Panasonic RF -4800 Operating Instructions Manual

•

n

Ions

MODEL NO. RF

-4800

FM/AM

10-BAND

COMMUNICATIONS

RECEIVER

Panasonic®

Read

these

instructions

completely

before

operating

this

set.

Your new Panasonic radio

receiver

RF-4800 was manufactured and assembled

under
exacting quality control standards.
The incorporation of the latest advances in radio design and the use

of

the most
modern components ensure outstanding performance with superb sensitivity and
tone quality.
Just a few minutes

of

your

time

spent reading carefully through these instructions

will

assure

your

obtaining optimum performance that

will

bring you continued

enjoyment

for

many years.

CONTENTS

LOCATION OF

CONTROLS...............................................................

3

POWER SUPPLY

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

3

ANTENNAS

.......................................................................•...........•

4

CONTROLS AND FUNCTIONS

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

5

RECEIVER OPERATION

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

7

ABOUT SSB AND

CW

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

8

ELECTROMAGNETIC-WAVE PROPAGATION

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

9

PRECAUTIONS

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

9

HELPFUL HINTS

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

9

SPECIFICATIONS

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

. ,

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

10

The

serial

number

of

this

product may be found on the

back

of the unit.

You should note the

serial

number

of

this unit in the space provided and retain this

book as a permanent record

of

your

purchase to aid in identification in the event of

theft.

MODEL

NUMBER

:_

.....

R

....

F_--"48...,O.."O'--_

SERIAL

NUMBER:

______

_

WARNING:

TO PREVENT FIRE OR SHOCK HAZARD,
DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.

-1-

-2-

LOCATION OF CONTROLS

o Power Switch

8 FM AFC/Band Width Switch

8 AM ANL (Automatic Noise Limiter) Switch

e AM Mode Switch
o Tuning/Battery Indicator

CD

SW1/MW/FMTuning Scale

8 SW1/MW/FM Tuning Control

fa)

SW2-8 Tuning Control

o Digital Frequency Display

Gl>

SW2-8 Calibrater

~

SW2-8 Tuning Scale

~

SW2-8 Band Selector

G) Main Band Selector

~

Earphone/External Speaker Jack

~

Recording Output Jack

~

Auxiliary Input Jack

~

Volume Control

(9

Bass Control

~

Treble Control

~

BFO Pitch Control

~

Light Switch

@)

Display Switch

@)

Indicator Switch

~

AM

RF

Gain Control

~

Antenna Trimmer

~

MW Ferrite-Core Antenna

~

FM Antenna Terminals

@)

MW/SW1 Antenna Terminals

@)

SW2-8 Antenna Terminals

~

Coaxial-Cable Antenna Jack

~

DC Input Jack

~

AC

Input Jack

POWER SUPPLY

Battery Operation:

• Open

the

battery

compartment

covers

by

pushing

each latch

as

shown

in Fig.

1.

•

lrisert

8

"0"

size

(Panasonic

UM-1

or

equivalent)

batteries,

observing

the

correct

polarity,

as

shown

in Fig.

2.

Place

the

cloth

bands

under

the

batteries

to

facilitate

easy

removal.

•

Replace

the

compartment

covers.

Note:

Make

sure

the

DC

Input~

and AC

Input~

jacks

are

dis-

connected.

-3-

To check the battery condition:

Set

the

Indicator

Switch@) to

"BATT"

position

with

the

power

on.

The

Tuning/Battery

Indicator0

then

shows

the

battery

condition.

NORMAL

.

FULL

BATT

Fig. 3

When

the

indicator

reads

in

the

"0"

range

as

shown

above

the

batteries

are

good.

\ I

\ /

WEAK

\~

3 I

~d8

\ I I

\

BATJJ:RY

FULL

Fig. 4

When

the

indicator

reads

in

the

"x"

range

as

shown

above

replace

all

the

batteries

with

new

ones.

AC Power Operation:

•

Connect

the

included

AC

power

cord

to

the

AC

Input

Jack~

and

to

your

household

AC

electrical

outlet.

On

plugging

the

power

cord

into

the

AC

Input

Jack~,

opera-

tion

changes

from

battery

or

external

DC

power

to AC.

III

111111111111

III

III

111111111111

III

III

111111111111

III

()

I!l

to

AC IN

Fig. 5

Car/Boat Battery Operation:

•

Insert

the

plug of a

car

battery

adaptor

cord

into

the

DC

Input

JackG.

• Plug

the

other

end

into

the

cigarette

lighter

socket

in

your

car

or

boat.

•

This

automatically

disconnects

the

internal

batteries

and

the

receiver

operates

on

external

DC

power

only.

Note: For the

connection

of an

adaptor

cord,

follow

the

instruc-

tions

provided

with

it.

ANTENNAS

FM:

Connect

the

accessory

compact

FM

antenna

to

the

FM

Antenna

Terminals~,

then

extend

and

fix

the

antenna

on

the

wall

near

a

window

by

using

three

push-pins

or

adhesive

tape

as in Fig. 6.

If

the

FM

station

is

still

weak,

connect a suitable

outdoor

FM

antenna

(impedance:

75 ohms) to

replace

the

compact

antenna.

(For

installation,

follow

the

instructions

provided

with

the

antenna.)

MW:

The

rear

ferrite

core

antenna

will

assure

excellent

MW

recep-

tion

in

most

areas.

If

the

stations

are

distant

or

if

the

signals

are

very

weak,

connect a suitable

length of

the

accessory

antenna

wire

to

the

MW/SW1

Antenna

Terminals~,

and extend. (See

Fig. 7.)

=

~

11111111

111111

11111

II

IIIIIIIIIWIIIII

! I

:=J

~

To fix, use p

ush-pins

ape

or

adhesive

t

111111111111

III

Fig. 6

111111111111

III

111111111111

III

~

g

n

~~

~

~

"

I!le!l

How

to

Connect

Antenna

Wires

to

the

Terminals

Push

~

Terminal~~

Q

W/

~¥

i

Insert

wire

Push

Fig.

8

Te,minal_r

C)

r

C)

~

Iir.

Push

~ert

wire

-4-

SW:

External

antenna

and

ground

connections

are

required.

Figs.10-

13

give

examples

of

outdoor

SW

antenna

installation.

For

SW1

reception,

connect

the

antenna

and

ground

wires

to

the

MW/SW1

Antenna

Terminals~;

for

SW2-8

reception,

connect

them

to

the

SW2-8

Antenna

Terminals~.

The

Coaxial

Cable

Antenna

Jack€!)

for

SW2-8

reception

may

be used to

connect

an

SW

antenna

with

a

coaxial

cable.

With

this

kind

of

antenna,

solder

the

accessory

metal

plug

to

the

end of

the

cable

as in Fig.

9.

Erecting

the

antenna

as

high

and as

far

away

from

noise-generating

equip-

ment

and

high

tension

cables

as

possible

improves

the

recep­tion.
To

avoid

danger

from

lightning,

it

is

strongly

advisable

to at-

tach a

safety

device

between

the

outdoor

antenna

and

the

receiver.

Fix a

knife

switch

(completed

connections

as

indicat-

ed in Fig. 14) as

near

to

the

receiver

entrance

of

the

antenna

lead

as

possible.

During

electrical

stroms,

short-circuit

the

antenna

to

ground

by

reversing

the

switch

to

the

ground

side.

jcore

.-Braided

Wire

Coaxial
Cable

-----Antenna

Wire

Antenna

Terminals

Plug
Cap

Fig. 7

Solder

core

Solder
braided

wire

Fig. 9