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transducer cable needs to be ex-
tended
longer
than 10
feet,
the
depth
sounder
and transducer
will need to be
returned to the
factory
for
re-alignment.
1vo other transducers are
avail-
able for
your
EAGLE
depth
sounder. Model XD-2 is a
high
speed plastic
unit that can be
transom mounted or can shoot-
thru-hull. It works well on
deep
vee hulls and aluminum boats.
The other transducer
(Model
XD-3)
is for
trolling
motor
mounting
or shoot-thru-hull.
Fig.
3
XD-3
Ji
A
special
bracket
is available
for
the XD-2
transducer that will
put
it below
the severe cavita-
tion
layer
that is sometimes
present
on
aluminum boats. The
model number for
this bracket
is
XMB-2.
1.
Mounting
inside the hull
is
recommended for
fiberglass
hulls in an area that
does not
have air bubbles in the resin
or
separated fiberglass layers.
The sonar
signal
must
pass
through
solid
fiberglass.
A
successful transducer installa-
tion can be made on hulls
that have flotation materials
(such as wood or
foam)
in be-
tween
layers
of
fiberglass
if
the material is removed from
the
chosen area. For
example,
some
manufacturers use a
layer
of
fiberglass,
then a core
of balsa
wood,
and
then the
outer
layer
of
fiberglass. By
removing
the inner
layer
of
fiberglass
and the balsa wood
core,
the
outer
layer
of
The
signals
returned
from a
rocky
bottom
are
quite
confusing
when
you
first see
them.
The EAGLE's
dial will indicate
the
level of the bottom at
the correct
depth,
but
it will also show
clear
thin
signals
above and
below the wider main
bottom
signal.
This is
explained by
the fact
that the rocks near the
outer
edge
of the cone
of sound waves are
farther from the
transducer than those
in
the
center,
while
the
tops
of the latter
are closer than the
bottom.
This
drawing
also
shows
the
typical sig-
nals
indicating
a
school of
white bass or
bluegills
at a
depth
of
twenty
feet.
The
sig-
nals are
brighter
than
those returned
by
bait
fish.
3 16
Fig.
2
SIGNALS RETURNED BY A ROCKY BOTTOM
XD-2
SHOOTING THROUGH
THE
HULL
Fig.
20
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