Yaesu FT-480R User manual

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INSTRUCTION

/

MANUAL

FT-4S0R

For

Service

Manuals

Contact

MAURITRON

TECHNICAL

SERVICES

8

Cherry

Tree

Rd,

Chinnor

Oxon

OX9

4QY

Tel:-

01844-351694

Fax:-

01844-352554

Email:-

[email protected]

YAESU

MUSEN

CO.,

LTD.

TOKYO

JAPAN

TABLE

OF

CONTENTS

(Page)

GENERAL

DESCRIPTION”

(5.4

scent

bo

atd

tigeaeerea

hl

iatiebeae

sees

(1)

SPECIFICATIONS

cc

5.27.

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SEMICONDUCTORS/ACCESSORIES

2.0.00.

00.00

cece

eee

ee

tee

eee

e

tenets

(

3)

FRONT

PANEL

CONTROLS

AND

SWITCHES

..........02-00

20000

e

eee

serene

(4)

REAR

PANEL

CONNECTIONS

AND

SWITCHES

...........00

20020000

e

cence

eee

(

6)

UNDER’

CABINET

‘SWITCHES

§.....

¢.duecaed

¢eoo

eve

eee

eect

ea

eb

eteee

ee

(7)

INS

TAL

TATION:

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2

0

tes

comissae

Atle

lM

Sut

OR on

aectue

tog

seis

huanattee

dattcga

gietee

(8)

OPERATION

wo

isclooc

Glee

pened

5g

ree

te

reaN

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Geacaey

lt

eects

Stele

(10)

CIRCUTE

DESCRIPTION

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ae

8

(14)

MAINTENANCE

AND

ALIGNMENT

...........00-0

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e

eee

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(18)

PARTS

DIST

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sos

lS

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ee

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ek

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Rae

Aah

tee

ene

ee

tech

(28)

FT—480R

MICROPROCESSOR

CONTROLLED

2

METER

ALL—MODE

TRANSCEIVER

GENERAL

DESCRIPTION

The

FT-480R

is

a

revolutionary.

high

performance

USB.

LSB.

FM,

and

CW

transceiver

for

the

most

demanding

2-meter

operator.

Controlled

by

a

NMOS

4-bit

microprocessor,

the

FT-480R

features

full

PLL

synthesis

in

10

Hz.

100

Hz,

|

kHz.

20

kHz

(US

model),

and

100

kHz

steps.

The

extremely

compact

size

of

the

FT-480R

makes

this

model

particularly

well

suited

for

mobile

use.

The

microprocessor

chip

allows

never-before-possible

operating

flexibility.

As

many

as

four

memory

channels

may

be

programmed

to

your

favorite

frequencies,

and

by

switching

to

the

MEMORY

SCAN

position,

all

four

memory

channels

will

be

scanned.

Digital

display

of

the

operating

frequency

is

provided.

The

front

panel

meter

consists

of

a

string

of

bright

LED’s,

for

easy

monitoring

of

the

received

signal

strength

and

transmitter

output.

The

standard

microphone

features

a

PIT

switch

and

up/down

scanning

controls

plus

a

tone

call

button

for

repeater

operation.

Among

the

convenience

features

of

your

FT-480R

are

receiver

offset

tuning

for

CW

and

SSB,

and

a

digitally

synthesized

dual

VFO

system.

We

recommend

that

you

read

this

manual

in

its

entirety,

so

as

to

derive

maximum

benefit

from

your

new

FT-480R,

an

exciting

breakthrough

from

the

communications

experts

...

Yaesu,

For

Service

Manuals

Contact

MAURITRON

TECHNICAL

SERVICES

8

Cherry

Tree

Rd,

Chinnor

Oxon

OX9

4QY

Tek:-

01844-351694

Fax:-

01844-352554

Email:

[email protected]

SPECIFICATIONS

GENERAL

Frequency

coverage:

*143.500—148.500

MHz

Modes

of

operation:

SSB

(USB,

LSB),

CW,

and

FM

Synthesizer

steps:

SSB,

CW

*FM

10

Hz,

100

Hz,

|

kHz

1

kHz,

20

kHz,

100

kHz

Power

requirements:

13.8

volts

DC,

negative

ground

Current

consumption:

DC

0.5

amps

receive

DC

3.0

amps

transmit

Antenna

impedance:

50

ohms

Case

size:

60

(H)

x

180

(W)

x

240

(D)

mm

Weight:

Approx.

2.9kg

TRANSMITTER

Power

input:

SSB

30

watts

PEP

FM/CW

30

watts

DC

Carrier

suppression:

Better

than

40

dB

Unwanted

sideband

suppression:

Better

than

40

dB

Spurious

emission

(SSB):

At

least

60

dB

down

Frequency

response:

300—2700

Hz

(—6

dB)

FM

Deviation:

+5

kHz

Microphone

impedance:

600

ohms

RECEIVER

Sensitivity:

SSB,

CW

0.5

nV

for

20

dB

S/N

FM

0.35

uV-for

20

dB

QS

Selectivity:

SSB,

CW

2.4

kHz

at

6

dB

down

4.1

kHz

at

60

dB

down

FM

14

kHz

at

6

dB

down

25

kHz

at

60

dB

down

Image

response:

Better

than

—60

dB

Audio

output

impedance:

8

ohms

nominal

Audio

output:

2.0

watts

@

10%

THD

*

USA

Model

(Model

A)

|

Frequency

Synthesizer

Steps

(Hz)

Model

Range

SSB,

CW

FM

(MHz)

ious

erecta

S

143.5—

A

148.5

10

|

100

\K

144.0—

B

146.0

10

100

1K

IK

143.5-

c

148.5

Uae

i

a

|

1K

1K

12.5K

1750

|

{IK

{kK

12.5K

eee

FT-480R

Model

Chart

—-9Q-

ICs:

MC1496G

MCI4011B

MC14560B

MC14028B

MC14069B

MC14002B

uAT8LOS

puPC7808H

uPC577H

uPC1037H

uPC2002V

uPC7805H

uPD4094B

uPD1511-11

TC9122P

TC5081P

TCS5082P

SN16913P

SN76514N

HD10551

MB87i8A

TA7612AP

FETs:

2SKI9TMY

I

DARwWH

SEMICONDUCTORS

2SKI9TMGR

3

2SK30AY

2SK51

3SKS59Y

]

3SK70

3SK73Y

8

Transistors:

2SATISC

2SA733P/Q

2SC535A

2SC535B

2SC732TMBL

2SC945P

2SC945Q

2SC945K

2SC1383R

2SC1583

28C1674L

2SC1815Y

2SC181SGR

2S8C1945

28C2002L

2802053

2SC2166

2SC2785E

ww

i)

see

Wn

OH

—

eet

re

OD

ON

tO

—

MPSAI3

Diodes:

1S188FM

1$1007

181555

182209

U05B

1SS53

10D]

MV104

HZ11B-1

LEDs:

TLG-205

TLR-205

TLR-226

TLY-226

TLG-226

FCD:

LD8231/F1P9C5

tJ

Ne}

—

rhe

|

Pe

BR

oO

_—

Mm

ty

WY

to

to

Specifications

subject

to

change

without

notice

or

obligation.

For

Service

Manuals

Contact

MAURITRON

TECHNICAL

SERVICES

8

Cherry

Tree

Rd,

Chinnor

Oxon

OX9

4QY

Tel:-

01844-351894

Fax:-

01844-35254

Email:-

[email protected]

ACCESSORIES

Microphone

Power

Cord

Spare

Fuses

(5A)

Stand

Miniature

Phone

Plug

Mobile

Mounting

Bracket(RO062900)

1

ea.

TONE

IN

Connector

(M3090028)

1

ea.

(T9002805)

|

ea.

(Q0000005)

2

ea.

(ROO62300A)

1

ea.

(P0090034)

2ea.,

(P0090174)

Lea.

FRONT

PANEL

CONTROLS

AND

SWITCHES

ven

ee

mao

cian

1

+.

3

9

@

OVER

eeeeseooose

seo

;

Yansu_7-a50n

The

FT-480R

has

been

designed

for

ease

of

opera-

tion.

However,

the

operator

may

not

be

familiar

with

some

controls

since

the

FT-480R

utilizes

modern

computer

technology.

Be

sure

you

thor-

oughly

understand

the

function

of

each

control

and

indicator

before

operating

this

equipment.

(1)

SQL

The

squelch

control

quiets

the

receiver

in

the

absence

of

a

signal

on

FM.

It

should

be

set

to

the

point

where

the

background

noise

just

disappears,

in

order

to

provide

maximum

sensitivity.

(2)

VOL

This

control

is

the

main

ON/OFF

switch

for

the

transceiver,

and

it

also

sets

the

audio

output

level

to

the

speaker.

Clockwise

rotation

increases

the

audio

output

level.

(3)

STEP

The

3

positions

of

this

switch

control

the

tuning

rate

of

the

Main

dial,

as

shown

in

Table

1.

MAIN

DIAL

FREQUENCY

STEP

SWITCH

COVERAGE

PER

STEP

POSITION

—_—-.-

SSBICW

|

OFM

=

Se

S

1OHz

=}

1

kHz

M

100

Hz

#90

kHz

F

|

kHz.

*100

kHz

Table

1

*

USA

Model

(Model

A)

y)

ee

a

6)

®

@

(4)

MEMORY

This

switch

selects

the

MS

mode

(Memory

Scan)

or

one

of

the

four

frequencies

that

the

operator

has

programmed

into

memory.

Memory

scan

control

is

exercised

via

the

UP/DOWN

switches

on

the

microphone.

(5)

MAIN

TUNING

KNOB

The

tuning

knob

is

used

to

control

the

receive

and

transmit

frequencies

over

the

entire

2

meter

amateur

band.

It

is

activated

when

the

DIL

button

is

pushed.

When

the

transceiver

is

initially

turned

on,

the

display

will

indicate

[47.000.0

MHz,

and

the

dial

may

be

turned

from

that

point

to

the

desired

operating

frequency.

(6)

MODE

This

switch

selects

the

mode

of

operation:

USB

(upper

sideband),

LSB

(lower

sideband),

CW

(code

operation),

and

FM

(frequency

modulation).

This

switch

also

selects

the

FM

_

transmitting

frequency.

:The

transmitting

frequency

is

600

KHz

lower

than

the

receive

frequency.

SIMP

:

Simplex

operation.

+

:

The

transmitting

frequency

is

600

KHz

higher

than

the

receive

frequency.

(7)

MIC

The

MIC

jack

is

used

for

microphone

input,

PTT

control,

and

scanner

control

lines.

(8)

S/PO

A

string

of

LEDs

provides

indication

of

signal

strength

and

relative

power

output.

(9)

ON

AIR

This

indicator

lights

up

during

transmission.

(10)

BUSY/MOD

This

indicator

has

a

dual

function:

it

will

light

up

when

the

channel

is

occupied,

or

indicate

modula-

tion

during

FM

transmissions.

(11)

CLAR

Indicator

This

lamp

lights

when

the

clarifier

switch

is

pushed.

(12)

LOW

This

lamp

lights

when

the

HI/LOW

switch

is

in

the

LOW

position.

(13)

Digital

Display

The

digital

display

indicates

the

operating

fre-

quency.

In

the

priority

mode,

the

character

“‘P”

will

be

illuminated

at

the

far

right-hand

side

of

the

window.

Also,

the

memory

channel

in

use

will

be

indicated

for

easy

frequency

reference.

(14)

T.CALL

When

this

switch

is

pushed,

the

PTT

line will

close,

and

a

1750

Hz

or

1800

Hz

tone

will

be

transmitted

for

accessing

repeaters.

(15)

CLAR

The

clarifier

switch

allows

+10

kHz

offset

of

the

receive

frequency

from

the

dial

or

memory

fre-

quency.

Clarifier

tuning

is

accomplished

via

the

main

tuning

dial.

When

the

CLAR

switch

is

pushed,

the

scanning

step

selector

should

be

set

to

10

Hz

or

100

Hz;

if

not,

control

will

be

returned

to

the

main

dial,

with

the

clarifier

being

disabled.

(16)

M

(Memory)

This

switch

is

used

for

programming

a

frequency

into

memory.

(17)

VFO

A/B

TXA

This

switch,

when

pressed,

allows

split

operation

using

the

two

internal

VFOs.

(18)

PRI

While

operating

in

the

dial

tuning

mode,

the

PRIORITY

switch

allows

scanning

of

the

main

dial

and

one

of

the

memorized

frequencies

every

5

seconds.

The

SCAN

switch

controls

the

stopping

of

the

scanner

on

a

busy

or

clear

channel.

(19)

F.SET

This

switch,

when

pressed,

clears

all

digits

of

the

operating

frequency

below

the

step

frequency

you

are

using.

(20)

HI/LOW

This

switch,

when

pressed,

reduces

the

transmitter

power

from

10

watts

to

1

watt

RF

output.

(21)

MR

(Memory

Recail)

This

button

transfers

frequency

control

from

the

main

dial

to

the

memory

channels.

(22)

NB

(Noise

Blanker)

This

switch,

when

pressed,

activates

the

noise

blanker

for

minimizing

pulse-type

noise.

(23)

DIL

(Dial)

This

switch,

when

pressed,

transfers

frequency

control

from

the

memory

channels

to

the

main

tuning

dial.

YM-40

MICROPHONE

CONNECTIONS

REAR

PANEL

CONNECTIONS

AND

SWITCH

For

Service

Manuals

Contact

MAURITRON

TECHNICAL

SERVICES

(1)

ANT

Cherry

Tree

Rd,

Chinnor

=:

(6)

POWER

bce

z

Oxon

OX9

4QY

.

This

is

the

main

antenna

connectetro1844-351694

Fax:-

01844-252554

This

receptacle

accommodates

the

power

cord.

A

Email:

enquines@maurironcouk

fice

rated

at

5

amps

is

located

in

the

power

cord.

(2)

TONE

IN

CONNECTOR

This

connector

is

provided

for

the

optional

exter-

|

nal

FTS-64E

Tone

Encoder,

which

synthesizes.

[

WARNING

32

CTCSS

or

tone

burst

frequencies.

WHEN

REPLACING

FUSES,

BE

CERTAIN

TO

USE

A

FUSE

OF

5

AMP

RATING.

(3)

KEY

OUR

WARRANTY

DOES

NOT

COVER

This

is

the

key

jack

for

CW

operation.

The

key-up

th

Sa

a

Be

PS

Or

ae

voltage

is

3.5

V,

while

the

key-down

current

is

L

;

|

approximately

|

mA.

(4)

EXT

SP

ofr

Ig

This

is

a

miniature

phone

jack

for

connection

to

an

external

speaker.

Insertion

of

a

plug

into

this

jack

automatically

cuts

off

the

internal

speaker.

(5)

BACKUP

When

this

switch

is

placed

in

the

ON

position,

and

DC

power

is

still

connected

to

the

POWER

con-

nector,

the

memory

circuit

will

still

be

held

in

EXTERNAL

SPEAKER

CONNECTIONS

operating

condition.

If

DC

power

is

removed,

though,

the

memorized

frequency

will

be

lost.

TX

TONE

INPUT

(approx.0.35

V)

+13V

BURST

INPUT

(approx.

0.2

V)

TONE

IN

CONNECTOR

KEY

CONNECTIONS

UNDERSIDE

CABINET

SWITCHES

(1)

SAT

(Satellite)

This

switch

allows

the

operating

frequency

to

be

changed

while

transmitting.

This

feature

is

useful

especially

for

satellite

operation,

for

it

allows

the

operator

to

zero

on

the

proper

frequency

within

the

satellite

passband.

Neither

VFO

A/B

TXA

nor

the

CLARIFIER

function

works

when

the

SAT

switch

is

placed

in

the

ON

position.

(2)

SCAN

This

switch

will

select

scanning

stop

on

a

busy

or

clear

channel

in

the

FM

mode.

Manual

scanning

“

“ies

:

stop

is

also

provided

on

all

modes.

HAI

-

o

(3)

BURST

ai

o

The

BURST

switch

applies

a

short

“‘tone

burst”

to

oa

ae

the

carrier

at

the

start

of

each

transmission

in

the

Oo:

:

“ON”

position.

This

is

normally

used

only

for

“tone

access”’

repeater

actuation.

CAUTION

THE

WIRE

STAND

SHOULD

BE

INSERTED

IN

THE

MOUNTING

HOLES

ON’

THE

BOTTOM

COVER

IN

ORDER

TO

PREVENT

DAMAGE

TO

THE

SWITCHES

ON

THE

COVER.

|

BLACK

SS

=,

FUSE

HOLDER

POWER

CORD

CONNECTIONS

INSTALLATION

ANTENNA

CONSIDERATIONS

The

FT-480R

is

designed

for

operation

using

an

antenna

presenting

a

50

ohm

resistive

load.

The

automatic

final

transistor

protection

circuitry

will

reduce

the

power

output

to

protect

the

transistors

when

a

high

antenna

SWR

is

encountered.

The

SWR

on

the

antenna

should,

if

possible,

be

kept

below

1.5

:

1

at

all

times

to

secure

full

output

from

the

transceiver.

In

most

cases,

coverage

is

a

function

of

antenna

height.

The

antenna

for

base

station

operation

should

be

located

as

high

and

in

the

clear

as

possible.

Vertical

polarization

is

standard

for

FM

communications

in

most

areas,

so

be

sure

that

your

antenna

is

oriented

appropriately.

Popular

anten-

nas

for

base

station

use

include

the

5/8

wavelength

vertical

or

one

of

the

many

stacked

dipole

arrays.

For

accessing

repeaters

a

long

distance

away,

a

Yagi

or

other

high

gain

directional

array

may

be

required.

For

mobile

applications,

the

most

popular

anten-

nas

are

the

1/4

wavelength

vertical

and

the

5/8

wavelength

vertical,

which shows

approximately

3

dB

gain

over

the

1/4

wavelength

vertical.

Do

not

economize

on

coaxial

cable,

as

much

power

can

be

wasted

in

lossy

transmission

line.

For

mobile

use,

the

RG-58A/U

type

of

coax

may

be

used.

To

minimize

loss,

use

the

shortest

length

that

is

possible.

For

base

stations,

use

type

RG&A/

U

coaxial

cable.

For

very

long

runs,

type

RGI7A/U,

aluminum-jacketed

‘‘foamflex”

coax,

or

air

dielectric

“‘heliax”’

cable

may

be

used.

The

optional

antenna

duplexer

AD-1!

allows

the

MOBILE

INSTALLATION

For

mobile

service,

the

FT-480R

should

be

in-

stalled

where

the

digital

display,

controls,

and

microphone

are

easily

accessible

for

operation.

The

transceiver

may

be

installed

in

any

position

without

loss

of

performance.

A

suitable

location

would

be

atop

the

transmission

tunnel.

A

universal

bracket

is

supplied

with

your

transceiver

for

mobile

installation.

Refer

to

Fig.

|

for

mounting

details.

1.

Use

the

universal

mounting

bracket

as

a

template

for

positioning

the

mounting

holes.

Use

a

3/16”

diameter

bit

for

drilling

these

holes,

allowing

clearance

for

the

transceiver,

its

cables

and

microphone,

and

its

controls.

Secure

the

mounting

bracket

with

the

screws,

washers,

and

nuts

supplied,

as

shown

in

the

drawing.

Ease

the

transceiver

into

the

guide

rail,

and

slide

it

into

the

desired

position.

Tighten

the

knobs

on

the

outside

of

the

universal

bracket

to

secure

the

transceiver.

The

microphone

hanger

may

be

installed

wherever

convenient

for

access

to

the

micro-

phone.

Power

connections

should

be

made

directly

to

the

automobile

battery.

Routing

through

the

cigarette

lighter

may

cause

the

lighter

fuse

to

blow

if

the

fuse

is

not

of

sufficient

rating.

As

well,

connection

directly

to

the

battery

allows

the

memory

circuits

to

remain

activated

when

the

ignition

is

turned

off,

using

the

BACKUP

switch.

operation

on

both

50

and 144

MHz

using

a

single

For

Service

Manuals

Contact

antenna

(RSL-50

or

RSL145).

See

your

Yaesu

dealer.

50/I44MHZ

ANTENNA

ANT

OUPLEXER

YAESU

AD-I

MAURITRON

TECHNICAL

SERVICES

8

Cherry

Tree

Rd,

Chinnor

Oxon

OX9

4QY

Tek:-

01844-351694

Fax:-

01844-352554

Email:-

[email protected]

AD-1

ANTENNA

DUPLEXER