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Selecting a Transducer
Introduction
Transducers
The transducer acts as the eyes and ears of your sonar, transmitting sound waves toward the bottom in a
cone shape. Proper transducer selection and installation are important to the operation of your unit. It is best
to select a transducer that suits the depth of the water that you are on.
A wide cone angle transducer works best in shallower water, providing a large coverage or viewing area,
but at a decreased bottom resolution. In deep water this can result in a large area where fish cannot be seen.
A narrow cone angle transducer is better suited to deep water installations, providing a smaller coverage
or viewing area than a wide cone transducer, but with improved bottom resolution and a smaller dead zone.
Optional Transducers:
Included in the Optional Packages (p. iv) are transom mount transducers and separate speed sensors.
These transducers provide good all-around performance. In addition, a variety of optional transducers are
available from your local dealer or direct from Garmin.
• 200/50kHz, 12/45°, plastic, transom mount, depth, temp
• 200/50kHz, 12/45°, plastic, transom mount, depth, temp, speed
• 200/50kHz, 12/45°, bronze, thru-hull mount, depth
• 200/50kHz, 12/45°, bronze, thru-hull mount, depth, temp, speed
• 200/50kHz, 12/45°, bronze, thru-hull mount/long stem, depth, temp, speed
• 200/50kHz, 12/45°, plastic, thru-hull mount, depth
• 200/50kHz, 12/45°, plastic, adjustable. in-hull mount
• 200kHz, 14°, plastic, transom mount, depth
• 200kHz, 14°, plastic, transom mount, depth, temp
• 200kHz, 14°, plastic, transom mount, depth, temp, speed
• 200kHz, 8°, plastic, transom mount, depth, temp
• 200kHz, 8°, plastic, transom mount, depth, temp, speed
• 200kHz, 12°, bronze, thru-hull mount, depth
• 200kHz, 12°, bronze, thru-hull mount, depth, temp
• 200kHz, 9°, bronze, thru-hull mount, depth, temp, speed
• 200kHz, 12°, plastic, thru-hull mount, depth
• 200kHz, 12°, plastic, thru-hull mount, depth, temp
• 200kHz, 14°, plastic, in-hull mount, depth
• 200kHz, 14°, plastic, trolling motor mount, depth, temp
X
X
dead zone
fish not seen
Wide cone angle
Narrow cone angle
250C Manual.indd v 1/27/2004, 3:54:48 PM