Kenwood TM-241A Manuale utente

aan

144MHz

TRANSCEIVER

TM-241A/241E

TM-541A/541E

INSTRUCTION

MANUAL

KENWOOD

CORPORATION

Thank

you

for

purchasing

this

new

transceiver.

IMPORTANT:

Please

read

this

instruction

manual

carefully

before

placing

your

transceiver

service.

SAVE

THIS

INSTRUCTION

MANUAL.

CAUTION:

Long

transmission

extended

operation

the

transceiver

get

warm.

not

place

the

transceiver

where

the

heat

sink

(rear

panel)

might

come

contact

with

plastic

vinyl

surfaces.

|HI

power

mode

might

cause

the

rear

this

This

instruction

Manual

covers

the

following

models.

TM-241A:

144MHz

TRANSCEIVER

(U.S.A.

and

general

markets)

TM-241E:

144MHz

TRANSCEIVER

(U.K.

and

European

markets)

TM-441A:

440MHz

TRANSCEIVER

(U.S.A.

only)

TM-441A:

430MHz

TRANSCEIVER

(General

markets)

TM-441E:

430MHz

TRANSCEIVER

(U.K.

and

European

markets)

TM-541A:

1200MHz

TRANSCEIVER

(U.S.A.

only)

TM-541E:

1200MHz

TRANSCEIVER

(European

markets)

NOTE:

disregarded,

inconvenience

only,

risk

equipment

damage

personal

injury.

CAUTION:

Equipment

damage

may

occur,

but

not

personal

injury.

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.

CONTENTS

Hold/Resume

Programming

...........

BanGScany

ase

tacnegt

esate

qnnahadiede

BEFORE

OPERATION

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

Programmable

Band

Scan

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

SPECIFICATIONS

................00065

Memory

Channel

Scan

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

Memory

Channel

Lockout

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

ACCESSORIES

...................00005

Priority

Alert

Function

..............5:

228

INSTALLATION

INSTRUCTIONS

......

REPEATER

OPERATIONS

Transmitter

Offsets

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

OPERATION

Reverse

Function

..............0000

eee

CONTROL

FUNCTIONS...........0000008

Tone

Operation

.........ecce

cece

eee

RECEIVER

OPERATION

Tone

Frequency

Selection

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

Reception

.....

pees

eee

Autopatch

(U.S.A.

version

only)

.......-

Frequency

Selection

pthe

seats

Sun

aug

TONE

CTCSS

OPERATION..........

Frequency

Step

Selection

............6.

DTSS

(Dual

Tone

Squelch

System)

Programmable

VFO

Tuning

Limits

......

OPERATION

..........

cece

eee

ALT(TM-541A/E

only)

Sadia

sei

sceaategevemedye

eaue.

DRS

(Digital

Recording

System)

TRANSMITTER

OPERATION

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

OPERATION

.....ccccccececceceveeees

Time-out

Timer

(TOT)

..-.-

+++

see

eee

PAGING

peecg

suede

ucts

paces

Ree

MEMORY

TONE

ALERT

SYSTEM

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

Microprocessor

Memory

back-up

.......

APO

(Automatic

Power

Off)

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

Initial

State

2.0.0.0...

eee

DIMcDimmer)

PONT

ee?

Microprocessor

Initialization

...........

BEEP

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

ccccccucccveccuceues

Memory

Channel

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

LOCK

/ALOCK

Anitascecs

eeeniaes

Contents

.........2..2..000005

MEISE)

EREV

scacls

cca)

meen

22-6.

BLOCK

DIAGRAM

and

Memory

Channel

Recall

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

SCHEMATIC

DIAGRAM

Another

sheet

Memory

Shift

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

00:

MAINTENANCE

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

SCAN

CASE

DIFFICULTY

...........

Scan

Operation

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

cece

eee

OPTIONAL

ACCESSORIES

...........

WARNING);

BEFORE

OPERATION

PREVENT

ELECTRIC

SHOCK,

FIRE

AND

OTHER

INJURY.

PLEASE

NOTE

THE

FOLLOWINGS:

avoid

risk

electric

shock,under

circumstances

should

the

unit

opened.

not

place

this

unit,where

will

exposed

direct

sunlight

heating

appliances.

ensure

good

ventilation,

not

put

anything

top

the

cabinet

and

allow

least

inches)

space

behind

the

unit.

The

power

requirement

13.8

VDC.

Never

attempt

connection

VDC

source.

not

place

the

unit

areas

off

excessive

dust,

high

humidity

unstable

surfaces.

not

drop

pieces

metal,

needles,

coins

and

other

electrically

conductive

materials

into

the

unit.

not

touch

the

power

plug,

when

your

hands

are

wet.

not

pull

the

power

cord,

when

disconnecting

from

the

wall

outlet.

Grasp

the

plug

and

ensure

that

your

fingers

not

touch

the

live

pins.

abnormal

odor

smoke

detected,

immediately

turn

the

power

off

and

pull

out

the

power

plug.

Contact

the

KENWOOD.

service

station

our

dealer.

CLEANING

Turn

the

power

off,

before

cleaning

the

unit.

not

use

any

type

abrasive

pad,

thinner,

benzine

any

substances

which

may

damage

the

unit.

Wipe

the

front

panel

and

other

exterior

surfaces

the

unit

with

soft

dry

cloth

soft

cloth

lightly

moistened

with

water.

SPECIFICATIONS

TM-241Awsa‘canaday

TM-241A/E

TM-441Awsavcanada|

TM-441A

TM-441E

TM-541A/E

Frequency

range

MHz

144

148

146

438

450

430

440

430

440

1240

1300

Mode

F3E(FM)

Antenna

impedance

500

Operating

temperature

—20°C

60°C

(—4°F

140°F)

cs)

Power

requirements

13.8V

+15%(117~158V)

Ground

Negative

Current

drain

Transmit

mode

Less

than

11A

Less

than

10A

Less than

Receiver

mode

Less

than

0.6A

Frequency

stability

Less

than

+10ppm

Less

than+3ppm

Dimensions

(WXHXD)

(mm)

(Projections

included)

140

X40

160(5-1/2"

1.37/64"

x6-19/64")

(140

X40

X172(5-1/2"

1-37/64"

X6-25/32")

Weight

(kg)

1.2(2.65ibs)

5OW

35W

10W

Output

power

MID

Approx

1OW

Approx

10W

LOW

Approx.

Modulation

Reactance

modulation

Spurious

radiation

Less

than

—

Maximum

frequency

deviation

+5KHz

Audio

distortion

(at

60%

modulation)

Less

than

(300

3000

Hz)

Microphone

impedance

6000,

Circuity

Double

conversion

superheterodyne

Intermediate

frequency

1st/2nd

30,825MHz/455kHz

10.7MHz/455kKH2

30.825MHz

455kHz

159.7MHz/455kHz

Sensitivity

(12

SINAD)

Less

than

0.25nV

Less than

0.16

‘@

Selectivity

—6dB:

than

kHz

-—60dB

Less than

kHz

Squelch

sensitivity

Less

than

0.1

Less

than

0.177

Less

than0.1

Output

(5%

distortion)

than

across

loads

External

speaker

impedance

‘

Australia:

144

148

Recommended

duty

cycle:

minute

Transmit,

minutes

Reception

Circuits

and

ratings

are

subject

change

without

notice

due

advancement

technology.

ACCESSORIES

Unpack

your

new

transceiver

carefully,

and

examine

for

visible

damage

the

equipment

has

been

damaged

shipment,

notify

the

transportation

company

immediately.

Save

the

boxes

and

packing

material

for

future

shipping.

The

following

accessories

should

included

the

box

with

the

transceiver.

DTMF

Microphone

(U.S.A.

CANADA

only)

.........

Dynamic

Microphone

(GENERAL

market

only)

.......

Dynamic

Microphone

(EUROPE

market

only)

........

Microphone

Hook

(U.S.A.

CANADA

only)

........

Mobile

Mounting

Kit

Bracke,

.c.i4ecn0tagene

Screw

set

...........0--

Self

tapping

Screw

(U.S.A.

CANADA

only)

...

Hex

wrench

Stacking

plate

(TM-441A/441E/541A/541E)..

T91-0380-X5

ea.

T91-0379-X5

ea.

T91-0382-X5

ea.

J20-0319-24

ea.

J29-0436-03

ea.

N99-0331-05

ea.

N46-3010-46

ea.

WO01-0414-04

ea.

J21-4147-14

ea.

cee

power

Cable

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

E30-2111-05

ea.

Fuse

(TM-241A/241E:

15A)..

FO5-1531-05

ea.

(TM-441A/441E:

10A)..

FO5-1031-05

ea.

(TM-541A/541E:

8A)...

FO5-8021-05

ea.

Instruction

Manual

...........

B62-0031-XX

copy

Warranty

Card

........c

ccc

cece

ccc

eeeee

ea.

(U.S.A.,

CANADA

EUROPE

market

only)

INSTALLATION

INSTRUCTIONS

4-1

INSTALLATION

Mounting

Bracket

When

installing

the

transceiver

vehicle

consider

the

ease

operation

and

safety

when

selecting

the

location

for

the

mounting

bracket.

Install

the

bracket

using

the

supplied

flat

washers

and

self

tapping

screws

(

pcs.each).

Attach

the

transceiver

loosely

using

the

SEMS

screws.

Align

the

grooves

the

bracket

with

the

transceiver’s

screws

(

Fig.

and

slide

the

transceiver

the

rear.

Adjust

the

viewing

angle

the

bracket

the

desired

position

(

Fig.

B).

Hold

the

transceiver

place

and

tighten

the

SEMS

screws

using

the

supplied

wrench.

4-2

CONNECTION

4-2-1

Mobile

Installations

Cautions

Before

installing

the

power

cable,

sure

remove

the

negative

lead

from

the

battery

for

safety.

After

installation

and

wiring,

sure

double

check

for

correct

installation

before

reconnecting

the

negative

lead

the

battery

terminal.

the

fuse

opens,

sure

check

that

each

conductor

has

not

been

damaged

short

circuiting,

etc.

Then

replace

with

new

fuse

the

same

rating.

After

completing

the

wiring,

wrap

the

fuse

holder

with

heat

resistant

tape

protect

against

heat

and

moisture.

not

remove

the

fuse

even

the

power

cable

too

long.

eee

Mec

Battery

Connections

Connect

the

power

cable

directly

the

battery

terminals.

Using

the

cigarette

lighter

socket

will

lead

poor

connection,

and

will

result

poor

performance.

Pay

attention

the

polarity

the

cables

when

connecting

them

the

battery.

Make

sure

the

positive

(+)

and

negative

(—)

lead

polarity

correct

when

connecting

the

battery.

Engine

bah

eee

nie

Passenger

compartment

Fuse

Select

location

where

the

power

cable

pro-

tected

from

heat,

mois-

ture

abrasion

when

securing

the

cable.

Red

the

transceiver

Make

sure

the

cable

does

not

directly

contact

the

edge

the

hole

using

grommet.

Chassis

\——_-_—-____/

fire

wall

Battery

the

wiring

hole

the

fire

wall

chassis

too

small,

disas-

semble

the

fuse

holder

thread

the

wire

through

the

hole.

From

passenger

compartment

Thread

this

Ignition

Noise

This

transceiver

has

been

designed

suppress

ignition

noise;

however,

excessive

noise

present,

may

necessary

use

suppressor

spark

plugs

(with

resistors).

4.2.2 Fixed

Station

regulated

power

supply

(13.8

VDC

capable

supplying

least

amperes)

required.

PS-33

recommended.

Never

connect

the

power

cable

the

outlet

until

all

other

connections

have

been

made.

Before

connecting

and

disconnecting

the

power

connector,

sure

turn

OFF

the

POWER

switches

both

the

transceiver

and

the

power

supply.

Observe

polarity

the

power

cable.

The

transceiver

operates

13.8

VDC,

negative

ground.

Battery

polarity

must

correct.

The

power

cable

color

coded

Red

—

(Positive

polarity)

Black

—

(Negative

polarity)

4-2-3

Antenna

The

type

antenna

that

used

will

greatly

affect

the

performance

the

transceiver.

Use

properly

adjusted

antenna,

good

quality,

enable

your

transceiver

perform

its

best.

The

antenna

input

impedance

ohms.

Use

50-ohm

coaxial

cable

such

RG-8U

8D-2V

for

this

connection.

the

antenna

far

from

the

transceiver

the

use

low

loss

coaxial

cable,

such

RG-

recommended.

Match

the

impedance

the

coaxial

cable

and

that

the

antenna

that

the

SWR

less

than

1.5

The

protection

circuit

the

transceiver

will

activate

the

SWR

particularly

poor

(greater

than

1).

High

SWR

values

will

cause

the

transmitter

output

drop,

and

may

lead

TVI

BCI

reports.

Caution

recommend

that

you

install

high

quality

lightening

arrestor

your

antenna

lines

for

protection

against

fire,electric

shock,personal

injury,or

damage

the

radio

itself.

OPERATION

5-1-1

CONTROL

FUNCTIONS

ALOCK

FEV

eTcss

G88seas

eneesenese

jsau

TMi

eat

SLORTE

POWER

switch

Press

turn

the

transceiver

off.

Press

the

VFO/MPV

MR/M

key

and

switching

the

power

will

reset

the

VFO

MEMORY.

The

microphone

key

can

programmed

when

the

power

switched

on.

Tuning

control

This

control

used

select

the

desired

transmitter/receiver

frequency,

MHz

step,

memory

channel,

frequency

step,

tone

frequency,

scan

direction,

etc.

VOL

control

This

control

used

adjust

the

volume

from

the

internal

and

external

speaker

(if

used).

Clockwise

rotation

will

increase

the

volume

and

counterclockwise

rotation

will

decrease

the

volume.

SQL

(Squeich)

control

This

control

used

select

the

desired

squelch

threshold

level.

LOW/DIM

key

LOW

This

function

used

select

the

transmit

output

power

level

(HI,

MID(Except

TM-541A/E),

LOW).

DIM

This

function

used

select

the

intensity

the

front

panel

display

illumination.

(See

page

48)

Pressing

the

key

for

longer

than

second

and

then

press

the

LOW/DIM

key

while

the

indicator

flash-

ing

will

turn

the

time-out

timer

function

and

off.

Microphone

connector

Attach

the

supplied

microphone

this

connector.

The

out

the

connector

shown

the

accompanying

illustration.

GND

GNO

{Microphone

audial

MIC

‘audio}

(Microphone

Audio)

Audio

Output

PTT

(Approx

100

mV/10

ohm)

(Push

Talk)

DWN

VDC

(Max

150

mA)

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