Eagle SILENT 101 INSTALLATION INSTRUCTIONS

sound ends at the bottom. But

an echo is also returned from

any object

ducer and the bottom.

As

you

a

deep

will

dial until it
dial is

100

feet,

deep.

bottom

again.

shows to 100 to

depth.

dual

change
you go deeper

SIGNAL INTERPRETATION
Because

tremely

it can

ture of the kind of bottom over

which
bottom
shell,

bright,
are

traveling

and the

means that

between the trans-

move

away

the bottom

lake,

gradually

calibrated

Continue

signal

Add whatever

Other

ranges

to a

move around the

reaches zero. If the

water is 100 feet

the

further,

will start around

get

Eagle

that

deeper

than 100 feet.

your Eagle

sensitive and

give you

your

of firm

or hard

fairly

signal

an accurate

boat is

sand, gravel,

clay

wide

over such a

weakens,

you

from shore on

signal

to a

figure

the

models have

allow

scale when

depth

and the

correct

you

of

it

to

is both ex-

powerful,

pic-

passing.

returns

signal.

have moved over

A

a

If

you

bottom

it

a soft mud bottom. A soft bottom

absorbs the sound waves

a weak

turns

simply

a

good

get

turn

bottom

signal.

the

up

reading.

A level bottom with scattered

rocks returns
signal — plus

both above and
caused

the usual bottom

secondary signals

below it. This is

the different distances

by

the sound waves travel. Those

that

go straight

come back

and

rectly,

that the

above the level of the bottom.

But the sound

down,

indicate,
top

waves that hit a

and re-

In this

sensitivity

hit a

cor-

case,

rock,

of the rock

to

is

rock toward the outer
cone of sound waves and are re-

flected back to the

travel further.

their

signals appear

bottom

signal.

A smooth bottom
returns a

Broken rock of various sizes
sends back an even wider
with occasional flashes above

wide, bright signal.

transducer

Consequently,

below

of solid rock

edge

of the

the

one,

and below the level of the true

bottom, though

these

signa]s

aren't so distinct as the ones re-

turned

smooth bottom.

rocks or

Big

bottom send back

the level of a smooth

distance
height.

proach a post

will often see the

you

climb
side as

A

steep slope

the

nal,
the

signal

underwater cliii
widest. The sure

drop-off

the

regular depth signal

wide
width,

or

deeper

Brush will
varying heights

tom
with

return weaker

scattered rocks on a

by

stumps

depending

If

you

or a

then descend the other

up,

continue.

you

on a smooth

signals

bottom,

on their

watch as

tree,

you ap-

however,

signal

returns a wide

the

steeper

wider,

returned from a

the

being

of a

is the sudden

then back.to the

one,

proof

change

to a

but either more shallow

as the boat moves

return flashes of

above the bot-

signal.

the

Weeds also tie in

bottom, although they

signals

than

above

the

sig-

with

high

of

usual

past.

brush or tree limbs. In most

lakes,
more than 12 or 15 feet

cause of the lack of

Weeds make a

pale signals

weeds don't

great many thin,

on the

in water

grow

deep

sunlight.

dial.

be-

DETECTING

0

Gravel or

I

14

Ag.

Hard

Ciay

A

SMOOTH BOTTOM

The nicest bottoms

to

survey

EAGLE

return

signal,

either

it from scattered

This is the easiest
tom
read and fish at

depth

plainly

Nothing

gratifying

a

big

largemouth
clean

eyes

sandbar

these two
like and that are

to fish
bumping technique.

It is

tiple signals

with

your

are those that

a

clear,

of all to

is

more

bright

spikes

any

with no

above or below

signal

above it show

on the dial.

than to find

school of

bass over

gravel

over a smooth

or wall-

—

places

popular

the bottom-

by

to

easy

on the

get

rocks.

that

fish

easy

mul-

dial from bottoms of
this

over water 20 feet

deep,

turn

get signals

40 feet.

type.

for

the

up

If

example,

you

are

gain you'll

at 20 and

bot-

up

and

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9

10

WEAK SIGNAL

The

trol on
might

sensitivity

your

be

compared

the volume on a

'ibm the

knob to the
you

ceiver

it to

reduce it.

is

provided

can use
over both
shallow water

should

the

bright

shows on the

gardless
you

have
tom

will

in the

the

bottom. This

is

shown in the

ing

sensitivity

increase the

sensitivity;

the left and

This

your

deep

always

so that a

gain

bottom

of

depth.

fail to do

a

only

signal
fail to show

the dial

water between

transducer and

above

—

are there but
aren't shown on

dial because
is

set too low.

con-

EAGLE

radio.

and

right

re-

you

feature

so that

EAGLE

and

and

adjust

signal

dial,

If

so and

faint bot-

fish

condition

draw-

the

fish

they

the

the

gain

INDICATES GAIN

to

turn

you

you

re-

the

TOO LOW

Fig.

15

12

Fig.

Fish, 17 ft.

Depth,

constant

on a disc driven
governed

lighted every

ter

reference
is used

measure
cator

on. Even

flashes,

the human
nearly

The bulb

point
the

the

by

sound waves to

and
ieturned

vater

bottom fire the
these

show

—

or

the water.

sound

down into

go

speed

motor.

time

fires. This

point

as a

starting point

depth,

that the

though

it

happens

eye

constant

also flashes at the

on

the dial that

Fhe

depth.

length

of time it

return. In

from

between the

echoes are

the exact

number of fish

any

And

Waves from the

the water in a nar-

35 ft.

behind

the dial

an

by

accurately

The bulb is

the transmit-

provides

on the

and

depth

sees it

a visual

dial which

to

as an indi-

sounder is

the neon bulb

so. often

that

as a

light.

indicates

is indicated

point

takes the

reach the bottom

addition,

any object

bulb,

also

depth

because the

echoes

in the

surface and

too. Since

timed,

of

they

fish

any

—

in

transducer

row cone

a matter

location

At a

covers a

mately

15 feet it is

feet,
diameter

gardless

angle, they tell,
of a few

as well as the

depth

circle that is

one foot in

three feet

is four feet wide. Re-

of

feet,

of 10

feet,

two feet

wide,

depth,

the cone of

within

the fish's

depth.

the cone

approxi-

diameter;

at 20

wide,

the cone

at

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ii

S

to

ing
the

fish.

insure that

underwater

Depths greater

detail as

than 100 feet can

also be measured on the
For

instance,

from 90 feet to 110

goes
will

see the bottom

dial move
to the 10-foot

scale.

Thus,

lution, depths

be read

may
to the

reading

If in doubt as to

off until scan disc

as the water

the "zero"

past

marlc on the outer

on

the second revo-

of 100 to 200 feet

by adding

on the dial.

depth,

they

signal

stops.

see all

well as

Eagle.

depth

feet, you

on the

signal

100 feet

turn unit

Thrn

unit back on and watch to see if

bottom
olution

does,

plus

signal completes

before

you

100 feet. If the

stopping.

are at the

one rev-

If it

depth

signal

shown

PRINCIPLE

)flfl)flflflflflflfl)flfl

Fig.

SIGNAL SENT BY LOCATOR BOUNCES BACK 'FRoM

TARGET. TIME

11

LAPSE INDICATES DISTANCE

travels around the dial

plus

will

200 feet.

times, you
shown

HOW TO USE

at the

be

YOUR

EAGLE DEPTH
SOUNDER

'rhe word "Sonar" is

ation of

Ranging.

ing

Sound,

World

It

was

War

tracking enemy

Sound travels at

feet

4,800
water as

mately 1,100
through

OF SONAR

second

per

compared

feet

air.

(((((

transmitted

When this wave strikes

it rebounds.

ject,

of sound

known,

the transmitted

received echo

and the

determined.

The

Eagle

mits a

wave (which

as

well

water. At the same

intensity

into the water.

through

time

the

can be measured

distance to the

depth

high frequency

is inaudible to fish

as

humans)

neon

an abbrevi-

Navigation,

developed

II as a means of

submarines.

approximately

through

to

approxi-

second

per

(((N

TO TARGET

Since the

water is

lapse

signal

sounder

through

time, a high

bulb whirls at a

two

depth

and

dur-

an ob-

speed

between

and the

object

trans-

sound

the

HARD

Sand bottom

4.

Fig.

CLAY, SAND, GRAVEL,

16

SHELL

BOTTOMS

Some

fish, including

bass, catfish, walleyes,

and

crappies,

sionally
the bottom. Even here

lie

right

the EAGLE will show

them as
provided

smooth

gravel. Signals

appear

both above and below

you pass

the bottom is

sand, shell,

on the dial

the clear bottom

nal, just
over a

The reason for this

is that the

turning
near

cone of sound doesn't

travel
signal

the same as

rocky

signal

from a

the center of the

so far as the

that hits a fish

near the outer

the cone. Con-

sequently,

from the

middle shows above

the

fish in the

the bottom while the

signal
near

below the

from the fish

the

edge

bottom.

occa-

on

over,

will

sig-

bottom.

re-

fish

edge

signal

shows

or

of

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7

12

MUD

ing fish,

adjusted

return a

signal
of

shell, you

times see

disappear.

mean that

suddenly

tremely deep

the dial

shown the
with a

signals

now

tom. Mud
sound
the

signal

from a

caying

under

will still
dial,

over a
you'll

signals.

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BOTTOM

When

gravel, sand,

Instead, your

above a mud bot-

waves. Thrn

gain.

may

bottom of de-
vegetation

deep

however.

hard

get

are hunt-

you

with the
properly

clear,

from

would have

wide

in

bright

a bottom

will

some-

the

signal

This doesn't

have

you

come to ex-

water

drop-off

band of

this case.

absorbs

The

bottom

be

faint

water Fish

show on

Back

bottom,

multiple

CAUSES THE

gain
to

or

—

boat

is

the

up

the

Mud and

SIGNAL TO

decayed vegetation

13

FADE

FIg.

17

the

mounting

of the slots in

6. Mount the

transom

the face of the trans-

Align
ducer with the bottom of the

hull

with a

Tighten

7.

Route the transducer cable to

the

depth

not cut the

If it is too

the

excess in an out-of-the-

location.

way

8. Make a test run to

the results.

require lowering

of the

edge

6°. If

the run was

drill two

bottom of

two more #10

holes at the

the bracket.

assembly

with two #10 screws.

straight edge.

all screws.

sounder unit. Do

transducer cable.

coil and store

long,

determine

Some boat hulls

the back

transducer 2° to

more holes in the

satisfactory,

the slots and install

screws. Note:

The transducer must

the

against

results.
fill

any

transom and the

with

caulking compound,

epoxy,

transom for

After

locking

voids

between the

transducer

or

silicone adhesive.

OPERATION

SENSITIVITY AND
"ON-OFF"

This knob

similar to

KNOB

in a

operates

manner

the volume control on

to the

be

good

in

place,

a radio.

top

clockwise will turn

and

full
will
the knob in

clockwise

the

weaker
can and
dial. After

ducer,

ing

clockwise. You

timing

turning

counterclockwise

turn the unit off.

manner will increase

receiver

echos from

will be observed on the

mounting

turn the unit

the

sensitivity

stant surface

fore

long, you

—

signal

is ten

cates the bottom.

always
Continue

control toward

will see a second bottom

at

double the

or 20

hit

surface of
bounced down and

Over a firm bottom
crease the
dial shows three

signals

depth.

The

you

turn a

nearly

nal
the

knob

you begin
tom

bottom

show

should be set

bright
fishermen

sitivity

the second

6

at

feet

deep.

show.

turning

feet. The sound

bottom,

bounced

the

sensitivity

at

multiples

sensitivity

should

always

steady
as

bright

—

regardless

counterclockwise

to

signal;

clockwise

signal

fish the

bottom

prefer

control

bottom

the

knob

the unit

on,

the knob back the

position

timing

a continued

sensitivity

will see the con-

signal

will see

ten feet if the water

This

the

depth

water,

or four bottom

is

bottom

as the

of

the

get

begins

sensitivity

to show a

signal.

to run

very

and

deeper

water

the trans-

on

turn-

by

knob

at zero. Be-

another

signal

It, too,

the

adjustable

signal

should

Sensitivity

and

right

signal

of the

up again.

you

first,

waves have

hit

back,

then

can in-

until the

of true

set it

to re-

signal

zero

depth.

'lUrn

when

double bot-

when the

to

fade. lb

control

strong,

Many

the sen-

with

high

show-

indi-

you

the

and

—

sig-

Fig. 7

and bubbles.

Also,

the bracket

or transducer should not in-

terfere with the boat trailer

or

hauling

3.

'T'pically,

should be
tween the
transom and the outside

of the

of

the boat.

the transducer

located

center of the

hull.

(See

halfrway

Figure

edge

8.)

be-

SIGNALS FROM

STEEP,

ROCKY LEDGES

6. Use a

epoxy

good quality two-part

to bond the

transducer

to the hull. Do not use

silicone rubber sealer or
adhesive that

rock hard.

tions on the
and mix it

a small

face of the transducer and

1/16" thick level into the

pour
area contained

dam. Place the
into the

turning

bubbles out from under the

transducer face. The trans-

face should

ducer

with the boat

minimum amount of
between hull and transducet

Weight

until the

Route the transducer cable

7.
along gunwales

from

TRANSOM MOUNT

1.

Loosely

the transducer

hardware

2. Locate the
flow of water

with minimum turbulence

the transducer

power

does not

Follow the instruc-

epoxy package

thoroughly.

amount on the entire

the

by

transducer

epoxy by pushing

to force

hull,

epoxy

cables.

attach

the brackets to

with the

provided.

all of

be

with a

cures.

and

away

clay

the

parallel

epoxy

bracket where the

is smoothest

any

get

Apply

and

air

down

The

transducer should be

mounted

or other hull

ribs,

away

from

fittings

stakes,

that can cause turbulence.

4. If the hull deadrise exceeds 4

degrees,
mount on the

the hull or an

ducer should be used.
Figure

9

Fig.

k

\

5. Place the bracket

transom in the selected area

with the bottom of
ducer flush with the bottom

the hull.
with
hull

Mark thetransom for

a shoot-thru-hull

centerline of

optional

9.)

DEAD

RISE 100

the transducer

Align

the bottom of the boat

by using a straight edge.

trans-

(See

against

the

traps-

drilling

the

of

Fig.

18

Your EAGLE trans-

lates time into dis-

tance — the farther

the sound waves
the

longer

it

go,

takes

them to return to the
transducer and the

greater

shown on the dial.
Nowhere is this shown
more
when
over

underwater

cliff,

inclined at a

the

depth

clearly

your

a

than

boat

steep, rocky

ledge

either vertical or

Assume

steep angle.

the

top

passes

or

of

the cliff is 15 feet be-
neath

the surface of

the

water,

tom is
Sound waves will hit

rough spots

all the

the

result,

on the dial will cover

an area

from 15 to 50

condition that could

easily

sion until
stand it.

and the bot-

feet

50

way

lead to confu-

deep.

on

the cliff

down. As

the

signals

extending

feet

under-

you

—

a

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5

14

WIDTH

Small

bait fish

jlial

If

they

schooled

cover
five to ten
dial with
lines for

minnows at the bottom

of the

EAGLE will

even a
30

feet beneath

surface of

Obviously,

of

a

larger

flect the
the

back of

fish.

a

get
brighter signal

dial

you
size of the

the

signal,

you
you

ones

big

ones.

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OF SIGNAL

minnows or

appear

as thin

a

school. Your

big

Consequently,

wider and

and,

can't

a

good

can

pale

are

tightly

they may

of from

depth

feet on

a few

individual

indicate

single

surface to re-

minnow

the water.

the back

fish

offers a

signal

a small

on

even

though

tell the exact

fish from

it

does

clue

instantly

from little

on the

lines.

the

pale

the

than

you

the

give

so that

tell

INDICATES SIZE

15

OF FISH fiberglass

exposed.

Fig.

19

then be
this outer

5.)

the hole and the transducer

placed

is still

no weak

2. The chosen area

the aft one-third of the hull
on
of the

intakes in

Water should flow

in thjs area and it should

in the water at all

3. Before

the tratisducer to
trial runs are

to find the
cation. Once an

determined to be a
for the

mounted,

the

ducer in it face

will

epoxied

When

into the
structurally

points

planing boats,

engines

permanently bonding

transducer to be

and

area,

eliminate air between

and

The transducer can

layer. (See

epoxy

coat are face of the transducer and the

gel

Figure

poured

the hull

rigid

to

into

and

directly

is

epoxy,

are made.

should be

in

and forward

and/or water

displacement

hulls.

smoothly

stay

speeds.

the

recommended

best

hull,

mounting

lo-

area has been

good

spot

add some

water to
the

place

down. This

trans-

the

hull.

the transducer into

Plug

the unit and turn the

sounder on.

at all

transducer until the best loca-
tion is found for maximum

signal reception
minimum cavitation noise

(cavitation

turbulence and shows
narrow

sonar

4. If the chosen area is void of

potential problems,
surface of the hull and the

face of the transducer with

100

grit

face must be

that

the

face is in contact

hull

prior

5. Build

4

a small dam

caulking

ing

clay

area of

not

use

Figure

Operate

speeds

and move the

is caused

signals

dial.)

sandpaper.

flat

entire transducer

to

bonding.

compound

around

the transducer.

PLAY-DOH.)

7.)

the boat

and

by

all around the

sand the

The

enough

with the

out of

or model-

the chosen

(See

depth

water

as

up

sur-

so

(Do

transducer
tended

depth
will need to be

factory

Fig.

XD-2

other

'IWo

able for

sounder. Model XD-2 is a

speed plastic
transom mounted or can shoot-

thru-hull. It works well on
vee hulls and aluminum boats.
The other transducer

XD-3)

mounting

3

Fig,

XD-3

A

special

cable

needs to be ex-

longer

sounder and transducer

for

2

your

than 10

returned to the

re-alignment.

transducers are avail-

EAGLE

feet,

depth

high

unit that can be

(Model

is for

trolling

motor

or shoot-thru-hull.

Ii

bracket is available for

the

deep

the XD-2 transducer that will

it below the severe cavita-

put

tion
present

model number for this bracket is
XMB-2.

that is sometimes

layer

on aluminum boats. The

4

Fig.

XMB-2

SHOOTING THROUGH THE
HULL

1.

Mounting

recommended for

hulls
have air bubbles in the resin

or

separated fiberglass layers.

The sonar

through

successful transducer installa-

inside the hull is

in

an area that does not

signal

solid

fiberglass

must

pass

fiberglass.

A

tion can be made on hulls

that have flotation materials

(such as wood or foam) in be-

tween

layers

the material is removed from
the chosen

manufacturers use a

some

of

layer
of balsa

outer

layer

removing
fiberglass

the outer

core,

of

fiberglass

area. For

fiberglass,

wood,

of

the inner

example,

then a core

and then

fiberglass. By

the.

layer

and the balsa wood

of

layer

if

of

SIGNALS

20

Fig.

RETURNED BY A ROCKY

SILENT IDi

from a

are
when
them. The

dial will indicate the

level of the bottom at

the

it

thin

below

bottom

explained by

that the rocks near the

outer
of

farther
transducer than those

in the

the

are closer than the

bottom.

This

shows the

nals

school of white bass or

bluegills
twenty

nals are

those returned
fish.

BOTTOM

'Plie

signals

rocky

quite

you

correct

will also show

signals

the wider main

signal.

edge

sound waves are

from the

center,

tops

drawing

indicating

feet. The

returned

bottom

confusing

first see

EAGLE's

depth,

above and

This is

the fact

of the cone

while

of the

latter

also

typical sig-

a

at a

depth

brighter

by

clear,

sig-

than

but

of

bait

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TREES IN THE

The

dial

signals

shown here indi-

cate an underwater
tree

with a few fish

above it.
50

feet

20 feet
fish

and 13

Limbs at
depths

vidual
count for
band of

deep,

tall,

are between ten

feet

return indi-

signals

signals

dial. Brush

similar,

tall.

Bass

and

often

hang

submerged vegetation,

not

only

face

but down

depths
depending

thermocline

them,
stern

can't

signals
limbs.

come and

up

—

of 25 or

anchor

so

your boat

move. Constant

indicate tree

Signals

and down

limbs don't

on the

The water

the tree

and the

deep.

various

and ac-

the wide

on the

appears

though

not so

panfish

around

near the

to

30

on the

To detect

bow and

that

or shift

go

are fish

move.

is

sur-

feet,

WATER

Fig.

21

IMPORTANT

When

installing

make certain that the in-line

fuse

supplied

tached to the red conductor of

the

power

source as

power

will

protect

the

power

the

power

with the unit is at-

cable as close to the

possible.

both the unit

cable in case either is

cable,

This

and

ever shorted. A connector is

supplied
power

The

power
The unit is

dental
damage

connections are

the unit will not work.
MOUNTING

The
stalled in

tion which has a flat surface.

The
mounting

overhead

to attach the fuse to the

cable.

positive

depth

adjustable yoke permits

conductor in the

cable is

polarity

the red conductor.

protected

will result

sounder can

convenient loca-

any

on either a bottom or

supporting

from acci-

reversals

if

battery

wrong.

be in-

surface. If

and no

However,

the unit is to be located in the

vicinity
position temporarily

of a

compass,

sure it does not affect

readings.

changes,
cation.

running

test. Holes in the base of the
bracket allow wood screw

mounting.

Thread both

the

case. The
slots in the

the unit to

removing
These

of the

mounting bushing

If

compass heading

choose an alternate lo-

Note: the

when

you

knobs

mounting bushings

gimbal

of it that allows

top

"snap"

the

slots will clear the

gimbal knobs,

gimbal

run it in

to make

compass

unit must

make this

or bolt

partially

on

bracket

in

on the case.

has

without

knobs.

threads

but not the

be

into

the

The bracket sides will have to be

spread slighlty
bal

bushings,

their

original position

leased. Holes in the

bracket

bushings

align

to clear the

gim-

but will return

when re-

gimbal

with the

gimbal

on the case and will

to

not allow the unit to come off

even in severe wave conditions.

Th remove the

loosen the

the bracket sides

and

case,

unit, simply

gimbal

the unit

pull

knobs, spread

from the

away

and

up

out of the bracket.

TRANSDUCER
INSTALLATION

IWo different

mounting

are available to install

EAGLE

transom mount or shoot-thru-
hull.
mount will work on most

we recommend that the shoot-

transducer,

Although

the transom

thru-hull method be used

on solid
transducer

single

but will not

materials such as
The

through
the

gardless
method is

should

has minimum
air

is

The transducer

routed
cal

ducer cable if it

stead,

in

ducer extension

TEC-lO are

extend the cable 10 feet. If

fiberglass

signals

thicknesses of

go through porous

signals

fiberglass

also will not

air

pockets

laminations. Re-

of which

the

used,

be made in an area that

water

bubbles,

and where

the smoothest.

cable should be

from other electri-

away

wiring.

Do not cut the

coil it and

is too

store the excess

an unobtrusive area.

cables Model

available that will

methods

your

either

hulls,

hulls. The

will

wood or foam.

only

penetrate

fiberglass,

pass

or voids in

mounting

installation

turbulence,

the water

trans-

In-

long.

IIans-

the

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2

INTRODUCTION POWER CONNECTIONS

Thank

proof
believe that it

available

right

sion tolerances.

'Tb

fully enjoy

this

equipment

suggest
ual

thoroughly

tempt

this

product.

Please fill out the

and mail it

TRONICS. This will

your 1 year

We

suggest

original
was

shipped in,

needs to be

for

tory
tainer

for

you

EAGLE

selecting

depth

a

sounder. We

is the finest unit

manufactured

today,

here in the U.S.A. to

the

advantages

that

at

installation or use of

brings

you

before

to EAGLE ELEC-

FULL

that

carton that the

so that if it

returned to the fac-

repairs,

will be available.

a suitable con-

to

read this man-

you,

any

warranty

register

warranty

you keep

EAGLE

water-

preci-

we

at-

card

the

ever

Power for the
supplied by

electrical
picked up

power buss,
lems with electrical

which
flashes on
minimized

directly

Figure

If a

longer

quired,
cable available at

or electrical

should be soldered. If this can't

be

done,

Simple twisting

the boats 12-volt DC

system.

at an

but if

is indicated

the

by

to the

1.)

power

use

ordinary

supply

use

crimp-type splices.

result in intermittent

connections which can cause in-
terference.
electrical

Thpe

tape.

sounder

depth

Power

accessory

you

dial,

connecting power

battery

cable is re-

any

of

all

may

have

interference,

extraneous

by

it can he

(See

#18

lamp

hardware

store.

Splices

splices

power

splices

SPECIFICATIONS

Dimensions with knobs and
Dial 0-100 feet

Voltage

gimbals

Current Drain 250
Pulse Width

Output

Power 200 watts

. TB x 8"W x 6"D

12 volts D.C.
volts)

ma.,

200-1000

(typical)

25 watts

4 AMP FUSE

(operates

one echo

j.ts, adjustable

peak

RMS

to

peak

is

or

prob-

may

with

10-15

be

FISH SIGNALS

Here are some
help you

that

are

Eagle:
signal

A

while a small fish

things

understand the

displayed

fish returns a wide

big

a narrow one. A

fish or

near the

many thin,

signals
game

ent under the

lows

If

per

your Eagle, a single
deep
proximately

miles

second and the diameter of the

circle covered
is

that

by

half a
feet

approximately
This is a

because fish
horizontal

rather

exact

and a

has to be made

fish. Of

different

minnows,

surface,

rapid signals.

beneath

fish which are

school of little fel-

to feed on them.

are

you

hour while

cruising

hunting

will return a

one second.

hour is 4.4 feet

per

by

approximately

depth.)

The

a fish l54eet

second,

deep

widely

level,

signal

and from a fish 60

the

signal

two seconds.

good point

often school in a

plane,

scattered

but not

that lasts

course,

levels,

that

will

signals

on

your

returns

school of bait

nearly always

returns a

indicate the

often

great

Wide

pres-

at three miles

fish with

fish 30 feet

signal

the transducer

four feet at

signal

deep

sometimes

by

fish

even

for

(Three

per

returned

would last

would last

to remember

in that

all

vertically,
longer

more than one

suspended

if

only

ap-

a

few

inches

water,

nals at the

on the dial.
Remember,

fish like
ledges,

But,
these

unable to show the fish because

the

sloping

such a
Many

pended

face and bottom

weather.

lie at a uniform

higher

will return different

corresponding depths

sharp drop-offs, rocky

and underwater cliffs.

as

your

spots,

wide

kinds of fish remain sus-

between the water sur-

Crappies

or lower in the

kinds of

many

boat moves across

the

Eagle

bottom sends back

signal.

during

will

depth

a horizontal blanket in the

water.

A

school

big

in each direction and as

over it

constant

ing

low A school of white bass isn't
likely

a school of

does, especially

you

signal, plus

a few inches above and be-

to cover such a

crappie

and fall. The

these fish
spread vertically

The
bass

be so

bass, crappie,

and the individual

at

being larger,

signals.

occupying

larger game

and

walleye

tightly grouped

extend 100 feet

may

will

an

get

sometimes

in the summer

signals

(8

fish such as

aren't

or other

members,

return

sig-

game

will be

hot

usually

similar

you

pass

almost

other flash-

area as

big

will show

a

greater

to 10

feet).

likely

as white

panfish,

stronger

to

-

to

To

Volts DC

12

1

(Positive)

18

Fig.

1

Ground

(Negative)

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HOW TO

Electronics will

Eagle
Eagle parts

should

write us at the address
to

save

do have to return the unit
problem

testing

If

you

If

you

•

Should

sounder,

promptly.
EAGLE.

the

you

and

live out of
live in the

inconvenience of

that

you

repair

SCHEMATIC

desire a

you

send

$1.00

Please

provide

ever

you

below before

are

having

of

your depth

Mail to: EAGLE

the state of

state of Oklahoma call collect

schematic and

to the

be sure and

OBTAIN SERVICE

and efficient service with

quick

require

for

service,

it. If

sending

sending

please

with the unit.

sounder.

ELECTRONICS

P.O. BOX 669
CATOOSA,

Oklahoma,

DIAGRAM &

address above and

give

parts

us the model

do

you

in the unit. We

the Unit back for

enclose a letter

This will assist us in the

OKLAHOMA 74015

call

1-800-331-2301.

PARTS LIST

list

it will be mailed

and serial number

require service,

maybe

repairs.

stating

918-266-5373.

for

your

EAGLE

genuine

call

or

able

If

you

the

depth

to

you

of

your

EAGLE

MODEL SILENT

101

INSTALLATION INSTRUCTIONS

Litho in U.S.A.

• A Division oL

Lowrnnrn

Eleclrnrircs iii

EAGLE

P0.

BOX

ELECTRONICS

669,

CAT.OOSA,

OKLA.

74015

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