Kenwood TS-790A User manual

GOO/ANAD

ALLMODE

TRIBANDER

TS-790A

TS-790E

INSTRUCTION

MANUAL

KENWOOD

CORPORATION

PRINTED

IN

JAPAN

B50-8254-30(K,

M,

M2,

T,

WH(MC)

96N2110987654321

95121

10987

Thank

you

for

purchasing

this

new

transceiver.

IMPORTANT:

=

Please

read

this

Instruction

Manual

carefully

before

placing

the

transceiver

in

service.

SAVE

THIS

INSTRUCTION

MANUAL.

The

following

explicit

definitions

apply

in

this

manual:

Note

:

If

disregarded,

inconvenience

only,

no

risk

of

equipment

damage

or

personal

injury.

:

Equipment

damage

may

occur,

but

not

personal

injury.

Caution

This

Instruction

Manual

covers

the

following

|

models:

TS-790A:All

Mode

Tribander

i

{U.S.A.

and

general

markets)

|

TS-790E:

All

Mode

Tribander

|

(U.K.

and

European

markets)

|

Illustrations

show

the

TS-790A.

CONTENTS

2-1.

SPECIFICATIONS

...

2-2.

ACCESSORIES

3.

INSTALLATION

AND

CONNECTION

....

3-1.

INSTALLATION

3-2.

CONNECTION

4.

OPERATION

4-1.

OPERATING

CONTROLS

.

4-2.

RECEIVER

OPERATION....

4-3.

TRANSMITTER

OPERATION

4-4.

MEMORY....

4-5.

SCAN

4-6.

REPEATER

OPERATION.

4-7.

TONE

SQUELCH

(CTCSS)

4-8.

TRACE

FUNCTION.........008

4-9.

SATELLITE

COMMUNICATIONS

4-10.

DATA

COMMUNICATIONS

.....

4-11,

OPERATION

WITH

A

PERSONAL

COMPUTER

4-12.

VOICE

SYNTHESIZER

..

.

4-13,

1200MHz

IF

CONNECTOR

AND

ACCA

CONNECTOR

....cccsceseesereeeeteeeeeeteeeeseeee

48

DHADOAHEAAW

5.

BLOCK

DIAGRAM

AND

CIRCUIT

DIAGRAM..49

5-1.

BLOCK

DIAGRAM

6-1.

6-2.

SERVICE

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

6-3.

CLEANING...

6-4.

IN

CASE

OF

DIFFICULTY..

6-5.

ORDERING

SPARE PARTS

6-6.

ADJUSTMENTS

7.

OPTIONAL

ACCESSORIES

.............:cceeereee

66

7-1.

VS-2

VOICE

SYNTHESIZER

INSTALLATION.

.

220.00.

2cccectessanceceitieece

es

66

7-2.

TSU-5

PROGRAMMABLE

TONE

DECODER

UNIT

INSTALLATION............

66

7-3.

UT-10

1200MHz

UNIT

INSTALLATION

..67

7-4.

OTHER

ACCESSORIES...

eeeeeeeees

69

8.

REFERENCE

1.

Ay

WARNING

|

BEFORE

OPERATION

TO

PREVENT

ELECTRIC

SHOCK,

FIRE

AND

OTHER

INJURY.

PLEASE

NOTE

THE

FOL-

LOWINGS:

Do

not

place

this

unit,

where

it

will

be

exposed

to

Do

not

drop

pieces

of

metal,

needles,

coins

and

other

direct

sunlight

or

close

to

heating

appliances.

electrically

conductive

materials

into

the

unit.

Do

not

touch

the

power

plug,

when

your

hands

are

wet.

To

ensure

good

ventilation,

do

not

put

anything

on

top

of

the

cabinet

and

allow

at

feast

15

cm

(6

inches)

Do

not

puil

the

power

cord,

when

disconnecting

it

of

space

behind

the

unit.

from

the

AC

wail

outlet.

Grasp

the

plug

and

ensure

that

your

fingers

do

not

touch

the

live

pins.

Do

not

place

the

unit

in

areas

of

excessive

dust,

high

humidity

or

on

unstable

surfaces.

If

an

abnormal

odor

or

smoke

is

detected,

immediately

turn

the

power

off

and

pull

out

the

power

plug.

Con-

tact

the

KENWOOD

service

station

or

your

dealer.

BENwaCe

To

avoid

risk

of

electric

shock,

under

no

circum-

stances

should

the

unit

be

opened:

CLEANING

1.

Turn

the

power

off,

before

cleaning

the

unit.

2.

Do

not

use

any

type

of

abrasive

pad,

thinner,

ben-

zine

or

any

substances

which

may

damage

the

unit.

3.

Wipe

the

front

panel

and

other

exterior

surfaces

of

the

unit

with

a

soft

dry

cloth

or

a

soft

cloth

lightly

moistened

with

water.

SPECIFICATIONS

AND

ACCESSORIES

2-1.

SPECIFICATIONS

—

Model

i?

I

:

Specifications

TS-790A

TS-790E

2

m

band

ae

144~148

MHz

144~146

MHz

|

Frequency

range

___70

cm

band

430~450

MHz*1

|

430~440

MHz

|

tn,

23

cm

band

____

1240

~

1300

MHz

(Option)

_Mode

_

2.5

J3E

(LSB,

USB),

A1A

(CW),

F3E

{FM}

|

'

Antenna

impedance

50

ohms

-

Power

requirement

7

13.8

VDC

+15%

i

j

=

Grounding

-

et

Negative

~

3

Receive

made

with

no

input

signal

2.54

a

c

=

pa

ae

|

Current

drain

2m

band

ae

128

=e

|

Transmit

mode

70

cm

band

15A

|

i

t

23cmband

BA

Operating

temperature

-

?

-10

to

+50°C

(+14

to

+122°F}

|

Frequency

stability

(Except

FM

mode}

Less than

+3

PPM

.

arn

pete

342x134x

369mm

__

Dimensions

(Wx

H

x

D)

(Projections

eluded)

_—

(13-15/32”

x

59/32"

x

14-17/32”)

|

__.

Weight

fe

9.2

kg

(20.2

Ibs}

LSB-USB

35

W

i

2

m

band

SE

See

eta

a

!

FM-CW

45

Ww

i

f—___

eee

ree

Output

power

i

LSB-USB

30

W

|

one

70

cm

band

aes

—-

|

:

FMCW

40

W

'

|

23

cm

band

LSB,

USB,

CW.FM

|

10

W

2:

;

'

LSB,

USB

'

Balanced

modulation

&:

Modulation

:

=

FM

j

Reactance

modulation

2

pi

ae

2

m/70

cm

band

Less than

—

60 dB

©

Spurious

radiation

:

23

cm

band

i

Less than

—50

dB

;

Carrier

suppression

i

More

than

40

dB

(with

1.5

kHz

reference)

Unwanted

sideband

suppression

|

More

than

40

dB

(with

1.5

kHz

reference)

:

Maximum

frequency

deviation

(FM)

+5

kHz

Frequency

response

(—6

dB)

(SSB

mode

only}

ns

ee

ol

ape

400

to

2600

Hz

2

;

Microphone

impedance

600

ohms

LSB-USB-CW

Single

conversion

superheterodyne

2m

band

i

:

as

i

FM

Double

conversion

superheterodyne

|

LSB-USB-CW

Double

conversion

superheterodyne

i

Circuitry

70

cm

band

-

eae

FM

Triple

conversion

superheterodyne

LSB-USB-CW

Triple

conversion

superheterodyne

i

23

cm

band

2

ae

ate

:

FM

Quadruple

conversion

superheteradyne-

;

MAIN

j

ls

1st

IF

2nd

IF

3rd

IF

ath

iF

!

eee

=e

18

[2m

band

10.685

MHz

|

*

455

kHz

-

=

Lo

L

xi

RSS

=i

ae

ee

|

ie

70

cm

band

75.925

MHz

|

10.695MHz

©

*

455

kHz

|

pee

|

23

cm

band

287.175

MHz

41.415

MHz

10.695

MHz

|

*

455

kHz

|

Intermediate

|

frequency

SUB

RX

|

1

st

IF

2nd

IF

ad

iF)

Ath

IF

|

2m

band

10.595

MHz

|

*

455

kHz

|

s

=

70cm

band

|.

75.925

MHz

10.595

MHz

|

*

455

kHz

=

!

23

cm

band

|

287.075

MHz

|

41.315

MHz

10.595

MHz

*

455

kHz

*

:

FM

only

4

LSB,

USB,

CW

2mband

‘lla

Less than

0.16

nV

)

oe

hi

|

70

em

band

;

~

Less

than

0.16

nV

Sensitivity

i

23

cm

band

;

Less

than

0.16

wv

2

m

band

;

Less

than

0.22

pV

Shan”

a8

70

cm

band

ee

Less

than

0.22

»V

“

Ee

23

cm

band

Less than

0.22

uV

iss,

USB

—6

dB:2.1

kHz,

—60

dB:

4.8

kHz

Selectivity

FM

~6

dB:12

kHz

,

60

dB:

24

kHz

3

;

cw

___

=

8

dB:500

Hz

,

~

50

dB:

2

kHz

‘s

2m

band

.

_____

More

than

65

dB

;

j

e

_

Image

ratio

|

70

cm

band

;

More

than

60

dB

|

}

|

23

cm

band

7

More

than

55

dB

]

|

IF

SHIFT

variable

range

7

More

than

+0.9

kHz

RIT

variable

range

eel

adc

beceantes

Lee

me

ae

FM

-

+9,9

kHz

ae

LSB,

USB,

CW

~~

Less

than

0.20

zV

;

Squeich

sensitivity

oes

ci

;

_

FM

-

Less

than

0.16

pV

Output

1.5

W

across

8

ohms

load

(10%

distortion)

“Output

load

impedance

:

-

i

a

8

‘ohms

:

Notes:

—

1.

*1:

Frequency

range

for

M2

type

is

480

~

440

MHz.

2.

Circuit

and

ratings

are

subject

to

change

without

notice

due

to

advancements

in

technology.

2-2.

ACCESSORIES

Unpack

your

TS-790A/790E

carefully

and

confirm

that

it

is

supplied

with

the

following

accessories.

Dynamic

microphone...

.+.-191-0352-15...

.1

ea.

DIN

plug

(7-pin)

....

.«-E07-0751-05...

1

ea.

DIN

plug

(13-pin)

.....

---EO7-1351-05...

1

ea,

DC

power

cable

assembly.

-E30-2065-05

«1

ea.

Fuse

(15A)

-FO5-1531-05

7

ea.

Connector

cabie

for

the

Tone

unit

(Except

U.K.

and

Europe

version)

...£E31-3453-05

.1

ea.

Control

location

sticker

B42-3314-04...

1

ea.

External

control

Instruction

Manual

.

-...B50-8262-XX

....

...1

copy

Instruction

Manual

..0.........ccceeeeseee

-BS0-8254-XX

..

-1

copy

Warranty

card

(U.S.A.

and

Europe

version

Only)

...........::ccesecssseessececeeseccceccecceesensauseseeavaseccussecsees

1

ea.

After

unpacking

Shipping

container:

Save

the

boxes

and

packing

in

the

event

your

unit

needs

to

be

transported

for

remote

operation,

maintenance,

or

service.

3.

INSTALLATION

AND

CONNECTION

3-1.

INSTALLATION

FRONT

FEET

=

By

extending

the

front

feet,

the

front

panel

can

be

|

elevated

for

operating

convenience.

:

|

Turn

the

front

feet

left

and

pull

down.

Wis

Then

turn

right

to

lock.

s

8

Front

feet

extension

3-2.

CONNECTION

The

TS-790A/790E

requires

more

than

154

at

13.8

VDC

when

transmitting

at

full

power.

Use

the

PS-31

power

supply

for

fixed

station

operation.

A.

Rear

Panel

oF

Option

To

430/440

MHz

antenna

To

144

MHz

antenna

To

AC

outlet

Sepa

(1)

Antenna

Caution:

on

Protect

your

equipment—Use

a

LIGHTING

AR-

RESTER.

The

type

of

antenna

that

is

used

will

greatly

affect

the

performance

of

the

transceiver.

Use

a

properly

ad-

justed

antenna,

of

good

quality,

to

enable

your

trans-

ceiver

to

perform

at

its

best.

The

antenna

input

impedance

is

50

ohms.

Use

50-ohm

coaxial

cable

such

as

5D-2V

for

this

connection.

If

the

antenna

is

far

from

the

transceiver

the

use

of

low

loss

coaxial

cable,

such

as

5D-2V

is

recommended.

Match

the

im-

pedance

of

the

coaxial

cable

and

that

of

the

antenna

so

that

the

SWR

is

less

than

1.5

to

1.

The

protection

circuit

in

the

transceiver

will

activate

if

the

SWR

is

particularly

poor

(greater

than

3

to

1).

High

SWR

value

will

cause

transmitter

output

to

drop,

and

may

lead

to

TVI

or

BCI

reports.

(2)

Grounding

Caution:

~

-

Never

use

a

gas

pipe

or

electrical

conduit

pipe.

Notes:

—

1.

A

ground

connection

that

is

a

1/4

wavelength

or

its

multiple

may

provide

a

good

DC

ground,

but

it

will

not

provide

a

good

RF

ground.

2.

A

city

water

pipe

cannot

be

used

as

a

good

earth

in

some

cases.

Making

a

good

earth

connection

is

important

for

preventing

dangers

such

as

electric

shock

and

for

emitting

a

high

quality

signal

with

minimum

spurious

radiation.

Bury

a

commercially

available

ground

rod

or

copper

plate

under

the

ground

and

connect

it

to

the

GND

terminal.

A

thick

wire,

cut

as

short

as

possible,

should

be

used

for

the

connection.

To

make

a

good

earth

connection,

connect

the

GND

terminal

to

a

grounded

metal

water

pipe.

(3)

External

speaker

The

TS-790A/790E

includes

a

built-in

speaker.

If

you

would

like

to

use

an

external

speaker,

such

as

the

SP-31,

it

may

be

connected

to

the

EXT

SP

jack

on

the

rear

of

the

radio.

The

speaker

may

be

any

good

8

ohm

permanent

magnet

type

speaker.

The

diameter

should

be

at

least

4

inches

for

good

audio

quality.

If

you

plan

on

using

a

speaker

other

than

the

SP-31

it

should

be

equipped

with

a

miniature

phone

jack

plug.

(diameter

3.5

mm)

(4)

Key

connection

Your

key

should

be

connected

as

illustrated

in

the

figure

below.

When

using

an

electronic

keyer,

make

sure

that

polarity

is

set

for

positive.

Always

use

shieid-

ed

line

from

the

key

to

transceiver.

(diameter

3.5

mm

Before

connection,

check

that

the

polarity

is

correct.

The

KEY

jack

pro-

vides

+5.5

V.

Use

shielded

cabie,

Key

connection

B.

Front Panel

Microphones

{1}

Headphones

Any

low-impedance

(4-16

ohms)

headphones

may

be

used

with

the

transceiver.

Connect

the

headphones

to

the

front

panel

phone

jack,

(diameter

6.0

mm).

The

optional

HS-5

or

HS-6

headphones

are

best

suited

for

use

with

the

transceiver.

Stereo

type

headphones

can

also

be

used.

{2)

Microphones

Any

microphone

with

an

impedance

between

6000

may

be

used

with

this

transceiver.

The

KENWOOD

microphones

MC-43S

(handheld),

MC-60A,

MC-80,

MC-85

(table-top

type)

are

recommended.

(3)

Voice

Controller

We

recommend

the

use

of

VOX-4,

if

voice

operated

keying

is

desired.

Simply

connect

the

MIC

cable

of

the

VOX-4

to

the

MIC

jack.

4.

OPERATION

4-1.

OPERATING

CONTROLS

4-1-1.

Front

Pane!

Wy

SoS

“a

|

EOE

ee

:

emai

a

tg;

eoo

ton

ooo

lpg

illo]

oe

com

Os

S

el

*

@

POWER

switch

Press

to

turn

the

power

ON

or

OFF.

(2)

Meter

During

receive

the

meter

is

used

as

an

S-meter.

Dur-

ing

transmit

the

function

of

the

meter

is

controlled

by

the

Meter

switch

@,

and

provides

either

ALC

tevel,

or

RF

(power)

readings.

(@)

MODE

keys

These

keys

are

used

to

select

the

desired

mode

of

operation.

In

CW

mode

the

CW/N

key

is

also

used

to

select

the

desired

filter

bandwidth.

When

a

MODE

key

is

pressed

the

first

character

of

that

mode

will

be

sounded

in

Morse

cade

thru

the

internal

speaker.

This

announcement

can

be

inhibited

by

following

the

in-

structions

in

Section

4-2-5.

FM/AUTO

key:

Press

the

FM/AUTOQ

key

to

alternate

between

FM

and

AUTO

made.

(Please

refer

to

Section

4-2-4.)

USB/LSB

key

:

Press

the

USB/LSB

key

to

alternate

between

USB

and

LSB.

CW/N

key

:

Press

the

CW/N

key

to

alternate

be-

tween

CW

(SSB

filter}

and

N

{narrow}.

@

Indicators

ON

AIR

:

Lights

during

transmit.

MAIN

BUSY:

On

whenever

the

squeich

is

open.

F,

LOCK

:

Light

when

the

F.

LOCK

switch

is

ON.

SUB

BUSY

:

On

whenever

the

squelch

is

open.

ALT

:

Lights

when

the

1200

ALT

switch

is

ON.

{1200

MHz

FM

only)

©)

MAIN

Display

Panel

The

fluorescent

display

tube

displays

operational

in-

formation

such

as

the

operating

frequency,

memory

channel

information,

and

RIT

information.

(See

page

16.)

©)

MAIN/SUB

indicators

MAIN:

Lights

when

the

MAIN

key

is

ON.

SUB

__:

Lights

when

the

SUB

key

is

ON.

@

FUNCTION

keys

MAIN

:

Used

to

set

MAIN

frequency

and

mode.

SUB

:

Used

to

set

SUB

frequency

and

mode.

A/B

:

Selects

VFO

A

or

VFO

B.

VFO/M

:

Used

to

switch

between

memory

or

VFO

operations.

MAIN

®@

SUB:

Used

to

exchange

data

between

the

MAIN

band

and

the

SUB

band.

A=B_

:

Equalizes

the

frequencies

and

modes

of

VFO

A

and

VFO

B.

SUB

RX

Display

Panel

The

LCD

Provides

operational

information

such

as

the

operating

frequency

and

memory

channel

information.

(See

page

17.)

@)

[MAIN]

MUTE

switch

Used

to

attenuate

the

MAIN

audio

by

12

dB.

When

turned

on,

the

indicator

on

the

right

of

the

switch

will

turn

red.

When

off,

indicator

is

green

if

an

incoming

signal

is

present

that

opens

the

squelch.

(See

6-6-3,

MAIN

audio

mute

control.)

Caution:

Se

ee

The

indicator

will

not

light

when

a

signal

is

weak

or

absent.

RIT

switch

Press

to

turn

the

RIT

ON

or

OFF.

(MAIN

band

only)

@)

AGC

FAST

switch

This

switch

selects

the

operating

time

constant

of

the

AGC

(Automatic

Gain

Control)

circuit,

When

the

AGC

switch

is

set

to

SLOW

(

I

),

the

receiver

gain

and

S-

meter

readings

will

react

slowly

to

large

input

changes,

and

when

set

to

FAST

(

=

),

the

receiver

gain

and

S-meter

will

react

quickly

to

changes

in

the

input

signal

level.

The

normal

position

when

using

all

modes

is

the

SLOW

position.

When

working

any

of

the

following

you

might

wish

to

use

the

FAST

position.

*

When

tuning.

*

When

receiving

weak

signals.

*

When

a

high-speed

CW

signal

is

being

received.

Note:

—

~

2

=

-

This

switch

is

disabled

during

FM

Operations.

@

NB

switch

For

pulse

type

noise,

such

as

generated

by

automo-

tive

ignition

systems,

turn

the

NB

switch

ON.

When

pulsating

noise,

such

as

that

caused

by

automo-

bile

ignitions

is

encountered,

place

the

NB

switch

ON.

This

switch

will

not

help

to

eliminate

atmospheric

or

line

noises,

only

pulse

type

noise.

Note:

-

This

switch

is

disabled

during

FM

operations.

@®

[SUB]

MUTE

switch

Used

to

attenuate

the

SUB

audio

by

12

dB.

When

turned

on,

the

indicator

on

the

left

of

the

switch

will

turn

red.

When

off,

indicator

is

green

if

an

incoming

signal

is

present

that

opens

the

squelch.

(See

6-6-2,

SUB

audio

mute

control.)

Caution:

-

oo

ee

=

The

indicator

will

not

light

when

a

signal

is

weak

or

absent.

@

[SUB]

AF

gain

control

Turn

the

knob

to

increase

or

decrease

the

volume.

Clockwise

rotation

increases

the

volume

and

counter-

clockwise

rotation

decreases

the

volume.

Note:

-

wan

~

The

output

level

of

the

“‘Beep’’

is

not

affected

by

the

setting

of

the

AF

gain

control.

Kenwood TS-790A User manual

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