Humminbird HELIX 5 SERIES Operation Manual page 11

Dual Beam Ice Transducer
(with optional-purchase XI 9 20 Ice Transducer)
The XI 9 20 Ice Transducer provides selectable
dual-frequency sonar with a wide area of coverage.
Selectable dual-frequency gives you the option of
two beams, and both beams will cover the bottom
and provide high definition. The 20° center beam
provides the highest definition, while the 60° beam
provides wider coverage. Depth capability is
affected by such factors as bottom hardness and
water conditions. Whether fishing in shallow or
very deep water, selectable dual-frequency is ideal
for a variety of conditions.
NOTE: Contact Humminbird Customer Service to
determine which accessory transducers are compatible
with your control head, or visit our Web site at
humminbird.com.
5
How Sonar Works