MFJ MFJ-949C Manuel utilisateur

/Z-—

21-88

MFJ-949C

VERSA

TUNER

MODEL

MFJ-949C

OWNER’S

MANUAL

CAUTION:

Read

All

Instructions

Before

Operating

Equipment.

MFJ

ENTERPRISES,

INC.

BOX

494,

MISSISSIPPI

STATE,

MS.

39762,

USA

(-\

BO,

RPRISES,

INC

RRR

ALLY

RIES

MFJ-949C_

DELUXE

VERSA

TUNER

INSTRUCTIONS

GENERAL

INFORMATION

The

MFJ-949C

designed

match

virtually

any

transmitter

al-

most

any

antenna,

including

dipoles,

inverted

vees,

verticals,

mobile

whips,

beams,

random

wires,

and

others

fed

coax

lines,

balanced

lines,

single

wire.

1:4

balun

built

for

connection

balanced

lines.

sSntenna

selector

switch

provides

versatile

antenna

selection.

ohm

dummy

load

built

for

easy

transmitter

tuning.

The

MFJ-949C

will

handle

300

watts

output

power

from

the

transmitter

from

160

through

meters.

The

MFJ-949C

employs

cross

needle

meter

forward

power,

reflected

power,

and

SWR

can

read

simultaneously.

THE

SWR/WATTMETER

The

meter

the

MFJ-949C

can

used

with

the

tuner

it-

self.

use

the

meter

without

the

tuner,

set

the

ANTENNA

SELECTOR

Coax

Direct

Coax

Direct.

The

MFJ-949C

utlilizeswamc

losses

meter

FORWARD

power,

REFLECTED

power,

and

SWR

can

pie

multane-

ously.

The

range

for

both

FORWARD

and

REFLECTED

power

either

watts

300

watts.

<it

willl

read

SWR

1sto

read

transmitter

output

power,

set

the

desired

range

either

watts

300

watts.

Transmit

steady

carrier

and

read

the

FORWARD

power

the

FORWARD

scale

and

the

REFLECTED

power

the

REFLECTED

scale.

SWR

indicated

the

crossing

point

the

two

needles.

While

transmitting,

read

SWR

from

the,SWR

line

nearest

the

crossing

point.

The»

meter-lamp

can

power,

12V

source.

Use

a)255mm

plug

with

the

tip

the

plug

connected

the

positive.

The

ANTENNA

SELECTOR

switch

alows

selecting

two

coax

antennas

either

direct/of

through

the

tuner,

balanced

line

atnenna

wire

antenna

built-in

ohm

dummy

load.

The

ohm

dummy

load

rated

300

watts.

CAUTION:

NOT

continously

key

for

than

minutes

time.

NOT

operate

the

antenna

switch

while

trans-

mitting.

NOT

use

the

MFJ-949C

for

over

300

watts

output

power,

even

the

Direct

Coax

Dummy

Load

positions.

INSTALLATION

Ie.

Install

the

MFJ-949C

between

the

transmitter

and

the

antennas.

coax

line

connected

the

transmitter

andthe

50-27

7coax

connector

marked

TRANSMITTER

the

tuner.

I4e

One

two

coax

fed

antenna

may

connected

the

SO-239

EVakeCOnneet

SemMaGKxeds

COaxs

@andsGoaxne

.SyiNOTE:97

Coax

and

Coax

antennas

can

connected

directly

the

transmitter,

amd

by-passing

the

tuner

setting

ANT.

Sel-

ector

Coax,

Diréct

orWCoax

Direct,

respectively.

Sc.

random

wire

antenna

may

connected

the

five-way

binding

post

marked

WIRE.

The

random

wire

should

long,

high,

and

clear

surrounding

objects

possible.

For

optimum

operation,

length

random

wire

antenna

sho-

Pideoey

judrter

wave,

Ore

longex’

Ofethes

operating,

frequency.

not

ground

the

random

wire

antenna.

Make

sure

that

the

tuner

well

grounded

the

transmitter.

£ive-

way

binding

post

marked

GROUND

provided

for

ground

connection.

balanced

line

fed

antenna

may

connected

the

two

five-way

binding

posts

marked

BALANCED

LINE.

jumper

wire

from

the

WIRE

binding

post,

indicated

dotted

line

the

MFJ-949C,

should

connected

one

the

postS

the

BALANCED

LINE.

This

couples

the

MFJ-949C

mene

bavanced=-Line

through:

“asls4

balun.

NOTE:

Either

balanced

line

random

wire

antenna

can

connected

one

time.

random

wire

antenna

used,

make

sure

that

there

not

jumper

wire

between

WIRE

and

BALANCED

LINE.

USING

ELHE,

=949C

The

INDUCTOR

switch

the

MFJ-949C

represents

minim-

inductance

positionA

and

maximum

inductance

position

Less

inductance

needed

high

frequencies

than

low

frequencies

for

the

same

impedgnce.

The

TRANS-

MITTER

and

ANTENNA

controls

both

represent

maximum

cap-

fetcance

position

For

optimum

operation

the

MFJ-949C,

BeaecmeLaisiitter

must

Luned

for

ohm

output

impedénce

POLetnewrrequency

band

Operation.

Set

ANT.

SELECTOR

switch

BomvUMNnyeuOdC

LOG

Luning

the

transmitter.

NOTE:

Always

tune

the

transmitter

low

output

power.

Pape

puOpecmlyecuning

Lhe

transmitter,

set

Antenna

Selector

the

desired

antenna

and

tune

the

tuner

for

minimum

SWR

descitbed

below.

NOT

readjust

the

trans-

Names

Get

OadCdanGgecOnLr1Ol

Setting

aiter

the

ohm

load.

Seueunew

RANSMELIER

and

ANTENNA

controls

3.5

(The

Sapdeteorewate

sical)!

-Opened

)’.

Rotate

the

INDUCTOR

control

until

maximum

noise

ob-

Tainead

With

your

transceiver

the

receiving

mode.

ShA

Witeremeransttt

tind

and

wath

the

INDUCTOR

control

set

the

same

for

step

alternately

adjust

the

TRANSMITTER

and

ANTENNA

controls

for

minimum

SWR.

Since

the

TRANS-

-MITTER

and

ANTENNA

controls

interact,

the

two

controls

can

best

adjusted

turning

the

TRANSMITTER

control

small

increment

time

and

the

rotating

the

ANTENNA

control

for

the

minimum

SWR.

Repeat

this

until

minimum

SWR

obtained.

SWR

reading

1:1

not

achieved,

increase

de-

crease

the

INDUCTOR

control

position

and

repeat

Step

32°

CAUTION:

“If”

arcing”

betweenscapaci

tor

spdates

occunss

increase

decrease

the

INDUCTOR

control

one

position

and

repeat’

Step

“NOTE:

SWR

1:1

cannot

achieved

this

point,

repeat

Step

for

each

INDUCTOR

control

position.

Again,

-do

this

the

tune

mode

or,

at.a.low

transmitter

power.

After

minimum

SWR

achieved,

the

transmitter

power

may

now

be.

increased’

300-watts.

@Thisstiuner

wile

reduce

the

SWR

of;

most

-antenna

Systems:

nearlyeises.

However

some

cases

1:1

SWR

may

not

achievable.

this

happens,

try

increasing

decreasing

length

antenna.

Note

that

1.5:1

SWR

results

only

re-

flected

power

and

11%

reflected

power

with

SWR

2:1.

SWR

1:1

can

occur

from

than

one

seteon,

contnon

settings

the

MFJ-949C.

When

SWR

1:1

obtained,

sure

check

the

transmitter

power

and

make

sure

that

the

transmitter

power

relatively

high.

the

trans-

mitter

power

has

decreased

substantially,

try

another

INDUCTOR

control

setting

and

repeat

Step

When

using

the

MFJ-949C

for

receiving

only,

tune

the

MFJ-949C

described

Step

and

Step2.

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dnLO’

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LINOdLO

O676-CAN

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GHONVIVE

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dedunl

ospy

I'T

CaONVIVE

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Mili

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FULL

MONTHS

WARRANTY

MFJ

Enterprises,

Inc.

warrants

the

original

owner

this

product,

manufactured

MFJ

Enterprises,

Inc.

and

purchased

from

authorized

dealer

directly

from

N‘FJ

Enterprises,

Inc.

free

defects

material

and

workmanship

for

period

months

from

date

purchase

provided

the

following

terms

this

warranty

are

satisfied.

The

purchaser

must

retain

the

dated

proof-of-purchase

(bill

sale,

cancelled

check,

credit

card

money

order

receipt,

etc.)

describing

the

product

establish

the

va-

lidity

warranty

claim

and

must

submit

the

original

machine-reproduction

such

proof-of-purchase

MFJ

Enterprises,

Inc.

the

time

warranty

service.

MFJ

Enterprises,

Inc.

shall

have

the

discretion

deny

warranty

without

dated

proof-of-purchase.

Any

evidence

alteration,

erasure,

forgery

proof-of-purchase

——

yy)

PPPPyyY

babidilidededededehele

shall

cause

void

any

and

all

warranty

terms

immediately.

——

MFJ

Enterprises,

Inc.

agrees

repair

replace

MFJ’s

option

without

charge

—

the

original

owner

any

defective

product

provided

the

product

returned

postage

‘(<5

prepaid

MFJ

Enterprises,

Inc.

with

personal

check,

cashier’s

check

money

order

for

$4.00

covering

postage

and

handling.

MFJ

Enterprises,

Inc.

will

supply

replacement

parts

free

charge

for

any

MFJ

pro-

duct

under

warranty

upon

request.

dated

proof-of-purchase

and

$4.00

personal

»<=

check,

cashier’s

check

money

order

must

provided

cover

postage

and

—

handling.

——

This

warranty

NOT

void

for

owners

who

attempt

repair

defective

units.

Techni-

—

cal

consultation

available

calling

(601)

323-5869.

—

This

warranty

does

not

apply

kits

sold

manufactured

MFJ

Enterprises,

Inc.

——

Wired

and

tested

board

products

are

covered

this

warranty

provided

only

the

—

wired

and

tested

board

returned.

Wired

and

tested

boards

installed

‘(<>

the

owner’s

cabinet

connected

switches,

jacks,

cables,

etc.

sent

MFJ

Enter.

5—

prises,

Inc.

will

returned

the

owner’s

expense

unrepaired.

—

Under

circumstances

MFJ

Enterprises,

Inc.

liable

for

consequential

damages

person

property

the

use

any

MFJ

product.

—)

Out-of-Warranty

Service:

MFJ

Enterprises,

Inc.

will

repair

any

out-of-warranty

pro-

duct

provided

the

unit

delivered

prepaid.

All

charges

will

shipped

COD

the

owner.

This

warranty

given

lieu

any

other

warranty

express

implied.

10.

MFJ

Enterprises,

Inc.

reserves

the

right

make

changes

improvement

design

manufacture

without

incurring

any

obligation

install

such

changes

upon

any

the

products

previously

manufactured.

11.

All

MFJ

products

serviced

in-warranty

out-of-warranty

should

addressed

MFJ

Enterprises,

Inc.,

921A

Louisville

Road,

Starkville,

Mississippi

39759,

USA

and

must

accompanied

letter

describing

the

problem

detail

along

with

copy

your

dated

proof-of-purchase.

This

warranty

gives

you

specific

rights,

and

you

may

also

have

other

rights

which

vary

from

state

state.

ididil(

ill

]

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