Kenwood TH-28A User manual

Shanna

144

MHz

TRANSCEIVER

TH-28A/28E

430/440

MHz

TRANSCEIVER

-48A/48E

INSTRUCTION

MANUAL

KENWOOD

CORPORATION

©PRINTED

JAPAN

B62-0236-

Ee):

93/4654321

9242111098765432

Models

Covered

This

Manual

TH-28A:

TH-28E:

TH-48A:

TH-48E:

Find

Fast

144MHz

transceiver

144MHz

transceiver

(U.K.and

European

version)

440MHz

transceiver

(U.S.A.

and

Canadian

version)

430MHz

transceiver

(Other

market)

430MHz

transceiver

(U.K.and

European

version)

For

quick

access

transceiver

features

and

functions,

consult

these

handy

listings:

Contents

(page

and

Quick

Reference

(page

and

62)

Notice

the

user:

One

the

following

statements

may

applicable

this

equipment.

FCC

WARNING

This

equipment

generates

uses

radio

frequency

energy.

Changes

modifications

this

equipment

may

cause

harmful

interference

unless

the

modifications

are

expressly

approved

the

instruction

manual.

The

user

could

lose

the

authority

operate

this

equipment

unauthorized

change

modification

made.

Information

the

digital

device

user

required

the

FCC:

This

equipment

has

been

tested

and

found

comply

with

the

limits

for

Class

digital

device,

pursuant

Part

the

FCC

Rules.

These

limits

are

designed

provide

reasonable

protection

against

harmful

interference

residential

installation.

This

equipment

generates,

uses

and

can

generate

radio

frequency

energy

and,

not

installed

and

used

accordance

with

the

instructions,

may

cause

harmful

interference

radio

communications.

However,

there

guarantee

that

the

interference

will

not

occur

particular

installation.

this

equipment

does

cause

harmful

interference

radio

television

reception,

which

can

determined

turning

the

equipment

off

and

on,

the

user

encouraged

try

correct

the

interference

one

the

following

measures:

Reorient

relocate

the

receiving

antenna.

Increase

the

separation

between

the

equipment

and

receiver.

Connect

the

equipment

into

outlet

circuit

different

from

that

which

the

receiver

connected.

Consult

the

dealer

for

technical

assistance.

CONTENTS

BOCESSORIES

oo.

iscicjcs

cider

corte tieas

Bec

BEFORE

OPERATION’

:*.-.

0c.

ts:

set

eee

Controls

Overview

............eeee

eee

THE

BATTERY

PACK

NiCd

Battery

Pack

(PB-13)

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

RECHALGING

0:0acsip

sais

sie

«0s

PARQEE

REE

Installing

The

Battery

Pack

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

Battery

Voltage

Level

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

Battery

Operating

Time

RECEIVER

OPERATION

RANI

StS

asa

dining

ocean

mae

Selecting

Frequency

..............000000

Step

SizeSelection

..................05.

Programmable

VFO

Tuning

Limits

.........

Subband

Reception

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

TRANSMITTER

OPERATION

Srensilh.

cos..4nnis.

AOI

ASE

Changing

Transmitter

Output

Power

.......

&X:

Stop

Functiedsqne

temess

peitane

AFIS

OUt

TMG

Fk?

sos

Sos

dice

ete

teens

USING

THE

MEMORY

Microprocessor

Memory

Backup

..........

Entering

Memory

Data

Initializing

The

Memory

Channel

..................000005

Memory

Contents)

.......6..0

ccc

aee

eset

Entering

Split

Channel

Frequencies

........

Entering

The

Call

Channel

Frequency

Recalling

Memory

Channels

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

MOMORSAHC

.as:<ameccasats

steep

eeeniaouss

SCANNING

Hold/Resume

Programming

.............+

BEAN:

ODTHONS

esate.

os.

023

aguctaaity

aoaaa

eee

Scanning

Memory

Channels

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

Locking

Out

Memory

Channels

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

Band

SCannlng

«..<

ssstine

p29

sede

archaic

Programmable

Band

Scan

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

MHzSean.

ii3.53.3.0

VFO/Memory

Scan

CALL/VFO

Scan

......

CALL/Memory

Scan

V/M/C(VFO/Memory/CALL)

Scan..........

REPEATER

OPERATION

Hransmitter

OFFSETS

oo...

sone

eect

Care

Selecting

the

Offset

Direction

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

Automatic

Offset

Selection

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

Manual

Offset

Selection

The

Reverse

Function

Mone

Operationin.

<5.6..

oes

Autopatch

Operations

...................,

PRIME

MOMONy.

$32.8

2/5

soda

arsroreteende®

“Soewmnonanaon-

bak

ONOaRWNDY

CTCSS'

OPERATION,

o..c..0

so.

gecnaryoreaes

THE

DUAL

TONE

SQUELCH

SYSTEM

(DTSS)

BPSSICOI

NI er

tas

este

weer

2°Using'the:DTSS

Function®

©.

v0.2...

Using

DTSS

with

Repeater

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

PAGING

Paging

Operation

Overview

..............-

Paging

Code

Memory

...............00--

Setting

Paging

Codes

..................--

Sending

Pages

(Calling)

Receiving

Pages

(Wait)

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

Canceling

Signal

Squelch

Locking

OurCodes

wereeesce

MESSAGE

TRANSMISSION

AND

RECEPTION

Message

Transmission

Modes

Using

the

Message

Memory

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

Message

Memory

Check

...........--.--5

Message

Memory

Transmission

Message

Reception

...............-20005

Receive

Message

Memory

..............-

ENHANCED

RECEIVER

FUNCTION

The

ToneAlert

System

...............05-

Monitor

Beep

Off

PaMp..

0.2:

Key

Lock

NOOR

WND

Oahwn

POWER

SAVER

FEATURES

The

Battery

Saver

Mode

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

Automatic

Power

Off

(APO)

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

CLOCK

FUNCTION

WANG

SUA)

o67-:5:6.3)-'5

cise:

5110

estate

ebzenmn

aMIMOUEUNCTIONy

3.5.

<0cc,s viewys

Fenn

Coa

DURE:

OPERATION:

6c5c465

6655.0.

MAINTENANCE

General

Information

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

BOSONIC

Pret

ete

sacar

panel

agaue

see

eiecs

(Record

Keeping

:.5..s5

scs.ncc

ces

ete

Mae

TROUBLESHOOTING

....................65

ACCESSORIES

Installing

the

CTCSS

Unit

(TSU-7)

.........

Memory

Expansion

Unit

(ME-1)

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

Programming

the

SMC-33

Remote

Control

Speaker

Microphone

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

Using

other

microphones

Connecting

External

Speaker

..........

SPEGIFIGATIONS

citi

cacasiarsunnc's

sabeiappne

QUICIGREEERENCE

..csnuhsoaacanians

ACCESSORIES

Antenna

(TH-28A/28E)

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

T90-0444-x

Antenna

(TH-48A/48E)

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

T90-0445-x

Belt

Hook

Hand

Strap

RUDD

CAD

cian

iyo:

gisn

sisiishern

ass

boas

BO9-0329-

plug

type

only)

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

E19-0254-X

NiCd

Battery

Pack(PB-13)

..........

W09-0563-

Battery

Charger(BC-14)

for

U.S.A.

and

Canada

(120V)

G(s

TPs

sas

REI

ee as

W09-0565-

X X

for

Europe

(220V)

wigibnvee

dag

aeacbeeey

WO09-0569-

for

U.K.version

(240V)

its

cece

rcdhaverere

oes

WO09-0568-

for

Oceania

(240V)

eee

eree

WO09-0567-

for

other

market

(120/240V)

ROA

KOMEN

fa'ele

die

Gres

WO9-0566-

Instruction

Manual

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

B62-0236-

Warranty

Card(U.S.A.,Canada,and

Europe)

Note

Your

transceiver

comes

with

portable

flex

antenna.

For

fixed

transceiver

locations,

recommend

that

you

use

permanent

antenna

installation

help

eliminate

interference

and

improve

performance.

BEFORE

OPERATION

Thank

you

for

purchasing

this

KENWOOD

transceiver.

get

the

most

out

its

many

features,

suggest

you

read

this

instruction

manual

carefully,

and

keep

handy

for

further

reference.

get

ready

transmit

and

receive.

Check

the

accessories

list

sure

everything

you

need

has

been

included

the

package.

Charge

the

included

NiCd

battery

pack,

following

the

instructions

completely

before

proceeding.

When

you

have

everything

checked

out

and

charged

you're

ready

get

the

Receiver

Operation

section

and

get

and

running

with

your

new

equipment.

Other

sections

logical

order

help

you

learn

and

use

this

transceiver

its

full

potential.

CAUTION

The

recommended

transceiver

duty

cycle

minute

transmission

and

minutes

reception.

Longer

transmissions

extended

operation

the

power

mode

may

cause

the

back

the

transceiver

get

warm.

not

place

the

transceiver

where

the

heat

sink

(rear

panel)

might

come

contact

with

plastic

vinyl

surfaces.

Controls

Overview

This

transceiver

has

different

key

layouts

for

each

destination.

Check

the

version

your

transceiver

first

looking

the

following

illustration.

Pag

orss

cress

TRANSCEIVER

TH-28A

144MHZ

All

types

except

U.K

and

European

version

PAG

orss

cress

‘CeCe

Cor),

TRANSCEIVER

TH-28E

144MHZ

U.K

and

Europe

version

only

This

diagram

will

help

you

locate

the

keys,

switches,

and

knobs

you'll

need

perform

necessary

operations.

Please

study

these

controls

carefully.

the

time

you

reach

the

end

this

manual,

you

will

have

had

use

each

them

many

times.

ANTENNA

(PUSH

TALK

SWITCH)

LAMP

KEY

MONITOR

KEY

BATTERY

PACK

All

types

except

U.K

and

European

version

VOL

(VOLUME

CONTROL)

SQL

(SQUELCH

CONTROL)

ANTENNA:

CONNECTOR

TERMINAL

MICROPHONE

JACK

AIR

INDICATOR

SPEAKER

HEADPHONE

JACK

_anenna

(PUSH

TALK

SWITCH)

U.K

and

Europe

version

only

THE

BATTERY

PACK

NiCd

Battery

Pack

(PB-13)

You

must

charge

the

battery

before

you

can

use

it.

NOTE

has

not

been

charged

the

factory

order

Recharging

should

done

within

ambient

provide

you

with

the

greatest

number

charge/

temperature

between

5°C

40°C

(41°F

discharge

cycles.

takes

several

charge/discharge

cycles

before

the

battery

pack

will

operate

for

its

maximum

period.

you

store

the

battery

pack

for

than

two

months,

recharge

before

use.

104°F).

Recharging

performed

out

this

range

may

not

fully

charge

the

battery.

Recharging

Installing

The

Battery

Pack

Insert

the

charge

plug

from

the

charger

(BC-14)

into

Insert

the

battery

pack

into

the

transceiver

until

the

receptacle

the

top

the

transceiver.

Then

locks

place.

plug

the

charger

into

the

line.

not

allow

the

remove

the

battery

pack

slide

the

Release

button

battery

charge

for

greater

than

hours.

The

the

right

and

pull

the

pack

down.

useful

life

and

battery

performance

will

reduced

you

exceed

the

recommended

charge

period.

RELEASE

button

Transceiver

BC-14

(Illustrations

show

the

U.S.A.

version.)

Battery

Voltage

Level

The

meter

indicates

the

relative

battery

voltage

during

transmit.

Recharge

replace

the

batteries

when

the

level

reaches

the

low

indicator.

NiCd

Battery

pack

Battery

Operating

Time

(hours)

Fully

charged

Fully

discharged

i—s

PB-13

PB-14o0r

(13.8

Approximate

battery

condition

Manganese

Alkaline

Batteries

Load

(AA)

manganese

alkaline

batteries

series

the

optional

battery

case(BT-8).

sure

observe

the

polarities.

recommend

use

high

performance

manganese

batteries.

Manganese

Alkaline

batteries

New

batteries

Need

change

batteries

Approximate

battery

condition

Transmitter

output

power

Models

Batteries

PB-13

5.5

AT:

TH-28A

;

Alkaline

23 60

Manganese 4

PB-13

TH-48A

Tiaae

Alkaline

Manganese 4

seconds

transmission,

seconds

reception,

seconds

reception

with

signal

recommended.

output

0.2W/8

ohms.

Battery

saver

function

on.

CAUTION

The

display

indicator

flashes

and

the

POWER

switch

will

not

work

when

the

battery

starts

flat.

When

this

happens,

recharge

replace

the

battery.

recommend

use

the

NiCd

battery

pack

for

long

transmission

extended

operation.

Manganese

batteries

(

except

Alkaline

manganese

batteries

)

may

used

for

Low

position.

RECEIVER

OPERATION

Getting

started

Connect

the

battery

pack

and

the

supplied

antenna.

Press

the

POWER

switch

turn

the

transceiver

on.

One

the

default

frequencies

should

appear

the

display.

TH-28A/E

meet

LLL

APO

TH-48A/E

tt.

fee

abies

mre

it.

LiL

apr

the

display

shows

incomplete

data,

you

think

the

displayed

frequency

wrong,

reset

the

micro-

processor

(see

page

Initializng

the

Memory).

Rotate

the

VOL

control

clockwise

until

signal

noise

heard

coming

from

the

speaker.

Rotate

the

tuning

control

selected

open

channel.

Rotate

the

SQL

control

clockwise

until

the

noise

just

disappears

and

the

BUSY

indicator

turns

off.

This

point

known

the

Squelch

Threshold

point.

sel

Most

programming

procedures

mentioned

this

manual

allow

second

delay

between

steps.

youwait

too

long

perform

step

the

transceiver

will

return

the

normal

frequency

display.

this

occurs

you

will

have

begin

the

procedure

again.

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