Humminbird 365i Fish Finder User Manual


 
4
DualBeam PLUS™ Sonar
Your 300 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. 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.
How Sonar Works