Sonar operational principles

1. Deeper can be operated at two different frequencies (Dual Beam). Precise narrow beam (15°@290kHz) is used for high accuracy returns of fish, structure, detail and bottom profile. Wide beam (55°@90kHz) provides ample search area for fish, bait fish and bottom structure.

It is best to use low frequency (90 kHz) setting to figure out, where the fish are and switch to the high frequency (290 kHz) setting to get more accurate information about fish position and bottom structure.

By default, Deeper is set to high frequency (290 kHz) setting, which is designed for best performance and longest battery life.