TRANSDUCERS AND CONE ANGLE
The sound waves from
the transducr go
down ihto the water in a cone
shaped beam, much like the beam frOm a
flashlight The
angle betWeen
the
outside
edges of
the cone is called the cone angle.
Lowrance offers a choice of transducers with either an 8 or 20 degree
cone angle
that will interchange
with any!
of the 192 kHz sonar products.
In other
words, any
Lowrance sonar instrument can be used with any
Lowrance transducer of
the same
frequency
without
retuning
of
any kind,
and no loss of
performance.
However, the use of
any other manufactur-
ers' transducer will result in a loss of
performance.
Generally, wide cone
angle transducers
(20 degrees)
are ideally
suited
for
operating
in shallow to medium water
depths.
The 20
degree
cone
angle
allows you
to see more of the underwater world. In 15 feet of water
the 20 degree
cone covers an area that's about six feet across. The 8
degree
transducer covers only
about a two foot circle.
_________ 50'
150'
For easier reading,
the size of the
digital numbers can be doubled by
pressing
2nd-2.
To return them back to the smaller
size, press 2nd-2
again.
The numbers must be
displayed
on the screen before
you press
2nd-2.
23 ! 12
BOTTOM
DEP11-l
Depth Cone Angle
Diameter
§:-
50
boo 7ft. 18ft.
14 35••
liso
200 21 53
28 71•
Figure 9
100'
iumIIIHhi
Figure 20
200'
8°at3db
F: Li
Figure 10
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