Selecting The Correct Type Of Transducer; Transducer Types - Raymarine L470 Instruction Manual

M78898
Transom-mount
transducer
M78946
In-hull
transducer transducer for
transom mount

Selecting the Correct Type of Transducer

Before you begin the installation, double-check to be sure you have the
correct type of transducer. Each kind of transducer is designed for a
particular type of use. In this manual we will include detailed mounting
instructions for the transom-mount transducer. We will also include some
general information on the other types. For detailed information on these
other transducers, see the instructions which are packaged with the unit.
Use a transom-mount transducer if –
. . . your boat has an outboard or inboard-outboard engine(s), and if you're
planning to use the Sidelooker option. This type of transducer must be
mounted ahead of or beside the propeller(s). Do not use this type of
transducer for a boat with a straight-shaft inboard engine.
Use a thru-hull transducer if –
. . . your boat has a straight-shaft inboard engine. This type of transducer
is installed in a hole drilled through the hull.
Use an in-hull transducer if –
. . . you have a high-speed boat or if, for some reason, you cannot use a
transom-mount or thru-hull transducer. The hull may be no more than 1" thick.
Installation
M78923 M99-142
Thru-hull Fairing for
transducer thru-hull transducer
M78930 M78929
Sidelooker Sidelooker
transducer for
trolling motor
Fig. 2-1
Transducer
Types
5