Yaesu FT-767GX User manual

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FT-767GX

OPERATING

MANUAL

YAESU

MUSEN

CO.,

LTD.

roxvo

sapam

Section

81.0

SPECIFICATIONS

.............

1.1

General

1.2

Transmitter

1.3

Receiver

CONTENTS

82.0

CONTROLS,

SWITCHES

&

CONNECTORS

4

2.1

Front

Panel

Controls

2.2

Rear

Panel

Jacks

&

Switches

83.0

INSTALLATION

3.1

Preliminary

Inspection

3.2

Power

Connection

3.3

Transceiver

Location

and

Grounding

3.4

Antenna

Considerations

3.5

Interconnection

of

Accessories

3.6

Memory

Backup

3.7

Tuning

Knob

Steps

84.0

OPERATION

4.1

Preliminary

Steps

4.2

Initial

Power

Up,

Band

Selection

4.3

Mode

Selection

4.4

Tuning

Methods

4.5

Keypad

Frequency

Entry

4.6

Controls

for

Enhancing

Reception

4.6.1

Noise

Blanker

4.6.2

RF

Gain

Control

4.6.3

NARrow

IF

Filter

Selection

4.6.4

RF

AMP

Switch

4.6.5

ATTenuator

Switch

4.6.6

APF

(Audio

Peak

Filter)

4.6.7

IF

Passband

Shift

4.6.8

IF

Notch

Filter

4.6.9

AGC

(Automatic

Gain

Control)

10

coocoocosorra

cacos

16

Section

4.7

Transmitter

Operation:

General

4.7.1

SWR

Measuring

&

Ant.

Matching

4.7.2

SSB

Transmission

4.7.3

CW

Transmission

4.7.4

FM

Transmission

4.7.5

AM

Transmission

4.7.6

RTTY,

HF

Packet

&

SSTV

Transmission

4.8

Programmable

Tuning

Steps

4.9

Memory

Operation

4.9.1

Memory

Storage

4.9.2

Memory

Recall

4.9.3

Changing

Memory

Frequency

4.10

Scanning

4.10.1

Memory

Channel

Scanning

4.10.2

Programmable

Memory

Scanning

4.11

Split

Frequency

Operation

4.11.1

Offset

Frequency

Memory

4.12

Tone

Squelch

Operation

4.13

Tips

for

SSB

(LSB/USB)

Operation

4.13.1

Weak

Signal

SSB

Reception

4.13.2

Strong

Signal

SSB

Reception

4.13.3

Suppressing

Interference

4.13.4

Miscellanea

4.14

Tips

for

CW

Operation

4.15

Tips

for

AM

Broadcast

Reception

4.16

Tips

for

FM

Communications

4.17

VHF

Packet

(F2

Mode)

Operation

4.18

CAT

System

Computer

Control

Page

21

2

22

24

24

24

25

25

26

26

26

26

27

2”

27

27

28

29

29

essss

32

32

33

3

FT-767GX

ALL-MODE,

ALL-BAND

TRANSCEIVER

The

FT-767GX

is

a

solid-s

ting

automatic

antenna

tuner,

power

supply

and

provisions

for

up

to

three

optional

internal

VHF

and

UHF

band

modules.

The

standard

model

provides

100

watts

RF

power

output

on

all

hf

amateur

bands

in

SSB,

CW,

FM

and

FSK

modes

(and

25

watts

AM

carrier

power).

Optional

band

modules

provide

10

watts

output

on

the

6m,

2m

and

70cm

bands.

tate,

all

mode

synthesized

amateur

transceiver

incorpora-

The

die-cast

top

half

of

the

chassis

incorporates

the

Duct

Flow

Cooling

system

originated

for

amateur

radio

by

Yaesu,

where

air

is

circulated

over

the

circuit

boards

and

throughout

the

chassis

by

a

quiet

internal

cooling

fan

when

operating

temperature

rise

Four

internal

microprocessors

with

a

custom

gate

array

provide

the

highest

level

of

digital

integration

and

control

ever

offered

to

radio

amateurs:

including

features

previously

unknown

in

a

transceiver,

such

as

freely

user-programmable

independent

tuning

steps

for

each

mode,

an

auto-calculating

digital

g

step:

SWR

meter,

digital

RF

watt-

meter,

synchronous

tracking

VFOs

and

autospeed

AGC

(when

tuning

or

scanning).

Popular

operating

conveniences

such

as

dual

(A-B)

independent

VFOs,

ten

memories

storing

both

frequency

and

mode,

all

mode

squelch

and

range/step

programmable

scan-

ner,

continuously

variable

noise

blanker

threshold,

IF

shift

and

IF

notch

are

included

with

recent

improvements

in

response

to

operators!

requests.

For

CW

operators,

the

FT-767GX

operates

QSK

and

includes

(as

standard)

an

iambic

keyer

with

linear

speed

control,

selectable

sidetone

and

carrier

offset

(600/700/800

Hz),

3-speed

AGC

(plus

OFF),

and

tunable

audio

peak

filter,

all

adjustable

from

the

front

panel.

A

narrow

(600

Hz)

CW

crystal

filter

is

also

included

as

standard.

For

especially

convenient

VHF

and

UHF

operation

with

the

optional

band

modules,

an

FM

discriminator

center

tuning

meter

is

provided,

and

to

facilitate

repeater

opera-

tion,

a

split-frequency

and

clarifier

offset

display

function

plus

the

mode-

dependent

programmable

tuning

steps

and

tracking

VFOs

are

particularly

useful.

An

optional

subaudible

Tone

Squelch

Unit

can

be

programmed

from

the

front

panel,

and

a

Burst

Tone

Generator

is

installed

as

standard

in

European

versions.

An

expanded

CAT

System

with

enhanced

command

set

allows

practically

unlimited

addi-

tion

of

features

and

user-designed

controls

from

an

external

computer.

The

FT-767GX

also

includes

connections

for

automatic

control

of

the

FL-7000

Solid-State

HF

QSK

Linear

Amplifier,

and

digital

i/o

connection

directly

to

the

FM

modulator

for

high

performance

packet

radio

tnc

interfacing

(personal

computers

and

packet

tncs

not

supplied

by

Yaesu).

Please

read

this

manual

carefully

before

operating

the

FT-767GX.

1.0

SPECIFICATIONS

1.1

GENERAL

Receiving

frequency

ranges:

100

ktz

to

29.99999

MHz

(continuous)

50

to

53.99999

MHz

—

(option)

144

to

145.99999

(or

147.99999*)

MHz

(option)

430

to

439.99999

(or

440

to

449.99999*)

MHz

(option)

Transmitting

frequency

ranges:

1.5

to

1.99999

MHz

3.5

to

3.99999

MHz

7.0

to

7.49999

MHz

10.0

to

10.49999

MHz

14.0

to

14.49999

MHz

18.0

to

18.49999

MHz

21.0

to

21,49999

Miiz

24.5

to

24.99999

MHz

28.0

to

29.99999

MHz

50

to

53.99999

MHz

(option)

144

to

145.99999

(or

147.99999”)

MHz

(option)

430

to

439.99999

(or

440

to

449.99999*)

MHz

(option)

Emission

types:

LSB/USB

(J3E);

CW

(ALA);

AFSK

(JB,

FIB);

AM

(A3E);

FM

(F3E)

Reference

oscillator

stability:

better

than

<3

ppm

(-10

to

+50ºC)

after

15

minutes

warmup

Antenna

impedance:

Receive,

and

transceive

above

50

MHz:

50

ohms,

unbalanced

Transmit

-

40,

30,

20,

17,

15,

12

&

10m

amateur

bands:

20

-

150

ohms

Transmit

-

160

&

80m:

25

-

100

ohms

Supply

voltage:

100, 110,

117,

200,

220

or

234

VAC,

50/60

Hz

Power

consumption

(approx.):

Receive:

55

VA

Transmit:

650

VA

Dimensions

(WHD):

368

x

129

x

295

mm

Weight

(with/without

options):

15.5/13.5

kg

(35/30

Ibs)

*

per

local

requirements

and

Band

Module

1.2

TRANSMITTER

Power

output:

HF

(al!

modes

except

AM):

100W

HF

(AM

carrier):

25W

VHF/UHF

(all

modes

except

AM):

10W

VHF/UHF

(AM

carrier):

2.5W

Modulation

types:

SSB

Balanced,

|

filtered

carrier

AM

Low

level

(early

stage)

FM

Variable

reactance

(+5

kHz

deviation)

FSK

Audio

frequency

shift

Harmonic

radiation:

HF:

better

than

-50dB below

peak

output

VHF/UHF:

better

than

-60dB

Carrier

suppression

(SSB):

better

than

-40dB

below

peak

output

Undesired

sideband

suppression

(SSB):

better

than

-50dB

below

peak

output

Audio

response

(SSB,

with

TX

Shift

off):

not

more

than

-6dB

from

350

-

2900

Hz

3rd

order

IMD

(vs

single

tone,

W100W

PEP,

14MHz):

better

than

-35dB

below

peak

output

Microphone

impedance:

500

-

600

ohms

1.3

RECEIVER

Circuit

type:

triple-conversion

superheterdyne

Intermediate

frequencies:

45.03

MHz,

8.215

MHz

and

455

kHz

Sensitivity:

see

chart

below

Image

rejection:

1.5

to

30

MHz:

VHF/UHF:

70dB

or

better

60dB

or

better

IF

rejection:

1.5

to

30

MHz:

VHF/UHF:

70dB

or

better

60dB

or

better

Selectivity

(-6/-60dB):

SSB,

CW,

AMIN):

2.7/4.5

kHz

CWIN)

(optional):

600/1300

Hz

AMIW):

6/16kHz

FM:

15/30

kHz

Notch

filter

rejection:

better

than

-30dB

Variable

IF

shift:

=1kHz

Audio

output

power:

1.5W

into

4

ohms

with

10%

THD

Audio

output

impedance:

4

to

16

ohms

FT-767GX

Sensitivity

Chart

100

to

|

200

to

|

0.5

to

Sto

|

Gina

mt

||

Tienie

200

kHz

|

500

kHz

|

1.5

MHz|

20.9

MHz

[10dB

S+N/N

(uV)]

SSB/CW/FSK

25

1

4

0.25

0.25

|

025

|

0.25

AM

25

4

20

1 1

1

1

[12dB

SINAD

(uV)]

EM

=

a

-

05

0.32

|

0.32

|

0.32

[Squelch

sens]

SSB/CW/FSK/AM

|

20

10

20

2

1 1

1

EM

- -

-

032

|

032

|

0.32

|

0.32

*

with

optional

unit

2.0

CONTROLS,

SWITCHES

&

CONNECTORS

26

S

U

23/22

1

FRONT

PANEL

CONTROLS

(1)

POWER

This

button

turns

the

transceiver

on

and

off.

(2)

MOX

This

button

manually

activates

the

transmitter

when

depressed.

This

button

must

be

in

the

undepressed

position

for

reception,

and

for

automatic

transmitter

activation

via

the

VOX

and

semi

break-in

or

QSK

systems.

(3)

MIC

Jack

This

8-pin

jack

accepts

the

MD-IB8

Desktop

Microphone,

MH-1B8

Handie

Scanning

Microphone,

or

the

YM-48A

Handie

DTMF

Scanning

Microphone.

Mic

pinouts

are

shown

on

page

9.

Acceptable

microphone

input

impedance

is

500

to

600

ohms.

(4)

PHONES

Jock

This

3-contact

jack

accepts

either

stereo

or

monaural

headphones

with

a

2-

or

3-contact

plug.

When

a

plug

is

inserted

the

internal

or

external

loudspeaker

is

disabled.

(5)

MIC

-S

DRIVE

The

inner

MIC

control

sets

the

transmitter

audio

amplifier

gain

during

SSB

and

AM

trans-

mission.

Output

power

for

SSB

transmission

and

modulation

level

for

AM

transmission

are

set

by

this

control

when

the

speech

processor

is

off.

The

DRIVE

control

sets

the

transmitter

carrier

level

for

CW, AM,

FSK

and

FM

transmission.

Also,

when

the

speech

processor

is

used

in

SSB

or

AM

modes,

this

control

sets

the

processor

drive

level.

2

19

18

(6)

SQL

o

NB

The

inner

SQL

(squelch)

control

sets

the

sig-

nal

threshold

level

at

which

receiver

audio

is

muted,

in

all

modes.

When

the

optional

FTS-8

Tone

Squelch

Unit

is

installed,

turning

this

knob

fully

counterclockwise

into

the

T

SQL

position

activates

tone

squelch

(FM

only).

Set

this

control

counterclockwise

but

not

into

the

click-stop

for

unsquelghed

reception.

The

outer

NB

(Noise

Blanker)

control

adjusts

the

width

of

the

blanking

pulse

when

the

noise

blanker

is

activated

during

reception.

If

set

very

far

clockwise

receiver

audio

may

be

dis-

torted.

(7)

AF

o

RF

The

inner

AF

gain

control

adjusts

the

audio

volume

of

the

receiver

output

in

the

speaker

or

headphones.

The

outer

RF

gain

control

adjusts

the

gain

of

the

receiver

RF

and

IF

amplifiers.

This

con-

trol

is

normally

set

fully

clockwise

for

maximum

sensitivity.

When

rotated

counter-

clockwise

from

maximum,

the

meter

minimum

le.

The

peak

deflection

for

a

particular

signal

will

remain

the

same

if

it is

greater

than

the

level

set

by

this

control,

but the

receiver

will

be

insensitive

to

weaker

signals.

This

control

also

affects

the

SQL

setting,

and

should

be

preset

fully

clockwise

when

setting

the

squelch

threshold.

deflection

point

will

move

up

the

(8)

2-Position

Pushbutton

Switches

VOX:

enables

automatic

voice-actuated

transmit/receive

switching

in

SSB,

AM

and

FM

modes;

semi

break-in

keying

in

CW

mode;

and

tone-actuated

transmit/receive

swit-

ching

in

FSK

mode.

This

button

must

be

pressed

together

with

the

Full

BK-IN

but-

ton

for

QSK

operation.

FULL

BK-IN:

activates

full

break-in

CW

(QSK)

on

the

hf

bands.

When

activated,

the

receiver

will

be

audíble

between

dits

and

dahs.

The

VOX

button

must

be

depres-

sed

for

this

switch

to

function.

PROC:

enables

the

rf

speech

processor

in

SSB

and

AM

modes.

Processing

level

is

set

by

the

control

with

the

same

name,

MONI:

enables

the

CW

sidetone

monitor

in

CW

mode,

and

the

transmit

(IF)

monitor

in

other

modes.

Volume

is

set

by

the

control

with

the

same

name,

TX

SHIFT:

enables

custom

setting

of

the

transmitter

IF

bandpass

in

SSB

modes,

using

the

control

of

the

same

name.

T

ENC:

activates

either

the

Burst

Tone

generator

(when

the

FTE-2

Burst

Unit

is

installed),

or

the

CTCSS

(subaudible)

tone

generator

on

FM

transmissions

when

the

optional

FTS-8

Tone

Squelch

Unit

is

installed.

NAR:

selects

narrow

IF

filtering

in

CW

and

AM

modes.

Narrow

AM

-6dB

bandwidth

is

2.7

kHz,

and

narrow

CW

is

600

Hz.

RF

AMP:

activates

the

receiver

front-end

RF

amplifier

for

extra

sensitivity

on

HF

bands,

when

needed.

ATT:

adds

a

20dB

attenuator

between

the

antenna

and

the

receiver

front

end

for

extra

immunity

to

overload

on

the

HF

bands,

when

needed.

The

'ATT'

indicator

LED

below

the

display

window

is

lit

when

this

button

is

depressed.

(9)

Pushbuttons

with

LED

Indicators

D

LOCK

(with

red

LED):

disables

the

tuning

knob

to

prevent

inadvertent

fre-

quency

changes.

MUTE

(with

yellow

LED):

disables

receiver

audio,

for

keeping

the

receiver

on

in

standby.

NB

(with

green

LED):

activates

the

noise

blanker.

APF

(with

green

LED):

activates

the

audio

peak

filter

(for

CW

reception).

NOTCH

(with

green

LED):

activates

the

IF

notch

filter.

(10)

Tuning

Knob

Controls

displayed

frequency

in

selectable

10

Hz

or

100

Hz

steps.

(11)

VDOWN

A

UP

PROGRAM

Keys

Tune

displayed

frequency

in

programmable

steps,

which

may

be

different

for

each

mode.

Pressing

and

holding

one

of

these

keys

for

more

than

one

half

second

activates

multiple

stepping

in

the

programmed

steps.

Steps

are

originally

preset

at

the

factory

to

5

kHz

for

all

modes.

(12)

SHIFT

-S

TONE

The

inner

SHIFT

control

allows

the

center

of

the

receiver

IF

passband

to

be

positioned

above

or

below

that

of

the

received

signal,

to

eliminate

interference

from

signals

on

adja-

cent

frequencies.

Normal

setting

is

the

12

o'clock

position.

The

outer

TONE

control

adjusts

receiver

audio

characteristics

in

all

modes.

(13)

BAND

/

MCH

Keys

Use

thes

keys

to

select

operating

frequency

band

or

memory

channel

(according

to

the

oper-

ating

status

selected

by

the

keypad).

The

key

on the

left

steps

down,

and

the

key

on

the

right

steps

up.

Press

and

hold

for

a

half

second

for

multiple

stepping.

In

General

Cov-

erage

mode,

steps

are

500

kHz.

In

Ham

mode,

steps

are

in

500

kHz

ham

band

segments.

If

the

FTS-8

Tone

Squelch

Unit

is

installed,

these

keys

also

select

tone

frequency.

(14)

NOTCH

-S-APF

The

inner

NOTCH

control

adjusts

the

frequency

of

the

IF

notch

within

the

receiver

passband

when

the

NOTCH

button

is

depressed,

except

in

the

FM

mode.

The

outer

APF

(Audio

Peak

Filter)

control

ad-

justs

the

frequency

of

the

filter

passband

during

CW

operation

when

the

APF

button

is

depressed.

Eu

E

=

(15)

FAST,

MIC

U/D

and

KEYER

pushbuttons

Press

the

FAST

button

to

select

coarse

tuning

steps

for

the

tuning

knob,

PROGRAM

DOWN

and

UP

keys,

microphone

up/down

keys;

and

PMS

(Programmable

Memory

Scan)

function.

When

this

button

is

pressed

the

10

Hz

digit

on

the

frequency

display

is

blanked.

The

MIC

U/D

key

selects

the

step

size

of

the

microphone

UP

and

DWN

keys

on

the

optional

scanning

microphone.

When

this

key

is

in

the

NOR

(undepressed)

position,

the

microphone

buttons

will

duplicate

the

tuning

steps

of

the

tuning

knob.

When

in

the

PROG

(depressed)

position,

microphone

tuning

steps

are

the

same

as

the

PROGRAM

DOWN

and

UP

keys.

The

KEYER

button

turns

the

internal

CW

keyer

on

and

off.

(16)

KEYER

9

PITCH

The

inner

KEYER

control

sets

the

speed

of

the

internal

CW

keyer.

The

outer

PITCH

control

is

a

3-position

switch,

selecting

600,

700

or

800

Hz

CW

car-

rier

offset

and

sidetone

pitch.

Set

to

the

most

comfortable

sidetone

frequency.

(17)

FUNCTION

Keypad

These

15

keys

each have

dual

functions:

the

default

function

labelled

on the

upper

half

of

each

key,

and

the

alternate

function

that

be-

comes

active

after

the

orange

key

is

pressed

(labelled

in

reverse

letters/symbols

on

the

lower

half

of

each

key).

Througiout

this

man-

val,

the

alternate

key

functions

will

be

indi-

cated

by

parentheses

()

following

the

default

function

name:

e.g.,

the

default

function

of

the

H/G

(ENT)

key

toggles

Ham/Gen

states,

while

the

alternate

function

ENTers

programmed

data

into

a

VFO

or

memory.

TRACK

(PD)

The

default

function

of

this

key

toggles

simultaneous

tracking

of

the

two

VFOs

(A

and

B),

so

that

when

the

frequency

of

one

is

changed,

the

frequency

of

the

other

changes

by

the

same

amount.

The

green

TRACK

indicator

below

the

display

lights

when

this

function

is

active.

This

is

convenient

for

tuning

repeater

sub-bands

where

the

repeaters

all

have

the

same

off-

set.

The

alternate

function

of

this

key

(right

arrow)

causes

the

blinking

display

digit

selected

for

keypad

frequency

entry

to

shift

one

place

to

the

right.

Keypad

frequency

entry

is

described

later

in

the

*Operation'

section.

PMS

(V/U)

The

default

PMS

(Programmable

Memory

Scan)

function

sets

memory

channels

as

the

limits

for

the

scanner,

when

activated

by

the

SCAN

button.

A

'P!

appears

in

the

CH

position

on

the

display

when

PMS

is

active.

The

alternate

V/U

function

selects

the

VHF

and

UHF

bands

(if

the

op-

tional

Band

Modules

are

installed),

and

multiple

presses

also

cause

the

blinking

display

digit

selected

for

frequency

entry

to

shift

one

place

to

the

left

(the

con-

verse

of

the

preceding

key,

not

labelled

on

this

key).

SCAN

(7)

The

default

SCAN

function

starts

the

scan-

ner,

scaming

either

the

VFO;

memory

chan-

nels

(if

the

memory

recall

(MR)

mode

is

active);

or

between

the

frequencies

stored

in

preset

adjacent

channels

(if

the

PMS

function

is

active).

The

alternate

func-

tion

enters

the

digit

7

in

place

of

the

blinking

display

digit

selected

for

fre-

quency

entry.

MpP-VFO

(8)

The

default

function

transfers

the

data

stored

in

the

selected

memory

to

the

sel-

ected

VFO,

overwriting

previous

VFO

data.

The

alternate

function

enters

the

digit

8

in

place

of

the

blinking

display

digit

selected

for

frequency

entry.

vFODM

(9)

The

default

function

transfers

the

data

stored

in

the

selected

VFO

to

the

selected

memory

channel,

overwriting

previous

mem-

ory

channel

data.

The

alternate

function

enters

the

digit

9

in

place

of

the

blin-

king

display

digit

selected

for

frequency

entry.

VFO

AB

(CE)

The

default

function

causes

exit

from

mem-

ory

mode

to

a

VFO,

or

the

alternate

VFO

(A

or

B)

to

be

selected.

The

currently

sel-

ected

VFO

or

memory

is

indicated

on

the

display.

The

alternate

"Clear

Entry!

function

is

enabled

only

after

keying

in

other

digits

on

the

keypad,

before

pres-

sing

the

(ENT)

key:

the

entered

digits

are

cleared,

and

the

blinking

display

digit

is

reset

to

the

far

left

so

that

you

can

reenter

data.

FUNC

(T

SET)

(Orange

Key)

This

is

the

special

key

that

activates

(with

one

push)

the

alternate

functions

of

all

other

keys.

If

this

key

is

pressed

twice

in

succession,

the

subaudible

tone

frequencies

for

the

(optional)

FTS-8

Tone

Squelch

Unit

can

be

selected

by

the

BAND/MCH

keys.

MR

(4)

The

default

function

causes

exit

from

the

VFO

mode

and

recalis

the

last-used

memory

channel

(indicated

to

the

right

of

the

operating

frequency

on

the

display).

The

alternate

function

enters

the

digit

4

in

place

of

the

blinking

display

digit

selec-

ted

for

keypad

frequency

entry.

SPLIT

(5)

When

operating

on

a

VFO,

the

default

func-

tion

causes

the

other

VFO

frequency

to

become

the

transmitting

frequency,

while

the

displayed

VFO

then

serves

as

receive

frequency

only.

The

alternate

function

enters

the

digit

5

in

place

of

the

blin-

king

display

digit

selected

for

frequency

entry.

VFO

BaM

(6)

The

default

function

exchanges

the

memory

and

mode

of

the

selected

VFO

with

the

memory

and

mode

of

the

selected

memory

channel.

No

data

is

overwritten.

The

alternate

function

enters

the

digit

6

in

place

of

the

blinking

display

digit

selec-

ted

for

frequency

entry.

H/G

(ENT)

The

default

function

toggles

the

selected

VFO

between

Ham

bands

and

General

Coverage

on

HF.

When

General

Coverage

is

selected

the

green

LED

beneath

the

display

window

is

lit.

The

alternate

(ENT)

function

causes

whatever

digits

have

been

selected

by

the

numeric

keys

and

displayed

(with

one

digit

blinking)

to

be

entered

into

the

VFO,

at

which

time

operation

shifts

to

the

new

frequency

and

the

functions

of

all

keypad

keys

return

to

their

default

states.

Once

the

orange

FUNC

key

is

pres-

sed,

this

key

must

be

pressed

to

return

the

display

and

keypad

to

normal

(default)

operation.

AC

(0)

The

default

function requires

two

presses

of

this

key

in

succession,

and

cancels

clarifier

and/or

split

ofísets.

The

al-

ternate

function

enters

the

digit

O

in

place

of

the

blinking

display

digit

selec-

ted

for

frequency

entry.

CLAR

(1)

The

default

function

toggles

the

clarifier

on

and

off,

which

causes

the

transmit

fre-

quency

to

remain

fixed

while

the

tuning

knobs

and

buttons

control

only

the

recei-

ving

frequency.

Note

that

once

a

clarifier

offset

is

tuned,

it is

stored

in

a

special

memory

even

when

this

key

is

used

to

turn

the

clarifier

off

(only

the

'AC!

key

erases

the

clarifier

memory).

The

alter-

nate

function

of

this

key

enters

the

digit

1

in

place

of

the

blinking

display

digit

selected

for

frequency

entry.

MCK

(2)

The

default

(memory

check)

function

allows

display

of

the

contents

of

the

memory

channels

without

disturbing

operation.

When

this

key

is

pressed

the

MR

indicator

at

the

left

of

the

display

and

the

CH

indicator

at

the

right

of

the

display

both

blink.

The

contents

of

each

memory

chan-

nel

can

be

checked

by

pressing

the

BAND/MCH

keys

to

step

through

the

memo-

ries.

Press

this

key

again

to

return

the

display

to

normal.

The

alternate

function

enters

the

digit

2

in

place

of

the

blin-

king

display

digit

selected

for

frequency

entry.

OFFSET

(3)

When

the

clarifier

or

split

operation

is

active,

the

default

function

of

this

key

causes

the

difference

between

the

transmit

and

receive

frequencies

to

be

displayed

(with

a

preceeding

!-'

if

the

transmit

frequency

is

lower).

Press

this

key

again

to

return

the

display

to

normal.

The

al-

ternate

function

enters

the

digit

3

in

place

of

the

blinking

display

digit

sel-

ected

for

frequency

entry.

(18)

ANTENNA

TUNER

TUNER

Pushbutton

This

switch

places

the

antenna

tuner

in

the

line

between

the

transmitter

and

the

HF

antenna

(the

receiver

comection

to

the

antenna

is

unaltered).

When

depressed,

the

tuner

status

is

indicated

in

the

win-

dow

above

the

switch:

READY

(green)

indicates

the

tuner

is

matched

and

ready

for

transmission.

WAIT

(yellow)

indicates

the

tuner

is

readjusting

itself.

Wait

until

the

READY

indicator

lights

before

trans-

mitting.

WARN

(red)

indicates

the

tuner

cannot

match

the

antenna

to

a

low

enough

SWR.

Check

the

antenna

and

feedline

for

a

problem.

START

Momentary

Pushbutton

This

pushbutton

causes

the

antenna

tuner

to

readjust

itself

for

minimum

SWR.

The

transmitter

must

be

sending

a

steady

car-

rier

while

the

antenna

tuner

is

readjus-

ting

itself.

(19)

DIGITAL

SWR,

RF

PWR

Pushbuttons

These

momentary

buttons

toggle

the

digital

SWR

and

wattmeter

functions

of

the

display

on

and

off.

Transceiver

operation

is

not

disturbed.

The

selected

function

is

indicated

by

'SWR!

or

*W'

(watts)

to

the

right

of

the

displayed

par-

ameter.

(20)

MODE

Selector

Pushbuttons

These

six

momentary

buttons

select

the

oper-

ating

mode

of

emission.

(21)

Display

The

diagram

below

shows

the

various

segments

of

the

display.

(22)

CAT

ATT

TRACK

GENLEDs

These

indicators

glow

when

their

respective

functions

are

active:

CAT

=

external

control

via

the

CAT

System,

ATT

=

HF

frontend

receiver

attenuator,

TRACK

=

VFO

A/B

tracking

tuning,

GEN

=

General

Coverage.

(23)

ON

AIR

and

BUSY

LEDS

The

red

ON

AIR

indicator

glows

while

transmit-

ting.

The

green

BUSY

indicator

glows

when

the

main

squelch

is

open

while

receiving.

(24)

-Multimeter

The

meter

indicates

either

relative

received

signal

strength

(S

scale)

or

FM

discriminator

center

tuning

(DISC

scale)

while

receiving;

and

relative

transmitter

power

output

(PO

scale),

final

transistor

current

(IC

scale),

transmitter

automatic

level

control

(ALC

scale),

or

speech

processor

compression

level

(COMP

scale)

while

transmitting.

Also,

the

VCC

scale

may

be

used

to

check

power

supply

voltage

(at

the

final

transistors),

at

any

time.

ends

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