Kenwood TH-225A Manuale utente

ПООЛ\МАЗЯ

144MHz

TRANSCEIVER

TH-225A

INSTRUCTION

MANUAL

KENWOOD

CORPORATION

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RadioAmateur.EU

CPRINTED

JAPAN

B50-8334-00(K,

PIT)

9012110987854321

89/21110

‘Thank

you

for

purchasing

this

new

transceiver.

IMPORTANT

Please

read

this

instruction

manual

carefully

before

placing

your

transceiver

service.

SAVE

THIS

INSTRUCTION

MANUAL.

Under

normal

circumstances,

the

transceiver

will

operate

accordance

with

these

operating

instructions.

The

tran-

sceiver

was

preset

the

factory

and

should

only

read-

justed

qualified

technician

with

proper

test

equipment.

Attempting

service

alignment

without

factory

authoriza-

tion

can

void

the

transceiver's

warranty.

CAUTION:

Long

transmission

extended

operation

tho

watt

mode

might

‘cause

the

rear

this

transceiver

get

warm.

not

place

tho

transceiver

where

the

heat

sink

(rear

panel)

might

come

contact.

with

plastic

vinyl

surfaces.

Use

external

antenna

for

fixed

station

recommended.

FCC

WARNING:

This

equipment

may

generate

use

radio

frequency

ener-

ду.

Changes

modifications

this

equipment

may

cause

harmful

interference

unless

the

modifications

are

express-

approved

the

instruction

manual.

The

user

could

lose

the

authority

operate

this

equipment

unauthorized

change

modification

made.

CONTENTS

ACCESSORIES

SPECIFICATIONS

BATTERY

PACK

Ni-Cd

battery

Recharging

the

battery

pack

Manganese/Alkaline

batteries

Operating

time

CONTROLS

AND

FUNCTIONS.

OPERATION.

Receive

Transmit

Frequency

selection

Repeater

operation

Transmitter

offsets

Reverse

function

Tone

operation

‘Auto

patch

operations

...

Scan...

Beep

tone

Memory

...

Memory

channels

Memory

entry

Memory

recall

Odd

Split

memory

channel.

Memory

channel

lockout

Clearing

specific

memory

channel

Clearing

all

memories.

Memory

back-up

battery

Priority

alert

channel

check

Battery

saver

MAINTENANCE........

case

difficulty

Service

OPTIONAL

ACCESSORIES...

Programmable

tone

decoder

unit

TSU-4

BLOCK

DIAGRAM..........—.

SCHEMATIC

DIAGRAM

ACCESSORIES

Unpack

your

transceiver

carefully

and

cor

that

itis

sup-

plied

with

the

following

accessories.

Antenna

for

144

MHz.....T90-0352-05,

Rubber

cap..

Belt

Ноок.........

Machine

Screw

Spring

washer.

Ni-Cd

Battery

pack

(РВ-12)..........

-W09-0541-05..

Battery

charger

(120

..W09-0517-05

cable

(PG-2V)

Е30-2078-25

Instruction

Manual

.........850-8334-XX

Warranty

Card...

Ré

SPECIFICATIONS

FREQUENCY

RANGE

(Mb

чакооо-—

таз:

MODE

[377

OPERATING

TEMPERATURE

EIN

ANTENNA

IMPEDANCE

ET)

POWER

REQUIREMENT

BATTERY

PARK

V-15

VOC

(12

VOC

запі

DCN

V=16

VOC

013:8

VDC

nominal)

DTRASWTMODE

возм

Less

than

13A

[Low

mansur

море

noa

Lees

thn

0.7

[теме

mone

ите

cna

Apoc

BATTERY

SAVER

MODE

А.Т

Арек

DIMENSIONS

СТГ

ИН

DITE

(PROJECTIONS

CLUDED)

70%

198%

imm

жент

With

Ме

Са

batter

and

апы

OUTPUT

POWER

зво

[win

PET

With

РВ-2

With

Раз

PEE

[mouar

—

[

MAXIMUM

EREGUENCY

DEVIATION

SPURIOUS

RADIATION

L'oncumv

DOUBLE

CONVERSION

SUFERHETERGOYRE

INTERMEDIATE

FREQUENCY

reg

тєзмнє

ЕТТ

sms

—

1248

SAD

‘oe

than

0217

saveton

sensu

Lane

than

0.1

захотите

Moe

than

Lose

than

24H

‘AUDIO

OUTPUT

POWER

lass

oad

10%

dto

Mor

than

800

NOTE:

Circuit

and

ratings

are

subject

change

without

notice,

due

development

technology.

Downloaded

RadioAmateur.EU

ВАТТЕВҮ

РАСК

Installing

the

battery

pack

Match

the

concave

part

the

bottom

the

radio

the

convex

part

the

top

the

battery

pack.

Turn

the

battery

pack

clock-

wise

until

clicks.

sure

the

pack

and

trans-

ceiver

are

locked

together.

Pressing

the

battery

release

button,

turn

the

battery

pack

counterclockwise.

Ni-Cd

BATTERY

PACK

(РВ-12)

quire

several

charge/discharge

cycles

before

you

can

expect

see

ing

period

between

charges.

the

battery

will

than

months

should

recharged

before

RECHARGING

THE

BATTERY

PACK

Insert

the

charge

plug

from

the

supplied

Battery

Charger

into

the

receptacle

the

rear

the

battery

pack.

Then

plug

the

Charger

into

the

line.

The

LED

the

Charger

wil

iluminate

show

that

the

pack

charging.

The LED

will

remain

эв

long

the

Charger

connected

the

power

source

and

the

battery,

indicating

that

the

pack

still

being

charged.

not

allow

the

battery

charge

for

greater

than

hours.

The

useful

Ме

and

battery

performance

will

reduced

you

exceed

the

recommended

charge

period.

NOTES:

————

Turn

off

the

power

switch

before

charging

Recharging

should

ап

ambient

temperature

bet-

ween

10°C

40°C

(50°

Р).

Recharging

performed

out

this

range

fully

charge

the

battery.

MANGANESE

ALKALINE

BATTERIES

Load

(AA)

manganese

alkaline

batteries

series

the

sup-

plied

battery

case.

(Be

sure

ob-

serve

the

polarities.)

(We

recommend

‘use

high-

perfomance

manganese

batteries.)

Battery

pack

(1)

can

inserted

the

case

(2)

only

specific

direction.

Check

the

shape

(top

and

bottom)

after

moving

the

stopper

the

rear

side,

then

insert

the

battery

correctly.

Inserting

the

battery

force

without

checking

the

shape

may

damage

the

case.

OPERATING

TIME

Bart

vote

resin.

Е,

үсе

АҒ

OUTPUT.

0.35

wis

ааа

Туена

argen

ШД

55 59

Tus

zip

Manganese

battery

(except

Alkaline

manganese

battery)

suitable

only

for

LOW

power

transmission.

harge

the

Ni-Cd

battery

pack

when

the

BATT

indicator

on.

recommend

use

the

PB-3

PB-4

Ni-Cd

battery

pack

for

long

transmission

extended

operation.

CONTROLS

AND

FUNCTIONS

Antenna

connector

‘This

jack

used

connect

the

supplied

antenna.

Twist

lock

with

the

BNC

connector.

(2)

terminal

This

terminal

used

for

external

power

supply.

Input

voltage

13.8

VOC

nominal.

The

center

the

(+)

side

and

the

sleeve

(—)

side.

You

should

turn

the

power

switch

OFF

when

connecting

this

terminal,

Pay

attention

the

polarity.

®-®)

CAUTION:

—

——

Asa

precaution,

not

remove

the

bat-

tery

pack

when

external

power

sup-

ply

used.

Use

the

KENWOOD

PG-2V

ог

PG-3E

optional

cable

for

the

con-

i]s

MIC

jack

This

jack

used

for

connection

external

microphone.

The

use

electret

type

microphone

recommended.

Input

impedance

КЇ

and

the

voltage

this

terminal

isav.

(3)

jack

This

jack

used

for

earphone

external speaker.

The

recommended

impedance

nominal.

TONE

switch

This

switch

used

activate

the

sub-audible

tone

encoder.

нж

YLOW

(

)switch

This

switch

used

select

the

transmit

output

power.

SQL

control

The

SQL

control

used

eliminate

noise

during

signal

periods.

Normally,

this

control

adjusted

clockwise

until

the

noise

just

disappears

and

the

BUSY

indicator

goes

OFF

(Threshold

level).

For

scan

operation,

this

control

must

set

the

threshold

point.

When

incoming

signal

weak

unstable,

readjust

the

squelch

for

optimum

reception.

For

tone

squelch

operation

with

TSU-4,

this

control

must

set

the

T.SQ

position

(8)

VOL

control

Volume

control

with

power

ON/OFF

switch.

(8)

MONITOR

switch

Pressing

this

key

will

open

squelch.

PTT

(Push

Talk)

switch

For

transmission,

press

this

switch

and

speak

into

the

microphone.

RELEASE

button

Used

release

the

battery.

Depress

this

button,

and

turn

the

battery

counterciock

LAMP

key

controls

the

lamp

the

LCD

display.

OFFSET/F

key

‘The

OFFSET/F

key

used

select

the

desired

transmitter

offset

for

repeater

operation.

Each

time

the

key

pressed,

‘the

mode

cycles

from

shift,

—

shift,

simplex,

and

back

shift.

When

the

offset

function

ON,

the

sym-

bol

+”

“=”

displayed.

Pressing

the

and

the

OFFSET/F

key

order

change

the

desired

offset

frequency.

R/TONE.

key

This

key

used

reverse

the

transmit/receive

frequencies

used

TONE.

TONE

FREQUENCY

кеу

Pressing

the

[EJ]

and

the

R/TONE.

key

order

used

change

the

frequency

the

tone

encoder.

SAVE

The

SAVE

key

used

select

the

power

save

condition

during

the

receive

mode.

Pressing

the

С)

and

the

SAVE

change

the

battery

saver

on/off

ratio.

SPEAKER

MICROPHONE

BATTERY

CASE

order

used

Display

900

OROK]

FREQUENCY

display

Displays

the

operating

frequency.

emo

when

the

Priority

Alert

function

active

Flashes

when

the

channel

busy.

Displays

the

selected

power

save

соп.

dition;

(КОТО,

SAVE]

for

suto

save

mode,

SAVE)

for

save

mode,

and

indicator

Tor

OFF.

eusv

ОМ

whenever

the

squelch

opens

dur-

ing

receive.

all

the

time

the

squelch

control

rotated

counterclockwise,

ond

the

T.SQ

off.

гендж)

during

transmit

modo.

Used

indicate

the

relative

receive

signal

strength,

indication

transmitting.

Indicates

the

selected

frequency

step.

Indicates

the

selected

memory

channel

number.

Indicates

for

approx.

seconds

after

pressing

the

[7]

key.

plays

the

selected

offset,

minus

plus,

and

indicator

for

simplex.

whenever

the

REVERSE

function

active.

Indicates

for

approx.

seconds

after

pressing

the

[Y]

key.

Indicates

the

selected

scan

mode.

Indicates

the

selected

scan

stop

mode.

Flashes

during

scan.

Indicates

that

the

transmitter

has

been

disabled

the

TX.STOP

key.

Indicates

that

all

keyboard

functions.

except

LAMP

key

has

been

disabled

the

KEY

LOCK

activated.

when

the

battery

voltage

falls

be-

low

the

level

for

good

communications.

Recharge/replace

the

battery

pack.

DOUBLE

ROLE

KEYS

fis

These

keys

except

the

and

keys,

have

two

functions.

The

1st

function

printed

the

key.

The

2nd

function

printed

above

the

key.

All

these

2nd

functions

are

active

for

approx.

seconds

af-

ter

pressing

the

[£]

key.

Numeric

keys:

Г]

С,

Theso

keys

are

used

select

the

desired

operating

fre-

quency

and/or

memory

channel

number.

Memory

channel

and

also

serve

additional

functions

discribed

below.

М.

channel

used

store

the

Priority

Alert

channel

formation.

channel

used

store

the

lower,

and

channel

the

upper

limit

frequency

for

the

programmable

band

scan.

UP/DOWN

keys:

ŒJ

ŒI

These

keys

are

used

increase

decrease

the

operating

frequency,

offset

frequency,

tone

frequency,

the

power

saver

circuit

rate.

Function

exchange

key

The

key

used

activate

the

2nd

function.

‘The

indicator

displayed

for

approx.

seconds

after

pressing

the

key.

СА

You

must

press

the

2nd

function

while

the

indicator

lit,

the

radio

will

perform

the

function

printed

on the key,

rather

than

the

function

printed

above

it.

Memory

key

The

[€]

key

used

select

the

desired

memory

channel.

The

operation

similar

that

the

[Z]

key,

that,

the

indicator

will

illuminate

for

seconds

the

LCD

display

CAUTIOI

The

memory

channel

must

selected

within

seconds

press-

кеу.

ENTER

key

The

key

used

enter

frequency

selected

the

numeric

keys.

SCAN

key

The

Ez]

key

used

start

stop

the

scan

function,

PRIORITY

CHANNEL

CHECK

key:

[Z]

then

1/PRIO

These

keys

are

used

monitor

whether

the

priority

chan-

nel

(CH

busy

not.

When

this

function

activated,

the

radio

will

switch

approximately

once

every

seconds.

cancel

this

function,

press these

keys

ag:

[27

then

2/ВЕЕР

Each

time

these

keys

are

pressed,

the

audio

annunciator

will

turned

OFF

alternately.

(FREQUENCY)

STEP

key:

[Z]

then

3/STEP

Each

time

these

keys

are

pressed,

tho

frequency

scanning

step

size

will

increased

kHz.

Several

different

scan

function

keys

and

scan

stop

keys

are

provided.

BAND

SCAN

key:

[Z]

then

4/8AND

MEMORY

SCAN

key:

[Z]

then

5/MEMORY

PROGRAMMABLE

BAND

SCAN

key:

[©]

then

S/PROGRAM

SEEK

OPERATED

SCAN

key:

[Z]

then

7/SEEK

TIME

OPERATED

SCAN

key:

[7-]

then

8/TIME

CARRIER

OPERATED

SCAN

көу:[7_]

then

S/CARRIER

For

additional

information

this

function

refer

page

14.

TX.

STOP

кву:

[7]

then

M/TX.

STOP

Pressing

these

keys

will

prevent

accidental

transmission.

cancell

this

function,

press

these

keys

agai

KEY

LOCK

key:

[Z]

thon

ENTER/KEY

LOCK

Depress

these

keys

and

the

frequency

and

other

settings

will

remain

unchanged

keyboard

operation

except

the

LAMP

key.

cancel

this

function,

press

these

keys

again.

FAST

СО]

key:

С]

then

V/FAST

FAST

[2].

key:

[7]

then

A/FAST.

LOCK

OUT

key:

[7]

then

O/L.OUT

Each

time

these

keys

are

pressed,

the

Memory

channel

lock

out

function

will

turned

OFF.

OPERATION

RECEIVE

After

power

and

antenna

connections

have

been

completed,

set

the

switches

follows:

Turn

the

VOL

control

clockwise

turn

power.

The

frequency

the

LCD

display

will

show

the

transceiver

operating.

the

VOL

control

turned

clockwise,

either

back-

ground

noise

QSO

will

heard.

eliminate

the

no-signal

noise

turn

the

SQL

control

clockwise,

Enter

the

desired

frequency.

TRANSMIT

Precaution:

Check

the

intended

transmit

frequency

before

operating

prevent

interference

with

other

stations.

you

are

using

(Tone

Squelch)

press

the

MONITOR

key

allow

the

Squelch

open.

Simply

depress

the

PTT

switch

and

the

indicator

will

light.

Speak

into

the

microphone.

Recommended

distance

the

microphone

approximately

inches

cm).

CAUTION:

Long

transmission

extended

operation

the

watt

mode

might

‘cause

the

rear

this

transceiver

get

warm.

not

place

the

transceiver

where

the

heat

sink

(rear

panel)

might

come

contact

with

plastic

vinyl

surfaces.

Downloaded

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