WEBSTER CHICAGO 79 - Page 2

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SERVICE

INSTRUCTIONS

FOR

WEBSTER-CHICAGO

MODEL

79 &

80

WIRE

RECORDER

MODEL

80

The

Webster-

Chicago

Wire

Re-

corder

Model

80

is

a

complete,

portable

wire

recorder

and

play-

back

unit,

consisting

of

a

wire

handling

mechanism,

oscillator,

amplifier

and

speaker,

all

enclos-

ed

in

a

sturdy,

attractive

case.

Provision

is

made

for

using

an

ex-

ternal

speaker

or

amplifier-

speak-

er (

public

address

system)

if

de-

sired.

Input

connections

are

pro-

vided

for

a

microphone

or

for

a

high

level

input,

such

as

a

radio

tuner

or

a

crystal

phonograph

pickup.

Accessories

include

a

high

impedance

Crystal

Micro-

phone

and

a

Power

Cord,

stored

neatly

in

a

compartment

in

the

cover,

also

two

15

minute

and

one

30

minute

spools

of

stainless

steel

wire

mounted

on

holders

in

the

cover.

Physical

Specifications —

17

3/8" x

11

3/8

"x

17

1/2

".

Weight

27

lbs.

complete.

RECORD-

LISTEN

SWITCH

MICROPHONE

VOLUME

CONTROL

1'

TONE

CONTROL

ON-

OFF

SWITCH

RUN-

REWIND

CONTROL

LEVER

OUTPUT

SELECTOR

SWITCH

Fig.

1 —

MODEL

80

WIRE

RECORDER

MODEL

79

The

Webster-

Chicago

Model

79

is

a

foundation

unit,

consisting

of

a

42

P090

ASSEMBLY

CHUCK-

WIRE

SUPPLY

SPOOL

RECORDER

HEAD

complete

wire

transporting

mech-

CHUCK

CAP

11

X

180

GUIDE

PIN

anism,

a

triple-

purpose

recording

45

P279

head (

records,

erases

and

plays

BUTTON

DRUM

NOTCH

back),

an

oscillator

coil,

a

15

min-

ute

spool

of

recording

wire,

and

CLIP

an

instruction

sheet

with

suggest-

ed

circuit

diagram.

The

service

information

on

the

Model

79

is

identical

to

the

service

informa-

tion

on

the

mechanical

portions

CONTROL

LEVER

of

the

Model

80

as

cont

ai

ne

d

in

42

X

092

this

manual.

The

unit

takes

any

standard

Armour

type

recording

spool

and

will

make

continuous

recordings

up

to

a

full

hour.

It

is

not

in

itself

a

complete

unit,

and

TOP

PLATE

is

supplied

to

meet

the

demand

11X

213

for

a

basic

unit

by

the

manufac-

turer,

experimenter,

amateur

and

professional

engineer

who

wishes

to

build

his

own

wire

recorder

and

player,

or

to

incorporate

it

in

a

public

address

system,

radio,

etc.

Physical

Specifications —

10

1/2 " x 83/4 " x 51/2

" (

31/2 "

below

main

plate,

2"

above.)

Net

Weight

10

lbs.

TAKE

UP

DRUM

COVER

ASSEMBLY

11X

181

CLIP

RELEASE

TAKE

UP

DRUM

42

P091

Fig.

2 —

MODEL

79

FOUNDATION

UNIT