Looking for assistance from the friendly folks of IDO on getting more familiar with my Humminbird. Coming from a world of Lowrance the last 7 years I am needing to learn more about Hbird and the unit I have on the new boat. I’ve done some of the settings tutorials on utube and continue to tinker.
The unit I have is the Helix 12 G4 Chirp MSI+ and MDI+. On my boat invoice it also says I have the Hbird XNT 9 HW-T X-Ducer. I’m assuming this second ducer is the high speed ducer? Why do I need this? Also, which ducer should I be selecting on the unit?