (optional Airmar CHIRP).

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