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Single beam sonar – Humminbird 561 User Manual

Page 11

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4

How Sonar Works

Single Beam Sonar

(550, 560)

The 550 Fishfinder and 560 Fishfinder use a
200 kHz single beam sonar system with a 20°
area of coverage. Depth capability is affected by
such factors as boat speed, wave action, bottom
hardness, water conditions, and transducer
installation.

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