Humminbird 737 Fish Finder User Manual


 
3
QuadraBeam PLUS™ Sonar
Your 700 Series™ Fishing System supports
QuadraBeam PLUS™ sonar. QuadraBeam
PLUS™ sonar provides an extremely wide 90°
area of coverage. QuadraBeam PLUS™ starts
with two fan-shaped 35° 455 kHz Side
Structure locating sonar beams to spot fish,
bait and structure to the left and right of the
boat over an area of the bottom that’s always
equal to twice your depth. For a detailed view
below the boat, QuadraBeam PLUS™ uses
DualBeam PLUS™ technology, with precision
20° and wide 60° beams. QuadraBeam PLUS™
finds more fish faster, and can even tell you
where to put your bait by showing if fish are to
the left, right or directly beneath your boat.
DualBeam PLUS™ Sonar
Your 700 Series™ Fishing System uses a 200/83 kHz DualBeam
PLUS™ sonar system with a wide (60°) area of coverage.
DualBeam PLUS™ sonar has a narrowly focused 20° center beam,
surrounded by a second beam of 60°, expanding your coverage
to an area equal to your depth. In 20 feet of water, the wider
beam covers an area 20 feet wide. The 20° center beam is
focused on the bottom, to show you structure, weeds and cover.
The 60° wide beam is hunting for fish in the wide coverage area.
DualBeam PLUS™ sonar returns can be blended together, viewed
separately or compared side-by-side. DualBeam PLUS™ is ideal for
a wide range of conditions - from shallow to very deep water in
both fresh and salt water. Depth capability is affected by such
factors as boat speed, wave action, bottom hardness, water
conditions and transducer installation.