Eagle 101 User Manual

When
you
are hunt-
ing fish,
with the
gain
adjusted
properly
to
return a
clear,
bright
signal
from
a bottom
of
gravel, sand,
or
shell, you
will
some-
times see
the
signal
disappear.
This doesn't
mean that
you
have
suddenly
come to ex-
tremely deep
water
—
the dial
would have
shown the
drop-off
with a
wide
band of
signals
in
this case.
Instead, your
boat
is
now
above a mud bot-
tom. Mud
absorbs
the
sound
waves. Thrn
up
the
gain.
The
bottom
signal
may
be
faint
from a
bottom of de-
caying
vegetation
under
deep
water Fish
will still
show on
the
dial,
however.
Back
over a
hard
bottom,
you'll
get
multiple
signals.
the
mounting
holes at the
top
of the slots in
the bracket.
6. Mount the
assembly
to the
transom
with two #10 screws.
Align
the face of the trans-
ducer with the bottom of the
hull
with a
straight edge.
Tighten
all screws.
7.
Route the transducer cable to
the
depth
sounder unit. Do
not cut the
transducer cable.
If it is too
long,
coil and store
the
excess in an out-of-the-
way
location.
8. Make a test run to
determine
the results.
Some boat hulls
require lowering
the back
edge
of the
transducer 2° to
6°. If
the run was
satisfactory,
drill two
more holes in the
bottom of
the slots and install
two more #10
screws. Note:
The transducer must
be
against
the
transom for
good
results.
After
locking
in
place,
fill
any
voids
between the
transom and the
transducer
with
caulking compound,
epoxy,
or
silicone adhesive.
OPERATION
SENSITIVITY AND
"ON-OFF"
KNOB
This knob
operates
in a
manner
similar to
the volume control on
a radio.
timing
the
knob
clockwise will turn
the unit
on,
and
turning
the knob back the
full
counterclockwise
position
will
turn the unit off.
timing
the knob in
a continued
clockwise
manner will increase
the
receiver
sensitivity
and
weaker
echos from
deeper
water
can and
will be observed on the
dial. After
mounting
the trans-
ducer,
turn the unit
on
by
turn-
ing
the
sensitivity
knob
clockwise. You
will see the con-
stant surface
signal
at zero. Be-
fore
long, you
will see
another
signal
—
at
ten feet if the water
is ten
feet
deep.
This
signal
indi-
cates the bottom.
It, too,
should
always
show.
Continue
turning
the
Sensitivity
control toward
the
right
and
you
will see a second bottom
signal
at
double the
depth
of the
first,
or 20
feet. The sound
waves have
hit
bottom,
bounced
back,
hit
the
surface of
the
water,
then
bounced down and
up again.
Over a firm bottom
you
can in-
crease the
sensitivity
until the
dial shows three
or four bottom
signals
at
multiples
of true
depth.
The
sensitivity
is
adjustable
and
you
should
always
set it
to re-
turn a
steady
bottom
signal
—
nearly
as
bright
as the
zero
sig-
nal
—
regardless
of
depth.
'lUrn
the
knob
counterclockwise
when
you begin
to
get
the
double bot-
tom
signal;
clockwise
when the
bottom
signal
begins
to
fade. lb
show
fish the
sensitivity
control
should be set
to show a
strong,
bright
bottom
signal.
Many
fishermen
prefer
to run
the sen-
sitivity
control
very
high
with
the second
bottom
signal
show-
MUD
BOTTOM
CAUSES THE
SIGNAL TO
FADE
Mud and
decayed vegetation
FIg.
17
13
6
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Eagle 101 Specifications

General

Brand	Eagle
Model	101
Category	Sonar
Language	English