Kenwood TR-7730 User manual

TRANSCEIVER

INTRODUCTION

‘You

are

the

owner

our

latest

product,

the

new

TR-7730

transceiver.

Your

transceiver

service.

The

unit

has

been

carefully

engineered

and

manufactured

carefully

before

pla

read

this

instruction

manual

rigid

quality

standards,

and

should

give

you

satisfactory

and

dependable

operation

for

many

years.

AFTER

UNPACKING

‘©

Shipping

container:

Save

the

boxes

and

packing

the

event

your

unit

needs

transported

for

remote

operation,

maintenance,

service.

The

following

explicit

definitions

apply

this

manual:

ACCESSORIES

svsseeee

Caretully

unpack

your

TR-7730

and

check

that

sup-

plied

with

the

following

accessories:

Note:

disregarded,

inconvenience

only,

risk

equipment

damage

personal

injury:

Caution:

Equipment

damage

may

occur,

but

not

personal

injury.

CONTENTS

FEATURES

......

BEFORE

SPECIFICATIONS

SECTION

PREPARATION

FOR

USE

1.1

Installation.

SECTION

CONTROLS

AND

TERMINALS.

2.1

Front

panel

2.2

Rear

panel

SECTION

OPERATION

3.1

Transmitter

precautions...

3.2

Frequency selection

ses

3.3

Priority

controls,

3.4

Memory

switch

3.5

Scan

operation.

3.6

Offset

switch

3.7

Squelct

3.8

HI/LOW

switch,

3.9

Autopatch

operation.

3.10

TONE

switch..

3.11

Bail

and

Foot

installation.

3.12

Adjustments

SECTION

ADDITIONAL

INFORMATION.

SECTION

OPTIONAL

ACCESSORIES.

SCHEMATIC

DIAGRAMS

BLOCK

DIAGRAMS......

Dynamic

microphone

(with

U/D

switch)

(T90-0313-05).....

Mounting

bracket

(A13-0618-22).......

Mounting

boss

(J32-0748-04)

Machine

screw

(3¢

Machine

screw

(36

12)

Pan

head

screw

(6¢

Fiat

washer

(66)

Spring

washer

(69).

Flange

nut

(66)

(For

installation,

see

page

and

13)

Leg

Front

bail

(J02-0420-04)..

esssees]

piece

Bail

mounting hardware

(J21-2676-04)

...

Rear

foot

(J02-0022-05).

power

cord

(E30-1

689-05)

Fuse

(6A)

(FO5-6021-05)

Miniature

plug

(for

external

speaker)

{€12-0001-08)...

eesseeeseeeeeT

POCO

FEATURES

een

Rotary

encoder,

kHz

kHz-step

digital

VFO

system

specifically

designed

for

mobile

operation.

High

amplifier

using

iow

noise

dual

gate

MOS

FET.

PLL

circuit

for

direct

VCO

(Voltage

Controlled

Oscillator)

output

144

MHz

assures

excellent

spurious

characteristic.

BUSY

and

MEMORY

scan

functions

stop

scan

operation

when

signal

present.

Five

memory

channels.

Two

different

frequencies

(transmit

and

receive)

are

stored

CHS,

permitting

“‘odd-split””

repeater

operation.

Hand

microphone

with

UP-DOWN

switch.

OFFSET

Switch

shifts

frequencies

+600

kHz

for

standard

repeater

operation.

POWER

HI(25

—

LOW

select

switch.

10,

Red

LEO

frequency

display.

11,

and

METER

LED

bar

indicator.

12,

External

BACK

terminal.

13.

Extended

frequency

coverage

(143.900~

148.995

MHz)

switchable

kHz

steps,

allowing

simplex

and

repeater

operation

many

MARS

frequencies.

BEFORE

USE

‘These

are

factory

adjustments.

cool

this unit

BEFORE

transmitting.

Keep

equipment

away

from heat

and out

direct

sunlight.

SPECIFICATIONS

Semiconductors

Transistors

46.

FETs

Diodes

144,000

147.995

MHz

Digital

control,

phase

locked

VCO

Frequency

range.

Frequency

synthesizer

Mode

Antenna

impedance

Power

requirement...

Grounding

Negative

Operating

temperature......

~20°C

+60°C

Current

drain

....sse

.0.4A

receive

mode

with

input

signal

5.5A

transmit

mode

(Approx.)

LOW

transmit

mode

(Approx.)

Less

than

2.5

for

memory

back

(from

power

supply)

47.5

(5-3/4")

wide

51.5

(2°)

high

198.0

(7-3/4")

deep

(projections

excluded)

1.5

(3.3

Ibs)

(Approx.)

Dimensions.

Weight...

(Transmitter

Section}

output

power

(at

13.8

VDC,

Pod)...

ssesslll

Watts

min.

LOW

Warts

approx.

(Adjustable!

-+».Variable

reactance

direct

shift

than

20x

Modulation...

Frequency

tolerance...

{~10°C~

+502¢)

Spurious

radiation

-HI

Less

then

LOW

Less than

~53

kHz

Dynamic

microphone

with

PTT,

up,

down,

switche:

Maximum

frequency

deviation

(FM)

Microphone

5009

--.Double

conversion

superheterodyne

1st

10.7

MHz

2nd

455

kHz

Better

than

0.5

for

S/N

Better

than

0.25

for

SINAD

.sMore

than

kHz

(—6

dB)

Less than

kHz

(—60

d8)

Better

than

0.16

(threshold)

‘More

than

2.0

watts

across

ohm

load

(10%

dist.)

Intermediate

frequency

Receiver

sensitivity

Receiver

selectivity

...

Spurious

response.

‘Squelch

sensitivity

Audio

output...

Note:

Circuit

and

ratings

are

subject

change

without

notice

due

developments

technology.

SECTION

PREPARATION

FOR USE

1.1

INSTALLATION

1.1.1,

Interconnection

Connect

the

antenna

and

power

supply

shown

Fig.

1-1

for

fixed

station

mobile

operation.

1.1.2.

MOBILE

installation

Installation

location

Using

the

supplied

mounting

bracket,

install

the

transceiver

under

the

dashboard

the

side

the

console

your

car.

Refer

Fig.

1-2.

Care

should

taken

allow

free

circulation

air

around

the

heat

sink

the

rear

panel.

your

car

equipped

with

electronic

fuel

injector,

the

transceiver

should

far

from

the

control

equip-

‘ment

possible.

Antenna

installation

Various

types

antennas

for

meters

mobile

operation

are

available,

NOTE:

For

gutter-mount

installation,

the

antenna

bracket

must

grounded

the

car

body

shown

Fig.

1-2.

Affix

the

antenna

securely,

referring

the

antenna

instruc-

tion.

‘©

Power

supply

Connect

the

supplied

power

cord

with

fuse

directly

the

battery

terminals.

Connecting

the

cigarette

lighter

socket

can

cause

poor

connection,

and

excessive

voltage

drop.

Back

power

for

micro-processor

With

power

supplied

from

battery,

the

micro-processor

keeps

operating

even when

the

power

switch

OFF.

this

case,

current

drain

very

low,

approximately

2mA.

‘The

car

can

parked

overnight

with

little

battery

power

consumed.

However,

when

the car

parked

for

long

period

‘of

time

(more

than

month),

advisable

discon-

ect

the

power

plug.

this

case,

the

back

function

is,

disabled.

power

diconnected,

the

back-up

fonction

retained

for

only

—

1.5

sec.

instantaneous

voltage

drop

engine-starting

continues

for

than

sec,

the

micro

processor

will

reset

and

the

memory

cleared.

Ignition

noise

The

transceiver

designed

suppress

ignition

noise;

‘excessive

noise

present,

may

use

suppressor

spark

plugs

(with

NOTE:

When

first

connecting

the

power

cable

(with

the

power

switch

off

the

microprocessor

may

not

bein

standby

mode.

Backup

current

‘may

2-3

times

greater

than

normal,

and

the

diaplay

decimal

may

flicker.

Turn

the

power

reset

the

microprocessor.

iam)

1.1.3.

FIXED

STATION

installation

Power

supply

‘The

KPS-7

power

supply

available

optional

accessory

and

perfectly

matches

the

design

your

transceiver.

INSTALLATION

mounting

bracket

nce

poe

nen

Side

Bou

console

RboArd.

Secure

the

mounting

Dracket

with

screws

and

nue

through

the

Boor

Mtg

‘The

wanacewar

shoula

away

‘The

cable

can

inserted:

‘wom

your

knees

(Antenna

TnataTaon)

©—Guer-movotea

wie

antenna

‘Ananna

oracket

amove

hepa

mere

‘rounding

tothe

boar

Fig.

1-2

Installation

for

Mobile

Operation

Connect

Direct

barter

termina

@ricnns

ts.

1-31

Various

types

fixed

station

antennas

are

commercial-

available.

Select

your

antenna

according

your

in-

stallation

space

and

application

(DX,

local

ASO,

etc.)

‘Note

that

the

SWR

your

antenna

should

less

than

1.5,

high

SWR

will

cause

the

TR-7730

protective

cir-

cuit

operate,

reducing

the

transmit

output

power.

‘The

TR-7730

factory

adjusted

deliver

the

rated

output

(25

about

146

MHz,

where

the

meter

indicates

'“6"

the

10-division

scale.

The

meter

will

indicate

about

this

point

when

the

antenna

SWR

less

than

1.5.

Back-up

Power

for

Micro-Processor

(memory

hold)

With

power

supplied

directly

from

the

KPS-7,

the

micro

Processor

continues operating

even

when

the

power

switch

OFF.

Current

drain

very

low,

approximately

2mA.

you

wish

retain

the

memories

even

when

the

KPS-7

off,

connect

the

(optional)

TK-1

(W09-0008-05)

‘the

external

back-up

terminal.

usual

VFO

operation,

the

kHz

digit

can

not

backed-

up.

However,

this

doesn’t

mean

mulfunction.

For

in-

stance,

when

the

TR-7730

power

switch

turned

after

tumed

off

the

operating

frequency

146.255

MHz,

the

operating

frequency

becomes

146.250

MHz.

‘Standard

voltage:

13.8V

Connection

Current

capacity:

than

‘another

source.

Nore

Preteraby.

voltage

should

‘scjustable

between

12V

and

tevoc

‘The

regulated

supply

should

eawed

witha

built-in

protection

exeuit

for

both

overcurrent

ana

overvltage

cAUTiON:

‘Yao!

antenna

(stacked)

Control

cable

lomm-dectonall

and

Yagi

antenna

(urwdirecnonai)

The

Yag'

antenna

Fig.

1-3

Installation

for

Fixed

Station

Operation

Battery

cherger

cannot

used,

[SECTION

CONTROLS

AND

TERMINALS

@KENWOOD

TRANSCEIVER

}

‘

MEMORY

selector

This

switch

used

select

memory

channels

“

through

‘"5"*.

The

operating

frequency

can

stored

called

back from

the

channel

selected

this

switch.

channel

“'5',

two

different

frequencies

(transmit

and

receive)

can

stored

for

“odd-split"”

reps

switch

This

used

input

desired

frequencies

each

channel

for

memory.

pressing

(am)

the

switch,

the

frequency

indicated

the

display

stored

the

selected

channel,

switch

This

used

recall

memory

frequencies

from

each

channel.

Frequency

display

LEDs

display

the

operating

frequency

digits

(MHz

—

kHz)

BUSY

indicator

This

lamp

will

light

when

the

squelch

open

receive

mode.

AIR

indicator

light

emitting

diode

(L.E.0.)

will

fight

the

wansmit

mode.

’

RPT

indicator

When

the

OFFSET

switch

set

position,

this

indicator

lights.

S/RF-meter

This

meter

indicat

transmit

output

(RF).

receive

input

signal

strength

(S)

OFFSET

switch

Shifts

the

transmit

frequency

for

repeater

operation

—:

Switches

the

wansmit

frequency

down

600

kHz

from

the

receive

frequency.

Simplex

(receive

and

transmit

frequencies

are

the

same.)

Switches

the

transmit

frequency

600

kHz

from

the

receive

frequency,

10.

M.S

(MEMORY

SCAN)

switch

Press

this

switch

and

the

memory

channels

are

scan-

‘ned.

The

scan

operation

stops

channel

where

signal

present.

This

switch

should

used

conjunction

with

the

SQUELCH

control

(see

page

11)

11.

MIC

connector

(6-pin)

For

connection

the

supplied

microphone.

12.

TONE

switch

The

switch

for

control

user

supplied

tol

generator

{not

available

from

TRIO-KENWOOD

13.

HOLD

switch

Pressing

this

switch

‘memory

scan.

The

microphone

PTT

switch

also

used

stop

memory

scan.

14,

HILOW

switch

This

switch

used

set

transmit

output

power

either

(high)

(low).

15.

SCAN

switch

this

switch,

scan

operation

starts

the

rate

fected

the

STEP

switch,

the

same

wixtn

youuse

the

main

dial.

When

signal

pregent,

sedafifigistops

and

the

BUSY

indicator

lights.

The

SCAN

switch should

uss

Kenpanbarrwith

the

SQUELCH

CONTROL

and

MEMORY.

SCAN

ewifeh(pee

page

11).

16.

STEP

switch

Use

this

switch

select

the

step

(JM:

kHz,

am:

kHz)

during

frequency

scan

microphone

UP/DOWN

fee

The

squelch

control

used

eliminate

noise

during

no-

signal

time.

Normally,

this

control

adjusted

clockwise

the

noise

disappears

and the

BUSY

indicstor

goes

off

(threshold

level),

19.

POWER/VOL

Power

ON-OFF

switch

and

volume

control

are

combined.

Turning

the

control

fully

counterclockwise

will

turn

the

power

OFF.

Clockwise

rotation

will

increase

the

volume,

‘the

power

OFF

position,

about

2mA

current

drawn

back-up

the

micro-processor,

provided

the

power

cable

cdnnectee

vormment

power

source.

eompotely

Jitele

the

transceiver,

disconnect

the

power

cable.

20.

ANT

terminal

Connect

509

for

21.

EXT.

terminal

External

speaker

terminal.

Connect

ohm

spt

the

supplied

plug.

22.

power

cord

Connect

the

supplied

power

cord.

Input

voltage

13.8V

DC.

Observe

correct plus

(+:

Red)

and

minus

(—:

Black)

polarity.

23.

Back

power

terminal

This

connector

used

for

back-up

fixed

station

opera-

tion.

The

micro-processor

retains

the

VFO

frequency

memory

function

even

when

the

power

switch

turned

OFF,

when

back-up

power

supplied.

Use

optional

TK-1

(W09-0008-05)

24,

PTT

switch

Press-to-talk

switch

used

for

transmission.

This

will

also

release

scan

operation.

25.

DWN

switch

This

switch

used

step

down

the

digital

VFO

frequen-

cy.

26.

switch

This

switch

used

step

the

digital

VFO

frequency.

When

the

DWN

switch

depressed

continuously

frequency

shifts

rapidly.

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