Kenwood TM-721A Manual de usuario

GOO/MNA»

144/440MHz

DUAL

BANDER

IM-721A

144/430MHz

DUAL

BANDER

IM-721A

TM-721E

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

power

mode

might

cause

the

rear

this

transceiver

get

warm.

not

piace

the

transceiver

where

the

heat

sink

(rear

panel)

might

come

contact

with

plastic

vinyl

surfaces.

The

following

explicit

definitions

apply

this

manual:

Note

disregarded,

inconvenience

only,

risk

equipment

damage

personal

injury.

Caution

Equipment

damage

may

occur,

but

not

per-

sonal

injury.

illustrations

show

the

TM-721A.

CONTENTS

PWN>

INSTALLATION

INSTRUCTIONS

..............00008

OPERATION.........:ccccccecnsccescncsarectsaseceascees

OPERATING

CONTROLS

RECEIVER

OPERATION.

..ccsccccescacccesscusccensces

Reception

Frequency

Selection

....ccccccsreccssenccnvecscccae

Frequency

Step

Selection........ccccsssncceeesace

A.B.C.

(Automatic

Band

Change)

.......sesssees

Beep

Tone

TRANSMITTER

OPERATION

......ccccccssactecceees

REPEATER

OPERATION

......cccessesecccsscccesecees

Transmitter

Offsets

Reverse

Function

Tone

Operation

Autopatch

(U.S.A.

version

only)

..cccsseoesseeoes

MEMORY

.....ccccecscctecsccuccscuvesscevorseeeentscces

Microprocessor

Memory

Back-up

Microprocessor

Initialization

Memory

Channel

Memory

Contents

Memory

Entry

.....cccscsecesccunnsscenccerscceueres

Simplex/Normal

SHIFT

Qdd

Split

Channel

Call

Channel.......cecccccsecccsestsecsscernacses

Memory

Recall

Memory

Shift

Scan

Options

Programmable

Band

Scan/Band

Scan

Memory

Channel

Scan

Hold

Resume

Programming

Priority

Alert

.......scccececesceseccrscentcsvercenses

Memory

Channel

Lockout

BLOCK

DIAGRAM

and

SCHEMATIC

DIAGRAM

77°77"

another

sheet

MAINTENANCE

...........00.0cecsnsecsseccsceressensens

Case

Difficulty

..........cccecescsscesesseeneneeee

OPTIONAL

ACCESSORIES.............0:c+ececceceas

CTCSS

unit

TSU-6

(U.S.A.

version)

.....cccsenseees

REMOTE

CONTROLLER

RC-10.........0sesenccseeee

REFERENCE

.............ccscesceeseecccscvcvccecnsvrscres

BEFORE

OPERATION

Safety

precautions

The

power

requirement

13.8

VDC.

Never

remove

the

case

unless

instructed

this

In-

Never

attempt

connection

VDC

source.

struction

Manual.

the

internal

parts

are

touched

acciden-

tally,

serious

electric

shock

might

occur.

Never

touch

internal

parts.

Power

Supply:

Touching

the

power

plug

when

your

hands

are

wet

may

result

serious

electric

shock.

_ .

~\Gnv”

metal

object,

such

hair

needle,

comes

into

contact

with

the

power

socket

the

rear

panel,

oT.

Never

touch

with

wet

hands.

dangerous

electric

shock

may

result.

Never

permit

children

put

anything,

especially

metal

objects,

inside

this

unit.

Power

Supply:

Never

pull,

bend

extend

the

power

cord.

This

could

damage

the

power

cord,

resulting

broken

cord

short-

circuit.

(MPBEN

Always

grasp

the

plug.

Installation

notes

not

place

this

unit

location

that

exposed

direct

sunlight,

near

heating

appliance,

etc.

not

store

use

the

unit

dusty

location

moist

atmosphere.

Select

location

where

there

good

ventila-

‘

-s

case

abnormal

odor

abnormal

odor

smoke

detected,

immediately

turn

the

power

OFF

and

pull

out

the

power

cord.

Contact

your

dealer

nearest

Service

Station.

(ges

maintain

good

ventilation,

not

put

books

papers

the

unit.

Position

the

unit

least

away

from

the

walls.

Cleaning

not

use

volatile

solvents

such

alcohol,

paint

thinner,

gasoline,

benzine,

etc.

clean

the

cabinet.

Use

silicone

cloth

clean

dry

cloth.

Silicone

cloth

Thinner

Benzine

SPECIFICATIONS

AND

ACCESSORIES

2-1.

SPECIFICATIONS

Model

TM-721A4

TM-721E

Other

markets

Specifications

U.S.A.

version

144

148

MHz

|144

148

MHz]

144

146

MHz

Frequency

range

438

450

MHz

|430

440

MHz

430

440

MHz

Mode

F3E

(FM}

Antenna

impedance

ohms

Power

requirements

13.8

VOC

+15%

Ground

Negative

[Transmit

mode

(Max.}

O5A

5-5/

Receive

made

with

Sena

0.6

Operating

temperature

20°C

+60°C

(-4°F

+140°F)

Dimensions

"yO"

™

(Projections

included)

180x

50x

219

(5.9%x

27x

8.6%}

Weight

1.8

(3.97

Ibs)

Output

144

MHz:

430/440

MHz:

power

[

LOW

Modulation

Reactance

modulation

€

Spurious

radiation

Less

than

—60

Maximum

frequency

deviation

kHz

Audio

distortion

{at

60%

modulation)

Less

than

{300

3000

Hz)

Microphone

impedance

§00

600

ohms

Circuitry

Double

conversion

superheterodyne

144

MHz:

16.9

MH2z/455

kHz,

intermediate

O=*

version

440

MHz:

21.6

MHz/455

kHz

frequency

144

MHz:

10.7

MH2/455

kHz,

Other

market

430

MHz:

30.825MH2/455

kHz

Sensitivity(12

SINAD)

MMizeLess

than

0.2

.450/440iiizsLess_

then

0.16

—6

dB:

than

kHz,

Selectivity

~60

dB;

Less than

kHz

Spurious

response

Better

than

Squelch

sensitivity

Less

than

0.09

Output

than

2 W

across

ohms

load

(5%

distortion)

External

speaker

impedance

ohms

Notes:

Circuit

and

ratings

are

subject

change

without

notice

due

advancement

technology.

Recommended

duty

cycle:

minute

Transmission,

minutes

Reception

2-2.

ACCESSORIES

Unpack

your

new

transceiver

carefully,

and

confirm

that

the

accessories

listed

below

are

included

the

box.

MC-48B

DTMF

Microphone

(U.S.A,

only)

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

peceeeeeeee

T91-0359-05....1

ea.

Dynamic

Microphone

......

seeeeeeeee

91-0365-15....1

ea.

Microphone

Hook

(U.S.A.

only)...J20-0319-24

....1

ea.

Self

tapping

Screw

(U.S.A.

only)

.N46-3010-46....2

ea.

Mobile

Mounting

Kit

;

Bracket

........cscsceceveer

even

ree

»-»

JZ9-0418-03

....1

ea.

SEMS

Screw

.......

venta

eeeeeecene

..NO9-1530-05....4

ea.

Self

tapping

Screw

........-...06

NO9-0335-05....4

ea.

Flat

Washer..........++

ereeeeere

eseeeeeeeee

ea.

Power

Cable..............

seeereee-EGO-2111-05

....1

ea.

Fuse

(10A).......-c0esreeeeeeee

beeeerees

FO5-1031-05

....1

ea.

Instruction

Manual..............6.

....B50-8225-00...1

copy

Warranty

Card

(U.S.A.

only)...

veseel

C8,

After

unpacking

Shipping

container:

Save

the

boxes

and

packing

the

event

your

unit

needs

transported

for

remote

operation,

maintenance,

ser-

vice.

INSTALLATION

INSTRUCTIONS

3-1.

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

washer

—

pcs.

each).

capping

—4

Attach

the

transceiver

loosely

using

the

SEMS

screws

pcs.).

The

angle

the

bracket

may

adjusted

any

possible

viewing

angles.

Select

the

desired

angle.

Fig.

(Fig.

Hold

the

transceiver

place

and

tighten

the

SEMS

screws

using

wrench

or.screwdriver.

144

MHz

430

MHz

3-2.

CONNECTIONS

3-2-1.

Mobile

Installations

The

MA-40C0

dual

band

144

MHz

antenna

recommended.

External

Speaker(_]

The

SP-40

the

SP-5OB

recommended.

Duplexer

430/440

MHz

antenna

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.

Battery

Connections

Connect

the

power

cable

directly

the

battery

terminals.

Use

the

cigarette

lighter

socket

can

lead

poor

connec-

tion,

and

result

poor

performance.

Pay

attention

the

polarity

the

cables

when

connecting

them

the

bat-

tery.

Make

sure

the

positive

(+)

and

negative

(—)

lead

polarity

correct

when

connecting

the

battery.

Engine

cornpartment

~—{—+~

Passenger

compartment

Red

Fuse

(

the

transceiver

Select

location

where

the

power

cable

pro-

tected

from

heat,

mois-

ture

abrasion

securing

the

cable.

Chassis

fire

wall

using

grommet.

the

wiring

hole

the

fire

wall

chassis

too

small,

disassemble

the

fuse

holder

thread

the

wire

through

the

hoie.

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).

3-2-2.

Fixed

Station

regulated

power

supply

(13.8

VDC

capable

sup-

plying

least

Amperes)

required.

The

PS-430

and

the

PS-50

are

recommended.

CAUTION:

Never

connect

the

power

cable

the

outlet

until

all

other

connections

have

been

made.

Before

connecting

and

disconnecting

the

power

connec-

tor,

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

polari-

must

correct.

The

power

cable

color

coded:

Red

—

(Positive

polarity)

Black

~—

(Negative

polarity)

144

MHz

antenna

PS-430

SP-430

430/440

MHz

antenna

3-2-3.

Antenna

The

type

antenna

that

used

will

greatly

affect

the

per-

formance

the

transceiver.

Use

properly

adjusted

anten-

na,

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-8U

recom-

mended.

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:

For

protection

against

fire,

electric

shock,

personal

injury,

damage

the

radio,

use

lightning

arrester

your

antenna

lines.

OPERATION

4-1.

OPERATING

CONTROLS

4-1-1.

Front

Panel

ert

REV

ERI

Meats

BANDE

TM-7PtA]

“Ge

'2n"

cTcbs

BAS

iran

@=——op

Chae

BUSY

LOW

Ree

BALL

poo

MUTE

Main

Tuning

control

This

control

used

select

the

desired

transmit/

receive

frequency,

Memory

Channel,

Frequency

Step,

Tone

Frequency,

and

Scan

direction

the

MAIN

fre-

quency

band.

CALL

key

(TM-721A)

The

CALL

key

selects

the

CALL

channel

the

MAIN

frequency

band.

The

frequency

has

been

factory-set

follows,

but

may

reset

any

desired

frequency.

(See

CALL

Channel

P25.)

U.S.A.

version

;

440.000/144.000

Other

market

;

430.000/144.000

TONE

key

(TM-721E)

European

version:

This

key

used

transmit

Tone

signal.

When

the

key

depressed

the

repeater

con-

trol

signal

1750

activated.

U.K.

version:

This

key

used

activate

the

1750

tone

burst.

VFO

key

This

key

used

return

VFO

operation

after

operating

the

(Memory

Recall),

CALL

Channel

mode

(TM-721A

only).

The

MAIN

tuning

control

will

increase

frequency

the

selected

step

size,

the

tone

frequency

(TM-721A

only),

and/or

the

frequency

step.

MR/M

key

This

key

used

select

Memory

Recall

operation

after

operating

the

VFO

CALL

channel

mode.

The

MAIN

Tuning

control

may

used

select

the

desired

memory

channel

this

mode.

VOL

control/Power

switch

;

The

volume

control

and

power

switch

are

combined.

Rotating

the

control

clockwise

will

turn

the

transceiver.

Advancing

the

control

further

clockwise

will

increase

the

total

volume

two

bands.

The

BALANCE

control

proportions

the

volume

among

the

two

bands.

MAIN

SQL

control

This

control

used

select

the

desired

SOL

threshold

level

the

MAIN

frequency

band.

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