Humminbird 409380-1 Marine GPS System User Manual


 
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Side Imaging® Frequencies and Coverage
Side Imaging® sonar uses two very precise sonar beams that are directed to
either side of the boat. The beams “illuminate” the bottom contour, structure,
and fish, and the results are displayed in a “picture-like” image on the screen.
Frequencies: The side beams operate at a frequency of 455 kHz. Your
Side Imaging® transducer also provides DualBeam PLUS™ sonar
coverage at 200/83 kHz.
Side Imaging® Beams are extremely narrow from front to back, and
provide “thin slices” of the bottom for high resolution imaging.
Side Imaging® Range: 240 feet to each side, with a total side coverage
of 480 feet, with a depth limitation of 150 feet, depending on the
contour of the bottom and when the side beam frequency selection is
set to 455 kHz. The total coverage under the boat is 180 degrees.
455 kHz provides maximum coverage with 180° total beam width
What’s on the Side Imaging® Display