Kenwood AT-130 Bedienungsanleitung

The Model AT-130

designed to satisfy your

antenna-tuning requirements.

has been manu-

factured with the quality and performance that

makes Kenwood "The Pacesetter in Amateur

Radio".

This unit has been carefully engineered and manu-

factured under rigid quality standards, and should

give you satisfactory and dependable operation

for many years.

Should any trouble arise with this unit, please

contact the authorized

KENWOOD

dealer from

whom you purchased the item.

AFTER UNPACKING

Shipping Container: Save the boxes and packing

in the event your unit needs to be transported

for remoteoperation, maihtenance, or service.

The following explicit definitions apply in this

manual.

NOTE: If disregarded, inconvenience only.

No risk of equipment damage or per-

sonal injury.

CAUTION: Equipment damage may occur, but

not personal injury.

FEATURES

The AT-130

high performance H

antenna

tuner and

modification of the popular

AT-200 antenna tuner. The AT-130 is sma!l

and light, and is suitable not only for opera-

tion in your HAM shack but also for mobile

or field operation.

The AT-130consists of an antenna coupler,an

SWR

meter, and an antenna switch.

The AT-130 is designed to be used on the

Amateur bands between3.5 MHz and 30 MHz.

Antenna MATCHING or THROUGH opera-

tion is BAND-switchselected.

5. The SWR meter operates in both THROUGH

and MATCHING modes.

A mounting bracket is included for mobile

operation.

The panel meter can be illuminated

external power source.

The antenna matching circuit

also effective

in reducing TVI since

acts

band-pass

CONTENTS

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

AT-130 Specifications

Section 1. Preparation for Use

..........

....

Section

Controls and their functions

Section

Operation

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

Section

Circuit Description

..........

Section

Additional Information

.....

Schematic Diagram

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

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Accessories:

Carefully unpack your AT-130 Antenna Tuner

and verify the following accessories are included.

Operating manual

copy

Mounting bracket

(J29-0402-02)

piece

Mounting hardware

Screw,

mm diameter

...

pieces

Flat washer,

mm diameter

pieces

Lock washer,

mm diameter

pieces

Nut,

mm diameter

pieces

Wing Bolt,

mm diameter

(~09-0007-05)

pieces

Polyethylene washer

pieces

2P power plug

(~09-0203-25)

.. .

piece

Ground lug

(~23-0015-04).

piece

Cut end of cable even. Using a sharp

knife or razor, score and remove the

sheath

Don't cut the braid.

Slide the coupling over the cable, and

carefully solder the connector. Make

certain the insulation is not melted by

InterconnectionCable

To connect your

AT-130 with the TS-130S(V).

or other transceiver, an interconnection cable

required.

Refer to Figure1

-1 for details.

Meter LampPower (Figure

1-21

Power for the meter lamp

supplied from an

external power source. Use the supplied

plug for power-supplyconnection. Observe pola-

rity.

Figure

1-2.

Meter Light Power Connection

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SECTION

CONTROLS AND THEIR FUNCTIONS

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PULL

LAMP

ANTENNA TUNER AT-

130

Figure

2-1

Frontview

Meter

The meter reads SWR (standing-wave ratio) and

may be illuminatedby an external power source.

CAL (Calibrate)/SWR Switch

To measure SWR, first

set

this switch to the

CAL

(1)

position. Adjust the CAL control until

the meter pointer swings to the CAL line on

the meter scale.

Then depress the switch tothe SWR

(1)

position,

and read the SWR.

CAL (Calibrate)ControlIMeter Lamp Switch

Before measuring SWR, this control

used to

calibrate the meter. Adjust

described above

in item

The meter lamp lights when the

control

pulledON.

BAND Switch

Set this switch to the band in which you are

operating. The BAND switch also has

"THROUGH" position at which the antenna

connected directly to the transceiver. SWR can

also be measured

the THROUGH position.

CAUTION: DO NOT operate the band switch

while transmitting. Equipment

damage WI LLoccur.

RTUNE

The

TUNE adjusts the resistive component of

antenna impedance.

TUNE (~ransmit~unin~)Control

The

TUNE adjusts the reactive component of

antenna impedance.

Figure

2-2.

Rear View

Serial No. Plate

INPUT Connector

This plate

stamped with the Serial Number of The INPUT UHF connector accepts the H

input

your unit. signal fed from the antenna connector on the

GND post transceiver.

Connect the GND post to the transceiver GND

ANT

Connector

stud. Use

short

cable

possible, using the The ANT UHF

connector

accepts

the

antenna

supplied ground lug. coaxial cable.

12V

Accepts 12V DC for meter illumination. Use the

supplied plug.

NOTE: Viewed from the rear, the right terminal

is POSITIVE.

Measuringantenna system SWR

(i) Using an all solid-state transceiver (such as

TS-130sor TS-130V)

Before setting up the antenna coupler, first

determine the antenna system SWR.

Set the controls

shown inFigure3-2.Set the

BAND switch to the "THROUGH" position.

b. Inthe transmit mode, calibratethe meter with

the calibrationcontrol.

Depress the CALISWR switch to the

SWR

(1)

position and read SWR. If the SWR

lower

than 1.5:1 the antenna system impedance

sufficiently matched for practical use. If

above 1.5:1, tune the system.

NOTE: In the event of too high an SWR (over

10:

I),

check the antenna system for

breaks or

short circuit.

(ii)Using

tube power amplifier transceiver (such

TS-820)

Connect the transceiver (or transmitter) and

dummy load (orantenna)through the AT-1

shown inFigure 3-3. Before adjusting the antenna

coupler, you should first know the antenna sys-

tem SWR.

Connect the dummy load to the ANT connector

and adjust the transceiver (or transmitter) final

tuning. Then, replace the dummy load with the

antenna and measure the antenna-systemSWR.

NOTE: During antenna measurements, your

transceiver may be operating under

heavy loadingconditions.

Your signal may also interfere with

other stations. Use the least amount of

power possible, and complete measure-

ments as quickly as possible.

Ground lead

Figure 3-1. Interconnection

Coax.

BAND

TUNE

CAL

PULL

LAMP

ANTENNA

Switch out set

CAL

(

control

Figure 3-2. Switch Settings

Adjusting the Antenna Coupler

The antenna coupler

used to match a trans-

mitter to an antenna system when

its

SWR

too

high

(i.e.,

greater than

1.5:1

SWR).

Place the BAND switch to the same band

setting as your transceiver

(as

shown in Figure

3-41,

b. Set the CALISWR switch to the CAL

(I)

position.

c. Transmit and adjust the CAL control so the

meter indicatesCAL.

d. Place the CALISWR switch in the SWR

(,)

position.

Ncw you will measure the reflected power.

Adjust the R TUNE and

TUNE controls

alternately for

good minimum meter indica-

tion. Reflected power will be close to zero

good match

achieved.

Table

3-1

shows approximate control positions

for coupler adjustment.

Table

3-1

BAND(MHz1

TUNE

-p

ANT

System

Dummy load

TS-820

orother Transceiver

f--

.-a

000

AT-

120

ANT

First tune upon

oo!l

Dummy load.

Then check

I19

I I

oooll

antenna SWR.

necessary.

r71

Coax.

INPUT

Coax.

GroundCable

Figure

3-3.

Inter Connection

-Adjust

alternately for minimum

SWR

reading.

BAND

TUNE

PULL

LAMP

ANTENNA

TUNER

AT-

130

.',

Figure

3-4.

AT-130

Mobile Installation

Securely installthe Mobile Mount using four lock

washers, four flat washers, and four screws and

nuts. Install the AT-130 in the MobileMount by

four wing bolts and polyethylene washers. Adjust

the tilt before tightening the bolts.

Mounting

bracket

Figure

3-5.

Mounting bracket Detail

Figure

3-6.

Adjusting the Mounting Angle

Figure11 shows

block diagramof the AT-1

30.

Direcltional Coupler

The directional coupler samples forward and

reflectedpower fromthe transceiver tothe load.

Meter Circuit

The forward and reflectedpower sampled by the

directional coupler

used for SWR measure-

ment. Forward power

calibratedwith the

CAL

control so reflectedpower

read

SWR.

BandSelector Switch

This selects the band to which the matching

circuit

tuned. In the "THROUGH" position,

Idthe antenna

connected directly to the trans-

ceiver, bypassing the coupler, while

still

allowing

SWR measurement.

Antenna Coupler

The universal matching circuit

capable of

matching

300n

loads to the

50a

input

impedance.

ANTENNA

COUPLER

INPUT

METER

CIRCUIT

ANT GND

Figure

4-1.

AT-130 Block Diagram

DIREC-

TIONAL

COUPLER

-c

BAND

SELEC---c

TOR

General lnformation

Your AT-130 has been factory aligned and tested include

photocopy of the bill of

sale,

or other proof of purchase showing the

to specification before shipment. Under normal date of

sale.

circumstances, it wili operate inaccordance with

these operating instructions.

If your unitfails to work, contact the authorized

dealer from which you purchased it for quick,

Dear OM, if you desire to correspond on

technical or operational problem,

please make your note short, complete,

reliablerepair. and to the point. And PLEASE make

Attempting service without factory authorization

readable.

can void the unit's warranty. Please list: Model and serial number.

OrderingSpare Parts The question or problem you are

When ordering replacement or spare parts for having.

Please give sufficient detail to diagnose; other

your equipment, be sure to specify the following:

equipment in the station, meter readings and

Model and serial number of your transceiver, anything you feel might be useful in attempting

Schematic number of the part. Printed circuit diagnosis.

Service

You may return your unit for service either to

the Authorized Kenwood Dealer from whom you

purchased

or to Trio-Kenwood. A copy of the

service report will be returned with the unit.

Please do not send sub-assemblies or printed

circuit boards-send the complete unit, in

its

original boxes and packing.

You need not return accessory items unless they

are directly relatedtothe service problem.

Dial Litelnformation

Part

B30-9996-00

Rating 12V 40mA

To replace:

1. Remove top cover.

2. Note position of all leads on S meter and

lampP.C.B.

Remove

all

leads from meter and lamp

P.C.B.

If you want verification of receipt, please supply 4. Remove meter bracket.

self-addressed card (or letter) and we will

Remove

brass Philips screws holding

inform you of the date of receipt and estimated lamp P.C.B. to meter.

service time. 6. Swing P.C.B. rear edge up and out.

NOTE:

When claiming warranty service, please

Reverse disassembly procedure.

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