Zenith H723Z1 Operating instructions

Brand: Zenith

Model: H723Z1

Type: Operating instructions

Zenith H723Z1 offers complete radio reception at its best. It provides Frequency Modulation (FM) on the FM band, as well as standard broadcast reception, with the sound quality and performance perfected by Zenith engineers for this receiver. The receiver circuit utilizes an entirely new type of filter system and the new Selenium Rectifier, both of which help to provide increased output for better performance. This receiver may be operated on 50 to 60 cycle 117 volt Alternating Current (AC) or from 117 volt Direct Current (DC).

0lsrnting

$uiils

TO HEtP

YOU

ENJOY

YOUR

NEW

-LL/r-

e-r'L

AM-FM

RADIO RECEIVER

tYloDEL

H723Zr

AND OTHER

TIODEUi USING

GENERAL

This new

Zenith

Table Model Radio

offers complete radio reception

at its

best. It is designed to

provide Frequency Modulation

(FM)

on the

band, as well

as standard

broadcast reception.

A number of important new

features which add

to the

tone

quaiity

and

performance

have

been perfected

by Zenith engineers for this receiver.

The receiver

circuit utilizes an

entirely

new

type of filter

system

and

the

new

Selenium

Rectifier,

both of which help to

provide

increased

output

for better

rrcrformancc.

POWER SUPPTY

This rccciver may be

operated

(r0

cycle 117 r'olt

Alternating

Currcnt

(AC.) or from ll7 volt

Direct

Current

(DC).

NOTE: If receiver

does not operate within one minute when

connected to Direct

Current,

the

po*'er plug should be

ro'ersed

in the wall

socket. T'his procedure

should

also

be followed if a hum is apparent

when the receiver is operated

Alternating

Currcnt.

FREQUENCY

ITODUTATION

Radio

broadcast transmissions

are

two types,

Amplitude

Modulation

(Standard

Broadcast) and Frequency

Modulation (FM).

Frequency

Modulation

provides

a tremendous

improvement

the re-

rluction

interference

static.

most

installations,

particularly

those

not

too

distant from the

transmitting

station,

static of all

types

entirely

absen

F'requency

Modulation

allows

the

transmission

of not

only a greatly

in-

creased tonal

range,

resulting

hearing

musical

instruments

and

sounds

which

pre'iously

have

been unheard,

but

also

a greatly

increased

dynamic

range

that

allows

thc loudest

and

softest

fassages

heard in

their

true

roportions.

ANTENNA

For

STANDARD

BROADCAST

Your receiver

equipped

with

built-

in \7a'emagnet

which

eliminates

the need

for an external

antenna

under

aYerage

conditions.

hum is apparent

when

operating

the

receiver,

reverse

the

plug and

move the

cord away

from

the NTavemagnet.

cRouND

TERM|NAT

\ ,.-

F.M.

ANTENNA

l--r

TERMTNAI

,.^

. ,,*,

ANTENNA

Figure

Anlenno

Conneclionr

on bock

Wovenognel

For

FREQUENCY

MODULATION

The special built-in

Line

Antenna

dcsigned

for

IircqLrency

Modulation

reception

and in average locations

r.'"'here

fairly

strong signals are received

from

the transmitting

station, this

antenna

system

will

providc

excellent reception.

Be sure the AC

cord is

stretched

out

back

the

receiver.

not

coil or bunch

it up.

Also

try

the plug

both ways

the power socket for

the position

which

gives best

FM reception.

locations where eiectrical

interference

is experienced,

particularly

close to areas with

hear.y automobile

tralhc, or in locations

distant

from the

transmitting

stations aZenith FM

Antenna Kit

S14188

should be employed.

This Antenna

Kit may

purchased

from

your

Zenith

Dealer. To

connect

the lead-in

from the FM Antenna

Kit

S14188 to the receiver,

first

remove

the

line antenna

(blue

wire)

from the

"F"

terminal (see

Fig. l).

Connect

one side of thc lead-in

to the

"F"

terminal

and the other

side to the terminal

rnrrked

G."

DIAL

CALIBRATION

S]'ANDARD

tsROADCASI

BAND:'I'hc

bottom dial

scalc

is thc

broadcast

portior.r of

the

dial, and

calibratecl in kilocycles, minus

the l4st zero.

For

exarnplc, a station

listed

as operating

on 650 kilocycles will

be found

at 65

i'our

dial scale. A station listed at f.i50

kilocycles will

be tuned

ir.r

irt

l-'i5

ancl so on.

Usc

tiris

scrlc

when

the Band Switch is

set

to AM

1)osl

t tou

FREQUIINCY

MODULATION

BAND: Thc

station channcl

of thc

I:reclucncy

Modulation band cxtends

from 88 to 108 mcgacycles.

covcr

this

rangc thc Zcnith

clial

has onc I"M scalc. This

scalc is

used when

thc

Band

Switch

set

to l;M

position.

It is

calibratcd from

88 MC

to 108

MC.

TUNING

STANDARD BROADCAST

BAND:

I:igure

2 sho*'s

the position

Tr,rning antl

Volume Control

knobs.

place

the

instrument

operation,

tr,rrn thc

Volume Control

knob to the right.

This

will turn

on the set.

Allo*'about

scconds

for

thc tubes

to reach operating

temperature.

Set

thc

[Jlnri

Srlitch

thc AM position.

To tr-rne the

rcceiver,

turn the Tuning Control

knob slowly to

the de-

sirccl station

and rcacljust

the

Volume

Control

knob to the right or

left to

the clcsircd

volumc. To turn

thc receiver

OFF,

rotate the

Volume

Control

knob as far

as it

will

to the left, until

"click"

is heard.

Figure

Fronf Ponel

View

F'REQUENCY

MODULATION BAND: The receiver is turned

and

OFF

in the same

manner as in standard

broadcast

operation. The Band

S*'itch nrrst bc sct to

l"M

rrosition.

TUNING THE RECEIVER ON

THE FREQUENCY MODULATION BAND !yILL REQUIRE MORE

CARE

THAN

THE BROADCAST BAND. A hissinq sound may be

noted when

tuning between

Frequency

Modulation stations. This

normal,

and

will

disappear as the station

tuned

in.

After

station

is located, the

pointer should be

moved back and forth

over

it until the

point

quietest

reception and best tone

quality

is found.

Correct

tuning is indicated by

the disappearance of background noise.

Although Frequency

Modulation

stations are heard over great

distances

rare occasions, do not expect to

tune in

other

than

your

Iocal

stations.

The nature of Frequency Modulation

transmission

limits

reception

to areas

within the

approximate horizon.

Wa/rrntdf

ZenithRadioCorptrrationwarrantscachnew.Zen'ith

radio

recciver,

phonographic

repr"ducer'

()r

combrnatlon

{

thereof,

and

c'ach

ncw Zcnith

Quality

Tuhc

t".

free

from

de'fects

s'ttrkmanship

and

materiirl

arising

from

normal

usagc.

Its obligation

under

this

u'arranty

lim-

ited

replacing

any

part

')r partr

ilf

thc

reccivcr'

repro-

ducer

or'combinatiirn,

or rcplacing

tubes

p'hich,

within

ninety

(90)

days

from datc

purchase, -shall

be.rcturncd

tlac iluthorizcd

dcaler

frrtm

whtttn the

purchase

was

made

and

which shall

found

have

been thus

defec-

tive

in accordrtnce

with tlre

policies cstablished

Zenith

Radio

Corporatron.

The obligation

ttf

Zenith

Radio

Corporation

limited

rnaking

replacement

parts

available

the

purchaser,

and

does

not include

eithcr

the

making

or the

furnishing

ofanvlabtrrinconnecti<lnwiththeinsttrllationofsuch

rcplafement

parts nor

does it

include

responsibility

ft'i

\'--.

any

transportation

expense. \,

2enith'

Raclio

Corporation

assumes

no liability

and

t'rt

sh:rll

not be

liable

an1' respect

for failure

periorm

or deliry

performing

its

obligations

with respect.

the

above

warranty

if suih

failure

delay

results,

directly

orindirectly,i..,.unypreference,priorityor-alIcrcation

order

issued

the Government,

because

of any

other

act

thc G6vernment

or by

war, conditions

war,

-1

inadeouate

transportation

facilities,

conditions

weather,

acts

o? God,

strikes,

lockouts,

Sovernmental

controls,

tlr

Zeniths'

reasonable

requirements

for manufacturing

pur-

posest

any cause

beyond

.its

control

or occurring

with-

irut

its fault,

whether the

same

kind

or not.

Condifionr

ond

Erclurions

This

warranty

is expressly

in lieu

of all other

agreements

and

warranties,

expressed

or implied,

and

Zenith

Radio

Corporation

neither

assumes

nor authorizes

any

repre-

sentative

other

Person

assume

for it any

other

lia-

bility

in connection

with the

sale of Zenith

Radio

re-

reivers,

phonographic

reproducers,

or combinations

thereof,

or Zenith

Quality

Tubes.

The

warranty herein

shall

not apply

to any

receiver

parts

thereof

which

have been

repaired

or replaced

inyone

other

than an

authorized

Zenith

dealer,

service

contractor

distributor

which

have been

subiect

alteration,

misuse,

negligence

accident, or

to the

parts

any receiver

which has had

the serial

number

name

altered,

defaced

removed.

ZENITH RADIO

CONPORATION

zo2-898

Zenith H723Z1 Operating instructions

Zenith H723Z1 Operating instructions

Zenith H723Z1 Operating instructions

Related papers

Other documents