Eagle UltraNav Installation and Operation Manual

."'

' .'

•

•.

LITHO IN USA.

•

•

•

988-0106-39A

•

•

UltraNav

INSTALLATION

•

INSTRUCTIONS

EALGIflIE,tJt1

AND OPERATION

TM

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SONAR TABLE OF CONTENTS

INTRODUCTION .

MOUNTING .

POWER CONNECTIONS

TRANSDUCER

KEYBOARD BASICS
DISPLAY

OPERATION
AUTOMATIC

SENSITIVITY

GRAYLINE

RANGE
ZOOM-AUTOMATIC

ZOOM-MANUAL
ALARMS

FISH ALARM

ZONE ALARM

DEPTH ALARM

AUDIO ALARM ON/OFF

MENUS
CHART SPEED
FISH

I.D

CHART CURSOR
FASTRAK
DIGITAL DISPLAYS

DIGITALSIZE

UNITOF MEASURE

BACKUGHTS

SPEAKER VOLUME

DISPLAY CONTRAST
DIGITAL SONAR

NOISE REJECTION

ASP

SURFACE CLARITY
DISPLAY ZONE BAR

DISPLAYZOOM BAR
TRANSDUCERS AND

SIGNAL INTERPRETATION
FISH ARCHES

WATER TEMPERATURE AND THERMOCLINES
SURVEYINGALAKE

CONTROL

CONE ANGLES

(SCC)

BAIT FISH

SONAR TROUBLESHOOTING

HOW TO OBTAIN SERVICE
LORAN SECTION

1

2
4

4
6

7
7

7
9

10

11

12
12
13

14
15

16
17

17
18

19

20
20

21

22

23

23
24

24

25
26

27
28

28
29

30

31

32
34

34
35

38
39

Copyright

All features and

©

1990, Eagle

All

rights

reserved.

specifications subject

Electronics

to

Change

without

notice.

AU screens in this manual are simulated.

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NOTES

INTRODUCTION

UltraNav

The
today.

performance.

at the touch of a button. The

tion
with

high

depth,

boat

(distance

is attached.

Although
menu

system

different features and functions

pressing

Read this manual and take it

unit. It makes a
know when

you!

represents

It rivals other sonar

With its

resolution and detail.

speed,

if the

log)

the UltraNav has

makes it

buttons!

great

you get

one

units

menus,

surface water

optional speed/temperature

many

to use. Above

easy

reference

to the

water,

of the best values in

costing

the UltraNav offers

The UltraNav also

temperature,

features and

on the unit. You can't hurt it

with

should

the

much more

screen shows the underwater

the first few times

you

you

more

your

sportfishing

in features and

easy-to-use

displays

and distance travelled

sensor

functions,

don't be afraid

all,

need it. The

UltraNav can do

digital

(model

the "soft

by

use

you

more

sonar

opera-

world

EST-T)

key"

to

try

your

you

for

MOUNTING

in

Install The UltraNav

ance behind the unit when

in

the bracket base allow

need to

may

panels
enough

cables.

to secure the

room behind the unit

place

a

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convenient

any

it is

wood screw or

of

piece

mounting

plywood

to attach the

location,

for the best

tilted

on the back of thin

hardware. Make certain there is

1

provided

viewing angle.

through-bolt mounting.

and transducer

power

is clear-

there

fiberglass

Holes

You

The smallest hole that will
inch. After the hole is

through

the hole

first,

drilled,

then

pass

pass

pass

one

power

or transducer

the transducer connector

the

power

cable down

plug

up

through

is one

it.

After the cables have
sealing compound.

power
bracket for the

POWER

The UltraNav

best

attach the
may

go
cable

cable

through

transducer cable.

CONNECTIONS

works from a

results,

have

ahead and attach the

is

attach the

power

problems

not

long enough, splice

been

routed,

till the hole with a

Offset the bracket to cover the

the

slot and break out one of the other slots in

NOTCHES

twelve-volt

cable

power

cable to an

with electrical

power

accessory

directly

interference.

cable

directly

#18

gauge

line fuse holder to the red lead as close

sible. For

battery
battery

cable

or
or

in

the event of a short.

example,

power
power

if

have to

you

attach

buss,

one end of the fuse holder

buss. This will

extend the

protect

good

hole. Route the

battery system only.

to

the

battery.

or

power buss,

Therefore,

to the

however

battery.

wire onto it.Attach the in-

to the

power

power

source as

cable to the

directly

both

the unit and the

marine

the

For the

You can

you

it's safer to

lithe

pos-

to the

power

1 7Q°

The

power

positive

the NMEA interface. To use this

cable from the

to the white wire on the

pair's ground
power
autopilot's

feature,

Minimize electrical
possible

generators
power

cable has three

black is

lead,

autopilot

wire and

cable. Do

manual for more instructions. If

cut and

not connect the shield wire to the

tape

noise

sources of

is the

electrical interference. One of the

engine's

and transducer

wires, red,

negative

or

UltraNav's

shield wire to the black wire on the NavGuide's

or

feature,

other marine

the white wire to

by routing

harness. For best

wiring

cables

away

white,

ground.

equipment's

power

prevent

the

power

from the

2

and black. Red is the

The white wire is used for

attach a

cable. Solder the twisted

you're

shielded,

autopilot.

not

twisted

NMEA interface

See

to use this

going

a short.

cable

engine wiring.

from

away

largest

results,

other

noise

keep

pair

your

the

103

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NORTH

REONAL

CHAIN
COORDINATOR OF CHAIN OPERATIONS LOCATION: LORMONSTA KODIAK,
CONTROL SITE LORMONSTA

063I0. 61ATICI C#.

MISTER ST. PAIL

(RAY ATm

YANKEE

ZULU NARROW

LORAN-C CHAIN GR1 9990

PACIFIC

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MANAGER: COMMANDER. 17TH COAST GUARD DISTRICt

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The UltraNav has reverse
the

won't work until

unit

if the

power

the

polarity protection.

wires are hooked

is connected

wiring

Attach the loran module's cable to the
on

the cables

identify

ture sensor's connector.

both the loran and the

See the loran section

module installation.

NOISE

Bilge pumps

from

away

them,

and their

if

possible.

wiring

also radiate

can

VHF radio antennas and cables radiate
levels. It is
from

them,

preventing

important

also. See the sonar

noise

to

keep

problems.

the

power

troubleshooting

TO

AUTOPILOT

up

OR

EQUIPMENTS

No

damage

backwards.

However,

properly.

UltraNav's

power

cable.

optional speed/tempera-

in this manual for loran

so

noise,

AF

energy

and transducer cables

keep

at

high power

section for

will occur to

it

Tags

the cables

away

on

tips

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102

TRANSDUCER CONNECTIONS

See the transducer

transducer

KEYBOARD

The

keyboard

the

left column are used to switch the unit

plotter modes,
pertain

corner of the

installation instructions.

to the basic sonar functions. The menu

WAYPT

SAVE

WAYPT\

RECALL/

owner's manual

has

keys arranged

menu selections. The

plus

keyboard

activates the

333

FT

included with the unit for

in two vertical columns. The

between

keys

first menu

.1-c

4-c

sonar, loran,

in

the

right

in

key

page.

column

the bottom

ec

keys

and

right

in

OFF

SENS

RANGE - This

manual mode.

ZOOM

AUTO - This turns the automatic
ALARM - Activate and

-

Press this

-

The Ultra

key

lets

key

gives you

to

adjust

you

adjust

2X and 4X zoom

the

adjust

the unit's

the

feature off and on.

alarms

sensitivity

when the unit is in the

range

capability

through

4

this

ON

and

key.

Grayline.

with this

key

101

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ICELANDIC LORAN-C CHAIN
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COORDINATOR OF CHAIN OPERATIONS LOCATION LORMONSTA KEFLAVLI(,
CONTRDLSITE:LORMONSTA

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functions.

ON

OFF - The Off
SONAR

sonar
LORAN

PLOTTER

WAYPT SAVE

Press this

-

The ON

-

mode.

-

turns the Ultra

key

turns the Ultra

key

This

key

Press this

-

The

plotter appears

-

Press this

key

switches the

key

WAYPT RECALL - This

Note: The
keys

menu selection arrow
menu

press

Sonar, Loran,

are also used as 'soft

points

feature,

the PLOTTER

not the feature

key

turned off.

to show the

menus and

on.

off.

UltraNav from the

to switch to the

when

save a

to

key

activates the

key

Plotter,

Waypoint

or feature select

keys"

to one

printed

as shown

loran mode.

this

waypoint.

waypoint

of these

on the

below,

the Fish ID feature

gain

loran mode to the

is

key

pressed.

Save and

keys.

the

keys,

For

key.

access to

most

recall menus.

Waypoint

When a

activates the

key

example,

will be

Recall

if

you

AT

0I

FISH-ID

WAYPT

SAVE

WAY

PT"-.

RECALL"

OFFr

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DISPLAY - General

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is first turned on. Menus

on,

used on the

ing

wait ten seconds and the

The menus will also

off

by pressing

screen.

The Metric label at the

the

meters. This also

sitEs,

The ADJ
best

menu. See the

feature.

When the UltraNav is first turned

the one below. The word "AUTO" in the

indicates the automatic feature

"AUTO" indicator means the alarm
bottom

are turned on for

lights

appear

the

press

key adjacent

âpeed

viewing angle. Pressing

to

Display

depth

key adjacent

display

the

and

lights

disappear

key adjacent

top

to the Metric label to

changes

and

knots,

label lets

Display

is

displayed

log

Contrast section for more information on this

approximately

at the same time.

to the

keyboard.

will

after ten

label. It controls the

Light

automatically

to the CLEAR

of the screen works the same

change

the

temperature display

to kilometers on the Ultra Plus.

you adjust

this

immediately

the

key gives you

the

on,

is on.

A

speaker

beneath the AUTO

6

I

ten seconds when the Ultra

If

don't want the

you

seconds,

key

the

display's

display

upper

small note

is enabled. •The

I

To

turn themselves off.

or

you

at the bottom of the

depth

to

contrast for the

the contrast

will

appear

center of the

symbol

the

keep

can turn them

way.

from feet to

degrees

lights.

backlight-

lights on,

Press

Cel-

adjust

similar to

display

next to

digital

indicator.

the

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CONTROL SITE LORMONSTA VOKOTA,

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14TH COASTGUARD

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SONAR

OPERATION

AUTOMATIC
When the UltraNav is

This is indicated

Automatic feature

is

signal

displayed

To turn Automatic

appears, indicating

on, press

the AUTO

the

by

adjusts

in the lower half of the screen

off, simply press

the unit

first turned

the Automatic feature

on,

word "AUTO" at the

the

sensitivity

the AUTO

is in the manual mode.

again.

key

iiUTrP..

3$3FT

----10

.

4_5

and

a

—

of the

top

range

at all times.

key.

is enabled.

screen. The

so the bottom

The left ers "Man"
To turn

Automatic

SENSITIVITY

The

sensitivity

pick up

formation,

echoes.

fish

levels enables

with

noise.

bottom

When

Typically,

signal

the UltraNav is

matically adjusted
more. This

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98 7

key

signals,

you

with

gives

on the UltraNav controls the

A low

sensitivity

and other

to see this

the best

Grayline

in the Automatic

to

it the

a solid

keep

capability

level excludes

information.

target

detail,

sensitivity

it can also clutter the screen

but

level shows

and some surface clutter.

mode,

bottom

signal displayed, plus

to show fish and other detail.

the

of the unit to

ability

much of the bottom in-

High sensitivity

a

sensitivity

good

solid

is auto-

a little

t}33FT

113RAY1

'---ED

However,
decrease the

more
adjust

mode.

To

adjust

menu
Grayline adjust

The
graph.

number above the

use.

To increase the

arrow on the left side of the unit. As

up
bar

You can also see the difference on the

the
To decrease the

arrow. The bar

sensitivity

situations occur

detail,

so an increase in

it is the same

the

appears

sensitivity

The

graph gives

will

graph

sensitivity

is at the desired

where it becomes

sensitivity.

sensitivity, press

on the

menu is

menu has

This

typically happens

sensitivity

whether the unit is in the automatic or manual

the SENIS

left side of the screen. The switch for the

immediately

and

up

a visual indication of the

arrow' also shows the

up

sensitivity

taller and the

grow

is at the desired

sensitivity level, press

graph

level,

and

percentage

level,

level,

beneath it.

down,

press

percentage

release the

release the

necessary

when

is indicated. The

The

key.

arrows, plus

percentage

the

key adjacent

you press

will increase in value.

chart record as it scrolls. When

key.

the

key adjacent

will

decrease.

key.

to increase or

wish to see

you

procedure

sensitivity adjust

vertical bar

a

sensitivity

level. The

of

sensitivity

to the menu's

the

the menu's

key;

to the down

When

the

to

in

When
sound an alert tone.

To turn the menus
bottom left side of the unit.

reach either the

you

off,

maximum or minimum

the

press

key adjacent

8

the

limit,

to the CLEAR

'

speaker

at the

key

will

'

97

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GRAYLINP

NORTHEAST U.S. LORAN-c CHAIN GRI 9960
REGIONAL MANAGERCOMMANOER, ATLANTICAREA.

MANAGER

CHAIN
COORDINATOR OF cHAIN OPERATIONS LOCATION: LORSTA SENECA,

CONTROL SITE: LORSTA SENECA,

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GRAYLINE® lets

"paints"

allows
example,

gray

you

to

a

you

on

targets

tell the difference between

soft, muddy

which is shown with a

causes a wide

strong signal

If

have two

you

without,

distinguish

GRAYLINE® is
between

which

signals

then the

target

weeds from trees

adjustable.

strong

and weak

different GRAYLINE®

on is

power

unit to find the

your

usually adequate

GRAYLINE®

distinguish

that are

or

stronger

weedy

narrow or no

of

with

equal

gray

size,

is the

on the

Since GRAYLINE®

signals, adjusting

also. The level

level,

for most conditions.

setting

q3jFT

a

'r

between

strong

than a

a hard and soft bottom.

bottom

returns a weaker

line.

gray

line.

gray

with

one

stronger signal.

bottom,

that's best for

---20

4-c

Sc

and weak

preset

value. This

signal

A hard bottom

and the other

gray

This

from structure.

or fish

shows the difference

Sensitivity may

chosen

the Ultra

by

Experiment

you.

echoes. It

For

returns a

helps

require

a

at

with

GRAYLINE®—

To

appears

switch label
adjacent

adjust

the

GRAYLINE®,

adjust

in the

appears

to the "SENS GRAY"

menu to GRAYLINE®

arrow to increase the

up

down arrow to decrease it. The

changes
graphical
change

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

96

as the arrow

indication of the GRAYLINE®

on the screen

r

upper

the SENS

press

side of the

left

immediately

label. This

adjust.

gray

are

keys

(both

pressed.

on the

The

key.

display,

beneath it. First

sensitivity

while the GRAYLINE®

press

changes

Now

level. Press the

percentage

the

press

key adjacent

of GRAYLINE®

The bar chart also

level. You can see the

menu and on the chart

9

the

sensitivity

adjacent

key

menu

the

key

in use

gives

record)

to

to the

a
as

you

press

adjacent

the

keys.

After

to the CLEAR

you've

to erase the

key

made the

menu.

adjustment, press

the

key

RANGE

When turned On for the first
bottom

Ranging
changed manually

RANGE - Manual

The UltraNav

mode. Both the lower and

To

mode. If
mode.
left

the

increase the

150,200,300, 500,

press

NOTE:
transducer
You can

-

Automatic

signal

and is

change

corper

key

the

necessary, press

Next,

of

corresponding

range.

the

CLEAR

The

depth capability

installation,

expect

in the tower half of

of the

part

while the unit is in automatic.

gives you

range,

press

the

display.

control over the

first make certain the UltraNav is in the manual

the

RANGE

These are the

to the

The available

900 feet. After the desired

to erase the

key

water and bottom

to read

depths

salt water.

the UltraNav

time,

automatically places

the screen. This is called Auto

automatic function. The

range

the

the AUTO

upper

of the UltraNav

limit are

upper

to switch to the manual

key

Two arrows

key.

range adjust

or lower arrow to decrease or

ranges

range

in excess of 350 feet in both fresh

are

arrows.

dej.ends

conditions,

range

when it's in the manual

adjustable.

appear

arrows: Press

0-10, 20, 40, 60, 100,

is

range

on the

and other factors.

the

cannot be

40'

50'

in the lower

displayed,

and

tilt

:l1

0

18..3FT

t

ADJUE

RiiNG'

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PDF compression, OCR, web-optimization with CVISION's PdfCompressor

S

jcU

95

ZOOM

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Enlarging

or

"zooming"

small detail and fish
zoom

sizes,

adjustment

ZOOM

-

AUTOMATIC

To zoom the
All

targets

The menus shown below

cally.

a

plus

is different

display

on the

display

----20

I}SE3FT

the

signals.

screen zoom

split

picture

isa common

The UltraNav

option.

gives

in the automatic and manual

MODE

in the automatic

are

enlarged

also

mode,

four times

appear.

3?,&FT

0:

method used to show

two different

you

The zoom

operation

modes.

first

press

the ZOOM

normal size automati-

SPUT SCREEN ZOOM

and

key.

To switch

normal,

press

targets

between

the

key

To switch between the
the

splits

the

adjacent

key

into two sections. All

of the ones on the

size

echoes on the
ones on the

exact same echoes on both sides of the

enlarged

the

on the

display

set the zoom as
To turn the Zoom feature

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

94

to the "SPLIT/FULL" label.

left sideof the screen

The echoes that

right.

left side. This feature

at all

times,

desired,

twice their normal size

adjacent

spill

to the "2X14X"

screen

targets

rigjit.

zoom and full screen
on

If

you

are shown at twice the

scroll across the screen are

the left are shown at four times

switch to the 2X zoom

tracks the

when the automatic

the CLEAR

press

press

the RANGE

11

off,

screen.

and four times

label.

zoom, press

The screen

instantly

mode,

size as the

They're simply

bottom,

keeping

feature is on. Once

to erase the menus.

key

key.

the

it on

you've

ZOOM - MANUAL MODE
When

you press

the screen shown below

the 4X zoom
the 2X/4X
the SPLIT/FULL

bottom

signal

the zoom

mode. For a 2X

label. For a

label.

while

it's in the manual mode.

----20

B

'f

4OJUST

cc

I

<2XI

white

key

appears.

zoom,

screen

split

Remember,

the unit is in the manual

The unit is

simply press

zoom, press

the UltraNav won't track the

automatically placed

the

key adjacent

the

key adjacent

1g----D

ec

ADJUST ZOOM

mode,

in

to

to

To

screen similar to the one on

arrows
screen are the ones that
zoom bar. Press the

bar

left side of the screen

automatically

ALARMS
The UltraNav has three

Alarm. It sounds when

echoes is a fish.

the

adjust

appear

or down. As

up

zoom,

on the

clear a few

Another alarm is the Zone

the

press

screen. The echoes on the left side of

keys

you

at the same time.

the Fish l.D. feature determines a

key adjacent

the

appear

adjacent

adjust

seconds

different

right appears.

between the

the zoom

after

types

12

to the ADJUST label. A

A zoom bar and

and the bottom of the

top

to the arrows to move the zoom

the

bar,

The zoom

you've pressed

echoes move on .the

adjust

the last

of alarms. The first is the

Alarm which consists of a

adjust

the

menus wilt

key.

Fish

of

group

93

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

SELECT

ALARM

OF

TYPE

ALARM MENU

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bar.

Any

echo that

appears

alarm is called the Bottom
alarm. This is useful as

inside this bar

Alarm.

an anchor

navigation.

You can also turn

ALARM

FISH

the alarm

speaker

Use the fish alarm for a distinctive
suspended objects

fish alarm

adjacent

feature,

to the

are detected

first

press

the

'FISH" label- The menu

triggers

bottom

the

Only

watch,

audible alarm when

by

ALARM

a shallow water

off

through

the Fish LD.

Now

key.

shown below

the ALARM menu.

feature- To use the

the alarm.

will

signal

alert,

fish or other

the

press

appears.

The last

this

trip"

or for

key

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

92

13

To

turn the fish alarm

label. The screen will clear and return to the chart

fish

a

symbol displays

"FISH" shows
when the alarm sounds.

in

on, press

on

the lower left corner of the screen.

the

the

screen,

key adjacent

to the "TURN ON"

a tone will sound. The word

display.

They

Each time

will flash

To turn the

adjacent
"TURN OFF" label. The

ZONE ALARM

To activate the
the

key

show
The

adjustment

the zone bar shows on the

between the
alarm will sound on

fish alarm

to the "FISH" label. Now

next to the Zone Alarm

on the screen's

top

of

f, again

alarm is now disabled.

Zone.Alarm,

right side,

label

appears

and bottom of this

fish, structure,

'}83FT

çSHAL

the ALARM

press

the

press

first

press

label. The word s "ZONE ALARM"

signifying

on the loft side of the

far

right

side.
bar

bottom

key adjacent

the ALARM

the Zone Alarm is active.

echo that

Any

will

trigger

echoes,

•IkflZ

-

—ctJo

then the

key,

tb the

Next,

key.

display,

appears

the alarm. This

etc.

cN

E
A

L

ISETI

_____

F!J1I

A

R

key

400

press

whereas

300

5D

To

SET SHAL/DEEP label. The SHAL

press

shallower. To

to the down arrow. To

press

adjust

up

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

the

adjust

the

key adajacent

the

key adjacent

the bottom of the zone alarm bar

and down arrows.

of the zone

top

adjust

alarm

to the

top

the

of the bar

top

the bottom of the zone alarm

adjust

to the SET SHALJDEEP label. You can now

first

bar,

letters

arrow to

deeper,

using

14

the

press

appear

move the

in reverse. Now

press

the

keys adjacent

next to the

key

of the bar

top
the

key adjacent

bar,

again

to the

91

Once

you've

menus.

made the

adjustments, press

the CLEAR

key

to erase

the

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To turn

the

DEPTH.

The
trigger

the Zone Alarm

adjacent

key

ALARM

Alarm works

Depth

this alarm. The

off,

"ALARM OFF' label.

to the

off the bottom

Depth

consists of a shallow alarm
sounds a

alarm set

deeper

warning

point.

than the alarm set

shallow water. Use the
as a

drop-off.

To turn the
key adjacent

Depth

to the

tone

The

Alarm

Depth

when the bottom

deep

deep

OEPTk 33FT

return to the Zone

signal only.

Alarm is

and a

actually

deep

Alarm

two

alarm.

The shallow alarm

signal goes

menu,

No other echo

different alarms. It

shallower than the

alarm sounds when the bottom

Use the shallow

point.

alarm to alert

on, press

the ALARM

alarm to warn

to

you

key.

deeper

Next,

Alarm label.

then

press

will

signal goes

you

press

such

the

water,

of

.s

cJ

ALARM

OFF

DEEP

-'%ftJ ALARM

Now

The

and

deep

simply

or the

This

brings you

bottom
alarm

adjustment

the

press

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

90

is shown at the

depth

key adjacent

Shallow Alarm and

to the

top

arrows are beneath

to the

up

of the

display.

the

arrow to increase the

15

Alarm menu.

Deep

The shallow

digital depth.

depth

down arrow to decrease it on the
was

adjusted

the

Shallow Alarm was

in

this

example,

pressed.

so

desired alarm. The shallow alarm

the

key adjacent

to the

arrow on

up

The

The
bottom

you

AUDIO ALARM
When the UltraNav

enabled. This is

alarm

deep

difference is the sound

only

goes

can tell

adjusts

deeper

the sound which alarm

by

ON/OFF

indicated

AUDIO

-z

----10

38,,3FT

-C -C

and

activates

than the

is first turned

C-c

alarm

a note

by

ALARM SYMBOL

exactly

the

on,

alarm makes when the

deep

depth.

This tone is different so

was

triggered.

the audio alarm is

symbol

at the

SELECT

SSI

ri

I

like the shallow alarm.

automatically

of

the screen.

top

TYPE

OF ALARM

To turn the

the

key adjacent

off.

To turn the audio alarm

label that was used to turn the sound off
Sound On."

NOTE:

the

display

off. For

triggered.

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

audio alarm on or

to the 'Turn Alarm

Press the

The words

when the alarm is

example,

corresponding

the word 'ZONE"

off,

press

on,

press

key adjacent

to the alarm in

triggered

the ALARM

Sound Off" label to turn the audio

the ALARM

now reads "Turn Alarm

to this label to turn

even if the

flashes when the zone alarm is

16

key. Next, press

key again.

the sound on.

will

use

still flash on

speaker

is turned

The

89

MENUS

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The UltraNav uses
tions and features

features, allowing you

water conditions.

and

enter another to reach

menu

the

key

simply press
sonar menus accessible

different

menus, depending

if a sonar screen

sonar menu screen.

menu

SONAR MENU - PAGE

key

displays

menus

of the unit. The

to customize the

Although you may

the desired

to select

the

the next menu. If

adjacent

key

is

showing, pressing

If the

the first

extensively

with the menu

1

CHART SPEED
The rate echoes scroll across

is called the chart

first

by

pressing

pressing

the

speed.

the

key adjacent

JUST CHARTSPEED" label.

menu

speed

appears

the screen. Increase

pressing

the

or decrease it

adjacenttothe up

key

by pressing

cent to the down arrow.

of chart

arrow
also

chart

speed

keys

gives

speed.

the screen
chart

record)

After

you've

the

key adjacent

erase the menu.

in use

are

pressed.

a

graphical

can see the

You

on the menu and

(both

as

you press

made the

to the CLEAR

It's

menu

on the left side of

the chart

The

changes

The bar chart

indication

adjustment, press

menu

function,

CLEAR label. There are

to the

on which

screen

plotter

plotter

menu screen.

the screen

adjustable

then

key,

to the "AD-

The chart

speed by

arrow

the

key

adja-

percentage

as the

of the

change

on the

the

keys.

key

to

guide you through

key

unit to

accesses

your particular

many

have to leave one

all

you

key.

mode the unit is in.

the menu

is

showing, pressing

have to do is

you

ever

get

The menu

will show

key

lost

ADJIJST

4

FISH-ID

}33

on

to

FT

the func-

of these

needs

menu and

in a

menu,

eight

shows

key

For

example,

the first

the

. —

TURN

press

.

To
tothe

step

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

88

the

stop

chart, press

"START

STOP" label.

to start the chart

the

key

again.

adjacent

Repeat

this

17

SONAR MENU - PAGE 1
FISH l.D.

The Fish LD. feature

fish. The
clutter,

instances,

symbols

four fish
to

designate

displays
medium fish

The
distinguish

lines,
extending

Fish l.D. feature to
symbols

micro-computer

thermoclines,

remaining targets

on

the screen in

symbol

the relative

a small fish

symbol

micro-computer

between fish

turtles, submerged floats,

outwards from a

on the screen when

identifies

and

sizes:

tiny,

symbol
on a

is

sophisticated,

distinguish

analyses

other

place

size between

larger target,

and other

the unit in both the Fish l.D.

familiar with the Fish l.D.

38.3

FT

feature.

targets

are fish. The Fish LU.

small,

when it thinks a

group

from fish. You

actually,

mode and without to become more

that meet certain

all echoes and

signals

that are

of the actual fish

medium,

and

targets.

eliminates surface

undesirable. In most

echoes. There are

large.

In other

target

etc.

but it can

suspended objects

air

bubbles,

be fooled. It cannot

etc.

Individual tree limbs

of limbs is the hardest

see Fish ID.

may

there are no fish.

conditions

feature

These are

words,

is

a small

such

object

Practice with

as trot-

CHiiRT

.1

as

displays

used

it

a

fish,

for

the

500

20*

40°

OFF

A

When the UltraNav is turned
turned

then

the AUTO

on,

press

also.

To turn the Fish l.D.

the

key adjacent

This turns the Fish 1.0.

key.

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

on, the Fish 1.0. feature is

feature

to the "Turn Fish-ID

off,

press

Off"

feature and automatic off at

18

automatically

the menu

label. Or

press

key,

87

the same time. To turn

menu

label. The

returns. Echoes
surface

computer

Next, press

key.

menu

immediately

will continue

clutter will no

determines are fish will be

longer

the Fish l.D. feature on

the

key adjacent

disappears

to the "Turn Fish-ID.

and the sonar screen

to scroll across the

be

displayed.

Any targets

displayed

again,

screen,

as fish

first

press

however,

micro-

the

symbols.

the

On"

the

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Remember,

the Fish ID. feature

in the manual

UltraNav is in

feature

the Fish

on. If

LD. feature will be turned

mode. If

manual,

you

the

turn automatic

cannot be used when the

turn the

you

micro-computer

off when the Fish 1.0. feature

off also.

Fish l.D. feature

will turn the automatic

UltraNav is

on when the

is

on,

SONAR MENU - PAGE 2
CHART CURSOR

UltraNav has a chart cursor

The
lows

cursor is

extends
right. A depth

to

you

pinpoint atarget's depth.

simply

across the

a horizontal

display

box at the end

ontherightsideshowsthelirie'sdepth.

cursor

the

example

below,

the

that al-

The

line that

from left to

of the line

In

is at

(line)

.1

-H-

r.ptL

it.

ON

30.2 feet.

4

__________

__________

________________

----20

q33FT

0

the

CUR

down

and

down to

the

key

To

display

•

menu
adjacent

SOR ON" label. A screen

one below
Use the

arrow to move the cursor
the

desired

the chart

twice. Now

key

cursor, press

press

to the "TURN CHART

similar to the

appears.

keys adjacent

depth.

to the

up

up

or

To

turn the

menu
adjacent

SOR

OFF" label.

the sonar

NOTE: The Chart Cursor

when FASTRAK is

Zone
activated.

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

86

twice. Now

key

to the

screen

Alarm,

chart cursor

off,

press

press

"TURN CHART CUR-
The UltraNavreturnsto

withoutthe chart cursor.

will not work

when the

or

on,

or Zoom Window

the

the

key

bars are

19

.

e

a0

SONAR
FASTRAK

MENU

-

PAGE 2

This feature
short horizontal

far

right
operate normally.
you a rapid update

under the boat. This makes it

rectly
useful for ice

fishing
moving,

out lines on a
FASTRAK
vertical bar
makes a useful addition

stationary

To turn FASTRAK
key twice,

converts all echoes to

side.

lines on the

The

graph

FASTRAK

display's

continues to

gives

of conditions di-

fishing,

at anchor. Since the unit is

fish

signals

converts the

graph that,

location.

then

press

or when

are

long,

normal chart

graph

with

to

fishing

on,

press

the

key adjacent

you're
drawn

display.

practice,

the

not

to a

at a

menu

to

the "TURN FASTRAK ON" label. To
turn it

off,

repeat

"TURNI FASTRAK OFF" label

instead of the '9URN FASTRAK ON"

label.

the same

steps.

appears

The

SONAR MENU - PAGE 3
SELECT DIGITAL
The UltraNav can

speed,

distance
the

temp
show

tude or TDs. When the UltraNav is
first

played.

turned on or off as

surface water

on

log

screen,

if

sensor is

your

turned

Each

position

on,

the

DISPLAYS

display

the

upper

optional

attached. It can also

only

digital

desired.

the

depth,

temperature,

left

portion

EST-T

speed'

in

latitude/longi-

the

display

depth

is dis-

can be

and

of

20

.4

I

I.

I

4 . b

i

cs

DIGITALS

85

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.1.5.

•. ...........

GULF OF ALASKA

REGIONAL MANAGER: CCMMANCER,
CHAIN MANAGER:

COORDINATOR
CONTROL

CESIG, STATION

MASTER TCK

XRAY

YANKEE SHOAL COVE,

ZULU PORT

LORAN-C CHAIN SRI 7950

CCMMANDER

OF CHAIN OPERATIONS LOCATION:

SITE:

LORNDNSTA KODIAK.

AK

NARROW
CAPE

AK

CLARENCE

I

17TH CCAST GUARD

PACIFIC

AREA ALAMEDA,

AK

COOR- CD/BLL

6310 42.0 N

1424831.0W

572620.2N

152 2211.3W

55 26 20.0 N

1311519.6W

-

ES 14 40,0 N

166 5312.6W

LCRMONSTA

-

CA

DISTRICT, IUNEAU

(Us)

11000!

2004.45

26000

3051.14

44000 AN/FPN-44A

3932.52

AK

AK

KODIAK.

0/MUTTER PWR

AN/FPN-44A

AN/FPN-44A

.

AN!FPN—14A 540

TRANSMIT

ANTENNA

(KW)
540 SLT

625FT

400

MONOPOLE

SL.T

N/A N/A

400

NCM NOTES

ECC
.i.1.D

0.0

.

0.0 I DUAL

J

DUAL
RATE

GM 0090

RATE

0990

SRI

WI

WI

To select

press
press

DIGITAL

of the

one at

Now

desired

the
key adjacent

the

digital displays

the menu
the

key

key adjacent

DISPLAYS"

screen. A screen

right appears.

the

press

display.

temperature

key

For

display

to the

label.

Once

the

ON".

off

Press the
seconds

do

you

temperature

this,

and

You can turn each

individually.

CLEAR

and the menus

NOTE: The "LORAN
sonar screen is off.

SONAR

SELECT

The

digital displays

medium,

the menu

MENU

-

DIGITAL SIZES

or

large.

three

key

"SELECT DIGITAL

SELECT

DIGITAL

4

SLC

menu,

times.

three

Next,

to the "SELECT

menu at the

similar to the

adjacent

example,

"TEMP. IS OFF"

the

read "TEMP. IS

key

This screen does

PAGE 3

can be

To

times. Now
SIZES" menu.

to the

to turn

on,

press

display

IS OFF" means the

change

will show

display

to exit

will

on or

from this menu or wait

automatically

shown in three different

the

press

I

first

top

the

clear.

loran

position display

not turn the loran on

size of the

The screen shown

digital

the

key adjacent

SELECT DIG.

-'4

at

—II i

—4

'

approximately

on the

or off.

-

sizes

display,

small,

first

press

to the

below

appears.

SIZES

N itiS

wr1:t]

j

ten

.4

-•

b.

—

.

4!

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84

21

Now

simply press

you press
are shown

the

the

key adjacent

in

small numbers.

key adjacent

to the "SMALL"

to the desired

label,

label. For

the

digital displays

example,

if

The

large digital

displays
which is different from other menus.

chart
select
chart restores the normal menu

in

information,

digital displays,

SELECT

selection

large. Pressing

placing

and

DIG.

erases the chart and shows the

the menu

the

digital

the

adjust

operation.

SIZES

ri w

I ) tIJ

w

w_

fl!1

key gives only

This menu lets

display

back in the medium

alarm.

depth

SMALL DIGITAL DISPLAY

one menu

you go

Returning

back to

digital

page

size,

to the

SONAR MENU - PAGE 4
SELECT UNITS OF MEASURE

The UltraNav can

water

temperature

miles
This menu switches all

again.

To

change

screen above left

UNITS OF MEASURE" label.

Now

CAL MILES" label. The unit of
equivalent. Repeat

hour or

per

You cannot switch each

the units of

the

press

display

knots,

appears. Next, press

key adjacent

the water

in

degrees

and distance

displays

measure,

the

same

in feet or

depth

Fahrenheit or

to their

display individually.

first

press

The screen at the above

to the

"CHANGE TO

measure will

to switch the units of measure

steps

22

in

(log)

metric

the menu

the

key adjacent

Celsius,

miles or nautical miles.

equivalent

meters,

speed

key

surface

in

and back

fourtimes. The

tà the "SELECT

right appears.

METERS, °C,

change

to the metric

statute

NAUTI-

again.

83

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ol

:T,URN.1

BPiCKLIGHT

ON

4

____

:

,1

.;..:

4

UNITS

MEASURE

ARE IN

FEET

MILES

-

-

CHANGE

METERS

ri:tLES-.

OF

TO

.°C

LABRADOR SEA LORAN-c
REGIONAL MANAGER COMMANDERATLANTIC
CHAIN MANAGER COMMANOER, ATLANTIC AREA. NEWYORK,

COORDINATOR
CONTROL SITE: LORMONSTA ST. ANTHONY,

DEBIG.

P/ABlER FCX

WHISKEY

XMY

STMIJ CA.

NPLD,
CAPE PACE 46463225 110001 AWFPN-45

NR.D.
nIBIOSoC BOOR 1725 20000! . ANIFPII.4S

GREE4LAHO

CHAIN CR1 73O

OF CHAIN OPERATIONS LOCATION: LORMONSTA

HARBOUR 62 22 362 ANfI'PN-64

CANAN 664220,-lW IOOHCBE)

CAMAB 531022.2W 2167.31

451027.0W -3505.09

AREA

NEWFOUNDLAND

CDW0L

(us)

NEWYORK,

OMITtEB

NY

NY

ST. ANTHONY,

PWP

1KW)

003

1500

705 GOSH

NEWFOUNDLAND, CANADA

TRANOMP N

AN1'ONNA

700 PT EC
OA4OYOLE

1350 Fl 0.0
MONOPCLE

M01IOPOLB

SOD NOTES

0.0

DUAL RA'IB WIORSEJO

DUALRATEW/0P15500

DUALRATEW!5R19060

SONAR

MENU

-

PAGE 4

BACKLIGHTS
The UltraNav

these

on,

the "TURN

same

steps.

has internal

the menu

press

BACKLIGHT ON" label.

SONAR MENU-PAGE5
SPEAKER VOLUME
The

speaker

low and

when the unit is first turned

high

To

change

five times. Now
adjacent

volume has two

The

high.

first

it,

press

press

to the "SET

speaker

the

SPEAKER

VOLUME LOW" label.
back to the

above

steps.

volume, repeat

high

for the

lights

four

key

steps

volume

the menu

key

To switch

display

times,

To turn the

-

is

on.

key

the

To

repeat

turn

then

and

keyboard.

the

press

backlights

key adjacent

off,

rSETPEAKEP

DISPLAY

CONTRAST

4!:

to

the

-j

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82

23

P'

SET SFE(.iVEF

SONAR MENU
DISPLAY CONTRAST

The unit's

lustable

conditions. To

to suit different

the menu

menu

shown

the

press

JUST DISPLAY CONTRAST", The

display

contrast

the left side of

increase the
key adjacent

decrease

-

PAGE 5

display

key

contrast is ad-

it,

adjust

five times. The

aboveappears.

key adjacent

arrows

the screen. To

contrast,

to the

up

it, press

the

lighting

first

press

Now

to the "AD-

appear

press

arrow. To

key

on

the

next to

the down arrow. Press the Clear

to erase the

key

proximately

automatically

ten seconds and

clear.

menu,

or wait

they'll

ap-

4

r':

4

S

----20

4-C

.4

LORAN-C

CANADIAN WEST COAST CHAIN
GRI 5990

50'

40°

This

diagram

observed

reflects

data.

PRESET-MEMORY
The UltraNav saves all

display

ory

contrast,

is retained even if

to return the sonar

MENU

the

top

"PRESET SONAR" label. The unit will
with all of the

NOTE: Preset does not affect the loran

loran

any

while a sonar screen is

key

of this

page appears.

original factory settings.

settings, waypoints,

settings

and more in

power

settings

such as

battery backed-up memory.

is disconnected from the unit. If

to the

Now

sensitivity,

factory defaults,

displayed

the

press

reset,

operation,

chart

speed,

first

press

five times. The screen at

key adjacent

return to a sonar screen

nor does it erase

or routes.

24

This mem-

need

you

the

to the

81

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SONAR

MENU

-

PAGE

6

DIGITAL
When the UltraNav

first time,

located

This
tal sonar built into the

only
bottom,

the

bottom,
bottom

The

CANADIN WEST

REONAL MANAGER

CHAIN MANAGER COMMANDER. PACIFIC AREA, ALAMEDA.
COORDINATOR OF CHAIN OPERATIONS LOCATION: LORSTA MIDDLETOWN.

CONTROLSITE:

COAST LORANC CHAIN GRI 509D

COMMANDER. PACIFIC

LCRSTAWILLIAMS

LAKE. BC.

PBEA, ALAMEDA.

CANADA

CA

CA

CA

matic features off

ID. feature.

To turn the

the

it back on

I

00310. 01ATI0!4

MASTER

ORAY

VAM(EE 000AGE.WA 470345.0W

ZISU FOOlHARDY

WILLIAMS
LPJ{0,90.

ONOADA

SHOAl. COVE
AK

BC.CN4AOA

51 6769.0K

122r02.2w

052620.9W

131 1510.7W

1194439.5W

602029.7W

12721 20.0W

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

OD3LL

ODOR.

(95)

. A05FPN44A 400

11200!

7343.00
27020!

152730

40000! MilFFl404 400

¶205.61 I2SHCTS)

PElT

XhOTTER

AWFPN-4M 540 OLE

ANIFFO4.46 1620 ELT -tOO

1KW)

TRMISWT
ANTOINA

525 FT

M40PC1E

025FT
M0!409011

80

7fl

ODD NOTES

+ IT

RATE 09/GAl 7000

0.0 DUAL

DUALAATEW/0R10940

.

0.0 ALEATBAY

-

SONAR MENU - PAGE

FISH l.D. ON

NOISE REJECTION

The UltraNav's noise
is an effective tool in

noise.
undesired

electrical and

such as

systems

ing
even vibration

cases,

marks on the

The
turned

(identified by

noise

SONAR

the

digital

at the

display

left corner

top

comes

the bottom

the last known

display.

digital

key adjacent

over the face

UltraNav

When

will

it

automatically display

depth again.

sonar

digital

again, repeat

In sonar

terms,

signal.

bilge pumps,

and

wiring,

from the

noise can

display.

has a two

the noise

on,

random lines or dots on the

rejection

level

is turned

on for the

depth display

of the screen.

from a

separate digi-

Ultra. It

depth.

depth

the

digital

can be turned

such as auto

also,

sonar off,

"TURN DIGITAL

to the

rejection

combating

noise

It is caused

mechanical sources

engine ignition _________

air bubbles

of the

produce

rejection

to

high.

displays

If it loses the

will flash on

finds the

the

off,

sensitivity,

the

press

the same

7

transducer,

engine.

step.noise

steps.

feature

is

any

by

pass-

In all

unwanted

rejection system.

normal. If

is on

25

TURHIHO

OFF

THE DIGITAL

is

WILL

DISABLE

ALL OF

AUTOMATIC

FEATURES

4

____________

however this also

auto

Menu

six times.

key

SONAR OFF" label.

r

__________________________

you

display), try

_____________

turns all auto-

ranging,and

Now

YET

NOISE

F EJECTIOLI

When the unit

have noise

changing

THE

the Fish

press

To turn

is

problems

the

:1-..

To do

this,

adjacent

first

press

the menu

seven times. Now

key

to the "SET NOISE REJECTION"

label.

press

the

key

The screen at the lower

'SET HIGH" label.

The noise should be
the screen. If

engine,

service

or transducer installation.

center,

.:.:::iJ

The screen will clear and return

cleared from the

it

isn't,

orthe

Eagle factory

NO]$E

REJECTION

'4

right appears.

you may

have a

customerservice

Now

press

display

Check with

as new echoes scroll across

problem

CHART NOISE

'a

I4

the

key adjacent

to the chart screen.

with electrical

local

your

dealer,

department

for

REJECTION

IS SET

I

I

to

the

wiring,

Eagle

help.

LORANC

EAST ASIAN CHAIN

GRI 5970

50°

40°

SONAR
(Advanced

ASP is a

ally
echoes are

with a minimum of screen

since it
adjusting

enabled. To turn

menu shown

to the "Turn Off

with ASP off. To turn ASP

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MENU -PAGE 7-ASP

Signal Processing)

program

monitors the

typically

the

embedded in the

signals

noise,

rejects them,

allows

sensitivity.

ASP

above on the left

ASP'

UltraNav's

from

the receiver, It determines which

allowing target

clutter. This feature is

to

you

When the

off,

press

label.

on

operate

appears.

The unit will

again, repeat

the

UltraNav is first turned

the menu

26

that

computer

echoes to be

especially useful,

at all

boat

key

Now

return to the sonar screen

speeds

seven times.

the

press

the above

continu-

displayed

without

ASP is

on,

The

key adjacent

steps.

79

SQNAR MENU

OFF

SURFACE

CLARITY CONTROL

5CC
The

markings extending

the zero
the surface.

surface

action,
sion,

line can extend

These

clutter and are caused

boat wakes,

and more.

-

PAGE 7-

downwards
many

markings

temperature

FISH 1.0. ________________

-J

H CII SE

-

:PtjEct104.:

________________

•.•:SETHCt4AF1T1

from

feet below ___________________

are called

wave

by

inver

gflJaJa1a

________

FACE

SUF

CLARITY

_______

EASTASIAI'J LORAN-C GRI
REGIONAL MANAGER: PACIFIC AREA, ALAMEDA,
CHAIN MANAGER: COMMANDER 14TH
COORDINATOR OF CHAIN OPERATIONS

CONTROL

SITE:

DEWS. STATION

MASTER

WHISKEY IIOKKAIDO 4244 27-iN 11I AMIWH'45

XRAY KWN4SJU

YANKEE EESASHI

FOHAFJG 2411 WaN AWT1RN'28

KOREA 1292027,30

JAPMI 14a409.2E 4797.66

KOREA

JAPAN ¶2600 56,40 2565,56

5970

LORMONSTAVOKOTA,

00CR,

25 2223.SN

T26322S.7E

262625.94 42F

LOCATION:

JAPAN

CDIELL

lusI

21000/

947.52

CA

COAST GUARD

DISTRICT,

COMMANDER,

XMI'RER

I1NIThN-29

AI4IFPN4S

HONOLULU,

PWR TRANSMIT

IK%R

25 4 FT -1,5

1 6ZSFT

76 400 FT

1000 626 FT

HI

FAR EASTSEGTION,

ANTENNA

MCNDPCLE

MONOPOLE

MDNOPaE

MONOPOLE

JArAN

YOKATA,

NOM
EDO NOTES

USAF MANNEO

•

,0.6 DUAL RK6S WSRI

-1.75 USAFMANNED

0.0 DUAL

MATE P4/SRI"?

997

Surface

Clarity

from the

nearthe surface

the maximum

cally,

example,

be reduced to
There are three

low, medium,
adjustable

To

adjust

Control,

display.

and

on a 0-60 foot

approximately

levels of SOC available

and

and this menu doesn't

the

SOC.

Fish ID. feature is
MENU

key adjacent

seventimes.

key

to the

or SOC reduces

3CC varies the

gradually

that

depth

range

When the

high.

make certain the

then

off,

Now

"SET CHART

SURFACE CLARITY" label.

press

the

key adjacent

to the

3CC level. The unit will return

chart, using

the level of 3CC

you

or eliminates undesired

sensitivity

increasing

of the receiver, decreasing

ft as the

3CC affects is 75%

with maximum

feet.

45

SCC.

when the Fish

feature

the

shown on

press

Fish 1.0.

the

pressthe

Finally,

desired

to the

chose.

increases.

range

of the

surface

1.0. feature is

is

on,

display.

SCC IS

4

SELECT

signals

Typi-

range.

clutter would

the 5CC

is not

it

For

off:

—

7.

I.,..

I..

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78

27

MENU -PAGE

8

DISPLAY

The bar

mally

It can

desired. To turn the

on,

Now

"DISPLAY ZONE BAR"
menu screen
alarm bar

the screen.

alarm on if
peatthese

bar off.

zone

ZONE BAR

used in the zone alarm nor-

disappears

be turned on

the

press

press

displays

Turning

alarm off.

afterthe alarm is set.

continuously,

zone alarm bar

menu

key eight

the

key

adjacent

disappears

on the

Thiswill alsoturnthe zone

it wasn't

stepstoturn

already

the zone alarm

it off also turns the

times.

to the

label. The

and the zone

side of

right

on. Re-

if

MENU - PAGE 8
DISPLAY ZOOM BAR

When the tiltraNav is in
mode,

on
make certain the
manual

key eight
adjacent

label. Note:

shows in the

the Zoom Bar can

continuously.

then

mode,

times. Now

the

to

"Display

The zoom bar

Split

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the manual

be turned

To do

Ultra is in the

press

Zoom mode.

first

so,

the MENU

the

press

Zoom Bar"

only

key

28

ZOOFi BAR

.1 ______I'

CLEAR

ii

77

• TRANSDUCER

CONE ANGLES

CANADIAN EAST COAST LORAN-C

REGIONAL MANAGER COMMANDERATLANTIC

MANAGER COMMANDER

CHAIN
COORDINATOR

CONTROL SITE:

[!

bt'StER

(RAY

ZILIJ I'OXHAJIBOUR

OF CHAIN OPERATIONS

NEWFOUNDLAND

LORMONSTA ST. ANThONY,

srA111

CARBOU hE

NN4TUCI(E1 4116 llSI

CAPE RACE

NRD CAKAIIA

NR.DCMaDA

CHAIN CR1 5930

ATLANTIC AREA

CANADA

69 5539.1W

LOCATION

The sound waves

cone

shaped

The

angle

offers

Eagle
cone

angle.

cone

angle.

ideal for
cone

angle

feet of
The 8

degree

The 20

water,
ment,

(300

is more

angle

smaller

beam. This looks

between

a choice of transducers

The transducer

Typically,

operating

allows

water the 20

transducer covers

degree

the 8

area,

transducer is almost

degree mostly

feet - fresh

desirable. Since

can

it

from the transducer

much like the beam

the outside

wide cone

in shallow to

to see

you

degree

edges

supplied

angle

medium water

more of theunderwater

covers an area

cone

only

always

water. In a

in salt

100 feet - salt

water,

the sound

penetrate

to much

spread

out

of the cone

with either an

with the

Ultra has a 20

transducers

depths.

about six feet across.

about a two

the best

deep

water)

energy

deeper depths.

into the water

from a

is the cone

8 or 20

flashlight.

angle.

degree

degree

(20 degrees)

The 20

world.

degree

In 15

foot circle.

to use in

fresh

water environ-

the narrow cone

concentrated

i'

50'

in a

are

in a

100'

150'

200'

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

76

• 29

Both 8
ings,

model. This is because

ber,
rest of the

degree

even

the

and

though

shallow

signal

20

degree

the bottom

of the

edge

tells

you

signal

are

you

signal

whether

transducers

seeing

shows
you

give

is much wider on the

more of the bottom. Remem-

you

are over

accurate bottom read-

20

degree

the true

depth.

rocks, mud,

The

etc.

SIGNAL

Your
passing.

fairly
down,

absorbs the
sensitivity

Big

bottom level

height.

line

A

steep slope

returned from a

INTERPRETATION

UtraNav

wide

then

gives

A

bottom of firm

signal.

it means that

sound wave and returns a weak

to see a

rocks or

extending

stumps

signal.

As

you pass

DIGITAL
BOTFOM

DEPTH\

an accurate

If

the automatic mode is off and the

you

better bottom

on a

smooth bottom send back

The

height

over a

above

the bottom

returns a wide

underwater cliff are

high

picture

sand,

gravel, shell,

have moved over a mud bottom. Mud

signal.

of the

post,

signal.

signal,

of the bottom

signal depends

it should be

the

steeper

usually

333FT

4-:

that

or hard

signal.

clearly

clay

signal

Turn

signals

on the

visible as a short

the wider.

the widest of all.

boat is

your

returns a

narrows

the

up

above the

target's

Signals

WAYPT

SAVE

WAYPTN

RECALL/

;. :r.c

-

":.

OIF ON

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

30

75

ARCHES

FISH
Fish arches

The distance
below.

are created

to a fish

When the center of

shorter as shown
increases

again

as shown

when the cone

when the cone

the cone strikes

As the cone

"B".

in "C".

of sound

passes

over a fish.

first strikes it is shown

the

leaves the

fish,

fish,

distance is

the

the

as "A"

distance

CENTRAL PACIFIC LORAN-C CHAIN CR14900
REGIONAL MANAGER

CHAIN MANAGER
COORDINATOR OF CHAIN

CONTROL SITE: OMSTA KANEOHE,

DESIG.

MSTER

IXMV

VAM(EE KURE ISLAND

COMMANOER. PACIFIC AREA. ALAMEDA,

14TH COAST GUARD DISTRICt HONOLULU,

OPERATIONS LOCATION: OMSTA KANEOHE,

HI

STATIOl

JOwsr'4

IGLANOHI
UPCLIJ OW

H'

HI

BOATS

CA

HI

HI

DIRECTION

OF TRAVEL

adln-

.1

1

A

is

When

the Fish

and

shape

example,

displayed

cone diameter and the

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

74 31

I.D. mode

of the fish arch

if the cone

passes

on the UltraNlav

resolution limitations

the

off,

depth

due to the cone

over a

may

fish in shallow

not arch

at all. This is due

water will affect the

of the

angle

water,

of the

display.

B

diameter.

the

signal

to the narrow

size

For

small fish

Very

a

partial arch,

fish

Large

arch.

Because of water

will

probably

or

a

arch,

thermoclines, etc.,

to

enough

fish arches.

get

will

not arch at all. Medium sized fish will

shape

similar to an arch if

but turn the

conditions,

the

sensitivity

they're

sensitivity up

sometimes cannot be increased

in

such as

deeper

heavy

in

deep

water to see the

surface

show

water.

clutter,

3. If

you're using

and

building,

(most

or

(NOTE:

purposes

the loran on

important) power

under a metal

The

se units are

and

carport, shed,

generally

land, keep

lines. The

designed

away

loran will not work inside a

etc.

for

work best on the

from

trees, buildings,

marine

(boating)

water.)

One of the best
segment

segment,

of the water. For

the better the screen

this on the UltraNav is

Bottom Track mode to

detail. For the best

without

getting

too much

this method should work to

If

see fish

you

fish

symbols

WATER
Water

temperature

signals

when the Fish I.D.

TEMPERATURE AND THERMOCLINES

ways

to

fish

get

example,

resolution will be. The easiest

with the Bottom Track feature. Use the 2x or 4x

turn

the

the

expand

results,

noisepn

display

when the unit is in

feature is

has

an.

important-if

the activities of all fish. Fish are

always

the

temperature

colder water slows

about a fourth as much
Most fish don't

narrow limits.
helps

identify

various

Bass and other

too

cold

species.

during

tolerance than

stay. Schooling
provides

here.

this

spawn

The surface

the desired surface water

fish

the summer. While some fish have a wider

others,

fish

temperature.

of

the

suritunding

down their metabolism. At this

food as

unless the water

Trout can't
eventually

they

temperature

$urvive

die out when stocked in lakes

each has a certain

suspended

We assume

arches is to

expand

from 45 to 60 feet. The

echoes,

sensitivity up

the

screen. In medium to

fish

arches.

making

the manual

on,

try increasing

not

cdntrolling-influerice upon

cold blooded and their bodies are

water.

consume in the

temperature

meter built into the

spawning temperatures

in

streams that

or "zoom" a

smaller the

way

it easier to see

as

mode,

as

high

deep water,

but don't

possible

the sensitiv-

During

summer.

the

time, they

is within rather

Ultra Plus

too warm.

get

to do

winter,

need

that remain

temperature

within

which it tries to

most comfortable

over

range

water lie at the level

deep

are the

they

get

for

that

4.

If

you're having

have a

may

that is

causing

then

try

doesn't

look for other

INTERFERENCE SOURCES or BAD

initializing

work,

trouble with the

of

piece

gear

interference. First turn

unit

such as a

the unit. Enter the

then
sources of interference.

the GRI. If the unit

try

Land Sources:

1.

Military

2.

Hydro-electric plants.

3.

High voltage power

4.

Storms. A storm

with the

5.

Mountains, trees,

in an

Boat

1. Boat
also be

2. Power cable

Route

3. Bad

open

4.

Fluorescent

installations.

signals,

open

Sources:

engine.

required.

power

!

antenna

on

area

(High power

lines. These radiate

between

even if

buildings.

area.

Resistor

routed to fuse

cable

placement.

the

boat,

lights.

(Dams)

and the

you

it's

many

These reflect the

spark

plugs help,

panel

directly

to the

The antenna should

from other

away

locking

radio,

initial

RECEPTION

transmitters in the loran

miles

instead of

battery.

on to the

bilge pump,

everything

position

still doesn't lock

(see

below)

noise at

loran station can
away.

signals.

alternator

directly

be

antennas or structure.

stations, you

or

in the boat

first. If

levels.

high

Try

noise filter

to

battery.

placed

engine

off,

that

then

on,

band.)

interfere

to

stay

may

in an

32

73

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

UNITS

MEASURE

..t1A1Jt;.:

"I

CHAhi'3 TO

r

MILES

OF

IN

FiiL•ES

C F S

RN

AND

Simply press
"CHANGE TO MILES

label and the UltraNav

the last used loran
the new units of measure.

To switch back to nautical

knots, repeat

will now read 'CHANGE

menu
NAUT. MILES AND KNOTS".

the

key adjacent

switch the units of

the

key adjacent

AND MPH"

will return to

screen, showing

the above

to that menu

measure.

mites and

steps.

to the

The

TO
Press

to

SURFACE

ABSORBS HEAT.

FROM

EPILIMNION

LAYER

THE SUN

830

78°

770

760

BACKLJGI-ITS

T

r SELECT

TheUltraNav's
are

backlighted

the

backlights

MENU

adjacent
label.

key,

Now

three times.

appears.
adjacent
ON/OFF"

will turn on. If

they

will turn them

LORAN TROUBLESHOOTING

1. You

2. For best

must have an 8' antenna.

antenna

preferably

will be

boat
using

of the

keyboard

for

on or

then

press

to the "CHANGE SETUP"

the MENU

press

The screen at left

Simply press

to the "TURN BACKLIGHT

label. lithe

off.

should be

results,

the main

grounded,

an isolated

battery.

The loran will work better if it's

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

and

display

use. To turn

night

off,

lights

they

higher

wire the

battery,

the

press

the

key

key

the

key

are

were

on,

than

power

engine's cranking

since the lower unit

wire a

off,

this

Preferably,

anything

cable

grounding plate

72

'1

LEAP

directly

battery.

UNITS

F1EASURE,

'I________

the entire

else on the boat.

to the

This assures

is in the water.

to the

grounded

OF

________

of the

length

battery,

If

ground

to water.

b.

the

you're

side

The

temperature

bottom.

warm and cool
thickness of the thermocline

deep

are
active.

game

The UttraNav can detect
ity

Layers

lakes

important

Many

will

fish

will

probably

pf water in the

of different

of water is called

layer

there

to

times bait

suspend

be two or more at

may

fishermen because

have to be turned

fish wilt be above

in or

this invisible

-a?

c.

lake is seldom constant

temperatures

can

vary

THE RMOCLINE

'MOST pRoDucTivE

ZONE FOR

form,

a thermocline. The

the season or time

with

different

are areas where fish

they

the thermocline while

belowit.

just

in the

layer

see it.

to

up

33

FISHING

and the

depths.

but the

water,

68°

56°

500

470

from

junction

depth

of

Thermoclines

to

top

of a

and

In

day.

are

larger

sensitiv-

SURVEYING A LAKE

The most successful

after

day
that

produce

where,

season. And

any

throughout

other factors.
With the

areas where fish are
The most efficient

survey
and indicate the

As

you go

of bottom. It will also

type

a few marker

Keep

the Ultra indicates a school of

thus

marked,

the

right spot.

lake. Unless

not be able to find it

and

day

and at what

the

Ultra,

it with

your

about

you
you

anglers

after

year

fish

consistently.

depth,
they

year depending

anyone

likely

way

UltraNav.

promising spots

your survey, your

buoys

can make

This is

mark the school of fish

again.

year. Eventually, they

they

realize that

can eliminate

to be. Even if it's the first

to become

reveal

in the

your

essential when

on

any

They

can
on water

acquainted

Start with a

in

suspended

boat,

throw the

fish,

turn and come back to fish in

of water are those who fish

body

learn the hot

discover

expect

guesswork

relation to landmarks on shore.

UltraNav will tell

to find the fish

these

level,

map

ready

you're

when

through experience

productive

temperature,

and concentrate on the

time

with a

body

of the

you

fish.

to toss overboard. When

out. With the school

buoy

far from shore on a

you're

they

areas

on the

of water is

if

lake,

the

over

it,

spots

want at

change

and

food,

lakef

possible,

and

depth

exactly

you may

it

to

big

Once the desired values are
"ENTER"

using
see if ASF's are in use. The letters "ASF"
corner

indicator.

label. The UltraNav will return

the corrections

of the

screen,

you

immediately

entered,

entered. Switch to

INDICATOR

press

to the last used loran

below the

ASF

AbJUST TO

OFFSETS

S

a

a

SELECT UNIT OF

ENT.

MEASURE

the

key adjacent

the

position

appear

in the

automatic/manual mode

to the

screen,

screen to

left

upper

AUTO SRI :?98C

'11SF

Posi

TLOtI

Pr

N 24°33.37

U131° 43.6W

FIX IS GOOD(S

135°

23.8 KM

56.8

BAIT FISH

The

importance

sized.

Bait fish are the
shad. Bait fish can also be the

bluegill,

Most bait fish concentrate within five feet of the surface where
promotes

of

feature
Usually,

bait fish.

They

and bass.

fishing

off,

is to use the UltraNav to find the bait fish first. With the Fish ID

game

of bait

are the

the

growth

A

school of bait fish will look like a "cloud" on the

fish will be

fish to successful

principle

plankton feeding forage

of the

food of all

young

plankton

nearby,

game

of

on which

often

directly

fishing

game fish,

can't be

fish in most waters.

such as minnows and

fish,

such as

feed. One method

they

beneath the school of

over-empha-

crappies,

sunlight

display.

The UltraNav can
speed

in knots or miles

4 .

__________________

.

display

distance

hour. When the UltraNav is turned on for

per

in

nautical or statute miles

the.
nautical miles and

To
the MENU

displayed,

to the

I

press
screen

Now

"SELECT UNITS OF MEASURE"
label. The screen at the

next

first

very

change

the

key

then

"CHANGE SETUP" label. Now

the MENU

shown at left

the

press

page

appears.

distance is in

time,

speed

units of
while a loran screen is

press

key

key adjacent

is inknots.

measure,

the

key adjacent

three times. The

appears.

to the

top

and

press

of the

ARF1OR

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

34 71

Now enter the

enter a zero at the

degrees.

number is entered.

exact

The screen below

latitude/longitude

beginning

of the

right appears

for

your position.

longitude

after the last

Remember to

if it's less than 100

longitude

IMPORTANT

SERVICE

INFORMATION!

If

ASF

LAT'LON

C

H———0

--.-w

H32°

U82°

ASF

LAT'

LON

18.07

5th33

C

-a

C

4

r Li rr r r.

rLAR

If

you're

adjacent

screen is

traNav will return to the last used loran screen,

offset

TU OFFSET

To

offset

to the "ENTER

label on the ASF menu. The
shown at

The offset

seconds

in

to the

the TD offset. Press the

to the
or the down

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

east of

to the EAST/WEST

correct,

entered.

you

change

the ASF

method,

right appears.

or correction in micro-

is shown for each

the chain.

up
up

Press the

or down arrows to
arrrow to increase the

arrow to decrease it.

Greenwich, England (east longitude),

press

label.

the

key adjacent

Otherwise,

if

everything

to the ENTER label.

using

ADJUST

ID

the

using

the

press

TD CORRECTION"

adjacent

key

menu ______

secondary

key adjacent

change

key adjacent

value,

70

OFFSETS

\bJ. 0.00.

_____________

_____

a_

C.II icr

press

the

position

ENTER:;

_________

the

key

on the

The UI-

TO

unit is not

your

troubleshooting
tomerservice

the How To Obtain

SONAR

Unit won't turn

1. Check the

2. Make certain the

to the

positive

3. check the fuse.

Measurethe

4.

11 volts. If it

on the temiinals are

Unit

freezes,

1. Electrical noise from the boat's motor,

interfering

from other electrical

cable

directly

2.

Inspect

3. Check

securely plugged

Weak bottom

1. Make certain transducer

transducer.

Its effectiveness. If the transducer

shooting through only
hull. Do NOT use RTV silicone

working,

section before

department.

TROUBLESHOOTING

on:

power

battery

batteryvoltage

the

isn't,

locks

with the sonar unit.

to the

the transducer cable for breaks, cuts,

both the transducer and

echo, digItal readings

Oil, dirt,

or if

Service section on

cable's connection
power

terminal,

wiring

corroded,

or

up,

wiring

battery

to the unit.

in

andfuel

one

need technical

you

contacting

It

maysave you

page

at the unit. Also check

is wired

cable

to

black

atthe unit's

tothe

or the

operates

Re-routing

on the

instead

is

pointing straight

can cause afilmtoform onthetransducer, reducing

layerof

negative

unit is

defective,

battery

erratIcally:

boat

may help.

of

through

power

erratIc,

is mounted inside

fiberglass

rubber adhesive or Marinetex".

help, please

service center or the

a

thetrouble

38

properly.

powerconnector.

trolling
the

power

connectors. Make

and that it is

of

if

need service.

you

The

or

ground.

the

batteryterminals

needs

charging.

motor,

and

Route the

a fuse block

or

pinched

or no fish

down.

35

use the

returning yourunit.

red wire connects

It should be at least

or an

accessory may

transducer cables

sonar unit's

or

wires.

signals:

Clean the face

the

hull,

securely

following

factory

the

wiring.

orwiring

ignition

certain both are

switch

be sure it is

bondedto the

cus-

See

be

away

power

of the

Weak bottom

2. Electrical noisefromthe boat's

the sonar to
This can cause the unit to eliminate

from the

3. The water

sonar can't find the bottom

flash

continuously.

are in. If this

you

to a realistic

range

move into shallower

you

4. Check the
also

drops, reducing

Bottom echo
bottom echo while boat Is

1, The transducer

echo,

automatically

display.

may

happens, place

one,

battery voltage.

disappears

digital readings erratic,

motorcan interfere with the sonar. This causes

increase its

weakersignals

be

deeper

It

may change

than

while it's in the automatic

signal

the unit in the manUal

(forexample,

water,

a bottom

the

If the

its

may

to find the

ability

at

hIgh speeds

moving -

be in

turbulent water. It must be mounted in a smooth

flow of water in order for the sonar to

water
other

disrupt

targets.

the sonar

The technical term for

signals, interfering

or no

fish,

Discrimination or noise

such as fish or even structure

the sonar's

to limits far

range

0-100

feet)

signal

voltage drops,

bottom or

or erratic

work at all boat

with its

this is Cavitation'.

to find the

ability

and increase the

should

the unit's transmitter

targets.

digital reading

speeds.

ability

signals (cont.):

rejection

mode,

greaterthan

then

mode,

appear.

feature.

bottom. If the

the

digital

the water

change

sensitivity.

power

or weak

Air bubbles In the

to find the bottom or

will
the

As

ASF

corrections entered

in use at the time

from the
tions

matically
latitude/longitude position

apply

Remember,

area,

not be usable if

may

changes

the

ASF correction to the stations in use

the ASF will have to

To

change

displayed.

label. Press

adlacent

appears.
latitude/longitude

cally

the

Now,

to the "ADJUST ASF" label. The

This menu lets

turns the ASF feature on.

and location

the ASF correction

stations. This

if

you

change

be re-entered.

first

ASF,

the

press

the MENU

correction.

IMPORTANTI

the user are

by

corrected, If

being

not be valid. ASF

may

you change stations,

especially

to

change

stations,

press

key adjacent

one more

key

you change

Entering

the

ASF. The

especially

MENU

to the

time,

the ASF

the

for

good only

the stations

travel

you

away

correc-

or if

the unit auto-

holds true if

UltraNav

-

not all of them.

if

you change GRI's,

while

key

a loran screen is

you

will

enter a

only

"CHANGE SETUP"

then

screen shown beloW

using

ASF correction automati-

the

press

TD offsets or

key

2. Electrical noisefromthe boat's motorcan

the

sonar to

This can cause the unit to eliminate

from the

and transducer cables

No fish arches when the Fish ID

1. Make certain transducer is
problem

manual for more

2. The

arch,
until it leaves, If the

when it is in the center of the

3. Use the Zoom

in on a small
better luck
This

enlarges

automatically

display. Try using resistorspark plugs

if a

partial

information.

sensitivity may

it has to be able to receive

feature. It is much easierto

range

fish arches with a 30 to

seeing

the

targets, allowing

Increase its

away

arch is

displayed.

not be

sensitivity

of water

weakersignals

from other

feature Is off:

pointing

high enough.

the fish's echo from the time it enters the cone

is not

cone.

than a

large

the

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

interfere with the sonar. This causes

Discrimination or noise

such as fish or even structure

or

electrical

straight

See the Fish Arch section in

high enough,

one. For

60 foot

display

36

routing

wiring

down. This is the most

In

orderforthe unit to

the unit

fish arches when

display

example, you

than a 0 to 60 foot

range

to show much more detail.

rejection

the sonar unit's

on the boat.

displays

will have

feature.

power

common

your owner's,

a fish

display

the fish

only

zoomed

muth

range.

Latitude/Longitude
Use the

latitude/longitude position

the

latIlong

display

is

slightly

your known, precise
displayed position

margin,

may

example, suppose your

longitude

the UltraNav

20.

the

Alternate/Primary

need to be

is

38-25-40/81-34-10,

displays

Simply

enter

ASF Correction

ASF correction if the _____________________

shown on

different than

position. (If

is off

switched.)

your

a

by

large

feature

For

actual

tatitude/

38-24-30/81-35-

actual

position,

and the lJltraNav will handle the

To

change

must be in the location

cent to the "ENTER

the

top

the

of the

ASF

using

LAT/LONG CORRECTION"

next

page appears.

you

the

latitude/longitude correction,

are

__________________

the

but

--TO k

LAT

/LQN

a

ri ',..n

rest. ________

MORE'

you

changing. Next,

press

the

key adja-

label. The screen at

69

first

NMEA
The UltraNav can

according

formats.

off
the

To select the

MENU

displayed.

cent to the 'CHANGE

Next,
Finally, press

The screen shown

Simply
return to the last

wire.

INTERFACE

send data out

to NMEA 0180010183

The NMEA

output

when the UltraNav is turned on for

first time. _____________________

very

key

press

SELECT

NMEA

while a loran screen is

Now

the

the

NMEA OUTPUT" label. _______

output, press

press

MENU

key adjacent

below

a

press

(See

key adjacent

loran screen and

Power Connections section for

the

is turned

the

key adja

SETUP" label.

two times.

key

to the

appears.

to the desired

the

output

S

____________________

4

_____________________

4

output.

data

ASF Correction
Loran

signals

lakes, mountains,

different
factor,

or ASF.

However,
between the chart and the real

are affected

ways.

ASF's

and cities affect

This effect is called

It's

usually

from

vary

There can also b a difference

displayed by

the

loran,

due to

distorted from their theoretical

shifted,

actual

the loran shows a TD or

position.

terrain

by

the

the

they

signal

and

the additional

factored in when a loran chart

to

place

world.

in

your

ASF. In this

position.

latitude/longitude

so there can be differences

place,

actual

case,

Since the measured

The UltraNav has an correction feature that lets
This forces the loran to use a new ASF instead

in its

memory.

entering your

You can shift the ASF

actual

latitude/longitude position.

changing

by

I

OUTPUT

IS

OFF

Select

CIJT

HMEn 0183

1

The NavGuide will

on the white serial data

wiring instructiops.)

travel over. Plains,

each affect

they

secondary phase

position

and the

the loran

that is not the

you change

of the one that

the TD offset

is made.

signals

it in

one

TD's are

the ASF.

resides

or

are

by

boat must be

4. The
is

motionless,

lines.

fish

moving

stay

at aslow

in the

cone, showing

ELECTRICAL NOISE

A

major

sonar's

completely

at all.

or not

To eliminate or minimize

cause.
electrical

unit does NOT

turn on

off,

display.
effect on the

sonardisplayfor

VHF radio

turned

and

ASP,

board,

noise,
seconds after the unit is turned

If

find

you

or

radio,

power

interference.
certain to

unit's

powercable

It no noise

certain
Increase the RPM

the

problem

wiring. Try using

power
the

battery helps

supplied

When no noise
noise source is

experience
water,
will be the location and/or

must be

Read

of sonar

cause

display

cover the screen with

With the boat at rest in the

equipment

have ASP

your

Now turn

sonar's

and transmit.

theireffect onthe

on,

can't turn it

you

one at a

the ASP feature

since

noise interference from

to isolate the

try

cable and

VHF radio antenna cables radiate

keep

displays

everything except

could

cable

away

with the unit when

make

orwhen the boat is at rest. In

placed

transducer owners manual for the

your

problems

as random

sonar unit. There

on each

noise. if no noise

time,

transducer cable

patterns

the effects

on the boat off.

(Advanced

piece

display. Forexample,

Keep

sonardisplay

off,

then turn on

problem.

the sonar's wires

directlytothe

on the sonar unit

the sonar unit is turned

with the

be one of three

resistorsparkplugs,

from

eliminate

appears

probably

hasty

a location that has a smooth

in

gearshift

engine wiring. Again,

noise

wiring

on the sonar unit

cavitation.

sonar installations which function

angle

trolling speed

is electrical noise. This

to seefish arches. If the

onthe

display

usually appears

of dots or lines. In severe cases,

black

of electrical

water,

Make certain the

of electrical

is

doing

first turn on each

the sonar unit You will have to

starts

on.

an electrical

away

batteryto

or cause the unit

dots,

first

noise,

the first

Signal Processing),
should be a

present,

this until all electrical

eliminating

You

away

from It. You

from electrical

thing you

engine

steady

equipment

turn on the

turn the

noted,

piece

Instrument, trolling

can

usually

from the

isolate

on the boat

bilge pump

pump

then turned

of electrical

noise fromthe

re-route the

wiring

noise when

may

itfrom

need to

otherwiring

equipment,

oft

spark

If noise

plugs,

appears

alternator,

or

the

routing

certain to use the in-line fuse

Make

cable to the

after all of the above

or

the cause

flow of water at all

mounting position.

all

cases,

novices

best

in neutral.

things;

alternatorf liters,

problems.

the

power

Many

nearly

transducer. The face of the transducer

of the

as

straight

try

should

is off,

if

or

bottom

off,

equipment

off. If

that is

transmitting,

then start the

routing

powercable

battery.

persons

perfectly

horizontal

operate

to determine the

do is turn all

also. If

can turn ASP

you

signal

and viewthe

and

then turn on the

has been

your

equipment

look

quickly

display

motor,

sonar unit's
causing

route the sonar

on the boat.

then

on the

ortachometer

the sonar

tests,

with limited

in shallow

of the malfunction

boat

boat

on the

it can

erraticly,

your

on the

view the

unit has

on

for

a few

pump,

the

so be

make

engine.

display,

unit's

directlyto

the

then

speeds.

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68

37

How to Obtain Service

ARRIVAL ALARM

We

back

genuine
authorized

will

help you

Customer Service Center.
Service Center are
surface carrier at no

investment in

your

Eagle replacement parts.

Service Center nearest

Eagle

find the closest

your

charge.

quality products

repairfacility.

Transportation expenses

responsability.

Factory Repair

If

unit needs

your

use

the

following

EAGLE ELECTRONICS
Att: Service

12000 E

Tulsa,
You

Customer Service
technician

returning your

For the

When

do the

1. Use the

shipping your product.

2.

Always

For

describing

address,

IMPORTANT: Be sure to include

product

Department

Dr

Skelly

OK

74128-2486

can call or write to an authorized

be able to solve the

may

unit.

Eagle factory

sending a product

following:

original

insure the

proper testing, repair,

the

and a

if it is still in

and

repair,

address:

Department

box and filler material the

problem.

daytime

you

customer service

to the

factory

parcel against damage

and

Be

telephone

warranty.

with

If

need service or

you

you.

If desired

The

wish to write or send a

Eagle

before

sending your

problem

service,

sure to include

and save

department,

or a service

send a brief note with the

number.

of

proof

quick, expert

The enclosed Service Center List

you

to us or to the Authorized

product

or

will

Service Center or the

you

call 1-918-234-1452.

center,

product

loss

durlhg shipment.

your

purchase

service and

repairs,

can contactthe

be

product

unit in for

the inconvenience of

we recommend

was

name,

when

contact the

returned

to the

packed

return

sending

Factory

to

you by

factory,

Factory

rppair.

in when

product

shipping

the

A

you

The arrival alarm sounds a tone when
alarm's radius of a
come with .1 nautical miles of a

is .1 nautical mile.

waypoint.

For

example,

waypoint

a A r r iv a. 1

Radius

a C.D.L

Linit

<MUTE

To

adjust

plotter

Press the

increase the

the

C.D.I. ALARM
The C.D.I.

amount as the alarm

nautical
nautical

on

To

is

key

screen is

key adjacent

miles,
miles. The C.D.I. alarm

the

Steering

adjust

displayed.

adjacent

ALARM

the

arrival

alarm, press

displayed.

key adjacent

radius,

alarm sounds when

the C.D.I.

to the

the down arrow to decrease it or turn

to the EXIT

setting.

then the alarm will sound if

Screen.

alarm,

The screen shown

up

the down arrow to decrease it or turn
the C.D.I. indicator's limits are

key

adjacent

to the EXIT label to return to

I

the ALARM

The screen shown above left

to the

arrow on the

arrow on the arrival alarm's menu to

up

label to return to the loran screen.

are off course

you

For

example,

adjust

the

press

ALARM.key

above left

C.D.l.'s alarm menu to increase

preset

your position

is within the

the alarm will Sound if

if

the arrival alarm's

Arrival

S

setting

Radius

a C D. I.

Linit

MUTE ALARM

C

while a loran or

key

appears.

off.

it

the same

by

if the alarm

you're

also

changes

appears.

setting

off course

the O.D.l.

while a loran screen

Now

it off. If the alarm is turned

to .1

nautical mile. Press the

the loran screen.

is .1

.1

by

press

you

I

Press

range

the

it,

off,

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38

67

each

waypoint,

waypoint
route.

the UltraNav will

on the list. This continues until

automatically

switch to the

you've

next

travelled the entire

Canceling

To

stop

then

adjacent
sequencing through

show

Erasing
To

erase a route,

the "ROUTES" label. Now

ROUTE" label. The screen shown below

The asterisk shown to the left of

Route 1 and Route

these routes have
To erase Route

key adjacent

To erase Route
that has the asterisk
the

keys adjacent

arrows. This moves the list of routes

or down.

up

is in the selection box at the

screen,

"SELECT"

erased,

a Route

the UltraNav from

the

press

key adjacent

navigating

to the ROUTES label.

to the CANCEL ROUTE label. The UltraNav

the

waypoints

navigation

data to the last

a

route,

on the route.

waypoint

in

use.

a Route

the MENU

press

2

signifies

waypoints

1,

simply press

to the "SELECT" label.

or

2,

any

displayed,

to the

up

When the

the

press

label. The

and the UltraNav

desired route

key adjacent

route

press

that

saved.

the

other route

use

or down

of the

top

to the

will

be

will

return to

then

key,

the

key adjacent

appears.

_________________________

IcEOUTE 1102

ROUTE 1103

—

ROUTE 1104

press

However,

press

to the

ROUTE

_______

_____

the last loran screen.

LORAN ALARMS
The UltraNav has two loran alarms. One is an arrival

sounds when

other is a CDI. alarm that sounds when
than the alarm's set

come within a

you

point.

preset

distance to a

move

you

the MENU

Now

will

press

stop

key,

the

it will still

the

Icey adjacent

"ERASE

1105

alarm that

waypoint.

off course more

The

key

to

ULTF?ANA

LORAN

OPERATION

WARNING!

USE THIS LORAN RECEIVER

NAVIGATION.

NEVER RELY ON ONLY ONE

I

MAKE CERTAIN THE LORAN

POSITION IN

COORDINATES BEFORE NAVIGATING

THE POSITION MUST

NAVIGATION FEATURES TO

A CAREFUL NAVIGATOR

POSITION INFORMATION.

NOTICEI

LATITUDE/LONGITUDE

V

ONLY AS

METHOD TO OBTAIN

IS DISPLAYING THE CORRECT

BE CORRECT FOR THE

WORK PROPERLY.

AN AID TO

SHOULD

WITH THIS UNIT.

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66

39

LORAN TABLE

OF CONTENTS

Following

a

Route

LORAN-GENERAL 41

ACCURACY

HOW LORAN-C WORKS 42

INSTALLATION - ELC-1 LORAN MODULE

OPERATION 44
INITIALIZATION

SELECTGRI 45
SELECT INITIAL POSITION 46

STATION DATA SCREEN
AUTOMATIC AND MANUAL MODES 48

MANUAL STATION SELECTION
PRIMARY AND ALTERNATE SOLUTIONS 50

SHOW TD'S 51
TRUEAND

LORAN DISPLAYS

POSITION SCREEN

STEER INDICATOR AND NAVIGATION SCREEN 54

NAVIGATION SUMMARY SCREEN 55

PLOTTER 56

USING THE PLOTTER WITH A WAYPOINT 57
PLOTTER MENUS 57

CLEAR PLOTTER
SELECT PLOTTER RADIUS SIZE 58

SELECT PLOTTER UPDATE RATE

WAYPOINT NAVIGATION

HOW TO SAVE A WAYPOINT

SAVING PRESENT POSITION AS A WAYPOINT
SAVING PRESENT POSITION

ENTER NEW WAYPOINT/GO TO WAYPOINT 60
WAYPOINT RECALL

ERASEAWAYPOINT 62

ROUTES

CREATINGAROUTE 63

FOLLOWING A ROUTE

CANCELLING

ERASING A ROUTE 66

LORAN ALARMS 66

ARRIVAL

C.D.I. ALARM 67

NMEAINTERFACE

ASE CORRECTION 68

LATITUDE/LONGITUDE

TD OFFSET ASF CORRECTION 70

SELECTUNITSOFMEASURE

BACKLIGHTS
LORAN TROUBLESHOOTING 72

MAGNETIC

POSITION

-

VIEW AND SAVE

(QUICK SAVE)

A ROUTE 66

ALARM 67

ASF

CORRECTION

41

43
44

47
49

52
53

53

58
58 ____________

59
59
59

60
62
63
65

68
69

71

72

To follow a saved

route, press

to the ROUTES label. Now

FORWARD" to follow a route from the first

the

press

MENU

the

key,

key adjacent

waypoint

"RTE BACKWARD" to follow a route from the
first. The screens are

the same. In this

appears

pressed.

An asterisk

routes that have
Move the list

keys adjacent
labels Until

selection box

Route number one is used in this

example.

after the

appears

up

to the

desired

the

at the

Press the

virtually identical,

example,

key adjacent

route forward is used. The screen below

to the "RTE FORWARD" label is

to the left of the

waypoints assigned.

or down

using

and down

up

route is

of the screen.

top

key adjacent

the
in

the

to

and

instructions for both are

_________________________

P.OUTE

*ROuTE *02

ROUTE StUB

-ROUTE *04

ROUTE *05

the 'SELECT" label. The screen

shown below

appears.

EXIT

I

____

_______________

-

N 21°53.D5

2 U 78° 24.51

PICK A UPt

TO START

ROUTE #01

FORWARD

SELECT

S

a

Now choose
the route. The default is

number

a

a

ample,

route from
The UltraNav will show
data to each consecutive
the route after the first

selected.
adjacent

until the desired
selection box at the

Press the

"SELECT" label

and

point

the first

one,

however

any waypoint

Again, press

to the

key

start the route.

then the

key

adjacent

to the "RTE

last

to the

waypoint

last,

to the

or

ftOiY

_____

_______

as shown in this ex-

you

and down labels

up

waypoint

adjacept

to choose the

________

waypoint

waypoint

can start the

in

the route.

navigation

waypoint

waypoint

the

keys

in

is

of the screen.

top

to the

to start

the

way-

is

in

-

The UltraNav Will show

the

waypoints

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

40 65

in the route. As

navigation

and

plotter

come within .1

you

information to each of

nautical mile of

Loran - General

ROUTE

the desired route number is in

Once

the

box, press

"SELECT" label.
route number

screen shown

the

key adjacent

In this

example,

one is used. The

below

appears

N 31°53.D6'

2 LI 78024.51

SELECT

FOR

ROUTE #01

—

a

Continue

order

until
been

Each route can have

points.

add an undesired
press

ROUTE" label.
waypoints

start the selection
After

points, press

"EXIT"

the last used loran

selecting waypoints

wish to travel in the route

you

all of the desired

picked

If

you

the

key

in the route. You can then

selecting

label. The UltraNav returns to

UJPTS

—

ti

QU

waypoints

for the route.

up

make a mistake and

waypoint

adjacent

This erases all of the

all of the route's

the

to the

process

key adjacent

display.

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

to the•

next.

This is the

lets
route. Press the

or down arrows to

up

list of

point appears
the

adjacent

small "01"

point's

that this is the

route.

in the

have

to ten

way-

to a

route,

"CLEAR

over

again.

way-

to the

64

you pick

waypoints.

top

ROUTE 1103
ROUTE
ROUTE

I

waypoint

the

of the

to the "SELECT"

appears

number.. This

selection menu. It

waypoints

keys adjacent

scroll

When the first

in the selection

screen,

first

press

above

lets

waypoint

31°53.O6

N

2 U 78°

SELECT

FOR ROUTE

<44S

1102

1104
1105

a

for the

to the

through

the

label. A

the

you

in the

24.51

iiiuirnj

the

way-

box at

key

way-

know

UPTS

#01

UtfltE.H

ui

+1

This section covers the

Loran.

UltraNav

Loran is short
that uses
sensitive receivers. Thus,

distances.

Loran was
was called Loran-A
and

version, Loran-C,
distances than

ACCURACY

The absolute

miles,

to return to the same

between the two
tells
find

However,
numbers above

affects the

chance for

it can

If

you

that is

Once

information on the UltraNav to the chart.

The ELC-1 Loran-C

for

position

for

Long RAnge

powerful

developed

development

depending

where

you

way

your

the

accuracy.

position

down to

vary

wish to double check

clearly

you arrive,

low

and used

and

continued

was introduced

Loran-A and it's easier

accuracy

on

your

spot)

types

are

you

back to the same

accuracy you

suggest.

error.

thirty

marked with

let the Loran

information.

frequency

operated

of Loran is between

of

on the

The

NOTE:

installation and

module must be

Navigation.

(100 kHz)

can

you

during

at

during

in

location.

is 100 feet or belier.

accuracy

map. Repeatable

site time after time.

experience may

The

crossing angle

sharper

A

ninety

your

settle,

without a

Loran,

41

degrees

latitude/longitude

operation

determine

World War II. At

a

higher frequency.

the fifties.

sixties. It works over

the

to use.

Repeatable

is

important.

the

crossing angle,

degree

first

then

compare

It should be

of the UltraNav's

attached to the

It's a

navigation system

transmitters and

radio

your position

The current

0.1 and 0.25 nautical

accuracy (your

The difference

Absolute

accuracy

be as

not

of the

crossing angle

large position

a

spot

pick

marks.

the

over

that time it

Research

Loran

accuracy

lets

good

lines of

the more

is

error.

on the chart

Then

go

position

close.

very

longer

as the

position

best,

to it.

long

ability.

you

but

MOW

LORAN-C WORKS ROUTES

The Loran
are

called a "chain." The letter "M"

inside the chain. The other
Their names

secondary

with the

interval
a

different GRI.

The

master station

dreds of miles
transmitter to reach
difference between

UltraNav

your
seconds.

your
tion

is an
and one of the secondaries
located somewhere on

system

stations. The

master which transmits at

is called the

secondary

automatically

location. The time

Plotting

position

imaginary

consists of

are

W, X, Y,

stations transmit at

transmits. Since these transmitters are

apart,

and

secondary

Group Repetition

it takes a different time for

The Loran

you.

the master and two of the

chooses the best

difference or

the TO on

somewhere on

line on

the 14605.2 LOP.

three to five transmitter stations.

designates

stations in the chain are the secondaries.

Z, although

transmitters are

precise

Interval or GRI. Each chain has

precise

receiver measures this time

master-secondary pairs

(TO)

the master station

not all chains have four

synchronized

time intervals. This time

time

intervals after the

located hun-

the

signals

secondaries. The

is

measured in micro-

a chart with Loran-C lines results

a line of

which the time

is the same. In this

position (LOP).

delay

A line of

between the master

example

These

from each

with
posi-

the

boat is

for

The UltraNav
This feature is called Routes. A

points.

information

waypoint,

matically

this

waypoint

for the next

waypoints

There are two
select the route
To follow a
decide whether to follow the

are

steps
Creating

To create a

loran mode. The

cent to the ROUTES

Next,

press

screen shown

A

gives you

When

you

to the first

the arrival

selected

until the arrival alarm sounds and

waypoint.

in

the route.

steps necessary

number. Then

route, you

completed,

a Route

route,

the

key adjacent

below

the

ability

run a

waypoint

alarm

the unit.

by

This

simply

the UltraNav

route,

sounds,

Navigation

happens

determine the

route forward or backward. After these

the UltraNav will start

first

menu on the left

label. The screen shown

press

the MENU

to the "CREATE ROUTE"

right appears.

to

to several

go

route consists Of two

givesyou

in the route. As

then the next

you

waypoint

information is

the

until

you've

travelled

to create a route.

the

pick

aypoints

key

appears.

starting waypoint,

navigating

while the

Now

press

below left

waypoints

or more

navigation

reach the first

is auto-

displayed

process

repeats

to all the

First,

to use in

must

you

the route.

on

the route.

unit is in the

the

key adja-

appears.

label. The

in

a row.

way-

then

for

I am] j1i14 NI

athN!Th1 &I1

ROUTE
ROUTE

ROUTE fl04

1102

U03

ROUTE 1105

—.

The Loran receiver
master

31882.8. If

the first

lines.

and another

you

line-of-position.

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then measures the

secondary.

this LOP on

plot

Your

position

time difference between the

The

example

a

chart,

is at the intersection of the two

42

on the next

notice that it crosses

you'll

page

is

The

UltraNav has the

ber one

adjacent

into the

through

to

selection box at the

the

top

to store

on

of the

63

capability

five are

up

displayed

or down label to move the

twenty

routes. Routes num-

the screen. Press the

desired route number

screen.

—

key

WAYPOINT

RECALL

You must recall

screens.
menu shown

Four

waypoints display

screen.
points

the

adjacent

This moves the

numbers
desired

the reverse
the

SELECT label. The
played

recalled and the UltraNav

to the loran screen. To exit from this

screen without
simply press

To recall one of these

other than the one at the

screen, simply press

to the

waypoint

screen, press

at the

a

waypoint

To recall a

below

appears.

or

up

list of

or down.

up

number

video area at the

the

of the screen will be

top

recalling a waypoint,

the

key adjacent

to use the Steer

waypoint,

on this

down labels.

waypoint

When the

key

waypoint

first

way-

the

key

appears

top

next to the

dis-

will

return

to the

press

top

in

of

Indicator or

Waypoint

rn

of

H

'U

"IN

"U

aN

Navigation

Recall

key.

The

31°5O,.O3

78°2211
31°48.31''

78° 19.01

31°43.24

'U 78°25.30'

t

a_

Exit label.

k

All Loran-C receivers work on this
also

display

and, using
longitude position

on the UltraNav to determine

tude

If

you

Coast Guard's book
book that describes

latitude/longitude.

a

complex

wish to know more about

mathematical

data. You can

"Loran-C USER HANDBOOK."

Loran in

The receiver

Loran-C,

greater

principle.

formula,

display

position.

your

detail.

Most modern receivers

takes the TD information

converts it to Iatitude/

both TO's and

order the United States

latitude/longi-

It's an excellent

ERASE A WAYPOINT

To erase a

first

list,
key.

the "ERASE A WAYPOINT' label.

This screen

the

keys

labels to

or

up

is in the black

press
"ERASE" label.

waypoint

To return to the last used loran

screen, press

"EXIT" label.

position

press

Now

press

appears. Simply press

adjacent
move the list of

until the desired

down

the

key

from the UltraNav's

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from the

the WAYPOINT SAVE

the

key adjacent

to the

selection box.

adjacent

This will erase the

the

key adjacent

waypoint

or down

up

waypoints

waypoint

Now

to

the

memory.

to

to

the

62

ERASE

LJAYPOINT

N3EtdL42i.!

1.

72° 33.51'

4

32° 14.16'

E

73°02.03'

S

a_

Loran-C User's Handbook
COMDTINST M16562.3

Documents

Superintendent

U.S. Government

Washington,

Code

#050-012-00171-5,

There is a small

INSTALLATION
When

choosing a mounting

where it's clear of other

A

antenna
be
VHF

location is

high

mounted

radio antennas.

of

D.C. 20402

charge

shouldn't

vertically.

Printing

for the

-

ELC-1

antennas, wires,

preferred,

be the

Make certain it is as far

Office

1980

book.

Loran-C MODULE

location,

however for

highest pad

remember to install the

masts,

lightning protection,

of the boat.

42

ELC-1

or other obstructions.

the

The antenna should

away

as

possible

from

Improper performance

close to
places

and obstructed.

You must

antenna. The threads are

mount base is most

The base

(NOT pipe thread).

hardware.

The

cable

extension cable is available if the cable is too short. Ask

or call
Service

The ELC-1 can be attached to a swivel

mast,

metal

the

Loran

purchase

mounting

cable

supplied

if

it's too

your

department

if desired.

objects

Tighten

long. Instead,

local

OPERA11ON

INITIALIZATION

The Loran must be
used. Once it finds

time

power

hundred miles from the

shouldn't have to

is turned off. If

can also occur if the antenna is mounted

such as

assembly

an

eight

commonly

threads are

This

all hardware

with the ELC-1

service center or the

for more information.

initialized or "told where it is" the

your present

last time

repeat

tuna towers.

in the clear is

foot

stainless steel or

standard 3/8"-24 for the

used to mount the Loran to the boat.

conventional 1"-14 machine thread

allows the use of standard antenna

securely.

is

thirty

coil and store it out of

position,

don't travel over

you

turned the loran off

you

this

step.

Again,

preferable

fiberglass whip

feet

long.

Eagle Factory

bracket

or

hollow extension

the UltraNav stores it each

approximately

a location that

to one that is

A ratchet

whip.

mounting

Do not cut the

the

Customer

very

An

way.

dealer

your

first time it's

one

1

you

too

high

Now

enter the

member to add a zero to the
tude if it's less than 100
The screen shown below
after the last

entered.

LAT

P4

320

U82°

waypoint

longitude

/

LON

LPJPT

18.07'

5(133'

location.

degrees.

appears

number is

ENTER

aLAT'LON

longi-

"

Re-

H
w

WPT

0

0

':w

C

C

4

If

are

you

(east

longitude), press

cent to the EAST/WEST label. Other-

if

wise,

correct,

ENTER label.

The screen below

everything

east

press

of

Greenwich,

the

on this screen is

the

key adjacent

appears

England

key adja-

to the

next.

THE COUPLER

MUST BE

When the UltraNav is turned on for
the
LORAN

right appears.
using
adjacent

If

you

and

the
the "ENTER INITIAL POSITION"

label.

first

very

key,

the GRI

to the "SELECT GRI"

know

want the loran

you

GRI,

press

and

time,

the screen shown at

To initialize the

search, press

your present position,

the

key adjacent

you press

loran

the

label.

to choose

the

key

to

44

INITIALIZED

4

—

.

This

menu

gives you

You can save the

next available
"SAVE AS #" label at the
tcreen. The VIEW/SAVE menu

stores the

desird.

you

Position. -View and

Finally, you

waypoint

the

key adjacent

WPT" label.

number,

waypqint

(See

can

and not save it

three choices.

waypoint

using

fop

under

the

Saving

Save

Method.)

travel

directly

by pressing

to the "GO

under the

the

of the

any

Present

TO

number

to the

61

tzEIMan

.11

sS

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loran at

The

waypoint

don't have to

you

stored the

Save

It's

easy

Saving
The Quick Save"

number.
method.

first

press

'VIEW/SAVE"

shown below

Your

present

the screen.

topof

this

waypoint

than the one

the

key adjacent

labels.

numbers

point
desired

the reverse

next to the SAVE
displayed

be saved under

number increments each

keep

waypoint,

home dock or

your

tile

to remember

Present Position - View

feature doesn't

You have to use the next

To save

the

your present position

Waypoint

label. The screen

appears.

position displays

If

you

under a number other

displayed, simply press

to the

This moves the list of

or down. When the

up

video

the

top

this

number

area,

label. The

of the screen

number,

waypoint

at

UltraNav will return to the

screen. To exit from

the

press

Enter

key adjacent

New

Waypoint

this screen without

time

track of the

UltraNav returns

launching ramp

home is number one

waypoint

to the loran

TIP

and Save Method

allow the selection

available number

under

key,

then

press

Save

at the

want to save

or down

up

way-

appears

press

loran

the EXIT label.

to

/ Go To

in

the

key

waypoint

will

then the

Waypoint

saving

save a

you

numbers.

display.

as

waypoint

when

you

of a

when

any waypoint
the

key adjacent

SAVE

31°26.09'

N

Ui 83°

AS UJPT

a

waypoint,

waypoint,

Once

number one.

so

you've

want to return.

waypoint

that

using

number,

to the

62.38'

1t1

simply

You can re-initialize

(Note:
Initial Position features

features tell

these

initialization

SELECT
Use this

calculate

charts

area.

the loran

"CHANGE

"SELECT
appears.

GRI

function if

your present position

in the back of this

Once

screen is

SETUP" label.

CR1" label. A screen

The GRI for the

The chain's

this

shown.

To

change

adjacent

to the

This scrolls the

display

chain is
press

window.

displayed

the

key adjacent

SELECT label.

revert to the
and

window

CR1". The

place

on the

the

the stations within
Once it finds the

processes
doesn't need to find and

mine the

latitude/longitude.

stations with

how to access these

is

identical.)

you

know the

you

displayed.

name is

example,

the CR1,

or down labels.

up

chains

When the desired

in the

The UltraNav

last used loran screen

following

screen;

UltraNav then looks

the selected chain.

stations,

the

signals

signals

good

the UltraNav's loran station

To save
Waypoint

to save the

a

waypoint

Save

waypoint using

to the "INPUT

the

key adjacent

waypoint

longitude

are identical.

method.

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

other than

key.

The

your present

waypoint

latitude/longitude, press

save menu

LL WPT" label. To save

to the "INPUT TD WPT"

For this

The screen at the

example,

top

60

position,

a

waypoint

label. The

we'll use the Iatitudef

of the

first

appears.

the

using

steps

next

page

key

press

If

you

adjacent

TD's,

to save

appears,

the

wish

press

"STATION DATA" section

the

necessary

latitude/longitude.

a

usable. When the

for use.

WARNING:

stations in the

DO NOT NAVIGATE

(EITHER

the

are menu

know

don't

using

manual for the

chain's

Now

Finally, press

chain is shown

below the

right

7980 is

CR1

the

press

through

key UNITED• STATES

the

window,

to the

will

message

"Searching

it

until it "locks on"

lock onto

However,

to calculate a

acquisition

in this manual. Until

chain and locks onto them,

means the

This

position

numbers

LAT/LONG

any

items. The

features

your position.

chain

the

proper

number, press

the

press

the

similar to the one

at the

,_...

in a

for

for

to each station in the

all the stations in a chain

it does need to lock onto

latitude/longitude.

and

latitude/longitude

stop

WHEN THE POSITION

OR

TD'S)

45

The Select CR1 and

time.

following

section on

from the menus.

The UltraNav

select.

you

chain to use

the menu

key adjacent

key adjacent

shown below

of the screen.

top

See the

in

key

to

to the

SOUTHEAST

-___________

_____________

___________

To view

signal strengths,

the loran finds all

it flashes

display

flashing,

IS

the loran is

DISPLAY

FLASHING!

The

will

your

while

the

______
______

chain.

to deter-

three

see the

of

the

is not

ready

It

SELECT INITIAL POSITION

To initialize the UltraNav
the menu

adjacent
adjacent

shown on the
enter

your present position

latitude/longitude

Remember to

beginning

less than one hundred

The screen shown below

after the last

pears
number is entered.

of

Greenwich, England (east longi-

tude), press

the EAST/WEST

if

everything

correct,

ENTER label. A

the
"SEARCHING FOR

on the screen until

starts

working

signal strengths,

Until the loran finds all of the

onto

them,

longitude display

flashing,

while the unit is in the loran mode.

key

to the "CHANGE SETUP" label.
to the "ENTER INITIAL POSITION" label.

right appears.

coordinates.

enter a zero at the

of the

longitude

the

key adjacent

label.

on this

the

press

on

cycle

see the "STATION DATA" section

it flashes the

is not usable. When the

the loran is

using

in

if

degrees.

right ap-

longitude

If

are east

you

Otherwise,

screen is

key adjacent

message

GRI" scrolls

the UltraNav finds

selection. To

latitude/longitude.

for use.

ready

the initial

Now

it is

to

to

necessary

position

Finally, press

a

INITIAL

method,

Next,

first

press

the

press

the

key

The screen

JLATLOH

4

I ---s

.4

________

EI4TE

the stations in the chain and

view the

station

stations

This means

position

acquisition

in this manual.

in the chain and locks

the latitude/

numbers

stop

key

and

.4

UPDATE

RATE IS

•1O SEC

WAYPOINT NAVIGATION

HOW TO SAVE A WAYPOINT

Waypoints

can then

tion,

hot

fishing spots,

UltraNav
position

waypoints.

are locations that

navigate

or Plotter screens.

can store

as a

to these

and other

up

waypoint,

you

positions using

Waypoints

fishing

to 100

or enter TD's or

To

you may

update
interval

better chance to see more
To

key adjacent

Rate" label on the

screen. To select an

simply press

desired time. The screen will

returning you
new time. The available times are:

5, 10, 20,
5, 10,

save in the UltraNav's

waypoints.

a continuous line

keep

want to

interval.

between

change

experiment

Lengthening

plots gives you

the

plotter

time,

to the "Select

plotter

update

the

to the

and 30 seconds and

and 20 minutes.

the Steer

are useful for

or

navigational

You can store

latitude/longitude positions

adjacent

key

plotter

Indicator, Naviga-

marking shipwrecks,

locations. The

plotted,

with the

the

history.

press

Update

menu

with the

memory.

your present

a

the

interval,

the

to

clear,

2,

1,2,

You

as

n

INITIAL

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P432°

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EfISH

46

INITIAL

LAT'

________

*:LEAR

LON

18.07'

50fl3'

IJEST:

I.

EttERi.

Saving
Waypoint (Quick

The UltraNav lets
present position

presses.

lets

or other
To save

waypoint,

Save

appears.
adjacent

Present Position as a

Save

Feature)

save

you

with

only

This "Quick Save"

save the

you

Objects quickly

your

first

key.

Now

to the "SAVE AS #0" label.

position

and

present

press

The menu shown below

position

the

Waypoint

simply press

your

two

key

feature

of a wreck

easily.

as a

the

key

59

a

.4,

4

______________________

________

PLO1TER
Clear Plot

The Clear

track line. The
draw

pressed,
present position

MENUS

Plot" label clears the solid

track

your

however the

the screen.

(cont.)

plotter

will continue to

after this

will be centered

key

location of

is

your

on

STATION

1

4

SELECT

RADIUS

SIZE

a

UPDATE

4

The UltraNav's Station
for the stations

MENU

press

screen shown
and all of the
Stations that

example,

DATA

Data Screen

in the current GRI. To

two times.

key

the

key adjacent

are

below

secondaries in the chain

The screen shown

to the "STATION

right appears.

currently

the master and stations

displays

The TD's for the

all of the

view this

below left

DATA SCREEN".

display

in use are shown in

Y and Z are

technical data

screen, press

appears.

master station

top

of the

at the

reverse video.

in use.

the

Now

The

screen.

In this

SUt1I1AR?

SCREEN

a

SelectRadius Size

w Swe

SELECT RADIUS

___

IN

_____

NAUT. MILES

____

RADIUS

IS

______

Select
The

present position.
position

from 2 seconds to 20 minutes.

As each

after a certain

line,

that's a

not reach from the

Update

plotter

is

dot is

but still

long

1'4NM

Hate

shows

When

updated

placed

length

shows the

distance

track

your

once

on the track

has been achieved.

history

away

starting

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

This menu allows the
circle's radius on the

The
when the UltraNav is turned

very
are:

and

zoom in or

display.
press

radius size. The

turning you

radius.

by drawing

radius is 1/4

plot

first time. The available

1/4, 1/2/, 1,

200 nautical miles. This

zoom out the

To select a

the

adjacent

key

the

to

a solid line

the unit is turned on for the

ten seconds. You can

every

is erased from the

one

line,

This shortens the

of

your passage.

and use a short

location to the destination.

58

update

changing

plotter

nautical mile

2, 5, 10, 20, 50,

radius,

to the desired

screen will

plotter

behind

very

vary

If

plot

you

time,

of the

sc(een.

on for the

plot

lets

plotter's

simply

clear,

with the

your

first

time,

this time

end

plotted

a course

the line

radii

100,

you

re-

new

the

may

The

station status.

-

S

this TD for

C - CYCLE ERROR

the

-

L

only

N - SNR The receiver
Do not use this

B - BLINK The station

signal

STATION

DATA

4

letter on the far

SEARCH

proper cycle.

LOCKED

when the

is not usable. Do not use

__

right

The status is as

Searching

navigation.

The receiver is

Do not use this

The receiver has

"L" indicator

TD for

has a low

navigation.

transmits a

of the screen is an abbreviation

side

follows:

for the station's

TD for

locked on to the station.

displays.

signal

this TD for

47

ii: 14958.69

X 31903.51

Z 60865.50

U

R

signal.

trying

navigation.

to noise ratio for this

signal

Do

to "lock on"

"Blink" when it's

called

navigation.

fl

X

not use

to

V 2

R

Use a TD

C
C

C

R

for the

station.

U 14958,29

X: 31903.51

L
L

98799

'HI'

MW<VZ

R RR

DEPTH 50.7 FT

On this

example,

all stations are

Below the

graphs showing
each station. The number at the

of the bar

signal strength

best and 0 the
solid
use

example,

currently

beneath the bar

stations the UltraNav recommends

using. Finally,
screen,

locked,

station's

graph

represent

the loran.

by

stations Master,

in use. The

the water

with

TD's are the bar

the

signal strength

top

shows the relative

with 9 the

worst.

stations

Again,

graphs signifies

the bottom of the

at

depth

good signal strengths.

maximum,

Graphs

currently

in

this

and Z are

'I,

letter "R"

is

displayed.

that are

in

the

for

or

If

your present position

UltraNav will first clear the
your present position along

of the screen. Your

times. You do not have to recall a

To clear the

Using

Using

see the effects of wind and current on

this

manner,

for more

plotter,

the Plotter with a

the

plotter

simply

information),

to the one below

starts to move outside of the

display

present position

see the Plotter Menus section

Waypoint

with a recalled

recall a

then

appears.

for an instant. Then it will redraw

with a

portion

waypoint

waypoint

waypoint (see

the PLOTTER

press

of

your

will

always

to use the

or route is an

boat. To use the

your

the

the

circle,

track near the center

be on the

Waypoint

key.

plotter

plotter.

easy way

plotter

Recall section

A screen similar

at all

to

in

To exit this

AUTOMATIC and MANUAL MODES
The UltraNav's Loran has both automatic and manual modes. Do not

confuse this with the sonar automatic and manual modes. These are
two

independent

The UltraNav chooses the stations with the best
signal strengths

continually monitoring

screen,

features.

when it's in the automatic mode. It does this

to use. If the unit determines one or more stations arebetterto use

than the current

However,
stations. When

use the same stations when
when the

and Y when the

M,X,

to

navigate

occur.
from

Placing

changing

ones,

there are times when

you're navigating using waypoints

waypoint

back to that

the unit in

stations.

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

the MENU

press

the stations

it will

automatically

you

travelling

was saved. For

waypoint

waypoint. Otherwise, navigation

was

the manual

48

and choose another one.

key

signals

to determine the best ones

switch to the new stations.

don't want the unit to switch

to a

waypoint

example,
saved, you

mode

if the loran was

prevents

crossing angles

by

is one. You must

as the ones used

using•

must use

M,X,

errors can

the UltraNav

and

and Y

The "S' is
was

the

waypoint.

your present position,
the destination. The destination is the

recalled

using

location in the route. The doffed line
is the direct

starting
Follow this line to

The destination

displayed

corner. In this

number 10 is the destination.
Distance

at

the bottom of the screen when a

An arrival alarm is

a

preset

more information on the arrival alarm.
PLOTFER MENUS

Pressing

set of
functions follows on the next

your starting

your position

The

waypoint position.

a

it's the first

route,

path

location to the destination.

waypoint

in the

plotter's

example, waypoint

To Go

distance to the destination. See the section on alarms for

(DTG)

the MENU

menus,

relating

location. Thi

when

flashing

recalled

you

cross is

and the "D" is

If

are

you

waypoint

or course from the

to the

get

available that sounds a tone when

key

number is

lower left

and

Bearing

while

to

only

waypoint.

to

waypoint

the

plotter

the

plotter. A description

page.

57

waypoint (BRG)

is recalled.

is

displayed gives you

are

displayed

come within

you

of the menu

a new

manual

Bearing

third

the

Heading (HDG)
screen.

heading (direction

Velocity

actual

Speed
averaged speed

are
boat

going

eight
Time

you
Water

PLOTTER

The

To

Waypoint

display, showing

recalled

making.

waypoint.

This

display

Made Good

toward the

speed

Over Ground

For

speedometer

head-on into a two

knots.

To Go to

to reach the recalled

is the

Depth

lets

plotter

the screen. The

destination if
waypoint

To use the

PLOTTER

this one

The

flashing

position.

or

path

is.a

compass

and

east,
radius

screen.

displayed

you

on a route.

or

plotter,

key.

appears.

cross

The solid line

have travelled.

you

west marked.

is

displayed

Your

the bottom

at

(BRG)

is the fifth item

shows

of

travel).

(VMG)

(SOG)

over

example,

says

waypoint

last item on the Nay

easily

you

plotter

are

simply press

A screen similar to

is

rose with

at the

present position

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

is the

the direction

waypoint.

ground

if

you

knot

is the time the UltraNav

waypoint.

see

will also show

travelling

your present

is

your

north, south,

The circle's

top

of

to

on the

your

is

your

is the

that

you

your

are

travelling

current,

your

to a

the

track,

The circle

of the

is

screen.

the

56

then

Summary

course

your

OTO

(MM)

XTE(MI1)L

BRO
HOG (MiG)

tJMO

(MflG) 3270

(1(N)

SOG

(KN)

TTG

00:

OEPTH(FT)

at ten knots,

your

and direction

starting position

1 :32

but

over

speed

calculates it

Screen.

5,07

0.01

322°

16.4

16.6

you're

ground

will take

of travel on

and

is

To

mode,

press

"CHANGE SETUP"

the MENU

"AUTO OFF" label

of this

adjacent
disappear, switching
loran

The

the

which mode is in use.

See the "Position Screen"

MANUAL STATION

The UltraNav's

stations to
To

press

key adjacent

SETUP" label. Now
jacent

TIONS" label. The
low

M, Y,

TD's in reverse

also recommends

tions. To
press

stations. After each

an asterisk
station's

Press the
the

selecting

label.

loran screen.

crossing angles,
after a short wait.

the UltraNav

place

first

press

the

screen. Now

key

key

adjacent

two

to this label.

screen,

word "AUTO" or

of the

top

manually

position

use. This also locks

change

the MENU

to the

to the "SELECT

appears.

and Z are

the

In this

change

keys adjacent

""

letter, signifying

key

keys adjacent

the desired stations, press

activates

This

in the

the MENU

key.

Now

to the

label. Now

more times.
appears

press

The menus

to the

"MAN"

screen, showing __________

SELECTION

manual station selection

press

The

at the

top

the

key

will

last used

appear

section for

at

more information.

the unit in the manual

stations,

then

key,

"CHANGE

press

screen shown be-

example,

in

use

video).

using

stations, simply

key

displays

for all stations

to stations

your

If the stations

the unit

first

tile

press

the

LORAN STA-

(shown by

The UltraNav

these sta-

to the

is

pressed,

next to the

the

selection

should show

ad-

key

stations

the

desired

change.

that

you

W,

M,

you've

49

and Z were

the

and returns the UltraNav

chosen are locked

____________________

SELECT

UF1Efl

OJJ T F' UT

________________________

TFLIE

E.EAF 1iJO

_______________

4

CLEAP

feature

lets

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1

decide

you

mode.

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intend to

key adjacent

a

latitude/longitude position

use. in this

pressed.

_____

example,

After

to the "ENTER"

to a

with

good

which

PRIMARY and ALTERNATE SOLUTIONS

The loran

normally

difference between the master and two other
Each time difference results in a line of

tion is the intersection of the lines of

determines its

position by

position.

position.

measuring
secondary

Your

present posi-

This is called

the time

stations.

a "fix'.

A mathematical formula in the loran receiver uses TD's to determine

the

latitude/longitude position.

in

position
baseline is an

latitude/longitude

imaginary straight

secondary station.)

on

fix

qualities

other side of the

the

give good
gitude

can be on either side of a

It's

possible

and

signal strengths,

Due to the nature

line

connecting

for

baseline

loran to lock onto the

the

from

of

loran, your

baseline.

the master and

show the latitude/lon-

but

your.present

position.

(The

each

stations,

Distance
indicator.

waypoint.

To Go

This is the distance from

When the UltraNav is first turned

(DTG)

is

displayed immediately

in nautical miles.

The

bearing

center left side of the screen. The

magnetic

To switch to

INGS" section.

The

waypoint you're currently using

of the
The cross track error

above the water
the

top

When
nautical miles.

to the

waypoint

(MBRG)

bearing display.

when the UltraNav is turned on for the

true

a

bearing display,

depth display.

of the screen

by

from

(XTE) displays

This is the same distance as shown at

the C.D.I.

the UltraNav is first turned

your present position displays

on,

below the C.D.I.

your present position

the distance is shown

on,

to the

at the

bearing

is shown

see the "SELECT TRUE BEAR-

for

navigation

at the bottom of the

display, only

the cross track error

in

degrees

first

shows to the

screen,

in

digital

numbers.

time.

right

displays

right

in

NAVIGATION

This screen shows all

numbers. To
UltraNav is in the Loran mode. The

Nowpress

following

All

(Note:
miles,

degrees magnetic,

when the UltraNav is turned on for

These two

side of the

positions (your present position

baseline)

They're usually

a

position

the

could be
important

far from

baseline,

only

to

the difference between the alternate and

a few

know

a loran.

are called the

far

apart, making

actual location.

your

miles,

or less. For this reason

primary

it

easy

your approximate position

and the one on the other

and alternate solutions.

to tell if the loran is

when

if

you're

alone,

initializing

However,

displaying

close to

primary

its

always

solution

or

using

the

very

Distance To Go

of the screen. This is the dis-

top

tance

to the last recalled

Cross Track Error
second item on this screen.

track error is the distance to the side

To switch

MENU

label. Now

key.

from the

Next,

press

primary

the

press

the

key adjacent

to

the alternate

key adjacent

to the "MORE" label.

solution,

to the

first

"CHANGE SETUP"

press

the

of

desired course.

your

50

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

SUMMARY SCREEN

navigation

this

display

the

screen

key adjacent

appears.

screen,

to the "NAy SUMMARY SCREEN". The

features are in nautical

and knots

first

time.)

(DTG)

shows at the

waypoint.

is the

(XTE)

Cross

information

press

screen shown below

to a

waypoint

the MENU

OTO (NIl) 5.07

XTE(NM)L 1101

BRO(IIflG) 327°

HOG (MflG) 3220

0110 (1(N) 16.4
SOG (1(N) 16.6

00:18:32

OEPTH(FT) 87a9

55

in

twice while the

key

appears.

TTG

digital

STEER INDICATOR

steer indicator

The

and

bearing

use this
The

navigation display

indicator
screen

0.1

to a

waypoint.

display.

display except

instead of the

0.0 O

III.,, 3i.l.yI

a

S

TEE R —

i

DT0c

I

(NM>

312°

0.02

65.8 FT

STEER INDICATOR

DISPLAY and NAVIGATION

display

shows

A

waypoint

shows the same

it shows the

steering

indicator.

steering,

cross

must be

information

present

position

N 32°

U

a*i

2

SCREEN

i1sZi1!

312°

DISPLAY

track

saved and recalled

as the steer

at the

_________

error,

distance

ot the

top

to

14.06'

810 2426'

424

.

2

65.8 FT

NAVIGATION SCREEN

This menu

the

key adjacent

ALTERNATE

UltraNav

after this selection.
screen with the

displayed,

new

position

doesn't show the

longitude position,

change
primary

The solution

UltraNav is

position

section
Check.your position

longitude. They

gate
To switch

above
PRIMARY SOLUTION".

appears.

to the

SOLUTION"

returns to a loran

If

latitude/longitude

the

lat/long

displays.

proper

you may

stations,

and alternate

screen.

then

currently

displayed

See the "Position

for more information.

against

should

normally.

back from the alternate

The

steps.

only

Finally, press

'SELECT

The

label.
screen

you're

using

will flash

until a

lithe unit

latitude/

have to

switching

try

solutions.

in use

at the

be the same.

difference

the

by

of the

top

the loran

AEJUStASP,

a

a

Di sPLAYED

_____________________

ALTEF

the

tLEAi

Screen"

after it

displays

If

use the loran

so,

to the

primary

is the menu label

solution, repeat

lJ S ITI 0 Fl

F

III TO'S

SELECT

SOLIJTIOtI

reads

NATE

a new latitude/

and navi-

the

"SELECT

The course

indicator screen.
miles

imaginary
tion.)

C.D.I. arrow

message

the boat to

The C.D.I.

for the

adjust

ample,

if

you

information on

deviation indicator

This shows the cross

are to the

you

line

For

example, you

points

also

get

range

first time. To set it to a different distance,

menu. The C.D.I.

ii the C.D.I.

are off course one

side of

between

drawn

to the 0.1 mark on the left side

appears

back on course.

is 0.1 nautical mile

range

setting

the C.D.I.

(C.D.l.)

your

your

are a tenth of a mile to the

STEER

range

is one

mile or more. See the ALARMS

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is at the

track error distance

desired

starting

>",

telling you

when the UltraNav

alarm are the same.

and

then the C.D.I.

mile,
alarm.

54

top

course.

location and the

which direction to steer

(The

use

steer

of the

in nautical

course

left of course

is an

destina-

of the scale.

is turned on

the CD]. alarm

For ex-

alarm will sound

section

lithe

A

for

SHOW TD'S
The UltraNav

on most screens.

the MENU

press
SETUP" label. Now

above

appears.

tion in

latitude/longitude.

shows either

To switch between

then

key,

press

In this

example,

To

latitude/longitude

press

the MENU

change

to the "POSITION DISPLAYED

to the last loran screen

revert
ences.

The menu will now read

Press the

To switch the

key adjacent

display

again, simply

"POSITION DISPLAYED

to this

latitude/longitude

the

key adjacent

once. The screen

key

the UltraNav

to

TD's, press

IN TD'S" label.

and show the

menu to

get

51

or time

position

repeat

latitude/longitude

differences

and

the "CHANGE

to

is

displaying

the

key adjacent

The UltraNav

in time

the above

IN LAT/LON".

(TD's)

TD's,

shown

the

posi-

will

differ-

steps.

displays.

first

TRUE

and MAGNETIC POSITION

POSITION DISPLAY

Most

navigators

netic north. True north is the
longitude converge. Magnetic
point.

location in

Charts are
uses true north.

projection, you'll

use true

It lies several hundred

readings.

The UltraNav can

When it's turned on for the

switch to

true,

the "CHANGE SETUP" label. Now

"MORE" label two times. The menu shown below

example,

LECT TRUE BEARING"
last used

true.

Repeat

originally
MAGNETIC BEARING".

said "SELECT TRUE BEARING" now reads "SELECT

realize there is a difference between true and

Canada.

usually

magnetic
loran

laid out

If

you plot

either have to convert

display navigation

press

screen, showing

these

of the world. It's where all lines of

top

north is the location our

miles to the south of true

according

a course on a chart

very

the MENU

is in effect. Press the

label. The screen will clear and

to switch back to

steps

to a Mercator

magnetic readings

information in

first

time, magnetic

then

key,

all

press

press

navigation

the

key adjacent

magnetic.

using

the

key adjacent

information

compasses

north,

projection

which

the Mercator

to true or

magnetic

is used. To

key adjacent

or true.

to the

appears.

In this

to the "SE-

return

in

degrees

The menu that

mag-

at a

to the

to

The

position display

present position, heading, speed
ground, depth,

The GRI in use and the mode
matic or
the screen.
these is the

It shows

latitude/longitude

manual) display

Immediately

present position

your present position

shows

and status

or TD's. To the left

your

displays.

at the

beneath

display.

over

(auto-

top

in either

of the word "POSITION" is the ASF

indicator. It

are in use. On the far

primary/alternate

the unit is in the

appear
quality
crossing angles.

tion with caution. The

crossing angles.

when the fix

quality message

(0)

if the unit is in the alternate mode. In this same areais the fix

indicator. Fix

to

nine

shows when ASF's

only

is the

right

solution

primary mode,

If the fix.

The

quality

shows the fix

with zero the worst and nine the best.

(9),

display.

the letters "PAl"

quality

is not usable. A number

is a measure of the

quality

displayed position

position display

is

quality's

AUTO

RSF

FtELrT

H 24°33.37

IJi3i°4363

rix IS 6000(8)

of

135°

23a8 KN

E1EFTH

appear.

lines

displayed

will

and

to the

range

56.8

right

If

use the

poor,

can

flashes the last known

value, It's

GRI :7980

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Pr

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T

"ALT"

of

position's

informa-

with

vary

poor

position

fix

of the

is from zero

JJ UI tJ

LNME

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2:D:....:(i.iF!i

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312°

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BESRItTG

52

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65.8 FT I

TRUE BEARING

(TBRG)

Beneath the

is

travelling. Speed

regardless

at ten knots

elling

over

ground

distance in a

an accurate

gives

The last.

PDF compression, OCR, web-optimization with CVISION's PdfCompressor

do not use the loran for

flashes. Find and

fix

quality message

over

ground (SOG)

of the

speedometer reading.

directly against

is

straight

display

knots. You will

eight

line before the SOG feature

reading.

on this screen is the

correct the

the

unit.

is

your heading,

a two knot

typically

53

navigation

problem

when the

before

navigating

or direction the boat

shows

For

example,

current,
need to travel some

digital depth display.

actual

your

if

you're

then

"settles down" and

position

with

speed,

trav-

your speed