Hammarlund SP-600-J_SP-600-JX User guide

ISSUE

4-

OCTOBER

1952

,

GENERAL PURPOSE

COMMUNICATIONS

MODEL

MODEL

INSTRUCTIONS

The

Model SP-600-J Receiver does
Frequency
Book
Receiver, all indications
and

diagrams,

trol

Unit,

With

Control

is used in connection

with

shouldbeignored as

this exception

SP-600-JX

AND

SP-600-J

MODEL

SP-600-J

Unit.

referencetothe

the

When

with

the

in

the

theydonot

two

models are identical.

this Instruction

Model SP-600-J

text,

Frequency

RECEIVER

not

have

photographs

Con.

apply.

the

460

West

THE

34th

ISSUE

Manufactured

4

by

HAMMARLUND MFG. CO. INC.

St.

Prinl~d

New York

inU.S.

A.

1,

New York,

U.S.A.

FRONT

Sp-

F\G.

VIEW

eOO-JX

OF

IN

CA81N

RECEIVER

ET

TABLE

OF

CONTENTS

Title

Technical

I

II

III
IV

V

VI
VII
Table
Table
Table
Table
Table

Summary
General
Circuit

Installation 7

Operation

Maintenance

Alignment.
ConversionofTable

I-Tube
2-Tube
3-RF
4-Approx.
5-Parts

Description 5

Description 6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Model

Socket

Socket

and

List

HF

Signal

Voltages..

Terminal

Oscillator

InputsatIF

Receiver for

.

..

Resistances.........

Alignment

and

Rack

Mounting

..

.

..
.

Frequencies ; . . . .

AF

Stages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Page

, 20

..

4

8

10

14
15
17

21

Figure
Figure 2

Figure
Figure
Figure 5
Figure

Figure

Figure

Figure 9

Figure 10

Figure

11

Figure

12

Figure

13

Figure 14

ILLUSTRATIONS

Front

ViewofReceiver SP-600'
Block Diagram 7
Location

3

Audio

4

Selectivity
Rear

6

Top

7

Top

8

Bottom
Bottom
Bottom
Bottom
Circuit
Connection

of

Tubes

and

Overall Fidelity
Curves

ViewofReceiver. . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . .... . . . . . . . . . . . . .

ViewofReceiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

ViewofReceiver-Capacitor

ViewofReceiver-Tuning

ViewofReceiver

ViewofRF
ViewofFrequency

DiagramofReceiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Diagram-Receiver

and

Adjustments

Tube

]X,incabinet.

Curves.

SP·600·]X,

Platform.

Control

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

Shield and Spare Fuse

Unit

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

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

Unit.

Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

'.

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

Cover

Removed.

Shield

Removed.

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

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

..

18

..

18
19

..

25

..

27

..

29

..

30

..

31

..

33

..

35
Figure
Figure

Connection

15

Connection

16

Diagram-Tuning
Diagram-Frequency

Unit.

Control

Unit..........................................

[ 3 ]

, " .

37

39

GENERAL PURPOSE

MODEL SP-600-JX

COMMUNICATIONS

RECEIVER

TECHNICAL

SUMMARY

Electrical Characteristics

Frequency

Power
Output

Range-total

Band

1 .

Band

2 .

Band

3 : .

Band4.........................•..........••.................................

Band

5 .
Band

6 : .

Output-2.0

Impedance-6OO
Phone
600

jack-winding;

ohm

power

6

bands

watts,

with

less

than10percent

ohms-balanced split windings.

delivers15milliwattstoan

load is

adjustedto500 milliwatts.

distortion.

8000

ohm

resistive load,

when

the

Power Supply Requirements

Lil"

.~lting...........................

Power

Tube

RF,IFand

HF,
Crystal
Mixers

Detector,
AF
Power

Rectifier 1­Voltage

Consumption.

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

Complement-total

BFO

Amplifiers 7 -

2nd

Conversion

Controlled

and

HF

BFO

Oscillator.

"c" Bias Rectifier

Amplifier

Output

andIFOutput.

Regulator.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1 -

20

Oscillators 3 - 6C4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1 -

and

Noise

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-

95, 105, 117, DO,

Limiter&'Meter

190,210,234

..

130

watts,

Rectifier 3 - 6AL5

and

260 volt taps, 50·60 cycles.

1.25 amps.at117

.

.54to54.0
.54to1.35 me

to

1.35
to

3.45
to

7.40
to

14.80
to

29.70

audio

output

volts--maximum.

2 - 6BE6

1-

mc

3.45 mc

7.40 mc

14.8 me

29.7 me

54.0 mc

to

the

6BA6

6AC7

12AU7

6V6GT

5R4GY

OA2

Mechanical Specifications

Rack

Model­surface.
Table

Weight

Model-Dimensions;

Performance

Sensitivity is 2.3 microvolts,
10

db,at20

Image

rejection ratios are
TheIFrejection ratio at 600 kc is 2700 to
TheAVC
200,000 microvolts.

Dimensions; 19

66 lbs.

21%

Data-

milliwatts

action will maintain

(approximate

or

output

better

inches

inches wide,

better,

and

with

than

the

wide,

IOYz

inches

12~

values-takenona sample receiver)

throughout

the

RF

74

db

1.

output

the

Gain

throughout

constant

high

inches

high

entire

frequency

Control

at maximum.

the

frequency

within12db

and

16]/z inches deep from rack mounting

and

when

[ 4 )

171'8 inches deep.

range, for a signaltonoise ratio

range.

the

input

Weight

is increased from 2

87]/z Ibs.

of

to

GENERAL PURPOSE

COMMUNICATIONS

GENERAL DESCRIPTION

The

SP-600-]X is a20tube

with

self

Receiver
suffix in
is made using
are
insofar

steel, table model cabinet finished in dark grey

complement
ingina

operation

ing

primaryisprovided

range

is 130 watts.

loudspeaker receptionofAM

telegraph,

diversity applications.

over

in six bands.

control knob,

frequency

a small

band

indicator

hasanarbitrary

vernier

each frequency

and

design

exceptional

and

extremely close calibration accuracy

accurate resetability. A

locking action

main dial is 50to1

to

provided on all bands. Single conversion is used

signal frequenciesupto

employing a crystal controlled oscillator,

frequencies above 7.4 me.
tion,
meter

the

model

the

equivalentofmilitary
as is practicable.

The

receiver is suppliedineither

the

standard19inch

The

self

contained

from

current

The

The

a frequency

in use.

In

additiontothe

resetability.

The

vernier

The

the

Two

power

from90to

receiver is suitable

AM

standard

band

front

This

with

dial provides

single

to

permit

operating
dials.

tuning

main dial is 6to1.

stages

detector

rectifier,

contained

number

components

lighter

a single phase, 50to60 cycle alternat-

The

on
panel

the

tuning

without

ratio

of

andAVC

beat

grey

power

source.
with

270

volts.

MCW

model provides continuous coverage

range

large easily operated

the

front

andaband

window

control also aligns

proper

frequency

scale

whichinconjunction

continuous

band

for

control

maximum

ease.Itcontrols

An

anti-backlash gear

affecting

from

and

radio

frequency

Radio Communications

power

denotes

having

component

front

relay rack.

supply is designed

The

taps covering a line voltage

The

for

telegraph

from 0.54to54.0 megacycles

panel, selects

indicator

indicates

dial scale.

extremely accurate logging

is large

traverse

tuning

the

the

ratio

frequency

7.4 mc

and

Four
rectifier, noise limiter

supply.

that

characteristics

a well ventilated

panelorfor

power

power

either

headphone

radio telephone,

signals

visible

the

the

dial frequency

scales,
expanded

andofspecial

speed as well as

both

and

lock provides positive

the

frequency setting.

tuning

controltothe

from

the

amplification are

double conversion,

stagesofIF

oscillator

The

this

receiver

which

specifications

meunt-

transformer

consumption

and

band

change

the

desired

through

frequency

the

main dial

with

scales

the

train

provides

completely

vernier dial

for

amplifica-

and

buffer

to

fo~

or

CW

for

the

over

main

for

signal

and

I

amplifier,IFoutput,

]

stage are provided.

The

frequency control

channel
quencies
panel controls
stability continuously variable
six selected fixed frequency signals.
trolled fixed channel
set
crystal frequency desired
frequency control.
with
order
the

ference from ignition systemsorother
type
of

a balanced line.
95 ohms.
conventional single wire antenna.

loadorline
winding
output
circuit
signals
ohm

but
tion

ments
installations.

ranges between .001

quency depending on

very unusual degree of frequency stability
tuned
stability.

crystal

ranging

crystal filter embodies

have

Super

mechanical design.

crystal controlled operation

within

the

dial to

the

from

signal frequency

The

noise limiter circuit effectively limits

noise.

the

limiter.

The

antenna

The

audio

for

is approximately 2.0 watts.
when
attenuated

power

The

send receive switch desensitizes

leaves

between transmission periods.

Radiation is negligible

for

Frequency

HF

The

selectivity control provides

and

from

provedsoeffective

Pro

the

range from .75to54 mc.

permit

operationitis

the

signal frequency, switchtothe

These

receiver,

HAMMARLUND

The

output.

the

shipboard operation

oscillators

but

for

The

limiter switch permits optional use

input

The

receiver may alsobeoperated

output
and
balanced load operation.

three

Receivers, incorporated in an improved

circuit is designed

is provided

referredtoan 8000

approximately15db

poweronto

drift

aftera15

degrees

sharp

(.2 kc)tobroad

RECEIVER

AF

amplifier

the

selectionofthe

and

crystals are

may be purchased

which

circuit is designed

input

provide

and

percent

the

frequency used.

and

closely approaches crystal

of

the

same circuit features

and

and

output

unit

provides

on

tuningoreitherofthe

For

only

tune

with

MFG.

CO.

each istofunction.

sourcesofpulse

impedance is nominally

for

withafour

Maximum

The

ohm

below

for

complies

and

for

minute

desirable in

warmupperiod,

and

.01

percentoffre-

three

non-crystal selectivity

(13.0

power

for

fixed

any

six fre-

Front

normal

necessary to

not

for

terminal split

load provides

the

instant

with
multi-receiver

Hammarlund

high

crystal con-

the

delta

supplied

on

special

specifying

the

inter-

use

with

with

a 600

ohm

power

headphone

the

600

receiver

recep-

require-

This

is a

for

variable

degrees

kc).

The
that

of

a

[ 5 ]

CIRCUIT DESCRIPTION

General­Figure 13. A block diagram, Figure 2, is provided
more

clearly

the

various circuit sections.
tubesisshowninFigure
conversion, used
consists
V-2, First
four

stagesofIF

Vll,

Detector
V-IS,
AF

amplifier

V-17

and

Power

B
Voltage

In

the
frequencies above 7.4 me,
Second
the

Gate

Input

to

provide
mission line. A
antenna

RF
turretisemployedtochange
coil assembliesoftheRFamplifier
V-5

and
rectly
gang

tuning
assures maximum sensitivityathigh
ratio.

First

The

rotary

signofthe

capacitor

vide

frequency

to

a previously

First

V-3)-For

frequency
quency
variable
of

six crystal positions, is effectedbya
control. A second
mentofthe
or

minus .005

Intermediate

sionto455 kc is employed

7.4 me.
incorporating
circuit. Six positions
widthsof.2, .5, 1.3, 3, 8,
narrower
operation.
treme selectivity

adjacent

The

circuit is

show

the

for

signal frequencies

of

two

stagesofRF

Mixer

V-5,

First

amplification V-7, V-9, YolO

and

AVe

Beat

Frequency

V-16-A

the

Rectifier

Regulator

circuit

Heterodyne

tube

Coupling-The

optimum

maybeused.

Amplifier -

First

adjacenttotheir

capacitor

Heterodyne

turret

four

and

Heterodyne

services

operation, a crystal controlled

oscillator is provided.

to

crystal controlled oscillator

crystal oscillator frequency

There

bandwidth

The

interfering

and

Power

V-19,

V-18.

for

double

Oscillator

V-7.

coupling from a

balanced

An

Heterodyne

and

Oscillator-

band

gang,

rugged

stability

unattained

Oscillator-

requiring

front

percent

Frequency

are

four

the

Hammarlund

of

positions,

crystal

for

the

signals.

shown

arrangement

The

3.

Heterodyne

rectifier V-14, Noise Limiter

Oscillator

V-16-B,

Supply

C Bias Rectifier V-20

conversion, used

the

antenna

doublet

ingeniously designed

bands

Oscillator

respective sectionsofthe

their

change

twin

section, variable

construction

and

dial calibration accuracy

degree.

Instant

panel control permits adjust-

range.

Amplifier - Single conver-

for

signal frequencies below

stages

selectivity provide 6dbband-

and

phasing

high

schematically in

and

functions

locationofthe

The

circuit,

amplification

Oscillator V-4,

V-l3,IFoutput

Output

system

Second
V-8

which

Mixer

are

substituted

coupling is designed

95

or

andtoplace

V-I

and

V-4

respective tubes.

signaltonoise

(Variable

switch, advanced de-

throughout,

(Crystal

extremely stable, fixed

changeover from

of

IF

patented
13

kc.

the

crystal filter is in

control provides ex-

attenuation

various

for

single

upto7.4 me

V-I

Power

stage

includes

for

signal

V-6

ohm

trans-

straight

rotary

V-2,

Mixer

stages di-

V-4)-

tuning

Controlled

high

with

a choice

front

panel

over

a plus

amplification

crystal filter

On

the

of

closely

to

of

and
and

and

and

and

for

wire

the

four

This

pro-

fre-

three

II

for

Double conversion is employed

cies above 7.4 me.

by

the

me
V-4orV-3
signal is
Mixer

Oscillator

Detector

high level

circuit is provided
for
output
applications.

Beat Frequency Oscillator ­oscillator employs a
which

minimizes oscillator harmonics.
Oscillator
through
lator lock-in

injection
the
beat

Noise Limiter -

limits

other
switch

modeofoperation

present.

Audio
amplifier triode
signal from

Audio
transformer
to

deliver 2.0
load.
of

the
teletypeorsimilar service. A separate secondary wind­ing provides attenuated audio signal
phone
of15milliwatts into an 8000
the
wattstoa 600

IF

a 70

(455 kc)
chassis. A PL-259 plug
plied,

Power

partofthe

and

low pass filters
power
primary taps, covering a power line source range
90to270 volts, 50to60 cycles.
former

the

in

First

then

V-6

and

V-8,

andAVC-The

Detector

CW

and

terminals provide

gives a

von,

Buffer Amplifier V-12,

by

chassis. A

frequency, from zero

the

noise interference from ignition systems

sourcesofpulse

5-6, permits optional useofthe

Frequency Amplifier - A resistance coupled

Output-The

The

split balanced winding permits balancing

direct

operation.

600

ohm

Output

ohm

impedance source of intermediate frequency
to

are

used

Supply-The

the

e rectifierV-20,

transformerisprovided

and

primary

The

signalisheterodynedto3.955

Mixer

V-5

and

for

high

image rejection.

heterodynedto455 kcbythe

the

3.5 me Fixed

for

selectivity.

V-14

and

Ave

with

separate time constants

MCW

high

and

meansofa control locatedonthe

front

V-16-B, amplifies

the

detector.

coupled

watts un

currentinthe

power

ohm

- A cathode follower

socket,

for

receiver.Itincludes

and

filter components are protectedbyfuses

and

operation.

for

connections in diversity

high

capacity Colpitts circuit

orderoffrequency stability

is coupled into

which

permits variationofthe

Panel

control

beattoplusorminus 3 kc.

The

noise limiter circuit

type

noise. A separate control

when

pulse

audio

through

This

secondary is delivering 500 milli-

resistive load.

SO-

this

the

plate supply circuits.

a split, balanced

distorted

output

winding will deliver an

ohm

239,onthe

and

RG-ll/U

connection.

power

together

Voltage

signal frequen-

Heterodyne

The

Crystal

tube

is used as a

Rectifier.

Ave

The

beat

The

beat

the

detector
eliminates oscil-

beat

varies

limiteronany

type

interference is

the

audio frequency

output

outputtoa 600

supplyisan integral

Regulator

tube

circuit, as used

output

resistive load

V-16-A

rear

skirtofthe

cable,

the

B rectifier V -19

with

their

with

screw terminal

The

power trans-

Oscillator

3.955 me
Second

Controlled

TheAVC

and

Diode

frequency

and

frequency

circuit

oscillator

rear

the

audio

V-IS,

V-17, is

winding

ohm

for

for

head-

output

when

provides

not

sup-

respective

V-18.

The

of

or

of

[ 6 ]

Tuning

Meter-The

operationtoindicate

relative

the

tionofoutput

control is
to
erating
"MANUAL"
when
Power
clockwise

strengthofreceived signals. Depression

Meter

Switch

converts

level indbfrom 6 milliwatts.

RF

Gain

Control

provided

prevent

overloading

with

the

position.

the

switch is in

"ON-OFF"

extremityofthe

tuning

the

and

Power

for

AYC-MANUAL

switch is

meter is usedonA

accuracyoftuning

the

meter circuit

Switch -

The

manual controlofsensitivity

on

strong signals

switch in

This

control also operates

the"AYC"

position.

operatedatthe

RF

gain control.

3.5mc

CRYSTAL CONTROLLED

and

for

indica-

RF

when

counter-

YC

the

of

gain

op­the

The

Send-Receive
sensitizes
provide

for

the

receiver

instant

Switch-The

but

leaves

reception

send-receive switch de-

the

power

between

"on"

transmission

periods.

Convenience
is provided
tionofan accessory

Radiation ­high

frequency, second conversion crystal
frequency oscillators
negligible

on

point

Outlet

- A convenience power outlet

the

rearofthe

such

Advanced

so

that

chassis

for

the

as a lamporelectric clock.

design

has

and

shieldingofthe

reduced radiation

interferenceofthis

connec-

and

nature,
commoninmulti-receiver installations, is reduced
a minimum.

beat

to

to

a

to

VI

RF

6BA6

•BLOCK DIAGRAM'

Tubes

and

Packing-After

that

all

see

any

packing

Power

leadatthe

nectedtothe

tubes

material is removed from

Supply-Make

bottomofthe

tap

50to60 cycle

Antenna-The

socket,

UG-103/U,
transmission line.
and

connector

ceiver, are

be

used

desired

antenna

terminal
should

plug,

for

with

a balanced

to

operate
lead-in wire should
of

the

be

connected from

V2

RF

6BA6

V3

FFO

6Ar;r

CRYSTAL CONTROLLED

unpacking

are

firmly in

sure

their

that

power

which

most nearly agrees

power

source voltage.

input

impedanceatthe

is designedtomatch a 95

The

angle plug adapter,

use

UG-102/U,

with

RG-22/U

supplied

antenna

with

a single wire

be

connector

plug

the

other

andaground

FIG.

INSTALLATION

the

receiver

sockets

the

transformer

cable

installation.Ifit is

connected

and

that

the

receiver.

primary

tap

is con-

with

the

antenna

ohm

UG-I04/U,

with

the

re-

which

should

antenna,

to

the

one

lead

terminalofthe

IF

OUTPUT

2

III

connector plug

to

peak

the

of

the

to

to

of

the

adjacent

ing

unit.

Speaker-The
magnet dynamic
voice coil
connectiontothe
the

receiver.

not

used, connect a 600
terminals
transient
insertion
voltages,
sections
the

insertion circuit, such as a low resistance balancing

potentiometer, connected

Headphones-Either

---

••••••••••••

-----

antenna

to

Signal

Signal

•

the

ground

socketatthe

speaker shouldbeof

type

and

600

ohm

line matching

600

ohm

Caution:

When

ohm,2watt

avoid

voltages.
direct
jumper

600

ohm

component

For

current

connecting

output

in

highorlow impedance head-

V16B
AFAMP
12AU7

V15A

LIMITER

6AL5

path
path

".

cammon 10

tor

V17

OUTPUT

6V6GT

V15B

METER

6AL5

TO

OUTPUT

LEVEL

METER

01/

frequencies above 7.4 mc

terminal,

frequencies

• below 7.4 me

which

rearofthe

the

permanent

tun-

should include a speaker

audio

the

transformer

output

600

ohm

terminals

for

of

output

resistortothese

damage from

applications requiring

control

the

or
two

high

the

indicating

balanced

may be reMoved and

its place.

is

is

[ 7 ]

phones
jack, locatedatthe

The

table
in
protective·
bottom
standard19inch
See Section
position

Y6, are
supplied
in

order
operation, crystal units may be ordered from
MARLUND

specify

be
loosen
quency
spring
crystalsinthe
retainer

press
thumb
each crystal
chart

maybeusedbyplug

high

impedance

Mounting-The

or

rack mounting.

a well

Crystals

the

used. See

ventilated

rubber

cover

plates are supplied

VII.

which

permits

for

Frequency

not

supplied

on

special

rangeofthe

to

insure correct crystal controlled frequency

MFG.

the

signal

noteatendofTable5.To

the

knurled

Control

assembly

sockets,

spring

on

screw.

provided

assembly

topofthe

Mark

was

selected, in megacyclesonthe

for

connectiontothe

lower

left sideofthe

type

is recommended.

receiver is designed

Table

models are supplied

steel cabinet

feet.

Rack

rack.

The

panel is

The

receiver should be placed in a
the

free accessofair.

Control

with

the

order

for

receiver above .75 megacycle.

CO.

INC.

frequency,

thumb
Unit,
to

this

screw

T34,

the

rear.

numbered1to6.Bring

forwardsothat

crystal

the

signal frequency

purpose

with

models,

for

lOYz

- Crystals, Y 1

receiver,

any

signal frequency

and

the

for

which

on

and

push

Insert

holders

alongside

handles

with

mountingina

inches high.

order
each
install crystals,

topofthe

the

the

and

front

but

the
tighten

for

the

phone
panel.

for

either

top

will be

HAM-

should

unitisto

retainer

crystal

springs

which
plastic

crystal

and
and

In

Fre-

or

the
the

to

switch, S2. Pencil
erased
time.
that
positions, which are also indicated
selector switch.

the
be
terminalsofthe
S9 is left in

A
load are provided
versity applications.
are
these terminals are

rearofthe
teletype
kc, intermediate frequency
and
an

resistive load,
microvolts signal.

at
an

ifitis

The

numeralsonthe

they

agree with

Relay Connections -

send-receive function is desired, connection may

madebysoldering a

the

VC

and

A

VC

provided

IF

Output-TheIFOutput

RG-lljU

outputofapproximately 200 millivoltstoa 70

Convenience

the

accessory, such asanelectric clockorlamp.

Diode

bus

and

chassis provides

or

other

rearofthe

or

ink may be used

desiredtochange

the

numeralsonthe

If

twin

Send-Receive switch, S9.

Sendoropen

Output-Shunt

series connectiontothe

at

the

rearofthe

The

with

a wire
not

used for external connection.

applications

is

cable should be used.

with

a normal sensitivity

Outlet-The

chassis may be used

these figures at

chart

external relay operation

conductor

position.

Diode

jumper

socket, SO-239, at

for

connection in diversity,

where

required. A PL-259 plug

power

and

should be used so

crystal socket

by

cabletothe

connection to

detector diode

receiver for di-

Output

connection

a sourceof455

This

will provide

input

outlet receptacle

for

can be

the

crystal

In

this case

terminals

operating

any

for

the

when

the

ohm

of

2

General­SP-600 receiver,
familiarize himself
various controls.
this

description,

the

partofthe

front

paneloron
example,
trol,

the
legend
to

photographs,

ing

this

are

shown

are

shown

Selectivity
is a 6-position switch
three

non-crystal degreesofselectivity, ranging from
extremely
fidelity
dial indicates

Phasing
control
It

permits
acteristic
channel

frequency.

RF

Before

When

the

name

when

referringtothe

word

SELECTIVITY

appearing

description.

in Fig.

sharp

mcw

is a differential

adjustmentofthe

for

interference

Gain

adjacenttothe

Figs. 1

in Fig. 1

6.

Control-The

for

operation.

the6db

Control-

high

Control-

attempting

the

operator

with

the

referringtothe

words

in capital letters represent

adjacenttothe

the

rear

and

6, is suggested while read-

Front

and

rear

which

cw receptiontobroad for good

The

bandwidthateach setting.

The

type,

attenuation

on

either

The

operation

should

functions

skirtofthe

in capitals indicates

panel controls

SELECTIVITY

selects

SELECTIVITY

CRYSTAL

crystal selectivity char-

RF

and

controlonthe

SELECTIVITY

control. Reference

controls

three

variable air capacitor.

of

closely adjacent

side

GAIN

IV

OPERATION

of

the
thoroughly
usesofthe
controls in

chassis.

and

crystal and

PHASING

of

control varies

For

con-

the

and

dials

terminals

control

control

the signal

the

overall gainofthe

either

tive in

Power
combined
counter-clockwise rotation
throws
catedonthe

Audio

varies

the
controlisalso operative in either positionofthe A
MAN

Phones

operating

jack

to

receive

isinthe

separate secondary winding

former, which provides an

phones. See Section

Audio
ableatthe
chassis for connection to a 600

III

installation.

Noise Limiter-

the

noise peak limiter inoroutofthe
control is operative independentlyofany
any

other

positionofthe

Switch -

with

the

power switch to

RF

Gain

Control-

input

switch.

Jack -

with

any

standard single circuit

circuitatall times

Output-The

four

control. See SectionIICircuit Description.

receiver.

The

power,

the

RF

GAIN

of

GAIN

voltage to

The

screw terminal

PHONES

the

sleeve

III

The

control dial.

The

the

of

attenuated

installation.

AUDIO

LIMITER

This

control is opera-

AVC-MAN

or

control. Complete

the

RF

the

off position,asindi-

AUDIO

audio amplifier.

jack is a single circuit

grounded

and
the

audio

OUTPUTisavail-

boardatthe

ohm

switch.

on-off switch is

GAIN

GAIN

andissuitable

phone

is connectedtoa

output

signal

rearofthe

load. See Section

control switches

circuit.

position

control

control

plug.

for

This

VC-

It

trans-

head-

This

of

[ 8 ]

A

VC-Manual
AVC-MAN
to

the

controlled

holding
wide
minimizes

received signal
when

strength

A

indication

received signals.

on

tionally

meter

below
A

and

by

in

lator

theAVC

keying.

lator
for
reception.

trol varies
oscillator

3 kilocycles.

cathode

fier,
detector

pole, single
tionitdesensitizes

and

rotates

and

quency

arbitrary

o

pointerofthe

plete
dial
scaleofthe
the
this
vernier
over
vernier
points. Since

on

into
mits

of

the

the

variation in

tuning

while traversing a

VC

position

AVC

operation,

strong

is less effective

maximum setting.

VC

potential is removed from

the

gainofthe

the

RF

CW-Modulation

the

CW

and

In

is inoperative

either

Beat

Frequency

over

BFO

Injection -

self biasofthe

thereby

tube.

Send-Receive -

3.5

me oscillator tubes

Tuning

the

vernier

band

outer

to

100 scale.

revolutions

at

any

vernier

setting is read, 487.6.

system divides

each

divisions,

the

vernier

approximately 6000 readable settings.

extreme

stations.

Tuning

rightofthe

Switch-In

switch applies

RF

audio

output

the

strengthofreceived signals.

the

variationofoutput

and

prevents

through

the

RF

of

tuning

GAIN

position energizes

connects an additional

circuittoaccommodate

the

voice modulatedortone

the

throw

Control

main

tuning

setting.

main dial indicates

dial indicates 87.6,

frequency

Lock -

resonance

The

when

signalsorto

control.

Switch-The

MOD

position

and

Oscillator -

tuningofthe

a range from zero

The

determining

The

toggle switch.Inthe

theRFamplifier, gate, second mixer

and

tuning

dials.

scales, calibrated in megacycles,

scale.

The

The

numeral

main dial indicates

that

Thus,ifthe

with

itiseasytoestimate

scale,

this

accuracyinthe

The

TUNING

automatic

andIFamplifier tubes, therel-y

relatively

blasting

signals

frequency

Meter

RF

GAIN
necessarytocontrol excep-

reduce

when

the

In

the

receiver is manually controlled

the

the

the

conditions are established

BFO

beat

frequency

the

injection voltagetothe

SEND-

during

Dials -

capacitor as well as

The

vernier

under

have

been

This

the

rotationofthe

band

into approximately 600

one-half division calibration

divides each frequency

TUNING

control, provides a positive

theAVC

duetofadingofthe

of

circuit is operative for

and

control is operative

RF

MAN

the

beat

timing

beat

The

455 kc

beattoplusorminus

IN]

REC

transmission periods.

The

main dial has six fre-

dial has an
the

madebythe

pointer

over

the

logging

pOSItIon

bIas

constant

and

overloading

greatly different

band.

relative

CW-MOD

theAVC

control adjusts

precise mechanical

one-tenth

LOCK,

strength

noise,

but

GAIN

position

controlled

frequency oscil-

capacitor

frequency

modulated signal

BEAT

beat

buffer ampli-

controlisa single

SEND

TUNING

the

upperorfixed

numberofcom-

for

the

figure 4

readingtolog for

and

the

potenti1',

over a

This

In

the

the

RF

control

the

tubes

control

to slow

oscil-

OSC

con-

frequency

the

posi-

control

the

main

and

arbitrary

vernier

the

outer

and

main dial

divisions

band

This

per-

resetting

located

of

to

an

to

lock

for

the

tuning
frequency setting
dental

shiftingofthe

Band

Change-Each
CHANGE
RF

and
assemblies, from one frequency
turret

tion desired. A positive

correct location
CHANGE
MEGACYCLES

centerofthe

is

cator

Crystal
control selects
operation
which

the

in
tion.
small frequency tolerancetowhich
made.

Meter

pole, double

to

theRFposition. See SectionIICircuit Description,

Tuning

Tuning
control is usedtoadjust

meter

RF

position.

plus 20dbon

microvolt
switch in
METER

circuit

db

from 6 milliwatts.

the

RF
pressed
been adjusted
headphonesorspeaker. Failuretoobserve
tion

may
AD]
when
adjusted
the

meter
from
justed
resistive load.

Preliminary to
"on"byturning
advance this control
lIght. Place
the

BAND

in

whichitis desiredtooperate.

at

least15minutes before using

to

permit
pluginthe
See Installation, Section III.

MCW

its extreme counter-clockwise position and

SELECTIVITY

control

HF

Oscillator coil,

hasnostops

control simultaneously operates

panel

with

the

Controlled

either

or

anyone
similarly numbered crystal sockets
Crystal

The

DELTA

Switch-The

throw

Meter.

Meter

when

the

It

RF

input

theAVC

switchtothe

for

indicationofthe

position

for

the

result in damagetothe

AF

control is usedtoregulate

operating

to

obtain a 0dbreading on

and

the

600

ohm

to

6 milliwatts,

the

CHANGE

the

tubestowarm

PHONES

Reception -

mechanism

whenitis desiredtoprevent

tuning.

turns

and

may be

of

the

various bands.

band

indicating dial, located at

and

aligns

proper

Control

scaleofthe

HF

variable

of

Unit.

FREQ

METER

toggle switch

Controls-

METER
is adjustedtoproduce a reading

the

RF

scaleofthe

signal

position. Depression

AF

This

when

released

AF

scale unless

for

low

power

on

the

is made

SEND-REC

switch to 3 kc.

with

AUDIO

or

Operation-Turn
the

RF

GAIN

to

10.

controltothe

jackoruse speaker as desired.

Turn

without

revolution

the

turret,

trimmer

bandtothe

turnedineither

detent

the

Oscillator -

high

the

six crystal positions,

See Section

control compensates

The

the

resistance

switch isinthe

and

with

position

AF

power

switch is

and

the

output,

meter.

AF

scale.

the

audio

OUTPUT

1.9 volts across a 600

control clockwise

Note

switchonREC

This

the

up.

Insert

the

TUNING

affecting

of

the

containing

and

switch contact

next.

mechanism assures

The

dial

frequency

main dial.

The

frequency

are

III

the

crystals

switch is a double

with

spring

METER

shunting

normal,

meter,

converts

should

the

the

that

receiver, in

Put

the

AVC-MAN

output

spring

notbede-

audio

output

by

this
The
meter

This

the

AF

power

terminals ad-

power

the

dial lamps

frequency

should be

the

headphones

the

CW-MOD

with

control is

LOCK

the

acci-

BAND

the

The

direc-

BAND

the

small

indi-

XT

ALS

oscillator

provided

Installa-

for

return

AD]

a

of

the

meter

level in

return

means

precau-

METER

current

scale

output

ohm

switch

and

and

turn

band

done

order

turn

the

for

the

are

RF

the

or
of

10

the

to

has

of

of

to

the

[ 9 ]

switchonMOD,
AVC-MAN
controlatits
switchtoVFO.

the

proper

in

as indicated
AUDIO
the
quencyonthe

mum responseorindication

.resonance

quarterofone

just
level
fully
wise,ifdesired.
turnedtothe
frequency
ciently high.
TIVITY
which
LIMITER
SELECTIVITY

positions,

justedtoeither

an

may be

stand-by

the
The

GAIN

AVC-MAN

very

throwntoCW

Locate

then

fixed

which

Installation.

correspondingtothatonthe

GAIN

TUNING

the

the

AUDIO

andasrequiredtoprevent

tighten

responseifthe

switch

provides

switch

theXTAL

adjacent

turned

periods in

tuning

The

range,orduring

RF

Meter

control

weak

and

throw

Crystal

frequency

crystals

the

LIMITER

switchonAVC,

center

position

by

main dial reading should be

the

8 kcor13kcposition

If

interfering

down

switchisonAVC.

signals

tune

the

Turn

position

With

the

for

the

MEGACYCLES

control until some noise is heard.

control

main dial

percentofthe

GAIN

TUNING

The

the
should

the

switchisused on

sideofits

scale calibrationisfor

operation

and

CW-MOD

Frequency

operationatany

have

to

and

control for

SELECTIVITY

noise level is high,

be

most intelligible reception

should be

PHASING

signal.

somewhat

the

transmission,

and

the

CW-MOD

the

BEAT

the

signaltoobtain

been

theXTALS

switchtoOFF,

the

XTAL

and

BAND

the

indicate

signaltonoise ratio is suffi-

center

switch backtoMOD.

Control

provided. See Section

CHANGE

frequency

tune

the

on

the

signal frequency. Read-

overloading. Care-

LOCKbyturning

turnedtothe

thrown

eitheroftheXTAL

control may be ad-

positiontoattenuate

The

to reduce noise,

deep fadesofthe

indicates only

When

OSC

signal

switchtothe

panel

PHASING

turn

theXTALS

band

dial, advance

the

desired fre­signal for maxi­RF

Meter.

within

the

desired

switch may

for

improved

the

bandwidth

"on."

RF

GAIN

when

maximum

searching for
switch may be
control set

zero

may be used

frequency

chart

for

the

control

desired,

the

Turn

one-

output

clock-

high

SELEC-

and

the

If

the

control

during

traversing

signal.

when

at

beat

and

numeral

the

At

be

RF
the

for

for

III,

de-

O.

sired signal frequency.
signal frequency
obtain zero
and

the
MOD
trol for maximum

mum response.

CW
CW
above. Place

the

BEAT

for

zero beat.
either direction,
AVC-MAN
gives
level
andbythe

RF

Meter
SELECTIVITY
positions, as
provide rejection
PHASING

ence from an adjacent, interfering signal.

ence
tween
realizedbyslightly
opposite sideofresonance from
undesired signalislocated
PHASING
the desired signal.
may be used as described
above.

If

short time intervals,
and

for such operation

throwntoSEND

be
keeps

When

the power

of

the

beat

BEAT

switchtoMOD

Reception -

reception is

the

OSC

Adjust
to

switch may be used in

the

best reception.

by

the

AUDIO

RF

GAIN

does not

found

control is adjusted

of

this kind persists,

the

desired

control

reception is to

the

receiver

operationofthe

"off"byextreme counter-clockwise

RF

GAIN

Set

the

main

tuning

and

adjust

the

DELTA

with

the

CW-MOD

OSC

control

and

RF

Meter

The

the

same as

CW-MOD

controlat0,

obtain

GAIN

operateonthe

switch may be used in

desirable,toreduce noise

of

an interfering signal.

and

detuning

and

The

be

the

between

warm

control.

atO.Throw

adjust

the

indicationorfor maxi-

preliminary procedure

for

MCW

switchonCW

tune

the

the

BEAT

the

audio pitch desired.

Adjust

control

further

the

undesired signals may be

the

and

the

BEAT

Crystal Frequency Control

under

suspended

power

the

SEND-REC

and

ready

receiveriscompleted,

OSC

the

the

control

whenonMAN.

MAN

for

minimum interfer-

discrimination be-

desired signaltothe

that

readjusting

OSC

MCW

and

should be left

reception periods.

for

switchonCW

TUNING

when

dialtothe

C control

the

CW-

Con-

reception

and

with

desired signal

control, in

The
position
desired

on

switch should

instant

which

output

on A

position.

the

XTAL

or

TheXTAL

If

interfer-

which

theXTAL

control

Reception

resumed

"on"

use.

rotation

VC

The

The

This

turn

to

for

to

the
for

at

General-

duty

and

yond

the

of

the
preventaheavy
cause calibration
gears.
brush,
different
be used
the

receiver will be greatly facilitatedifthe

of

this

Some sectionalizing

not

is
operationofthe

normal
indicates

This

receiver is designed

should

replacementoftubes.

gear

This

turning

portionsofthe

on

instruction

existant

operationonthe

that

normally require little

teethinthe

accumulation

error

and

may

be

done

the

controls to obtain access

the

gears.

Operation

book

of

on

allofthe

three

the

fault is associated

An

gear train is recommended

of

improper

with

gears.

No

are

thoroughly

faults is possible,ifthe

frequency bands.

lower frequency bands,

three

higher

MAINTENANCE

for

continuous

attention

occasional cleaning

dust

which

operationofthe

a small stiff bristle

greaseoroil should

and

maintenance

digested.

frequency bands,

with

the

be-

to

may

to

the

of

contents

fault

Non-

with

circuits

V

of

tube

V7.Ifonly

are

affE;cted,

ofV6or

HF

to
section.

Visual evidence
darkened resistor,
excessive
tube

elementatthe
a case,
should be replaced as indicated.
to

16 and
ponents.
inspection fail to disclose
voltages
checked against
Any

appreciable

the

V8.Ifonly one single

Oscillator

current

both

Table

If

and

[10]

the

fault is associated

and

of

whichiffoundislikely caused

duetoa

load sideofthe

the

capacitorortube
5 for location

the

checks

resistances should be measured

the

departure

three

higher

frequency

with

the

band

is affected, refer

RF Coil Assemblies

trouble is usually a

short

circuited capacitor

RefertoFigures 10
and

on

tubes, fuses and visual

the

fault,

values given in Tables 1

beyond a normal variation

burned

resistor.Insuch

and

the

valuesofcom-

the

tube socket

bands

circuits
in

this

or

by

or

resistor

and

and

2.

of

approximately15percent
tables will generally indicate
at

fault.

If

the

foregoing does

then

a stage by stage checkofamplification should
madeasshowninTable4.Any
the

valuesofinput
stageatfault.Ifa
IF

transformer,

found

defective

need

be realigned. Follow

Section

Oscillator
assemblies
dentlyoftheir
semblies
units,
replacing

springs
before

are

faulty
ceiver.
and
tube
for

Figures 2
tubeata time in

detected

formancebythe

when
line fuse,
from
or
the

ceptacleonthe
light
or
blown,

make

line fuse
insertedinthe

fusebeblown,
operation,
cabinet
trouble.

by
four
the
with
removed

variable coupledIFTransformers,

whether

tivity

If

position, check

associated

soldered connections

and

VI,

TheIFTransformers,

and

are

are

without

these shields, make sure

are

in placeonthe

the

shield is installed.

Vacuum

the

check

each

Locating

plug

speaker, check

two

IF

the

tion

Tubes-Weakordefective

most

performance

In

caseofsuch faults, first remove

them

testerisnot

tube

and3.Such

by

the

power

Fl

the

spare fuses.

maybecheckedbyplugging

power

but

thereisno

replaceitwith

sure

that

holder

or

The

screws

screws

front

panel.

bottom

for

Transformers

the

switch S5,oronlyonone positionofthis

faulty

check

the

localizedatone

showninthe

tuned

RForHF

and

replaced

for

the

unit

the

3.5

each

mounted

respective shields.

easily removed

disturbing

common causeofdecrease in sensitivity,

or

in a

tube

available, substitutionofa

type

and

order

the

improvementorrestorationofper-

new

Faults -

switch is

and

replaceitat

source receptacle

rearofthe

forablown

onlya1.6A

and

minus

nor

replacementofthe

the

receiver should

rack

and

table model receiver is

through

through

The

and

top

purposesofinspection

-

fault existsonall positionsofthe

operation

for

with

that

switch contact involved.Iffaulty opera-

from

the

the

componentorcircuit
not

reveal

great difference from

table will indicate

circuit component, such as

oscillator coil assembly, is

only

the

the

alignment

involved.

Crystal

mc Crystal

failureofoperation

position

substitution is best made, one

tube.

If

An

soundatall in

a spare fuse.Inreplacing fuses,

that

B fuse holder.

inspected

the

the

rack model receiver is provided

cover plates

If

continuity

position, check

at

transformer

Filter,

Controlled

on

the

The

for

inspectionofthese

the

soldered connections.

that

inductance

testerofreliable design.Ifa

should

that

the

faulty

the

dial lamps

turned

a fault is tracedtooneofthe

the

on, check

the

rearofthe

open

circuit in

and

theninthe

receiver.Ifthe

minus B fuse, F2

Fusetron is inserted in
only

a

o/s

be

removed from its

for

heldinthe

cabinet

slotted holesateach side

occurs

bottom

and

T4

on

of

the

coil

and

existsonall positions

values in these

the

fault,

the

replaced unit

procedure

Beat

Frequency

Oscillator

chassis indepen-

shield can as-

the

grounding

adjuster

a lamp first

the

ampere fuse is

Should

visual signs

which

only

switch terminals

screws

vacuum

be tried. See

tube

do

repair.

or

coupling coil

for

tubes

in a re-

the

tubes

new

tube

may

not

light

for

a blown

receiver

the

line cord

ac re-

dial lamps

headphones

and

neither

fuses restore

cabinet

andbythe

should be

T5,

check

selec-

switch.

one

switch

imperfect

be

an

in

In

be

the

in

if

of

of

of

the

selectivity switch, make

the

plate coils,onthe
associated
and
assemblies
on

the

the

turning
ment
screw
ing

method
prevent

Beat
frequency
with

be necessary
its
in
the
shaft
necessarytoremove burrs, caused

from
through
the
coupling
panel.
taking

Unsolder

unitatthe

not
wireisinsulated
agedbyheat.
to
inputtothe
oscillator is
shielded lead disconnected from the lugofthe

unit, check

tion

from
BFO

14.

shield

undersideofthe

When

Before
to
bearing bracket, adjust
obtain
Make
with
tension

switchonA

the.2kc position,
maximum
switchtoCW
adjust
Turn
check
audio frequency source such as a good audio oscillator.

If

is not
the

with

Crystal

adjusting screws

and

these shields

the

number

the

disconthe

forward

flexible couplingonthe

overheat

its shield,

of

Now

the

Adjustment

the

set screwsofthe

Filter

that

adjusting screws.

the

screws

loosen

driver

engaging oneofthe

and

tighten

the

adjusting screws from

Frequency

oscillator

Crystal

to

3 position

rigid

shaft

through

the

switch

the

disc.

forwardonthe

Remove

out

the

the

leads from

undersideofthe

the

there

buffer

functioning

withacontinuityorohmeter

this wiretothe

the

chassis.

unit

for

remove

cantothe
replacing

tightening

chassis
alignmentofthe

sure

that

the

bow

nut,

before replacing

VC,

tuning

the

top

the

BEAT

the

output

beat

frequencies

within

main grid coil

these coils.

T3

are held in placebythe

with

and

the

tension nuts, using

and

tension nuts, employ

the

Oscillator -

T6,ifthe

Frequency

set

the

coupling

selector switch shaft. Slide

shaft

Now

the

BFO

two

screws

wireofthe

with

Note

thatifthis

will benobeat

tube

Carefully

correct replacement. SeeT6on

the

chassis

chassis

the

unit, follow

the

and

the

the

shield

of

the

of

BF0-

and

tune

meter

and

with

screwofthe

OSC

beat

the

range between 3

BFO

the

continuity

andonthe

Transformers

have additional

To

remove these shields, hold

a screw

losing

tension

Control

crystal selector switch S2,

and

loosen

and

the

coupling

in

order

loosen

BFO

shaft

holdingitto

the

polystyrene

V12

properly.

buffer

two

and

and

two

two
the

two
grounding

spring

the

SELECTIVITY

in an unmodulated signal

reading. Set

the

dialtoeach:;

frequency against a

cbtainedateach 3kcposition

shaft

drivertoprevent

the

alignment

slots.

nuts

working

To

remove

receiver is

Unit

the

the

two

and

by

to

the

four

BFO

shafts

drive

shaftinthe

bearing

six terminalsofthe

chassis,

shielded cable since

and

cable

frequency voltage

even

Therefore,

tube

V12

observe

screws

screws

screws

unit

With

the

holding

the

two

remove

the

reverse procedure.

holding

holding

and

shaftsatthe

spring is in place,

downward

the

shield can assembly.

the

BEAT

BFO

unit

and

coupling

check

wiring

T4

and

inner

shield

tension

adjust-

another

When

just

four

set screws in

disc.Itmay

the

slide

set screws
and

being

is easily dam-

wireisgrounded

though

and

wiringofthe

screwsatthe

the

shaft

the

OSC

for

kc position

3.5

small

replac-

the

same

enough

loose.

the
equipped

T34,

it will

set screws

the

switch

set screws,

the

slide

bracket

the

chassis.

careful

the
with

the

connec-

its freedom

Figure

the

BFO

the

the

bracket

coupling.

against

AVC-MAN

control

CW-MOD

dial at 0,

zero beat.

known

kc, loosen

and

turn

nuts

shaft

front

BFO

on

T5

to

beat

on

be

of

the

by

to

this

beat

the

BFO

BFO

unit.

unit

shaft

to

the

on

for

and

the

[11]

shaftofthe
repeat

screwofthe

is realized.
enoughtoallow
shaft
screws.

Crystal
driveofthe
it

should
switch
coupling
tighten
the

knob
originally set
set

the

holding

that

the
pin,

lightly fasten
this

disc is

switchinthe
between
should
with

tighten

Crystal

that

the
necessarytoremove
RefertoFigures15and16and
capacitor
solder
leads

13

underneath

E
of

the

XT

ALS

quency

delta
at

the
transformer
chokes.
engages a grooveina

control unit.

filter assembly paneltothe

cornerofthis
cientlytopermit

the

crystal control
screws
receiver.
handling

shaft,orthe

C

move

the

cover

enoughtomake

Hold

damaging
cover
replaced, follow
Follow
menttoproperly

HF
operation
receiver,

four

BFO

with

respecttothe

the

above, resetting

BFO

unit

One

set

the

until

the

range

Switch

crystal control switch

be adjusted as follows:

shaft

through

and

being careful

the

four

set screwsinthe

indicator

under

crystal switchonthe

the

disc in a counter-clockwise direction, so

endofthe

the

properly

number

the

two

discs

exhibit

the

the

the

of

unit

Oscillator. Loosen set screws

C control knob.

topofthe

are

the

these flanges
off

the

Oscillator

coil assemblies

a slight

thumb

Control

Crystal

C60

the

switch

The

In

it, be carefultoavoid

the

the

and

set

screws.

Control

from switchS3on

black, black-white, blue-red

crystal control

the

from

filter capacitor C161. Remove

shaft,

bracket

and

remove

front

Remove

panel

removalofthe

removed,

removing

delta C capacitor may be damaged. Re-

four

screws

and

spring

the

therfchokesinthe

crystal

the

procedure

reinl\tall
and

occurs in only

trouble

the0adjustmentbythe

each time

screw shouldbeused just tightly

drive

shafttooperate

is correct

Adjustment

the

disc

not

on

the

Beat

Frequency

slotinthe

set screwsofthe

adjusted

1 position,

should

Unit

the

chassis

endofthis

and

unittothe

the

flanges clear

aparttoprevent

unit

reverseofthe

for

notbeunder

amount

forefinger.

-

If

Unit

unit

for

unit

and

as described

Remove

post

the

mounting

the

four

move

unit

the

unit

holding

the

two

box.

under

the

RF

Coil Assemblies ­one

should be

that

drive

shaft

until

the

above range

the

and

then

tighten

-

If

the

mechanical

has

been

disturbed,

Carefully

and

to

tum

rigid coupling,

number

Oscillator.

number

disc is against
on

the

the

of

play

When

it

has

been determined

is defective, it will

repairorreplacement.

unsolder

the
from

unsolder

under

the

nut

adjacenttothe

bracket

bracket

postofthe

screws

mounting

the

filter assembly

four

chassis.

maybetaken from

and

any

strainonthe

eachofthree

top

endsofthe

the

their

unit

while sliding

When

above procedure.

Crystal

switch

mechanism.

slide

into

the

the

switch,

3 position as

1 position

the

disc.

shaft,

with

connecting

tension
when

so adjusted,

the

gear plate.

and

red-white

terminal strip

the

red lead

Beat Fre-

and

remove

and

lockwasher

over

the

is slotted

that

secure

postsateach

screws holding

When

in subsequently

sides

topofthe

edges from

the

unitisto

Switch

If

frequency

found

bandinthe

bandofthe

in oneofthe

tuning

and

top

BFO

both

the

rigid

with

Now

and

drive

When

the
bar

and

tried

be

lead

of

Un-

the

the

power

filter

and

crystal

the

suffi-

these

the

delta

of

cover

box.

the

be

Adjust-

faulty

unit

turret.
31
does

assemblies
and
unit.
question in its normal operating position

the

counter-clockwise.

semblies parallel

Now

in

towards

besttoremove

inspectitfor

semblyifavailable. Caution:

base

before

change

switch

cedure until

these assemblies, first check

particularly

assemblies,

receiver is operated in

transmitter

be

coil is

Plate Coil Assembly
quiredatpin 7ofV5isfoundtobe greatly different
than
pin7of
ponentsofthe

assembly as described
replacement

For

example: Coil assemblies

should be examinedifband

not

perform normally.

stand

the

receiveronits

remove

Turn

band

remove

the

is firmly seated

careful

Mixer

to

sary
cover plate

assembly is to be replaced, it will be necessary
solder allofthe
terminal boardsofthe
components

RF
form normallyonanyofthe
the

previous tests indicate

and

audio frequency amplifiersisnormal, including the
gain check in accordance
pin 7ofV5,
Platformorin
moving

move
capacitor connections.
Observe
erly

when
ture
modulated
andV2and
of

the
setting
orderof5or6 should be indicated for each stage
lossofsignal will indicate
gated
signal is appliedtopin 7ofV5,

the

in

the

bottom cover plate from

the

band

change control to place

change control

This

andatthe

the

two springs holding one coil assembly

turret

and

carefully remove it

you

and

off

the

only

one coil assembly at a time

defectsorsubstitute a replacement as-

and

goingtothe

control. Failuretodo

spring

the

the

where
signals.

that

toward

Plate Coil Assembly -

the

values shown in

V6

remove

and

and

Tube

the

the

top

that

the

tube

adapter, see Section

rf

to pin 7ofV5.

adapter

for

the

for the fault.

HF

oscillator sectionofthe

next

contacts beyond repair. Repeat

faulty assembly is found.Inchecking

small primary coils as in

they

In

replacing these coil assemblies

the

endofthe

the

frontofthe

Tl,

is normal.

mixer plate coil assemblies it is neces-

the

crystal control

under

shieldofTl

of

a defective component.Ifthe

leadsatboth

wiringofTl.

Platfornl -

the

faultisindicatedtobe in

the

main

RF

Tube

Platform, it is advisabletore-

shield cover

the

tuning

tuning

control is rotated. Using a minia-

test signal successivelytopin 1ofVI

and

signal,

signal frequency used. Gainofthe

No

two

and

will place

bottomofthe

tonguesofthe

Make

securedbyits retaining springs

assemblyorturning

for

are liable to damageifthe

the

presenceofvery

is indicatedifthe

Table4,and

To

obtain accesstothe

Crystal

may

unit.

If

the

six frequency

that

with

tuning

and

Refer

capacitor is operating prop-

For

tune

the

signal

T13,

19, 25

7.4 to 14.8 me only,

To

remove these coil

rightorleft side

the

tuning

the

band

and

then

one-half revolutions

the

band

coil as-

tuning

by

sliding

shields.Itis

sure

that

the

the

this

may damage

this

continuityofthe

the

RF

assembly nearest

receiver.

Troubleinthe

input

the

gain

unit

and

the

Control

then

the

RefertoFigure15for

receiver failstoper-

performanceofthe

Table

4 for

capacitor. Before re-

inspect

to

Figures 8

VI

alignment, apply a

eachofthese positions

through

sectiontobe investi-

output,

will indicate trouble

Unit.

be removed for

bottom

the

unit.

and

bands

the

input

theRFTube

main

and

the

proper dial

when

the

With

and

turn

unit.

and

coil

band

the

pro-

coils,

Input

strong

the

Mixer

from

com-

filter

The

entire

to

un­top

and

tuning

and

input

in

it

re-

IF

to

15.

the

[12]

covers removed from
refer

to Figure15and

red-white, red-green, yellow-black

that

come from
Unsolder
stators
the
Change

ordertohave

in
and

tube

age to

screwsatthe

four
platform.Inhandlingbecareful to prevent damage

the

readytobe
procedure.

the

leads from

and

ground

lead from

leave

platform is replaced, otherwise irreparable dam-

the

screwsatthe

switch contactsofthis assembly.

the

control one-half

the

band

switch contacts will occur. Remove

cornersofthe

replaced, follow

the

tuning

unsolder

the

tube

platformatthe

the

strapsateach section.

tube

platform

turn

the

band

switch contacts disengaged

switchinthis position until

topofthe

side flange

capacitor

the

blue, white-black,

and

tuning

from

and

the

capacitor rotors,

at

53.

Turn

any

platform

carefully remove

When

reverseofthe

and

blue-red leads

topofTl.

Unsolder
the

Band

band

position

the

the

and

the

unit

above

Tl,

RF

four

the
the

to

Main

Tuning

place

the

main
follows: Remove
of

the

capacitor as described

the

Bring
control. Carefully remove
at

the

that

gear

spacing washer between

The
tionbytwo

front

its frame

is

ing screw
moved to
lifted from
in

capacitor to full meshbymeansofthe

frontofthe

secures

plate, looping a pieceofsmall

front

screw is taken out.

with

reverse

Capacitor-

tuning

the

top

capacitor. Remove

the

capacitor frame

capacitor plate is located

dowel pins

one

hand

and

spacer.

the

rear,todisengage

the

receiver. Follow

when

replacing

If

it

capacitor,

cover

and

under

the

spring

the

capacitor

and

will

Now

hold

and

remove

The

capacitor may now be

the

capacitor.

is necessary to re-

the

procedure is as

unsolder

RF

front

wire

and

not

the

the

the

dowel pins,

the

above procedure

the

tube

Platform.

and

drive link

the

single screw

plate

around

and

gear plate.

heldinposi-

move

when

capacitor

rear

support-

tuning

to

leads

the
the

the

by

and

[

13

J

TUBE

SOCKET VOLTAGES-TABLE 1

Voltagetochassis. Measurements made

asterisk

above 10 volts
control

TUBE

V·l
V·l
V·2
V·2
V·3
V·3
V·3

V·3

V·4

V·5

V·6

V·6
V·6
V·6
V·7
V·7

V·7

V·7
V·8
V·8

V·9

V·9

V·10

V·lO
V·ll
V·ll
V·12
V·l2
V·13
V·14
V·15
V·16
V·16

V·17
V·17
V·18
V·19
V·19
V·20
V·20

were

at

minimum

1 2

*-1
*-54
*-1
*-54

-

-

-

-

130

-

-

-

-

-

30
*-1
*-54
*-1
*-54
*-7.8
*-7.8

-

-

25

-

-

-

-

150

-

-

-

-

made

0

0

0
0

0

50
52

with

Measurements Corp. Model 62

and

the

10 volt scale for voltages below10volts. Line voltage 117,nosignal input.

and

CW·MOD

3

-

-

-

-

-

-

--

-

-

1.2

-

-

-

-

-

-

-

-

-

- *6.3ac - 30

-

300

320
*-96
*-97

*6.3ac ­*6.3ac
*6.3ac. - 210
*6.3ac -

- - -

-

- - - 0

-

*6.3ac
*6.oac

*6.3ac
*6.3ac
*6.3ac
*6.3ac

*6.3ac

*6.3ac
*6.3ac
*6.3ac
*6.3ac

-

-

- *6.3ac -

- *6.3ac

-

-

- *6.3ac

-

- *6.3ac

-

-

-

-

-

-

*6.3ac
*6.3ac

*6.3ac
*6.3ac
*6.3ac - 210

~6.3ac

*6.3ac

1.5

1.6
260
280 265

-

-

-

*6.3ac
*6.3ac

switch on

4

-

- -

- -

-

-

-

-

- 225

-

- 215

-

-

-

-

-

-

-

-

-

.

-

-

-

-

-

-

228

-

-

-

-

-

with

Weston

"CW"

SOCKET

5

200 95
260

260

130
140

225

260

260

Uv

215 0 0

240

0

205
260 235
205
260

210

235

240

25

*22

-

-

-

-

-

150

-

-

-

-

PIN

6

- - -

148

148

150

150

-

95

- - -

*6.3ac

0

*6.3ac
*6.3ac
*6.3ac

- - -

110

-

-

-

90

105

125 3.4

140

235
140
140

210
240

3.8

0

-

-

90

90

40

45

-

-

-

*6.3ac

-

- *6.3ac

-

-

-

-

-

Model 663

VTVM.

NUMBERS

7 8

265 ­265

290
280 -

*-1
*-1
*-1
*-1

The

- -

-

-

-

-

-

-

-

Volt·

500 volt scale was used for all voltages

9

-

-

-

-

-

-

-

-

-

-

- -

- -

0

- - -

- -

-

-

- -

- -

-

- -

-

-

-

-

-

- 6.4 *6.3ac

- 7.4

-

-

-

*-96
*-97

300

-

-

- -

-

-

-

-

-

-

12
13

-

320

-

-

-

-

-

-

-

-

-

--

---

-

-

-

*6.3ac

-

-

-

-

-

-

-

Ohmmeter, except those indicated

Audio

MODE

RF

Gain

RF

Gain min.

RF

Gain

RF

Gain min.

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain
Frequencies below 7.4mc
Frequencies above 7.4mc
RF

Gain
RF

Gain min.
RF

Gain
RF

Gain
RF

Gain max.

RF

Gain

RF

Gain

RF

Gain

RF

Gain max.ormin.

RF

Gain max.ormin.

RF

Gain max.ormin.

RF

Gain max.

RF

Gain min.

RF

Gain
RFGain
RF

Gain max.ormin.
RF

Gain
RF

Gain
RF

Gain

RF

Gain

OF

OPERATION

max.

max.

max.-VFO
max.-Crystal

min.-VFO

min.-Crystal

max.ormin.
max.ormin.

max.-Freqs.
min.-Freqs.

max.-Freqs.
min.-Freqs.
max.-Freqs.
min.-Freqs.
max.-Freqs.

min.-Freqs.

max.

max.
min.

min.
max.-BFO
min.-BFO

max.
min.

max.-*

5 V ac
min.-*5
max.
min.

operation

Freq.

operation

Freq.

below
below 7.4mc
above
above

below 7.4mc

below 7.4mc

above

above

Injection

Injection

Pin2to

V ac

Pin

Control

Control

7.4mc

7.4mc

7.4mc

7.4mc

7.4mc

max.

max.

2 to

Pin

Gain

Pin

by

8

8

[ 14 ]

TUBE

SOCKET

TERMINAL RESISTANCE-TABLE

2

Resistance to chassis.

Tube

removed from socket

mum. Limiter Switch

Socket

PinNo.

Tube

Socket

V-I

V-2

V-3

V-4

V-4

V-S

V-6

V-6

V,7

l.8M

l.8M

0 0

Inf. Inf. 0 Inf.

16.2K

47K

12K

12K

380 0 0

Measurements made

under

"OFF".

1

0

0 0

Inf.

ISO

0 0

0

CW-MOD

with

Weston

measurement.

Switch on

4

0 16.7K 13.6K 0

47K

0 Inf.

0 17.4K

0

S 6 7

16.7K

0 IS.2K

17.4K

17.4K

17.4K Inf.

Audio

"CW".

13.6K

47K

47K

22K

Inf.

37.4K

Model 663 Volt-Ohmmeter.

Gain Controlatmaximum,RFGain Controlatmini-

AVC-MAN

8

0

15.6K

0

0

26K

lOOK

lOOK

390

Switch on

9

"AVC".

MODEOFOPERATION

Crystal Freq. control pos.

Crystal Freq. control pos.

VFO

Operation

Freq. Band l.3S-3.4Smc

Freq. Bands below 7.4me

Freq. Bands above 7.4mc

Freq. Bands above 704mc

1-6

1-6

V-7

V-8

V-8

V-9

V-lO

V-ll

V-12

V-13

V-14

V-IS

V-16

V,17

V-18 118K

V-19

380

1.3M 0 0

I.3M 0 0 17.SK

93K 0 u

0

0 816K

69 K

12sK

0

0

0

Inf.

SOOK

0

15.8K

lK

IS.6K

0

0

0

0

0

0

0

0 Inf.

0 0

IS.2K

55

1704K

Inf.

117K

17.SK

17.5K

17.5K

162K

15.6K 0

17.4K

470K

20K

48K 390

22K

22K

28

SK

28 sK

17.4K

IISK

lOOK

196K

0

470K

In£.

55

0

0

0

0

0

'"

0

196K

0

680

360

15.8K

Freq. Bands below 7Amc

Freq. Bands below

Freq. Bands above 704mc

*0 toIK(BFO

7.4mc

Injection control)

V,20

49K

65K

49K

0

6sK

0

[15]

VI

ALIGNMENT

The

alignment
ceiver requires precision instruments
knowledgeofthe
Ing a double super-heterodyne,
dure

is even more involved

Under

ment

normal service

for

extremely long periodsoftime, consequently

ofamodern

circuits involved.

the

than

the

receiver will stay in align-

communications re-

is usual.

ALIGNMENT OF THE

The

low

frequencyIFshould be aligned first.

recommended

IF

involves

erator

and

not available

method

nate
erator
The
alignment

Co., 117N.Main

and

additional information required

The

signal

of

the

proximately .01

requiredtomake

be
able. A suitable
available as

meter

shouldbeconnected

of

the

receiverorthe

controls

Control

Selectivity
Send
CW-Mod
Phasing
AYC-Man
Audio
RF

Gain
Band
Dial

The

centat400 cycles.

3 kc position
maximum.

and

kc
on

the

of

the

lA1,

L39,
ducing
control as
output.

method

the

an oscilloscope. Since these instruments are

at

using an

an

method

generator

mixer

tube

Part

should

- Receive

Gain

Switch

signal

generator

Set

adjust

its

output

meter.

various alignment adjustments.

U8,

the

signal

requiredtoprevent

Now

turn

for

aligning

useofa sweep frequency signal gen-

the

average service station

amplitude

output

nowbeset

and

L36

meter

will be covered in a

should

Y5

through

mfd.

A miniature

the

adapter,

No.

977 from

Street, Brockton, Mass.

speaker

See
Receive

Mod
Arrow
Man

Set

See

2.5 mc

shouldbemodulated 30 per­Turn
advance

the

signal

output

Refer

and

L32

generator

the

selectivitv switchtothe

modulated signal gen-

will be described first.

be coupledtothe

a capacitanceofap-

mixer grid connection avail-

A/N

Alden

across

the

voice coil.

as follows:

Position

text

for

approx.20volts

text

1.35 - 3.45 mc

the

selectivity switchtothe

the

RF

generator

until

some deflectionisnoted

to figure 3 for

for

maximum

output

overloadorexcessive

andathorough

This

receiver, be-

alignment proce-

the

low frequency

the

for

the

visual

later

paragraph.

tube

adapter

No.

CY-49519, is

Manufacturing

An

output

output

terminals

The

receiver

Gain control

frequency to 455

the

location

Adjust

output.

and

the

RF

.narrow-

The

alter-

grid

will

L42,

Gain

realignment should
possible causesofa particular trouble have been elim­inated.

ment should be attempted, a great deal
should be exercised in making
required readjustment should
slight angular motion

When

IF

cst position,

quency

correct signal frequencybythe
IF

amplifier

.should

frequency
this establishment
that
during

turnedtothe3kc
L36

and
Now
and

adjust L37

ing

this

ing

the
beat
necessary L44 should be adjusted
check
the

signal generator carrier unmodulated.

The
low frequencyIFshould be
cept
amplitude
The
across
junctionofR64

The

band

the
lectivity switch should be in
the

signal generator frequencyto3.955 me

L31, L33

The

oscillator circuit is held to a very close frequency

to

re-

erance

multiplesof3.5 me from 10.5 mc upwards. In
todothis, in viewofthe
radiation from this oscillator, it will be necessary
temporarily
wire
of

this lead
oscillator
be removed except while
standard.

.2

for

the

and

not

be disturbed for

IF

the

signal generator frequency has

the

alignment.

L32 are again adjusted

turn

the

set-up

CW-Mod

with

the

and

adjustmentofthe

procedure

that

the

and

oscilloscope vertical

the

diode detector load resistance, from

high frequencyIFshould be aligned next. Set

switchtothe

and

3.5

me crystal used in

and

to

the

tube

notbeattempted

it has been determined

the

not

of

the

adjusting screw.

STAGES

kc,

and

adjust

the

maximum

the

alignment, unlessitshould be to recheck

selectivity switchtothe

for

the

BFO

for

adjustments are made

coincidence

and

LH

may be usedasa frequency

connect
antenna

around

Y8.

output.

frequencyofthe

the

of

crystal frequencytomake sure

The

selectivity switch is now

position

maximum

BFO

switchtoCW

knob dialatits zero reading.

the

R65 to chassis.

for maximum

This

and

should be

BFO

visual

the

of.

the

input

7.4 - 14.8 me band.
the

complete shielding against

a two foot length of insulated

terminal

the

tube
test lead should,ofcourse,

in

unless all

that

adjustments, as any

entail more

signal generator fre-

This

455kccrystal

signal generator

remainderofthe

L42, L41,

for

maximum output.

output.

turnedonby

and

checked for zero

for

zero

should be

methodofaligning

same as

for

oscilloscope images.

should be connected

3 kc position.

output.

the

second conversion

and

dress

shield on the

use as a frequency

other

any

realign-

of

caution

than

establishes

not

1.3kcpos;tion
Before chang-

output.

the

both

the

for

drifted

LW,

L38,

throw-

This

done

above ex­maximum

The

Adjust

and

adjust

standard

order

free end

3.5

the

the

low

with

a

If

the

the

se-

tol-

at

to

me

[ 16 ]

ALIGNMENT OF THE

To

adequately align
cillator
an
quired

justments
and
the

frequency

followed

is

100

an

accurately calibrated signal generator and

output

meter

are

shown in table3.The

is shown in Figure3.The
Figure 3 shouldbemadeinfollowing this
alignment which will

band.

for

the

To

align

the

.54-1.35 mc

coupledtothe

ohm

carbon resistor.
modulated 30 percentat400 cycles
meter connected across
The

receiver controls shouldbeset as follows:

Control

Selectivity
Send-Receive
CW-Mod
AVC-Man
Audio

RF
Band

Gain

Gain

Switch

Limiter

the

are required.

now

The

same

other

frequency

antenna

the

3kc
Receive
Mod
See
Set
See
set for

off

RF

Amplifier

The

locationofthe

be

described for one

procedure

bands.

band

the

input

terminal

The

generator

receiver

Position

Text

for

approx. 20 volts

text

bandtobe aligned

RF

and

HF

frequencies re-

useofTable

part,of

should

signal generator

and

output

then

through
should

the

output

terminals.

AMPLIFIER &

Set

the

Os-

ad-

be

be

The

theAVC-Man
adjustment
maximum output.

3

L adjustments shouldbeset for maximum

receiver
mc and
be adjusted

beginning

ing

a

RF.
tilnoincrease in
Man
generator should be set
volts.
checked for maximum
control as

approximately 20 volts.

Following

the

above.

receiver

RF

Gain control should be setatmaximum and

shown

and

signal

the

C adjustments, showninFigure 3, should

for

with

the

C adjustments for

This

procedure should be carefully repeated un-

switch should

The

Land

found

the

remaining

HF

OSCILLATOR

and

signal generator dials to .56 mc.

switch set on A

VC.

The

in Figure3,should now be

Then

the

Ant.,

1stRFand

generator

maximum

the

Osc C adjustment

output

then

dials are now set to

outputinthe

and

the

Ant,

1st

can be realized.

be settoMan

for

approximately 3 micro

RF

TheAVC

and

C adjustments should now be

output,

necessary to maintain

frequencies,

bands

using

adjusting

the

the

showninTable3,align

the

same procedure as

HF

Osc. L

set

for

2nd

RF

output.

The

1.3

same order,

then

mak-

and

2nd

the

signal

RF

Gain

output

-

at

TABLE

RF

AND

HF

FREQ.
IN

RF&1HF

ADJUST

RF&1HF
ADJUST

BAND

MC

OSCILLATOR

OSC

LAT.

OSC

CAT.

.54-1.35

.56

1.3

ALIGNMENT

0

1.35-3.45

1.4

3.4

TABLE

APPROXIMATE

Output

30

percentat400 cycles. Signals appliedtotube grids

AVC-MAN

measured across a 600

switch

BAND

SWITCH

Any
Any

1.35-3.45

1.35--3.45

1.35-3.45

1.35-3.45

1.35-3.45

7.40-·14.8

7.40-14.8

mc
me
mc

me
mc
mc

mc

on

MAN.

SIGNAL

INPUT

ohm

resistive loadatoutput

CW-MOD

FREQUENCY

Audio 400 cycles
Audio 400 cycles

ModRf455 kc
ModRF455 kc Pin I,
ModRF455 ke PinI,V9
ModRF455 kc
ModRF455 kc
Mod

RF 3.955

Mod RF 3.955

No.3

FREQUENCIES

3.45-7.4

3.75

7.15 14.5 29.0

No.4

AT

IFBeAF

througha.01

switch on

mc
mc

AND

ADJUSTMENT

7.4-14.8

7.5 15.0

STAGES

terminals

MOD,

RF

INPUT

Pin5,V17 5.5 volts

Pin 2, V16B

Pin I,

I,

Pin
Pin

7,
Pin 7, V5
Pin 7,

FOR20VOLTS

of

mfd

capacitor. Selectivity switchat3

Gain

and

TO

VII
VlO

V7
V5 90

V6

14.8-29.7

receiver.

Audio

DESIGNATIONS

29.7-54.0

30.0

52.0

OUTPUT

RF

signals modulated

Gainatmaximum.

APPROX.

15000 microvolts

300 microvolts

70 microvolts

180 microvolts

.5

volts

.6 volts

75

microvolts
microvolts

INPUT

kc

[17]

L41

OT5Q

L38

OT40

L37

OT30

ee

88

L42

L39

L36

L34

L33

OT2Q

r--------,

I

T9

I I

leel

L..:

(\

T8

o

o

le}c

ANT

Gc

1RF

@c

2RF

V5

e

Hl:lJ

8?

o

o

L

o

o

L

~

o L32

0

o

T1

L

0

L31

r--

8

(

0

0 0 0 0 0 0

o 0 0
o 0 0 0 0 0

1

1 2

o~

S

-

L52

-

V3

o

345

rn

)

T34

000

6

T6

L~

GND

I

.J

!Ii

o

z a
z

o

~

::::>

~

10

.....

~

.....

15

::::>

a..

.....

::::>

20

o

TOP

VIEW

SHOWING ALIGNMENT ADJUSTMENTS

•AUDIO AND OVERALLFIDELITY CURVES·

CURVE
CURVE

5

~

5

f

- Audio frequency

- Overall
Selectivity

RF Gain
Output

Audio gain

fidelity

measured across a

OF

CHASSIS

FIG.

switch in13kc

set

controlatmaximum

for

3

amplifier.

at

2.5

20

volts

me.

InputtoPin2,V16B.

Modulation

position.

outputat400

600

ohm
for

30

cycles.

resistive load.

both curves.

-

percent.

....

100

CYCLES

FIG.

PER

4

[18]

1000

SECOND

10,000

• SELECTIVITY CURVES

Overall

at

2 Megacycles·

~

:::>

n.

z

w

C>

Z

<t

Z

o

(/)

W

0:::

(/)

W

~

~

1000

100

10

NUMBERS

1,2

1

I'

\

2 3

,

,

,

~

,

\

~

,

~

l

\

\

DENOTE

AND3NON

1\

1\

~

\

,

~

\

\

\

SELECTIVITY

CRYSTAL

45

6 6

I

-

SWITCH

4,5

54

POSITIONS

AND6CRYSTAL

3 2

•

I

•

II

f

I

I

J

V

J

•

I

I

II

1

,

I

j

I

I

I

~

II

~

I

,

I

I

I

~

,

\

,

J

I

I

I

\

I

I

•

I

I

J

I

I

\

,

\

!\~

1

15

10

\

""'"

505

KC

FIG.5

[19]

I

\

~~

OFF

I

i

I)

~

I

~~~

I

if

~~Ioo-

RESONANCE

J

I

J

V

10

i

15

VII

MODEL

The

SP-600
cabinet
ordered,
cover plate since
rack models
a
vent
trainofthe

conversion
been
kit
ing

installing

plate, remove
by removing

of

or

bottom

dirtorloose

A

cover

ordered

number, 31478-G1,should

for

this conversion.

The

following instructions should be followed

the

large side

rack

the

are

plate

receiver.

plate

to

the

Receiver

mounting.

receiver is

the

cabinet

ordered

andatop

hardware

kit is provided,onseparate order, for

rack

mounting

and

where

cover

the

two

the

three

mounting

is designed

When

not

supplied

serves this purpose.

the

receiver is supplied

cover

from falling

where

the

covers

be specified

kit;

To

install

rear

corner

screwsatthe

brackets

CONVERSION OF

RECEIVER

for

either table

table models are

withabottom

plate assembly to pre-

into

the

table models have

are

desired.

when

the

bottom cover

Qut plate brackets

lower

rear

and

replace these

FOR RACK

two
ones from
nut

When

with

gear

The

order-

when

ends

tom edgeofthe
bottom

bracket, from
which
tapped

The

10-32 screws from
that
cabinet.
the
chassis
plate,toslightly compress
the
place

theminthe

clearance holes in

nut

and

bottom
previously held

cover

rearofthe

TABLE

MOUNTING

plate bracket!'

the

kit, using the same screws. Remove the

lockwasher from

chassis, holding capacitor

of

chassis

the

the

nut

and

(smaller

and

with

To

with

the

end)ofthe

cover

install

the

with

front

four

tapped

with

the

two

slightly

the

screw, nearest

photograph).

kit, using

washer

plate is

the

kit

the

hottomofthe

the

top cover plate assembly, place

angles facing

pressure appliedatthe

panel, secure

6-32 screws from

holes in

the

side

Install

the

the

same screw from

were removed.

bracket replacing

now

installed using

and

the

two

receiver to

downward

the

rubber

the

mounting

channel against

the

the

brackets

brackets.

shorter

the

bot-

CISI

(see

short

angle

with

the

the

nut.

the

five

10-32 screws

the

toward

rearofthe

assembly in

kit, engaging

through

the

the

[ 20 ]

TABLE

No.5

Symbol

Designations

CIA

to

H

C3
C5
C6
C8
C9
Cll
C12
C14
CIS
C17
C18
C19to24
C2S
C27
C29
C30
C32
C33
C3S
C37
C39
C40to44
C47
C49
C50
C52
C53
C55
C57
C59
C60
C61
C62
C63
C64
C65

CM

C67

C68
C69
C70to74
C75

C77
C78
C79
C80

C82
C83

C85

C87

C88
C89
C91
C92
C93
C95
C96
C97
C98
C99
CI02to104
CI05
CI06
CI07
CI08-109
CllO
Clll
C1l2-ll3
C1l4

DESCRIPTION

Capacitor,

8
Capacitor,
SameasC3
Capacitor,
Capacitor,
Capacitor,
Capacitor,
Capacitor,7mmf
Capacitor,
Capacitor,

Same

Capacitor,

Same

SameasC18

Same

SameasC3
SameasC6

Same

SameasC9
SameasCll

Same

Capacitor,
SameasC3
SameasC3

Same
SameasC6
SameasC8
Same
SameasCll
SameasCI8
SameasC39
Capacitor,
SameasC3
Capacitor,
Capacitor,
Same
Capacitor,
Same
Capacitor,
Same
Capacitor,
SameasC3
SameasC18
Capacitor,
Capacitor,
Capacitor,S

SameasC79

Capacitor,
Capacitor,
Capacitor,
Capacitor,

SameasC60

Capacitor,

SameasC18

Capacitor,
Capacitor,
SameasC39
Capacitor,
Capacitor,

Capacitor,
SameasC39
SameasC98

SameasC3
SameasC98
SameasC69
SameasC98
SameasC18

Capacitor,
SameasC18

Capacitor,

sections

as

Cll

as

C3

as

C3

as

C8

as

C18

as

C3

as

C9

as

C3

as

C3

as

C3

variable,
.01
20

mmf
2400
33

mmf

1500
1000

15

mmf
100

51

mmf

12

mmf

2200
39

mmf

variable

85

mmf
220

3300
404

mmf

810

10

mmf
1200
120

190

51

mmf

379
610

65

mmf

.022

variable

270

mfd

mmf
mmf
mmf

mmf

mmf

mmf

mmf

mmf

mmf

mmf

mmf
mmf

mmf
mmf

mfd

mmf

'"

....

.....

.....

'"

.....

....

.....

....

.,.

....

....

....

PARTS

Hammarlund

Part

No.

34001-G1
23012-1

23003-41C
230ll-40C
23003-45C
230ll-62C
23061-168F
23011-58C
23061-155J

23003-94C

23003-87C

23023-65UJ
230ll-17C

23003-47C

ll726-G109
23071-59
23003-102C

23011-69C
23071-67
23023-8UJ

23072-53
23003-2B
23011-60C
23071-50

23071-64
23023-45UJ

23071-63
23072-52

23071-58
23013-1

ll776-Gl

23003.104C

LIST

Symbol

Designations

C1l5-ll6
C1l7
C1l8
C1l9
C120
C121-122
C123
C124
C125
CI26
CI27
C128

C129A,
C130

C131
C132
C133
C134

C135

C136
CI37
C138-139
C140

C141-142
C143
C144
C145
C146
C147
C148
C149
C150

C151

C152
C153
C156-157
C158
C161A,B,C

C162
C163
C164

C165-166

C167

C168-169

E2

E3

E4-5

E6

E7

E8

E9

E13-14

E15-16

E17

E18

F1

F2

11to4

Jl

B

to

155

to

160

to

12

DESCRIPTION

SameasC3
SameasC69
Same

as

Can,

Can,

HS

Terminal,

Terminal,

AVC

1.6A

Lamp,

C98

300

mmf

1300

10

mfd,

Electrolytic.

2 x .05

Paper

430

mmf

.25

mfd,

100

mmf

5100

.05

mfd

2500

.01

mfd

3 x 20

Can,

.25

mfd,

Output

Terminal
Terminal

Terminal

Terminal
Terminal

Terminal

Terminal

Fusetron

No.

input

socket,

Capacitor,
Capacitor,
SameasC3
SameasC98
SameasC69
SameasC1l9
SameasC120
SameasC3
Capacitor,

HS

Capacitor,

HS
Capacitor,27mmf
Capacitor,
SameasC8
SameasC131
SameasC39
SameasC3
SameasC98
Capacitor,
SameasC92

SameasC131

Capacitor,
Capacitor,
Capacitor,

SameasCIS
SameasC98
SameasC143
SameasC98
SameasC143
Capacitor,

SOOV

SameasC12S

Capacitor,

SameasC3
SameasC98
SameasC128

Capacitor,

450V,
Electrolytic

SameasC98

Capacitor,

SameasC131
SameasC3
SameasC98
SameasC152
4

Screw
Audio

Screw

4

and

1

Solder

(left)

Solder

1

(right)

2

Solder
SameasE4
SameasE6

6

Solder
8

Solder

15

Solder

3

Solder

(meter)
Fuse,
Fuse,%Amp

Dial

~azda

Antenna

UG-I03/U

....

mmf

.,.

100V

mfd,

.
.

200V

mmf

mmf,

47

.
.

.

500V 23072-11

mfd,

600V

Diode

strip
strip

strip.

strip.
strip.

strip

strip

.

.

.

Hammarlund

Part

23003-105C
23011-61C

15462-1
15461-1

23023-71UJ
23003-109C

23911-79E

23024-24SL
23015-16A
2391l-77E

23070-40

15463-1

I23915-1

31141-1
31480-1
16650-9

16650-11
16650-12

16650-10

3ll63-Gl

3ll62-Gl
31454-Gl

15893-1

15928-13
16004-1

15959-1

No.

[21]

PARTS

LIST

(Continued)

Symbol

Designations

J2

13

J5
L7

L14
L21
L22

L23
L24

L35
L46

L47
L48

L49-50
L51

L52
L53

Ml
PI
P2

P3
P4
Rl
R2
R3
R4
R5
R6

R7-8
R9
RI0-11
R12

R13
R14
R15
R16
R17-18
R19
R20-21
R22-23

R24-25
R26

R27
R28
R29-30

R31
R32

DESCRIPTION

IF

Output

SO-239

Phone
Power

RF

192
SameasL7
RF

Choke,1millihenry.

RF

Choke,

10
RF

25
SameasL7
SameasL7
RF

12

RF

3.0

RF

Choke,2ohms

RF

Choke,

1st

Filter

170
2nd

440
IF

Output
Tuning
Power
Antenna

UG-I02/U

Antenna

Connector

Cable

PL-259

Resistor,

1/3

Resistor,

1/

2

Resistor,

V2

Risistor,

1/

2

Resistor,

1/

2

SameasR4
Resistor,

1/

2

Resistor,

1/

2

Resistor,

V2

SameasR2
SameasRl
SameasR3
SameasR5
SameasR4
SameasR7
SameasR9
SameasRIO
Resistor,

V2

Resistor,

112

SameasRl
Resistor,

1/

2

Resistor,

V2

SameasR4
Resistor,

1/

2

SameasR5

Socket,

Jack,

receptacle

Choke,

microhenries

millihenries

Choke,

millihenries

Choke,

microhenries

Choke,

millihenries

2.7

Choke,

ohms

ohms

Meter

plug

InJ)ut
Adapter

Connector

(for

510K

watt

10K

watt

3300

watt

1000

watt

510

watt

51

watt

24

watt

22

watt

47K

watt

180

150
6800

2200

dc

Choke,20Hy,

dc
transformer.

Filter

watt

watt
watt

watt

JK-34-A

ohms

8.5

and

cord

Plug,

UG-I04/U.

Plug

J2)

ohms

ohms
ohms
ohms

ohms

ohms
ohms
ohms

ohms

ohms

ohms

ohms

ohms

dc

....

....

..

dc.

Hy,

..

.

Hammarlund

Part

.

16111-1

.

5066-1

35013-1

.

15612-Gl
15617-Gl

.

15618-1
15619-1

.

15615-2

.

15616-Gl
15611-1
15613-1

31030-2

.

31031-2

.

31488-1

4903-2

.

6143-1

16016-1.

.

15987-1

.

16071-1

.

19317-76BF

.

19309-278BF

.

19309-273BF

.

19309-49BF

.

19309-170BF

.

19309-193BF

.

19309-189BF

.

19309-9BF

.

19309-89BF

19309-31BF

.

19309-259BF

.

19309-69BF

.

19309-57BF

No.

Symbol

Designations

R33

R35
R36

R37

R38
R39
R40

R41
R42

R43

R44

R45
R46
R47
R48

R49
R50
R51
R52
R53
R54
R55
R56
R57
R58
R59

R60-61

R62
R63

R64
R65

R66

R67-68
R69

R70

R72

R73
R74
R75-76

R77

R78
R79
R80

R81
R82
R83

R84
R85
R86
R87-88
R89

DESCRIPTION

Resistor,

%

Resistor,

V2

Resistor,

112

SameasR31
SameasR35

Resistor,
Resistor,

Sa~::~t

Resistor,

112

SameasR35
SameasR2
Resistor,

I/

Resistor,

I/~

ReSistor,

%

SameasR39
SameasR31
SameasR42
SameasR35

SameasR2
SameasR39
SameasR31
SameasR42

SameasR35
SameasR2

SameasR31

Resistor,

1

Resistor,1megohm

%

SameasR35

Resistor,

112

SameasR22

SameasR36

SameasR47
SameasR35

Resistor,

3300
SameasR2
Resistor,

20

Resistor,

20

Resistor,

1000
SameasR35
SameasR22

Resistor,

%

Resistor,

1/

SameasR31
SameasR35
SameasR2
SameasR4

Resistor,

500K
Resistor,

10
Resistor,

1/

Resistor,

1/

SameasR86

Z

2

2

2

watt

watt
watt

watt

watt
watt
watt

watt

watt

watt

watt
watt

watt
watt

watts
watt
watt

1500

33K

20K

!iii·

10

240
1100
18K

2200

27K

variable

ohms

7500
10K

variable

ohms

470K

680

variable

ohms

2500
82K
120K

ohms

lOOK

22K

ohms

ohms

ohms

ohms

ohms

............•

ohms

ohms

ohms

ohms

ohms

ohms

ohms

ohms

ohms

ohms

ohms

ohms

Hammarlund

19309-53BF

.

19309-97BF
19309-178BF

....

I 19309-282BF

·1

19310-179BF

.

19309-1BF

\

19309-201BF

!

19309-208BF

l

~

19309-79BF

:1

1

I

~

I

!

f

~

'I'

:

I

19310-57BF

I

:

19309-121BF

!.

;
'.

19309-83BF

,

I

I

.

115366-1

I

.

I19397-41

.

I 19397-43

15363-1

19309-113BF
19309-45BF

15342-11

\

19396-1
19309-287BF
19309-181

Part

No.

BF

r22 ]

PARTS

LIST

(Continued)

Symbol

Designations

R90to92
R93

R94
R95
R96
R97

R98
R99

RI00
RI0l

RI03to110
RIll
R112

R113

R1l4

SIA,B,C,D
S2

S3
S4
S5A,B,C
S6
S7
S8
S9
SID

SI1

Tl

T2

T3

T4

T5

T6

T7
T8

T9

TI0

DESCRIPTION

SameasR2
Resistor,

50K

switch
SameasR46
SameasR86
SameasR36
Resistor,

112

SameasR78
Resistor,

1
SameasR35
Resistor,

25K
SameasR63
SameasR35
Resistor,

lfz

Resistor,

lfz

.SameasR4

Switch

assembly
Cry
Crystal
Switch,
Selectivity
Toggle
Toggle

Toggle
SameasS6
Switch

of

Switch,

return

Mixer

assembly,
C67, 69, 70,
R31

IF

assembly,
C97, 98, 99,
R35

Crystal

includes
112, 113, 114,
R41,

IF

assembly,
C117,
L38,

SameasT4,

C 123, 124, 125, 126,

L41,

Beat

assembly,
C130, 131, 132, 133, 134,
L44,

Transformer,

Output

Transformer,

3.5mcOsc.
includes

L35,

RF

includes

switch
SIA

variable

ohms,

S10 .

3.3

watt

360

watt

variable

ohms

390

watt

330K

watt

base

tal

selector

switch

conversion

switch

switch

switch
switch

"ON-OFF"

R93

DPDT,

plate

includes

Transformer

Transformer

Input

includes

Filter

CI07,

Y8

includes

118,119,120,

39, 40,

42, 43,

Frequency

includes

45, 46,

assembly,

CI03,

R38,

40,

assembly,

C2, 3,Lland

contacts

includes

megohms

ohms

ohms

ohms

and

spring

switch.

SPST

DPST

DPDT

spring

coil

L31,

L33,

assembly

110,
L36,

R49

includes

R54

Osc.

R76,77..

Audio

power

104,

Y7

for

part

32,

34

....

....

.....

III

.
.

.

..

.

.
.

.

.

37

.

..

Harnmarlund

Part

15342-21

19309-133BF

.

.

19310-211BF

.

15342-4

.

19309-162BF

.

19309-241BF

31234-Gl

15879-1

31469-1

15862-1

15856-1
15864-1
15866-1
15867-1

15880-1

31183-Gl

31116-Gl

31114-Gl

31102-G2

31102-G2

31106-Gl

.

31086-2
31029-2

31131-Gl

.

31387-GI

No.

Symbol

Designations

Tll

T12

T13

T14

T15

T16

T17

T18

T19

T20

T21

T22

T23

T24

T25

T26

DESCRIPTION

RF

Input

includes
switch
SIA

RF

includes
and
for

RF

includes
and
for

RF

includes
L5
for

RF

includes
L6
for

RF

assembly,
C26, 27,

and

for

RF

assembly,

C28, 29,
and
for

RF

assembly,
C30, 31, 32, LID,
107
contacts

RF

assembly,

C33, 34, 35,
109
contacts

RF

assembly,

C36, 37,

switch
SIB

RF

assembly,

C38, 39,

switch
SIB

SameasT16

C46, 47,
and
for

SameasT17,

C48, 49,
and
for

SameasT18,

C50, 51, 52,
108
contacts

SameasT19,

C53, 54, 55,

110

contacts

SameasT20,

C56, 57,
switch
SIC

assembly,

C4, 5,L2and

contacts

Input

assembly,

C6, 7, 8,

switch

SIA

Input

assembly,

C9,

switch

SIA

Input

assembly,

C12, 13, 14,

and

switch

SIA

Input

assembly,

C15, 16, 17,

and

switch

SIA

Transformer

L8,

switch

SIB

Transformer

Transformer

Transformer

Transformer

Transformer

switch

SIB

and

and

contacts

switch

SIC

switch

SIC

and

and

includes

L9,

switch

for

switch

for

L12

contacts

includes

L13

L15,

L16,

switch

for

switch

for

L19

contacts

contacts

10, 11,

contacts

contacts

contacts

includes

R7,

contacts

R8,

contacts

includes

SIB

includes

Lll,
SIB

includes

and

and

includes

R17, 104

contacts

includes

R18, 106

contacts

includes

L17,
SIC

includes

L18,
SIC

includes

and

for

for

for

for

103

105

R9,

R19,

R20,

L3

L4

....

RIO,

....

....

Hammarlund

Part

.

31390-GI

.

31393-Gl

.

31396-Gl

.

31399-Gl

.

31405-Gl

.

31386-Gl

.

31389-Gl

31392-Gl

31395-Gl

.

31398-Gl

.

31404-Gl

.

31386-Gl

.

31389-Gl

31392-Gl

31395-Gl

.

31398-Gl

No.

[23]

PARTS

LIST

-Continued

Symbol

Designations

T27

T28

T29

T30

T31

T32

T33

T34

XI-2

X3
X4

X5

X6to15

X16
X17
X18
X19

X20

X21

to

Ylto6

26

DESCRIPTION

SameasT21,

C58,

59,
switch
SiC

HF

includes
L25
contacts

HF

includes

and

for

HF

includes

L27

contacts

HF

includes
89,
contacts

HF

includes
93,
contacts

HF

includes
L30
contacts

Crystal

includes
63, 64, 65,
L21,
X3, 21

Tube
Tube
Tube

ceramic,
shield

Tube

ceramic,

shield
SameasXl
Tube
SameasX3
SameasXl
SameasX3
SameasXl
Crystal

for
Crystal,

note

contacts

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

Osc.

assembly,

and

Osc.

assembly,

switch

SiD

Osc.

assembly,

and

Osc.

assembly,

L28

Osc.

assembly,

L29

and

Osc.

assembly,

and

control

22, 23,

to26.........

socket,

socket,

socket,

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

socket,

.......0..........

socket,

socket,

crystals

CR-18/U,

below

includes

L20

and

for

C76, 77, 78,

switch

for

SID
C81, 82,

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

C83, 84, 85,

switch

for

C86, 87, 88,

and

for
C90, 91, 92,
for
C94, 95, 96,

switch
for

C60, 61, 62,

E7,

less

with

L26

contacts

SID

switch

SID

switch

SID

SID
assembly,

8, 11, 12,

R23,

24, 25,

miniature.

octal

.....

miniature

center

miniature

center

noval

.....

ceramic,

YltoY6.

see

..........

.....

....

.......

........

'0

Hammarlund

Part

31404-Gl

,.

3138S-Gl

31388-Gl

31391-Gl

31394-Gl

31397-Gl

31403-Gl

31409-Gl

15989-4
16082-1

15989-5

15989-3

16100-1

16092-5

31473-spec

No.

Symbol

Designations

Y7
Y8

Miscellaneous

DESCRIPTION

Crystal,
Crystal,
Chart,
Dial,
Dial,

Dial,
Dial,
Fuse

Knob
Knob
Knob
Knob
Knob
Knob

Knob,
Knob,
Knurled

Shaft
Shaft

Shaft
Snap

Spare
Spring,
Spring,

S.pring,

Spring,

Spring,
Spring,

Spring,
Spring,
Window,

Window,
Wrench,

6 11806-2

Wrench,

8 11806-3

Wrench,

3.5

mc

455

kc

frequency

band

indicator

Lamp

assembly

Gain)
Freq.
Phasing)
Gain)
(Selectivity)

soft
stiff

Detent
Switch

grounding

Coils
Coil

10 11806-4

Socket

main

tuning
vernier
Holder

and

Dial

and

Dial

Osc.)

and

Dial

and

Dial

and

Dial

and

Skirt
frequency
tuning

thumb
Coupling,
Coupling,

Coupling,

Button

fuse

Plug

cover

anti-blacklash

Band

Conversion

Crystal

IF

adjuster

Indicator

Retainer
Retainer

assemblies

Band
Tuning

Set

Screw

Set

Screw

Set

Screw

tuning

(Audio

(Beat
(Crystal

(RF

(large).

lock

screw

rigid

flexible
flexible

Change

Retaining

Indicator

control

control

Slide..

for
for

Dials

No.
No.
No.

'"

..

..

RF
RF

.

.

31130-1

.

31471-1
31463-1
31201-Gl

31453-1

.

31438-1

.

31439-1

.

15923-1

.

31227-G2
31227-G4
31227-G3
31227-Gl

.

31227-GS
31215-Gl
31434-Gl
31462-Gl
31495-1
31275-Gl

.
.

.

29619-2

.

31494-1

31239-1

31205-1

31125-1

31417-1

31023-1
31126-1

31004-1
31003-1

31282-1
31281-1

Hammarlund

Part

No

415-G3
415-G2

NOTE:

Hammarlund
Crystal
made

CR-18/U.
plusorminds
ance

00.75000to07.39999

07.40000

07.40000on7.40to14.8

07.40001to12.04499

12.0450

44.0450

NOTE:

which
double
occursatthe

Frequency

in

accordance

with

on

to
tc

the

conversion

Crystals

Specification

The

frequency

.005%.

HC-6/U

Signal

3.45to7.40

44.04499

54.00000

Since

7.40

intermediate

high

supplied

Control

with

or

Frequency

and

frequency

No.

Unit,

Signal

tolerance

The

holder

CR-7.

MC

band
band

mcisthe

frequency

since

endofthe

on

special

31473,

see

Corps

shallbein

signal

this

order,

for

useinthe

page8,shall

Specification

shall

be

frequency

is

changed

signal

frequency

3.45to7.40

per

be

within

accord-

0.455000

0.455000

3.955000

3.955000

3.955000

3.955000

at

for

mc

The

used

shallbestampedonthe

The

given

signal

following:

Add

IF

Frequency

(see

note

(see

and

and

[

2-+

below)

note

below)

divide
divide

band

and

14.8mcband,itis

as

wellasSignal

for

exactly

]

Signal

Frequency

oscillator

frequency

sumby3
sumby4

alsoatthe

7.40mcsignal

for

which

the

topofthe

or

actual

MC

low

necessarytospecify

Frequency

crystal

shall

frequency

operation.

be

determined

ModeofOperation

when

crystalisto

holder.

frequency

from

Fundamental
Fundamental
Fundamental
Fundamental
3rd

Harmonic

4th

Harmonic

endofthe

frequency

ordering

for

the

7.40
band

crystals

be

a

to

VI

o

[

~

C

IV

TOP

VI

F

W 0

G.

7

RECEIVER

CAPACITOR

SHIELD

TOP

A 0

VI

F

G.

EW

OF RECEIVER

PARE

7 ]

FUSE

COVER

RE

aVED

BOTTOM

TU

leu

FIG

VIEW

IT

9

OF

RECEIVER

SHIELD

[2

]

RE

OVED

R84

RI12

CI44
CI09

R47

R46
R45

SSA

R93

SID

SII

£14

59

r--

m

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S8

56

J3

N

ex:

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CI59

R91

,...,-X20

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R89

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R92

R86
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£3

£2

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CI69

R70

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CI48

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XI8

:r~~~~~~lii~~J:i1[~

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147

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L53

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Reo

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VIEW

FIG.

OF

[ 2

10

RECEIVER

SP-600-JX

o

o

u

ex:

SID
C71

C80
C74

C79

R29

R30
SIC

R21

C73
C72

R26

CI54

SIB

RII

C25

RI2

RI14

R6

CI65

15

X2

13--

--L24

R22
C75

L49
R27

C66
CI55

C43
C68
X5

R2

C22
R5

L7
C24
C20

XI

4

SIA
CI9

R2

L48

BOTTO

VIEW

OF

RF

CI53
C21

R3

RI
CI8
R

P

FOR

[ 30 ]

/

BOTTOM

VI

EW

FIG.

Of

fREQUENCY

[31]

12

CONTROL

UNIT

Notes

[ 32 ]

100w

ANT.

INPUT

1ST

RF

VI

6BA6

. R36

22.K

'-;9----

I

I

I

I

...

I >-0

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6BE6

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l()

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Q

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FIG.

13

CIRCUIT OIAGRAM OF RECEIVER

[ 33]-[34-

]

2ND

VIO

SBA6

Vl4

2ND

DEI

a Ave.

IF

51

CI38

~I

CI39

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3.0

MH

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GAL5

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LIMITER a

OUTPUT

METER

GAL5

------------

S58

n

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+

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_

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ISO

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FIG.

DIAGRAM

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13

OF

34]

ye-,.-"

RECEIVER

~

II:

-/0

V.

ID

m

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".F.

AF.

R70

10K

OUTPUT

LEVEL

SW.

RIOI

25K

DIODE

OUTPUT

ANT.

100""

INPUT

.......

t---...,oL-l_-I'-/-/

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ur::~--;:~------,

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I

I

I

I

I

I

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I
I

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+

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r----t---+1f-...:.::..;~::..=...:::..=.::=..:-:.:-:.:-:.:-:.:-~-:.:-:.:-:..::--=-..t::~

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en

It:

FIG.

DIAGRAM

13

OF

vIe

OA2

RECEIVER

I

J

~ON"o-l,......:S:..:7_

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CW

L.L..-

......

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~

ft.F.

AF.

"

2

OUTPUT

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10K

LEVEL

sw.

GALS

RIOI

25K

A.F.

METER

VI!!

LIMITER

OUTPUT

METER

GALS

AOJ.

a

[ 33]-[34 ]

MAIN

E3

GREEN-RED

T9

REAR

000

o

()

0 0

OSCILLATOR

TERMINAL

LOCATED
ON

OVER

BOTTOM OF CHASSIS.

13

NOTE:

SWITCHISMOUNTED

ON

TUNING

BY

BANDSWITCH

2-3

CLOSED BELOW 7.4

1-2

CLOSED ABOVE 7.4

BOARD

va

a

V6

BLACK

UNIT

R3B

SOCKETS

[§:H]J:lJ)f"Qj

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MC

T9

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11'1

II

l.\I

000

o

©

:.

II

'I

~I

MAIN

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T9

REAR

000

o

()

0 0

OSCILLATOR

TERMINAL

LOCATED
ON

BOTTOM

BOARD

OVER

V8 a

OF CHASSIS.

NOTE:

SWITCHISMOUNTED

ON

TUNING

BANDSWITCH

BY

2-3

CLOSED BELOW 7.4

1-2

CLOSED ABOVE 7.4

V6

UNIT

SOCKETS

[§"H~~r-lfl

CI28

OPERATED

MC
MC

13

BLACK

CONNECTION

~II

FIGURE

DIAGRAM-REC

NUMB

[3S]

BlA
BlA
BlA

-[

3<:

LS3

8

BLACK-WHITE
BLACK-WHITE
BLACK-WHITE

:ll:

I.>

~

:ll:

~

~

~

:r

III

~

II:::

R43

CONNECTION

FIGURE

DIAGRAM-

[3S

NUMBER

RECEIVER

] -

[36]

14

CHASSIS

"*

THESE
ONLY.

TERMINAL

NUMBERS

THEY

DO

STRIP.

ARE

FOR

NOT APPEAR

REFERENCE

ON

MAIN

E3

L53

a

o

CI2

GREEN-RED

T9

REAR

000

o

o 0 0

OSCILLATOR

TERMINAL

LOCATED
ON

BOTTOM

13

NOTE:
ON
BY

2-3
1-2

o

BOARD

OVER

va

OF CHASSIS.

BLACK

SWITCHISMOUNTED

TUNING

BANDSWITCH
CLOSED BELOW 7.4
CLOSED ABOVE 7.4

UNIT

OPERATED

T9

a V6 SOCKETS

~H~h9r-lfl

'----~I~

MC
MC

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ID

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I

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..

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R43

:.

II

BLACK-WHITE
BLACK-WHITE
BLACK-WHITE

S9

CONNECTION

FIGURE

DIAGRAM-

[ 3S ] - [

NUMBER

RECEIVER

36]

14

CHASSIS

*

THESE
ONLY.

TERMINAL

NUMBERS

THEY

STRIP.

DO

ARE

FOR REFERENCE

NOT

APPEAR

ON

CoN

'l

TO

C60ONFREQUENCY

CONTROL

NOTE:
CLOSEDONPOSITIONS

1-6

SHOWNINVFO

UNIT

THIS

OF

S2.

SWITCH

POSITION.

u

1,1,11,1,1,1,1

YELLOW-BLACK

hl,hhllhl

~u

NOTE:

NUMBERS

SWITCH-BASES
SAMEASTHOSE

ON

SCHEMATIC

GRAM

FOR

AND

SWITCH

COIL

BASES
AND SWITCH
ASSEMBLIES.

ON

ARE
DIA-

BLUE-BLACK

TO

CHASSIS

T2

TERMINAL

18S.

TI

GREEN·WHITE
TO

CHASSIS

EI4

TERMINAL

EI4

TERMINAL

FIGURE

CONNECTION

15

DIAGRAM

TUNING UNIT

TO

R72ONCHASSIS

*

THESE

NUMBERS

8

7

THEYDONOT

ARE

FOR

APPEARONTERMINAL

REFERENCE

ONLY

STRIP

Notes

[

38]

TO CI61

on

EI3

REO

T34

'*

THESE
THEY

NUMBERS

DO

NOT

ARE

APPEARONTERMINAL

FOR REFERENCE ONLY.

TO

SWITCH

SEE

TUNING

STRIP.

FIGURE

CON N ECTION DIAGRAM

FREQUENCY CONTROL

[

39]

S3

UNIT

DIAGRAM,--_C_6_0---,

16

UNIT

C65

FEED

THRU

Notes

October,
lithoinU.S.A. byD.L.

1952-IOM

Terwilliger Co.

SUPPLEMENT A

FOR

INSTRUCTION

MODEL

MODEL

APPLICABLE

TO MODELS

BOOK

ISSUE 4

SP-600-JX

AND

SP-600-J

21

TO

26

460

West

THE

34th

Manufactured

HAMMARLUND

St.

PrintedinU.S.A.

New York

by

MFG.

CO.

1,

INC.

New York,

U.S.A.

FOR

The

modifications

this

signal
signals

supplement

to

noise

up

to

provide
ratios

100-500
The improvement makes
er

satisfactory

direction

Normally

grid

return
connected
terminals
herein).
direction
this

lead
minal

The

of

following
plicable
Book

for

Page 14 -

TABLE
Replace

Page

15 -

finding

to

on

For

finder
to

E13.

to

Models

TUBE

1

TUBE

the
from

the

E13

receiver

the

issue

with

for

equipment.

white-black

Vl

rear

(see

system,

front

changes

4,

SP-600-(21

SOCKEr

page

SOCKEr

RESISTANCE-TABLE

Page

Replace

17 -

INPUT

TABLE

Under
180
100

with

APPROXIMATE

AT

IF&AF

4

APPROX.
microvolts
microvolts.

page

INPUT,

to

USE

WITH

covered

improved

for
microvolts.
the

receiv-

use

with

and V2,

of

tvo

Fig.

use

re-connect

screw

are

Instruction

VOLTAGES

14

herein.

TERMINAL

2

15

herein.

SIGNAL

STAGES

change

read

SUPPLEMENT

MODELS

by

input

lead,
is

screw
15
in

a

ter-

ap­to

26)

-

-

A

sp-600-

Pages

21

(21

to

TO

24 -

26)

LIST

Replace

with

pages

herein.

Note: T2 -

Gl,

contained
ohms,

This

31116-G2 and
E13.
when making

IF

used

1/2

resistor

This

Transformer

in

earlier
R94,
watt

is

should

replacement

Page 29 - FIG. 10

OF

RECEIVER

Items
Items

Note:

Page 30 - FIG.

RF

Ignore
in

c163,
are

Rl16

c165 and

on

the

Ignore

and R53,

PLATFORM

item

Fig.

R48, R94,

located

front

items

called

11

c165,

II.

Page 33-34 - FIG. 13

GRAM

OF

RECEIVER

Page

Replace

35-36

with

page 33-34

- FIG. 14
DIAGRAM-RECEIVER
Replace

Page

37 - FIG. 15

GRAM-TONING

Replace

Page 39 - FIG.

with

with

page

UNIT

page 37

16
GRAM-FREQUENCY
Replace

vith

page 39

TABLE

21

5 -

PARTS

to

24

- 31116-

models,

Resistor,

1100

- 19309-208BF.

is

omitted

re-located

be

checked

of

BOTl'OM

VIEW

Rl15

on

E13.

R53

are

located

end

of

E17.

c163,

out

BOTrOM

in

VIEW

R48

Fig.

called

CIRCUIT

herein.

CONNECTION

CHASSIS

35-)9

herein.

CONNECTION

herein.
CONNECTION
CONTROL

UNIT

herein.

in

on

T2.

and

10.

OF

out

DIA-

DIA-

DIA-

This

(25

cycles)

Frequency

dications
graphs
erence

Unit,

do

not

and
to

should

apply

The Power

this

model

for

operation

25

cycle
operate
line

frequencies
cycles.
primary
ed.

These

Receiver-Model

does

not

Control

in

the

Unit.

tert,

diagrams,vith

the

Frequency

be

ignored

to

Model

Transformer

is

specially

onasingle

power

line

and

satisfactorily

from 25

Eight

voltage

taps

screw

taps

cover

MODEL

SP-600-J25

have

the

All

photo-

ref­Control
as

they

sp-600-J.

used

designed

phase
will

on

power

to
terminal
are

provid-

a power

SUPPI.»tENT

FOR

USE

WITH

SP-600-J(25

line
volts.

in-

nected
ped
the
operation

mary

former
former

in

agrees
voltage.

for

60

er,
exceptions
same

respects.

CYCLES)

source

The 117

when

from

the

receiver

make

tap

lead

is

connected

tap

with

The

manufacturer's

the

25

T8,

is

as

Model

range

of

volt

the

receiver

manufacturer.

is

installed

sure

on

the

which

cycle

the

m~st

power

power
31029-3.
this

receiver

sp-600-JX

90

to

tap

that

power

to

the

nearly

source

part

transform-

With

in

270
is
is

for

the

trans-

trans-

number

the

is

all

con­ship-

When

pri-

above

the

SUPPLEMENT

FOR

USE

WITH

SP-600-JL

Frequency

MODELS

Range--Models SP-600-JL and SP-600-

JLX have a frequency rangeof.100 to .400 me and

1.35 to 29.7mein

Crystal Frequency

not have
in
to
they

Model

the

the

text,

the

Frequency

do not applytoModel SP-600-JL.

SP

Control U nit

In

Position

of

six

bands

.100 to .200
.200to.400

1.35

3.45

7.40 to 14.8

14.80 to 29.7
Control·-

Frequency

photographs

Control

600·

]LX

includes

as described in

as follows:

me
me

to 3.45

me

t07.40mc

me

me

Model SP-600·JL docs

Control

and

Unit. All indications

diagrams, with reference

Unit,

should be ignored as

the

Crystal Frequency

the

text.

DESCRIPTION

AND

SP-600-JLX

Alignmentofthe

With

reference to alignmentofthe

HF

Oscillator, see page 13,

the

for

.100 to .200 me

RF

For the .100 to .200 me

and

adjust Cat.200 me.

For

the

.200 to .400 me

at

and adjust C

Parts List

SP-600-JLX -

23

and

24.

Delete Items

for 54

:0

Delete Items

for 29.7 to 54.0

Add

to Parts List

me

and

.400 me.

Errata

With

TI0,

1.35

me

band).

TIS,
me

band).

.200 to .400mebands:

Amp~r

and

and

Addenda

andHFOscillator -

the

alignment frequencies

.200to.400 me bands are:

band;

AdjustLat

band;

AdjustLat

for SP-600·JL

reference to Table

16,22and

21, 27

the

following, for

and

T28

T33

RF

Amplifier and

.100 me

.200 me

No.5,

(coil assemblies

(coil assemblies

the

.100 to .200

Hammarlund

Part

No.

and

pages

TIO

TI6

T22

T28

TIS

T21

T27

T33

RF

Input

Osc.

Input

Osc.

assembly,

Pt.

shunt

resistor

assembly,

Pt.

assembly,

Pt.

shunt

shunt

resistor

assembly,

Pt.

No.

capacitor

capacitor

Pt.

No.

and

No.

capacitor

capacitor

Pt.

No.
and

capacitor

1stRFTransformer

fixed

2ndRFTransformer

fixed shUht

shunt

HF

capacitor
23071-65, coil

RF

capacitor

1stRFTransformer

fixed

2ndRFTransformer

fixed
shunt

HF

capacitor
23071-66, coil

.100to.200 me,

23063-68C, coil

assembly,

assembly,

No.

.100to.200

23OO3-91C,

switch
.200to.400 me,

23063-68C. coil

assembly,

Pt.

assembly,

No. 19309-182BF

.200to.400 me,

23OO3-90C,
switch

.100to.200

Pt.

No.

23063-68C, coil
.100to.200 me,

Pt.

No.

19309-182BF

me,
102

contacts

.200to.400 me,

No. 23063-68C, coil

.200to.400

Pt.

No.

204

contacts

includesC2trimmer,43mmf

and

switch

contacts

me,

includes

and

2E063-68C, coil, 200,000

and

i!lclu:les C76

mmf

for

includes

and

switch

23063-68C, coil, 200,000

and

includes

mmf

for

SID.

includes

switch

fixed

SID...............................

fixed

trimmer,75mmf

series

CI6

trimmer,43mmf

contacts

includes

and

me,

includes

switch

contacts

C94

trimmer,68mmf

series

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

for

C26

switch

C46

contacts

padder

for

C38

switch

C58

padder

[ 3 ]

fixed

SIA.

trimmer,43mmf

contacts

trimmer,43mmf
ohm~watt
for

SIC...........

capJ.citor

SIA.

trimmer,43mmf

contacts

trimmer,43mmf

ohm~watt
for

SIC.

capacitor

shunt

. . . . . . . . . . . 31381-Gl

for

SIB.

fixed

fixed

shunt

Pt.

fixed

shunt

. . . . . . . . . . . . 31334-Gl

for

SIB.

fixed

. . . . . . . . . . 31383-Gl

fixed

shunt

Pt.

No.

. . . . 31382-Gl

. 3138O-G2

3138O-Gl

No.

31379-Gl

. 31383-G2

TUBE

SOCKET VOLTAGES-TABLE 1

Voltagetochassis. Measurements made

were

made

with

asterisk

above 10 volts

and

controlatminimum

TUBE

Y·1
Y·1
Y,2
Y,2

Y·3

Y,3

Y,3
Y·3

Y,4

Y·5
Y,6

Y·6
Y·6
Y,6

Y·7
Y,7

Y·7
Y,7

Y,8
Y,8

Y·9
Y,9

Y,10
Y·10
Y·II
Y·ll

Y,12
Y,12
Y,13
Y,14

Y·15
Y,16
Y,16
Y,17
Y,I7

Y·18
Y,19

Y,19
Y·20

Y,20

1

*-1
*-41

*-1
*-41

-

-

-

- -

130 -

-

-

- -

-

-

*-1
*-54

*-1

*-54

0

30
*-1
*-54
*-1
*-54
*-7.8
*-7.8

-

-

25

-

-

50
57

-

-

150

-

-

-

-

Measurements Corp. Model 62

the

10 volt scale for voltages below 10 volts. Line voltage 117,nosignal input.

and

CW,MOD

2

-

-

-

-

-

-

-

1.2 *6.3ae - 140

-

3

*6.3ae
*6.3ae ­*6.3ae.
*6.3ae -

-

-

-

- - -

*6.3ae

*6.3ae
*6.3ae

- *6.3ae -

-

-

-

-

-

- *6.3ae

-

-

-

- *6.3ae

-

*6.3ae - 260

*6.3ae

*6.3ae
*6.3ae
*6.3ae

*6.3ae - 30
*6.3ae
*6.3ae -

*6.3ae

- *6.3ae

-

-

-

-

-

-

-

-

*6.3ae
*6.3ae

*6.3ae ­*6.3ae
*6.3ae
*6.3ae

1.5

1.6

- 260 228

-

-

300

320
*-96
*-97

280

-

-

-

*6.3ae

*6.3ae

with

switchon"CW"

SOCKET

4

5

6

200 95

-

260 245 - -

- 210

260

- -

- -

- -

130 -

-

225 -

-

260 -

-

225

215 125

-

265

-

215

-

265 0

-

-

- 205

260
205

-

- 260 150

-

210

-

235 140

- 210 40

240 45

-

*22

-

-

-

-

265

-

-

-

-

-

25

-

-

-

-

-

150

-

-

-

-

0

95

245

0

150

0

150

110

80
75

245

0

-

- -

90

150

90

140

-

-

-

210
240

-

-

-

-

-

-

-

Weston

Model 663

VTVM.

AVC

PIN

NUMBERS

7 8 9

-

-

*6.3ae
*6.3ae
*6.3ae
*6.3ae

-

-

*-1
*-55
*-1

*-55

304

.4

0

0

- -

-

-

-

-

-

-

-

-

-

-

-

-

-

*6.3ae

*6.3ae

-

-

-

*-96
*-97

The

tap normal.

-

- -

- -

265
265
290
290

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

6

....

7.4 *6.3ae
12
13

-

300
320

-

-

Volt,Ohmmeter,

except those indicated by

500 volt scale was used for all voltages

Audio

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

--

-

-

-

-

-

-

--

-

-

-

*6.3ae .

-

-

-

-

-

-

-

MODE

RF

Gain max.

RF

Gain min.

RF

Gain max.

RF

Gain min.

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain max.ormin.

RF

Gain max.ormin.

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain

RF

Gain
Frequencies below 704me
Frequencies above
RFGain

RF

Gain min.

RF

Gain max.
RFGain
RFGain
RF

Gain min.
RF

Gain
RF

Gain min.~FO Injection max.
RF

Gain max.ormin.

RF

Gain

RF

Gain max.ormin.

RFGain
RFGain
RFGain

RFGain
RF

Gain max.ormin.

RF

Gain

RF

Gain

RF

Gain max.

RF

Gain min.

OF

OPERATION

max.-YFO
max.-Crystal

min.-YFO

min.-Crystal

max.-Freqs.
min.-Freqs.

max.-Freqs.
min.-Freqs.
max.-Freqs.
min.-Freqs.
max.-Freqs.
min.-Freqs.

7Ame

max.

min.
max.

max.-BFO

max.ormin.

max.
min.
max.

min.

max.-*5

min.-*5YOle

Yae

operation

Freq.

Control

operation

Freq. Control

below

7Ame

below

7Ame

above

7Ame

above

7Ame

below 704me

below 7Arne

above ?o4me

above

7Ame

Injection max.

Pin2to

Pin

2 to

Pin

Pin

Gain

8

8

[ 14 ]

TABLE

No.5

Symbol

Designations

CIA

to

H

C3
C5
C6
C8
C9
Cll
C12
C14
CIS
C17
CIS
C19to24
C25
C27
C29
C30
C32
C33
C35
C37
C39
C40

to
C47
C49
C50
C52
C53
C55

C57
C59
C60
C6l
C62
C63
C64
C65
C66
C67
C68
C69
C70to74
C75
C77
C78
C79
C80
C82
C83
C85
C87
C88
C89
C91
C92
C93
C95
C96
C97
C98
C99
Cl02to104

Cl05
CI06
Cl07
Cl08-l09

ClIO

Clll
C1l2-113
C114

44

DESCRIPTION

Capacitor,

8

Capacitor,

SameasC3

Capacitor,
Capacitor,
Capacitor,

Capacitor,
Capacitor,7mmf
Capacitor,
Capacitor,
SameasCll
Capacitor,
SameasC3
SameasC18
SameasC3
SameasC3
SameasC6
SameasC8
SameasC9
SameasCll

Same

Capacitor,
SameasC3
SameasC3
SameasC3
SameasC6
SameasC8
SameasC9

SameasCll
SameasC18
SameasC39

Capacitor,

SameasC3

Capacitor,
Capacitor,

Same
Capacitor,

SameasC3
Capacitor,
SameasC3
Capacitor,
SameasC3
SameasCIS
Capacitor,
Capacitor,
Capacitor,S
SameasC79
Capacitor,
Ca,pacitor,10mmf
Capacitor,
Capacitor,
SameasC60
Capacitor,
SameasCIS
Capacitor,
Capacitor,
SameasC39
Capacitor,
Capacitor,
Capacitor,
SameasC39
SameasC98
SameasC3
SameasC98
SameasC69
SameasC98
SameasC18
Capacitor,

SameasC18
Capacitor,

sections

as

CIS

as

C3

variable,

.01

mfd

20

mmf
2400
33

mmf

1500
1000

15

mmf.._..23061-l55J

100

mmf

51

mmf

12

mmf
2200

39

mmf

variable

85

:nmf
220

mmf

3300
404

mmf

mmf

810

mmf

1200
120

mmf

190

mmf

51

mmf

379

mmf

610

mmf

65

mmf

.022

mfd

variable

270

mmf

mmf
mmf
mmf

mmf

mmf

mmf

.....

.....

.....

....

.....

....

....

....

....

....

'"

.,.

PARTS

Hammarlund

Part

34001-Gl

_ 23012-1

23003-4lC

23011-40C
23003-45C
230ll-62C
2306l-l68F
230l1-58C

23003-94C

23003-87C

23023-65UJ
23011-17C

23003-47C
ll726-GI09
23071-59
23003-102C

23011-69C

23071-67

23023-8UJ
23072-53

23003-2B
23011-60C
23071-50

23071-64
23023-45UJ

23071-63
23072-52

23071-58
23013-1

11

776-G 1

23003-104C

No.

LIST

Symbol

Designations

C1l5-ll6

C1l7
C1l8

Cll9

C120

C121-122
C123
C124
C125
C126
C127
C128

C129A,
C130

C131
C132
C133
C134
C135
C136
C137
C138-139

C140
C141-142
C143

C144
C145
C146
C147
C148

C149

C150

C151

C152
C153
C156-157

C158

C161A,B,C

C162
C163

C164

C165-166
C167
C168-169
E2

E3
E4-5
E6
E7

E8
E9to12
E13

E14

E15-16
E17
E18

F1

F2

IIto4

J1

B

to

155

to

160

DESCRIPTION

SameasC3
SameasC69
Same

as
Capacitor,
Capacitor,
SameasC3
SameasC98
SameasC69
SameasC1l9
SameasC120
SameasC3
Capacitor,

HS

Capacitor,

HS
Capaci
Capacitor,
SameasC8
SameasC13l
SameasC39

SameasC3
SameasC98
Capacitor,

SameasC92

SameasC131

Capacitor,
Capacitor,
Capacitor,

SameasC15
SameasC98
SameasC143
SameasC98
SameasC143
Capacitor,

800V

SameasC12S

Capacitor,
SameasC3
SameasC98
SameasC128
Capacitor,

450V,

Electrolytic

SameasC98

Capacitor,
SameasC131

SameasC3

SameasC98

SameasC152

4

Screw

Audio

4

Screw

andAVC

1

Solder

(left)
1

Solder

(right)

2

Solder
SameasE4
SameasE6

10

Solder

6

Solder

8

Solder

15

Solder

3

Solder

(meter)

Fuse,

Fuse,
Dial

Mazda

Antenna

UG-103/U

C98

300
1300

10

Can,

Electrolytic.

2 x .05

Can,

Paper

tor,27mmf

430

.25

100
5100
.05

2500

.01

3 x 20

HS

.25

Terminal,

Output

Terminal,

Terminal
Terminal

Terminal

Terminal
Terminal
Terminal

Terminal

Terminal

1.6A

Fusetron

%

Amp

Lamp,

input

Can,

No.

mmf

mmf

mfd,

100V

mfd,

mmf

mfd,

200V

mmf

mmf

mfd

mmf,

mfd

500V 23072-11

mfd,

mfd,

600V

Diode

strip
strip

strip.

Board

strip.
strip.

strip

strip

47

socket,

Hammarlund

Part

23003-105C
23011-61C

15462-1

15461-1
23023-71 U J
23003-109C

2391l-79E

23024-24SL
23015-16A
23911-77E

23070-40

15463-1

23915-1

31141-1
31480-1

16650-9

16650-11

16650-12

33928-G1
16650-10
31163-G1
31162-Gl

31454-G1
15893-1

15928-13

16004-1

_.._ 15959-1

No.

[21]

PARTS

LIST

(Continued)

Symbol

Designations

J2
J3

J5
L7

L14
L21
L22

L23
L24

L35
L46

L47

L48
L49-50
L51

L52
L53

M1
PI
P2

P3
P4
R1
R2
R3
R4
R5
R6

R7-8
R9
R10-11
R12

R13

R14

R15
R16
R17-18
R19
R20-21
R22-23

R24-25
R26

R27
R28
R29-30

R31
R32

DESCRIPTION

IF

Output

SO-239

Phone

Power
RF

192
SameasL7
RF

Choke,1millihenry.

RF

10
RF

25
SameasL7
SameasL7
RF

12

RF

3.0

RF

Choke,2ohms
RF
1st

Filter

170

2nd

440

IF

Output

Tuning

Power
Antenna

UG-102/U

Antenna

Connector

Cable

PL-259

Resistor,

1/3

Resistor,

1/

2

Resistor,

I/

Z

Risistor,

V2

Resistor,

1/

2

SameasR4
Resistor,

1/

2

Resistor,

V2

Resistor,

I/

Z

Same
Same

SameasR3
Same
Same

SameasR7

SameasR9

SameasRIO

Resistor,

1/

2

Resistor,

1/

2

SameasR1
Resistor,

1/

2

Resistor,

112

SameasR4
Resistor,

V2

SameasR5

Socket,

Jack,

receptacle

Choke,

microhenries

Choke,

millihenries

Choke,

millihenries

Choke,

microhenries

Choke,

millihenries

Choke,

Filter

watt
watt

watt

Choke,

ohms
ohms

Meter

plug

Input
Adapter

Connector

(for

510K

watt

10K

watt

33K

watt

1000

watt

510

watt

51

watt

24

watt

22

watt

as

R2

as

Rl

as

R5

as

R4

47K

watt

180

watt

150
6800

2200

2.7
dc

Choke,20Hy,

dc

transformer.

JK-34-A

and

....

dc

ohms

8.5

cord

Plug,

UG-104/U.

Plug

J2)

ohms

ohms

ohms

ohms

ohms

ohms
ohms
ohms

ohms

ohms

ohms

ohms

ohms

.
.

.

....

.

.

dc.

Hy,

.
.
.

..

.

.
.
.
.
.
.

.
.
.

.
.

.
.

.

Hammarlund

Part

No.

16111-1

5066-1

35013-1
15612-G1
15617-G1
15618-1
15619-1

15615-2
15616-G1

15611-1
15613-1

31030-2
31031-2

31488-1

4903-2

6143-1
16016-1
15987-1
16071-1

19317-76BF
19309-278BF
19309-282BF
19309-49BF
19309-170BF

19309-193BF
19309-189BF
19309-9BF

19309-89BF
19309-31BF

19309-259BF
19309-69BF

19309-57BF

Symbol

Designations

R33

R35
R36
R37

R38
R39
R40

R41
R42

R43
R44
R45

R46
R47
R48
R49

R50
R51
R52
R53
R54
R55
R56
R57
R58
R59

R60-61
R62
R63

R64
R65
R66
R67-68
R69

R70

R72

R73
R74
R75-76

R77

R78
R79
R80

R81

R82
R83
R84

R85
R86
R87-88

R89

DESCRIPTION

Resistor,

112

Resistor,

l/

R~i:s~:tt

Same
SameasR35
SameasR3

Resistor,

1

SameasR31 I
Resistor,

l/

SameasR35
SameasR2

Resistor,

l/

Resistor,

V2

Resistor,

112

Resistor,1megohm

1fz

SameasR31
SameasR42
SameasR35
SameasR2
SameasR2
SameasR31
SameasR42
SameasR35
SameasR2
SameasR31
Resistor,

1
SameasR48
SameasR35
Resistor,

l/

SameasR22
SameasR36
SameasR47
SameasR35
Resistor,

3300
SameasR2
Resistor,

R;~s~~~t

20
Resistor,

1000
SameasR35
SameasR22
Resistor,

1/

Resistor,

1/

SameasR31
SameasR35
SameasR2
SameasR4
Resistor,

500K

Resistor,

10

Resistor,

1/

Resistor,

1/

SameasR86

1500

watt

lOOK

watt

Z

2~~

as

R31 I

20K

watt

10

watt

Z

240

watt

Z

1100

watt

18K

watt
watt

2200

watt

27K

watt

Z

variable

ohms.

7500

Hii{

watt

variable

ohms.

470K

watt

2

680

2

watt

variable

ohms

2500

watts

82K

watt

2

120K

watt

2

ohms

ohms

..

~~~.s

ohms

ohms

ohms

ohms

ohms

ohms

ohms

. .... . ...15366-1

ohms

'~h~;'"

. . . . . . ...15363-1

ohms

ohms

ohms

ohms

ohms

Hammarlund

Part

!19309-53BF

I

19309-97BF

·1

19309-178BF

i

1

,

"

19310-179BF

I

i

19309-1BF

II

I 19309-201

I

19309-208BF

i

i

19309-79BF

I

19309-121BF

I

.

I

19310-57BF

.

!

19309-83BF

i

'

.119397-41

19397-43

II

19309-113BF

'I

19309-45BF

!

15342-11

.

19396-1

.

\

19309-287BF

.

I

19309-181BF

No.

BF

I 22 ]

PARTS

LIST

(Continued)

Symbol

Designations

R90to92
R93

R94
R95
R96
R97

R98
R99

RI00

R101
RI03

to
RIll
R112

R113

R114
RI15-116

SIA,

B,C,

S2
S3
S4
S5A,B,C
S6
S7
S8
S9
S10

SI1
Tl

T2

T3

T4

T5

T6

T7

T8
T9

TI0

SameasR2

Resistor,

SameasR46
SameasR86
SameasR36
Resistor,

1/

SameasR78
Resistor,

SameasR35
Resistor, variable

110

25K
SameasR63
SameasR35
Resistor,

1f2

Resistor,

1f2

SameasR4

Resistor.

~

Switch

D

Cry
Crystal
Switch,
Selectivity
Toggle
Toggle
Toggle
SameasS6
Switch

of

Switch,

return

Mixer

assembly,
C67, 69, 70,
R31 .

IF

assembly,
R35

Crystal

R41,

IF

assembly,
C117,
L38,

SameasT4,

C 123, 124, 125, 126,

L41,

Beat

assembly,
C130, 131, 132, 133, 134
L44, 45, 46,

Transformer,

Output

Transformer,

3.5
includes

L35,

RF

includes
switch
SIA

DESCRIPTION

50K
switch

1

assembly

C97, 98, 99,

includes
112, 113, 114,

variable

ohms,

S10 .

3.3

watt

2

360

watt

ohms

390

watt

330K

watt

1.5

watt

base

tal

selector

switch

conver-sion

switch

switch

switch

switch
"ON-OFF"

R93

DPDT,

plate

includes

Transformer

Transformer

Frequency

me

Input

includes

Filter

CI07,

Y8

includes

118,119,120,

39, 40,

42, 43,

includes

Osc.

assembly,

CI03,

R38,

40,

assembly,

C2, 3,Lland

contacts

megohms

megohms

and

coil

includes

Audio

includes

ohms

ohms

ohms

spring

switch.

SPST

DPST

DPDT

spring

L31,

L33,

assembly

110,111
L36,

R49

R54

Osc.

R76,

77

power

104,

Y7

for

.

.
.

.

..

.
.

part

.
.

32,

34

.

37

.

....

....

..

.

..

.....

, .

Hammarlund

Part

15342-21

.

19309-133BF

.

19310-211BF

.

15342-4

.

19309-162BF

.

19309-241BF

19309-125BF

31234-Gl
15879-1
31469-1
15862-1
15856-1
15864-1
15866-1
15867-1

15880-1

31183-Gl

31116-G2

31114-Gl

31102-G2

31102-G2

31106-Gl

31086-2
31029-2

31131-Gl

31387-G1

No.

Symbol

Designations

Tll

T12

T13

T14

TIS

T16

T17

T18

T19

T20

T21

T22

T23

T24

T25

T26

DESCRIPTION

RF

Input

includes
switch
SIA

RF

includes
and
for

RF

includes

and

for

RF

includes

L5
for

RF

includes

L6
for

RF

assembly,
C26, 27,

and

for

RF

assembly,
C28, 29,
and
for

RF

assembly,
C30, 31, 32,

107

contacts

RF

assembly,
C33, 34, 35,
109
contacts

RF

assembly,
C36, 37,
switch
SIB

RF

assembly,

C38, 39,

switch

SIB

SameasT16

C46, 47,
and
for

SameasT17,

C48, 49,
and
for

SameasT18,

C50, 51, 52,

108
contacts

SameasT19,

C53, 54, 55,

110
contacts

SameasT20,

C56, 57,
switch
SIC

assembly,

contacts

Input

assembly,

switch

SlA

Input

assembly,

switch

SIA

Input

assembly,

and

switch

SIA

Input

assembly,

and

switch

SIA

Transformer

switch

SIB

Transformer

L9,

switch

SIB

Transformer

and

switch

Transformer

and

switch

Transformer

L12

contacts

Transformer

L13

contacts

switch

SIC

switch

SIC

and

and

contacts

C4, 5,L2and

for

C6, 7, 8,

C9, 10, 11,

C12, 13, 14,

CIS,

includes

L8,

contacts

includes

contacts

includes

for

includes

for

includes

includes

includes

LIS,

contacts

L16,

contacts

switch

for

switch

for

L19

contacts

contacts

contacts

16, 17,

contacts

R7,

103

R8,

105

LI0,

SIB

Lll,
SIB

and

for

and

for

R17, 104

includes

R18, 106

includes

L17,
SIC

includes

L18,

SIC

includes

and

for

L3

R9,

....

RIO,

....

R19,

....

R20,

....

Hammarlund

31390-G1

31393-Gl

L4

31396-Gl

31399-Gl

31405-Gl

31386-G1

31389-Gl

31392-Gl

31395-G 1

31398-Gl

31404-Gl

31386-Gl

31389-Gl

31392-Gl

31395-Gl

31398-Gl

Part

No.

[23]

PARTS

LIST

-Continued

Symbol

Designations

T27

T28

T29

T30

T31

T32

T33

T34

XI-2
X3
X4

X5

X6to15
X16
X17
X18
X19
X20
X21to26

Ylto6

DESCRIPTION

SameasT21,

C58,

59,

switch

SIC

HF

includes

L25

contacts

HF

includes
and
for

HF

includes
L27
contacts

HF

includes

89,

contacts

HF

includes
93,
contacts

HF

includes
L30
contacts

Crystal

includes
63, 64, 65,

L21,

X3,21to
Tube
Tube
Tube

ceramic,

shield

Tube

ceramic,

shield
SameasXl
Tube
SameasX3
SameasXl
SameasX3
SameasXl
Crystal

for
Crystal,

note

Osc.

and

Osc.

switch

SID

Osc.

and

Osc.

L28

Osc.

L29

Osc.

and

control

22, 23,

socket,

socket,

socket,

socket,

socket,

crystals

below

contacts
assembly,

assembly,

assembly,

assembly,

assembly,

and

assembly,

socket,

CR-18/U,

includes

L20

and

for

C76, 77, 78,
switch

for

SID

C81, 82,

contacts

C83, 84, 85,

switch

for

SID

C86, 87, 88,

and

switch

for

SID

C90, 91, 92,

switch

for

SID

C94, 95, 96,
swi

tch

for

SID
assembly,

C60, 61, 62,

E7.

8, 11, 12,

R23,

24, 25,

26

miniature.
octal
miniature

less

center

miniature

with

center

noval

ceramic,

YltoY6.

see

....

L26

....

....

....

.....

...

" 16100-1

Hammarlund

Part

31404-Gl

31385-Gl

31388-Gl

31391-Gl

31394-Gl

31397-Gl

31403-Gl

31409-Gl
15989-4
16082-1

15989-5

15989-3

16092-5
31473-spec

No.

Symbol

Designations

Y7
Y8

Miscellaneous

DESCRIPTION

Crystal,
Crystal,
Chart,
Dial,
Dial,

Dial,
Dial,
Fuse
Knob

Knob
Knob
Knob
Knob
Knob

Knob,
Knob,
Knurled

Shaft
Shaft

Shaft
Snap

Spare
Spring,
Spring,

Spring,

Spring,

Spring,
Spring,

Spring,
Spring,

Window,
Window,
Wrench,

6 11806-2

Wrench,

8 11806-3

Wrench,

3.5

me

455

kc

frequency

band

indicator

Lamp

assembly

Gain)
Freq.
Phasing)
Gain)
(Selectivity)

soft
stiff

Detent
Switch

grounding

Coils
Coil

10 11806-4

Socket

main

tuning

vernier

Holder

and
and
and

and

and

and

frequency

tuning

Coupling,
Coupling,

Coupling,

Button

fuse

assemblies

tuning
Dial
Dial

Osc.)

Dial

Dial

Dial

Skirt

lock

thumb

Plug

cover

anti-blacklash

Band

Change

Conversion

Crystal

IF

adjuster

Indicator
Retainer

Retainer

Band
Tuning

Set

Screw

Set

Screw

Set

Screw

(Audio
(Beat
(Crystal

(RF

(large).

screw

rigid

flexible
flexible

Retaining

Indicator

control

control

.....

Slide..
for

for

Dials.

No.
No.
No.

...

..
"

..

RF
RF

.

31130-1

.

31471-1
31463-1
31201-Gl

31453-1

.

31438-1

.
.

31439-1

15923-1

.

31227-G2
31227-G4
31227-G3

31227-Gl

.

31227-G5
31215-Gl
31434-Gl
31462-Gl
31495-1

31275-Gl
.
.

.

29619-2
.

31494-1

31239-1

31205-1

31125-1

31417-1

31023-1

31126-1

31004-1

.

31003-1

31282-1

31281-1

Hammarlund

Part

No

415-G3
415-G2

NOTE:

Hammarlund
Crystal
made
CR-18/U.
plusorminus

ance

00.75000to07.39999

07.40000on3.45to7.40

07.40000on7.40to14.8

07.40001to12.04499

12.0450

44.0450

NOTE:

which
double
occursatthe

Frequency

in

accordance

with

to
tc

the

conversion

Crystals

Specification

The

frequency

.005%.

HC-6/U

Signal

44.04499

54.00000

Since

intermediate

high

supplied

Control

with

or

Fuquency

7.40
and

frequency

No.

Unit,

Signal

tolerance

The

holder

CR-7.

band
band

meISthe

frequency

since

endofthe

on

31473,

see

MC

signal

this

soecial

for

page8,shall

Corps

Specification

shall

shallbein

frequency

is

changed

signal

3.45to7.40

order,

useinthe

be

within

accord-

0.455000

0.455000

3.955000

3.955000

3.955000

3.955000

frequency

per

for

mc

[ 24 ]

be

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Signil]

used

shallbestampedonthe

The

~iven

signal

following:

Add

IF

Frequency

(see

note

(see

and

and

at

below)

note

below)

divide
divide

band

and

14.8mcband,itis
as

wellasSignal

for

exactly

Frequency

oscillator

frequency

sumby3
sumby4

alsoatthe

7.40mcsignal

for

which

topofthe

or

actual

MC

low

necessarytospecify

Frequency

crystal

shall

frequency

operation.

be

determined

ModeofOperation

when

the

crystalisto

holder.

frequency

Fundamental
Fundamental
Fundamental
Fundamental
3rd

Harmonic

4th

Harmonic

endofthe

frequency

ordering

for

from

7.40

crystals

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[ 35 ] - [ 36 ]

BLACK-

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NUMBER

RECEIVER

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FIGURE

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[35]-(36)

NUMBER

RECEIVER

14

CHASSIS

*

THESE
ONLY THEY

TERMINAL

NUMBERS

DO

STRIP.

ARE

FOR REFERENCE

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ON

NOTE: NUMBERS

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SWITCH-BASES

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SCHEMATIC DIA-

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AND SWITCH
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1-6OF52.

SHOWNINVFO

UNIT

THIS

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TI

YELLOW-BLACK

FIGURE

15

CONNECTION DIAGRAM

BLUE-BLACK
TO

CHASSIS

T2

TERMINAL

1818.

GREEN'WHITE

TO

CHASSIS

EI7

TERMINAL

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7

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FOR REFERENCE ONLY.

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TO SWITCH

SEE

TUNING

STRIP.

FIGURE

CON N ECTION DIAGRAM

FREQUENCY CONTROL

S3

UNIT

16

C65

DIAGRAM

UNIT

C60

FEED
THRU

[

39]