Hammarlund SP-600-JX User guide

GENERAL

PURPOSE

COMMUNICATIONS

MODEL

INSTRUCTIONS

SP-600-JX

RECEIVER

460

West

THE

34th

ISSUE

HAMMARLUND

St.

2 - MARCH

Manufactured

New York

1951

by

MFG.

CO.

INC.

1,

New York,

U.S.A.

GENERAL

PURPOSE

COMMUNICATIONS

MODEL

INSTRUCTIONS

SP-600-JX

RECEIVER

460

West

THE

34th

ISSUE

2 - MARCH

Manufactured

1951

by

HAMMARLUND MFG.

St.

PrintedinU.

New York

S.

1\.

CO.

INC.

1,

New York, U.S.A.

FRONT

SP-600-JX

FIG 1

VIEW

.

INOFC

RECEIVER

ABINET

2

TABLE

OF CONTENTS

Title

T1::chnical

Summary

General Description

II

Circuit Description

II[Installation

IV

Operation and DescriptionofControls

V

Maintenance

VI

Alignment

VII

Conversion

Table

I-Tube

...

....

..

of

Table

Model Receiver for Rack

Socket Voltages.

Table2-Tube Socket Terminal Resistances.

Table

~-RF

and

HF

Oscillator Alignmcm fro:quencics

Table

Table

4-Approx.

5-Parts

List

Signal

lnputsatIF and

ILLUSTRATIONS

.........•.....

Mounting

AF

St;I~CS

.....

.........•...•...............

.•.••.•.•.•••••..•••...•..•.•.

Page

,

5

6

8

9

12

16

10

II

13

II

17

Figure

Figure 2

Figure

Figure

Figure

Figure

FIgure

FIgure

Figure

Figure 10

Figure

FIgure

Figure I:;

Figure

Front ViewofReceiver SP·600·jX, in

Block

Diagram

LocationofTubes

,

Audio

and Overall Fidelity

Selectivity

5

6

Rear VicwofReceiver .

7

Top

ViewofReceiver .

Top

8

9

II

12

14

Vio:wofReceiver-eapaciror
BoHom
BoHom ViewofReceiver-Tuning
Circuit DiagramofReceivcr. .

Connection
ConncctiOn
Connection

ViewofReceiver SP·600-JX

and

Adjustments

Curves

Diagram-Recclver
Diagram-Tuning
Diagram-Frequency

Curves

Chassis.

Unit

Control

cabinet..

.

.

Shield Removed

...

Unit

Shield Removed.

.....

Unit.

3

2

7

I'

14

15

20

21

...

23

24

25

27

29

JI

GENERAL

PURPOSE

COMMUNICATIONS

RECEIVER

MODEL

TECHNICAL SUMMARY

Electrical Characteristics

Frequency

Maximum

Output

Power

Tube Complement - total

Mechanical Specifications

Performance

Range--cotal

Band I

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

Band 2

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

6 bands

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

Band.\....................•..............•....•....•....•....•....•....•.....

Band

-4

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

Band

5...........................

Band 6

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

UndistorlW

Impedance-600

Phone

jack-winding: delivcrs

600

ohm

power lood is adjusted

Supply

Line

Rating

Power

COIl5\lmpuon..................................

Output-approximate-2.5

ohms-balanced split windmgs.

1.5

milliwatts to iln 8000

to

.500

waUS.

milliwalt5.

Requirements

_ _. . . . . . . . . . 95, 105, 117, DO, 190, 210, 234

20

RF, fF

and

BFO

HF,

2nd

Crystal Controlled HF Oscillator
Mi:ters

Detector,

AF

Power
Rectifier ,
Voltage

Rack
surface.

Table

SenSItivity is 2.3
oflOto1.
Image rejection ratios are
The
The

200,000 microvolts.

ConversIOn

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

"C"

Amplifier

Oul

Regulator

Modcl-

Weight66lbs.

Modcl-

IF rejection ratioat600

AVC

A.mplifiers

Bias Rectifier

andIFOutput

put

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

Dimensions:19Ulchcs wide,

DImensIOns:

Data

-

miuO\'olu,orbeuer,

action will maintain

.................•.....

and

BFO O.scillillors ,

(approximate

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

and

Noise Limiter &

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

100

21H

Inches wide. 12.l.j inches

valurs·takt'hona

throughout

better

than80db

kc is

1700to1

the

output

throughout

constant

SP-600-JX

_

.......•.......

. .

ohm

resistivc 10ild,

130 watts. 1.25 ilrnpt. ilt 117 vol1$-mill:irnum.

_ _ .

Meter

Rectifier

..............................•......

Inches high

sample

the

entire

the

within12db

.......•....•............

and

high

and

rect'iver)

frequency
frequency n.nge.

when

when

OInd

....•...••........

160

inches deep from rack

17}i

inches

n.nge.

for

the

1.3.5toi,45
i.45to7.•0 mc

7,40to14.8 mc

\•.80to29.7 mc

29.70to.504.0

the

iludio

260 volt tilpS, 50-60

_

.•......

_ .

,

...•

, .

deep.

Wei~ht

a signal

input

to

nOIse

is increased from 2

.54to54.0 me

.,54

to

1.3.5

mc
mc

me

outputtothe

cyeln.

7-

68A6

.

'-

1-

2 - 68E6

J-

1-

1-6V6CT
1-5R4CY

1-

.

12AU7

mounting

87'~

power

6C.

6AC7

6ALS

OA2

lbs.

ratio

to

4

GENERAL PURPOSE

GENERAL DESCRIPTION

COMMUNICATIONS

RECEIVER

The

SP·600-]Xisa 20 tube Radio Communications

Receiver

with

self contained

power

supply.

The

JX

suffixinthis model number denotes that this receiver

is made

the
tors
values and tolerances
ferred value listsorwhere

permit their use.

equal

steel, tanle model cabinet finished in
plement

in a

opcntion
ing
primaryisprovided with taps covering a line voltage
range

iF

speaker receptionofAM

~raph

over
in
control knob. on
frequency
a small front p.lncl window indicates
hand
indi..:ator with

has
band
scales Over each frequency
r:\tc

sign
ccptional opcrating case. It controls
and
provides extremely close calibration accuracy and com­pletely accurate resctlbility. A
positi\·e locking
setting.

main dialis50 to I and
dial to

to

theRFamplifier.

in

accordance with

exceptionofthe

where

special design considerations require special

useofa few capacitors

The

or

su~riur

The

receiverissuppliedineither

the

standard19inch rclay rack.

The

self contained

from a single phase. 50to60 cycle

current

from 90 to 270 volts.

lighter

power

to

~rcy

source.

JAN

nm

includedinthe

space limitations do

specifications.

and

JAN

special componclHs so used arc

the

JAN

componentsinquality.

a well vcntil:l.tcd

dark

front

panelorfor mounting

power

supplyisdesigned for
The
The

grey to com-

power

power consumption

ahemat-

transformer

no watts.

The

receiverissuitable for

or

AM

MCW

The

standard

a frequency range from 0.54to54.0 megacycles

sill:

bands.

1Il

u~e.

In addition to

an arbitrary

spread dial provides continuous

logging

The

single tUlling controlislarge andofspecial de-

to

permit ma:<immn traverse speed as well as

band

The

tuning

the

An

ingeniously designed rotary turretisemployed

change

modd

The

lar~e

the

band

and a

This

control also aligns

the

pr()pcr dial scale.

the

~::tle

and

resctability.

spread dials.

action

ratio from

maiJl

dialis6 to

bands and to place

Mixer

either

radio telephone,

telegraph signals.

provides continuous coverage

eHily

front p.lncl, selects

band

frcqucnc}'

which in conjunction with

An

without

the

the

ratio from

:lnd First

headphoneorlouo

operated

indicator visible

the

scal..:.s,

band

f{lr

anti-backlash gear train

tuning

affecting

tuning

1.

the

coil assemblies

Heterodyne

CW

band

the

through

the

frequency

dial frequency

the. main dial

band

clI:tremely ::tccu'

both

the

lock provides

the

frequency

control to

the

band

with
resis·

pre-

not

tcle-

change
desired

the

sprcad

e:<-

main

the

spread

Oscil·

lator stages directly adjacent to
tionsofthe
spccti"c tubes.
high signal to noise ratio.

Two
arc provided on all bands.
version,
cludes a mixer, h.:terodync oscillator, fnur stages
IF amplification, detector and
limiter and meier rectifier. beat frequcncy
be;ll frequcn.:y

and

fier
cOllversion. employed for frequencies abo\'!': 7.4 mega·
cycles,
dyne
system includes

,I

voltage regulator_

The
nel crystal controlled operation on any six frequencies
chosen within
comrols permit
ity continuously
selected fixed fretjuency signals. F(lr crystal controlled

fixed channc1l)pcr:Hion
dial to
quency desired

trol. Nl) retuningofthe
desirable,
tion for

not supplied with

chased

MFG.

It

is

til (unction.

The
rdative
microvolt, when
g;lin cOlltrol ;ll maximum. A re,lr .:ontrolisprovided
for adjl.1stmcnt at
RF

signal
panel meter switch
cates
watts. A
the0db

The
constants for
quency oscillator employs a hIgh cap,lClty Colpitts cir­cuit which
and minimizes oscill:llOr harmonics.
quency oscillator
tcctor

of

oscillator lock-in.
tune

four

gang

tuning

This

assures mall:imum sensitivity at

stagesoftuned

uso.:d

011 frequencics

buffer ;lmplifier. IF

output

include,; a second

crystal controlled oscillator.

frequency control unit provides for fixed chan-

the

CO.

two scale

the

through

signals sharplyto:cro

a B powo'r rectifier, C bias rectifier and

the

the

signal frequency, switchtothe

and

when

swit.ching (rom

the

same signal frequency.

on

special

specifying:

strengthofthe

input

of

audio

output

rear controlisprovided for adju.stlOent

reading.

AVC

circuitisprovided

CW

gives a high

radio frequenc}' amplification

powcr

stage.

rangeofthe

sele.:tionofthe

variahle lUningoreitherofthe

itisonly nl:ccssary to set

tunc

with

the

rCCclvl:f,

order

the

tuning

meter

r..:ccived signalindb

operatcd

the

plus 20dbscale reading with an

10 mi.:rovolts.

the

lower scaleofthe

power levelindb

and Mew(lperatioll.

vollageisintroduced into

a buffer amplifier which eliminat.es

This

feature mdkcsitpossible to

their

capacitor

The

circuit for single con-

upto7.4 megacycles, in-

AVC

output,

The

drcuit

m;lI:cr

and a second hetero-

The

ro.:ceivcr.

normal

the

delt,1

main

tuning
VFO

These

but

from

signal frequency for which

on AVC;\110

HAMMARLUND

11I1rm.dly

011

with

ordcroffrcquency stability

beat

and

respective 5ec'

and

their

re'

oscillator,

ampli-

stabil-

six

the

con'

the
from 1
the

RF

beat fre-

beat fre-

lhe

dc-

the

in-

of

or

rectifier, noise

A.F

for double

power supply

Front panel

hig:h

crystal fre-

frequency

is necessary

to crystal opera·

crystals arc

shnuld be pur-

lIlclk,ltes
with

depressionofthe

metcr indi-

from 6 milli'

s.:par:ltc time

The

The

permits

of

5

dusionofthe
lator lIlJecrion
fUnd control varies
to plus

The
ference
type

nOI~.

rear control for ;adjustine

to

suit

opcr.umfZ"

the

or

rnmU5

nni~

limiter circuit effectively hmits

audio

3 KC.

.:onditions. A front

Ix.t

from ic:nition systemsorother

The

hmitcr

SWItch

permits optional usc of

the

beat ascii·

frequency from 0

the

inter·

.soUft:esofpulse

the hmlter.

The

antenna input

a halanccd

100

COnventional

The
load (lr

wllldlrl~

Ime.

ohms.

The

STOgie

audIO

output

Illle

andisprovided with a four terminal spilt

for balanced load oper-ttiOIl.
power outputISapproll:imatcly
phone circuit whell referred
vides

si~nals

the 600 ohm

;"tlcnuated apprOll:imatcly15dl:-

power output.

AnRFf!ain

trolofsensitlvityInthe

cirCUliisduiJ,.:ned for

Thc

mput ImpedanccISnominally

USl:

receiver may alsobeoperated with

wire antcnn,l.

circULt

IS

tle~IJ:JH:d

for a 600 ohm

Undlstoncd

2.5

W;lttl!.

the

(111m

manual

The

load pro-

to;'1I1

ROOO

conlrolisprovided for

prescnceofstrong signals and

wuh

head

helow

COil'

CIRCUIT DESCRIPTION

Gtntral­Figure
more
the

various Circuit sections.
ous tubesisshown in Figure J.
conversion.

consistsoftwo staJtesofRF amplification
First

MotU

stagCllofIF

Detector and
Beat Frequency
amplifier
Y'J?

Power Rectifier Y-19, e Bias Rectifier

age Regulator V-JB.

In the circuit for double convcrsion. used fnr signal
frequencies above
Second Heterodyne Oscillalor Y·S are substituted for
the Gate tube

Input
to provide optimum coupling from
miMion
tenna maybeused.

RF
lurretisemployed to change bands and to place the
COli

as-~mblies

Y·5

and First Heterodyne Oscillator V·4 stages di·
rectly adjacent to their
gang tuning capacitor and their respective tubes. ThiS
assures maximum sensitivity at high signal to noise
ratio.

Firsf Heterodyne

The

rotary turret band change swilch, advanced de·

The

11. A block diagram. Figure 2. is provided to

circuitisshown schem;atie:tlly in

deilfly show [he arranflemen[ and functions

The

locatlonofthe

The

circuit, for single

used for sienal frequencies up[07.4

V·I

van'

me

and Y·2.

Y,S. First Heterodyne Oscillator Y-4. four

amplification

Aye

Oscillator

Y·16·A

and Y-16-B. OutpUt Power st'age

rectifier

Y'?,

Y·9.

Y·H.

Noise Limiter Y·15.

Y-n.

IF output :md

Y·IO and

Y-li,

AF

and the Power Supply system which includes B

Y·20

and

Yoh·

7.4

me. the Second Mixer

Y'6

and

Y-?

Coupling -

Ime. A M.laneed doubletorstraight wire

Amplifiu-An

The

antenna couplingisdesigned

ingeniously designed rotary

of

theRFamplifier

respeetiv~

O.scil1ator_ (Variable

;a

100 ohm trans'

Y·I

and

Y·l,

SC.:tl(1115ofthe

V4)-

an'

Mixer

four

tlper-lles

The

but

Ic,Ixcs

tlon

~twccn

on either

scnd

the

MANUALorAye.

rc':CI\'O::

switch

dl:5Cn~ltl:es

poweronto provide for mstant recep'

transmissIOn pcmx!s.. A re,lr

proVides for the connectiunufan external rela)'

Radiation

ments for .!lhlpboard

is

negligible :lIld complies with

OflCr:lIIOn

and for multi·rccclwr

insullations.

Frequency drift

ranges between

;a

quency depending on
vcry

unusual

tuned

HF

after aISmlllute warm up pcmx).

.001

percent and

the

frequency u$:d.

.01

dCj.!fCeoffrequency stability for \'an,lble

oscillators and

dosd}'

appro.1.chcs crystal

.!ltabllity.

The

selectivity control pro\'ides three degrecs of
crystal and three degreesofnOll'cryst:11
ranging
crystal tiltcr embodies
have provcd so effective
Super

from sh;'trp (.2kc)

Pro

Recei\'.::rs. incorporatedinan improvcd

the

OInd

tl)

S,IIllC

deSIrable

broad (13.KC).

Circuit fealures that

mechanical design.

II

Signofthe four gang, twm section. \'anable tunlllg
capacitor and
Vide

of

frequency stability and dial calibration accuracy

to a previously unattained degree.

First Heterodyne Oscillator - (Crystal Controllrd

V.j)

_ For services requmng extremely stable.
frequency operation. a crystal controlled high fre·
queney
variable to crystal controlled
of

silt

crystal positions.iseffected by a front panel con'
trol. A
of

the

crystal oscillator frequency over a plusOfminus

.005 percent range.

Intermediale Frequency Amplifier - Single cOllver'
sion to 4S5kcis
low

7.4
incorporating
circuit. Six positions

widths
narrower bandwidth positions, th.:

IIpcratlQl\

treme

SCIC':I1\·lty

,tdJ.cent lllierfermg sign:lls.

Double conversion

des

alXl\"c
mebythe
Y'4orY'3 for high Image rejection.
signalisthen
Mixer

Y'6

Oscillator Y·B, for selectivity.

Detector and

high

levcl Detector and

euit

is

provided with separate time constants for

and Mew operation.

rug~ed

construction throughout. pro'

oscillatorisproVided. Instant

oscillator. with a choice

.second front panel control permits adjustment

employed for signal frequencies be'

mc.

There

arc four stages of IF ampltfication

the

Hammarlund patented crystal filter

of

of2•.5,1.3.

scl~etivlty

:..

Sand

prOVIde

13

kc.

cry9.,,1

The

.::rystal

7.4

me.

ph<lsmg

for

tho?

is

employed for signal fre.quen'

The

signalISheterodynedto:;.955

.:ontrol

high :lttenuallooofdC1SClr

First Mixer V·S and Heterodyne Oscllla!Or

heterodyned to 455keby the Second

and the

3.05

me Fixed Crystal Controlled

AVC-The

Aye

Y,14 tubeisused as a

RectIfier.

the

receiver

re.:ept'Il.:le

requir~

pcr..:enr of fre-

ThisISa

.selectivity

The

ill

Hammarlund

fixed

ch"n~eover

from

6 db band·

On

the thre.:

filta

IS

395S

Aye

III

ex

me

cir·

prOVides

The

The

CW

6

Beat Frequency Oscillator -

oscillalor employs

gives

a high orderoffrequency stabIlity and minimiz.es
oscillator harmonics.
Y-I

3. is coupled into the detector circuit through Buf·

a high capacity Colpitts circuit which

The

The

beat frequency

beat frequency Oscillator

fer Amplifier Y-12. which eliminates oscillator lock-in
and permits

meansofa eOlllrol
A

frolll Panel control varies the audio beat frequency,

from

Noise
limits the noisc interference from
Other

vuiationofthe beat oscillator injection by

[l1catedonthe

"era beat to plusorminus 3

Limiter-The

noise limiter circuit Y-15,

rearofthe ch;lssis.

kc.

ignition systems or

sourcesofpulse type noise. A separate control

,,~

Clll'$TAl CONrllOllEO

Power Supply -

part

of

the recei

The

...

power supplyisan imegral

'er. It includes the B recnfit'r

Y'19

and the C rectifier Y-20, together with their respective
low pass filters and the Yoltage Regulator Y·IS.

The
power transformer is provided with screw terminal
primary taps, covering a power line source range of

90

to '270 volts, 50 to 60 cycles.

former

is

protected by a fuse in the primary circuit.

Tuning

MelCr-

The

tuning meterisusedonAYC

operationtoindicate thc accuracyoftuning and

The

power trans-

the
relative strength of received signals. DeprcS5ionofthe
Meter Switch converts the meter
of output level

IF

ill

db from 6 milliwatts.

outpur

circuit for indication

''0

c

REcr

,BLOCK

DIAGRAM'

""

f1G.2

switch S-6, permits optional useofthe limiter on an)'
mode of operation when pulse type
present.

Audio Frequency Amplifier - A resistance coupled
amplifier triode Y·16-B. amplifies thc
signal from

Audio

the detector.

OUfpul-The

audio
transformer coupled through a split. balanccd wind:ng
to

deliver

2.5

load.

The

watts undislOrted output to a 600 ohm

split balanced winding pcrmilS balancing
the direct currelltinthe Output circuit,asused for
teletypeorsimilar service. A separate secondary wllld·

ing provides attenuated audio signal output for head­phone operation.

This

winding
of15milliwatts inro an 8000 ohm resistive load when
the 600 ohm power secondary
watts

to a 600 ohm resistive load.

IF

Outpul-

A cathode follower Y-16·A provides

is

a low impedance source of intermediate frequency

(455 Kc) signaltothe connector on the rear skirt

the chassis.

interference

audio frequency

output

will

tube Y·17.

deliveranoutput

delivering 500 milli·

",

a

5R4GY

is

RECT

II

REG

'"

0"

---

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

Sl9nQI

II'lT~

5'9"'" pot!>

e,,"'"wm

fGI'

• •

frfll~1ICj

RF Gain Control and Power Switch ­gain controlisprovided for manual controlofsensi·
ti\.ity to prevent overloading on strong signals when

opcratin2 with

"MANUAL"

when the switchisin

··ON-OFF"

the

AYC·MANUA.L

position.

the"

This

AVC"

comrol

position.

switchisoperated at the counter-clockwise

extremityofthe RF gain control.

is

Send·Receive S

.....

itch -

The

send-receive switch dc·
scnsitizes the receiver but leaves the power
provide for instant reception between transmission

of

periods. A
receiver for the

rl!ceptacleisprovided on the rearofthe

extental connectionofa relay.

Convenience Outlel - A cOllvenience pOwcr outlet

i1>

providedonthe

tion

of

an :lccessory such as a lamporelectric clock.

rcarofthe chassis for

Radiation - Advanced design and shielding

high frequency, second conversion crystal

frequency oscillators

negligible point so

of

common in multi·receiver installations,

'has reduced radia'tioll to a

that

interferenceofthis nature,

a minimum.

ft>

""

f"Q~ne;n

••

obG';.

7.4""

b.'o...

7.4

The

switchinthe

al.so

operates

The

Power

"on"

the

connec'

of

and beat

is

reduced to

me

RF

to

the

7

INSTALLATION

Tu~s

and

all

tubes

any p;lckingisremoved from

Power

lead on
transformer tap which most nearly agrees with
to 60 cycle power source voltage.

Anlenna-The
terminals
hne.

The

WIth

the

meter,

be

used with a bab.nced

deSiredtooperate

leona

of

the connector plug and a

connected from

Packing-Inspect

are:

firmly in their respective sockets ;md tha.t

Supply-

the

is

designedtomatch

angle plug

receiver, is designed for use with a small dia-

"TWINAX"

lud·in

Make sure

power tri!.l1sforrner is connectedtothe

input

adapter

tr.tnsmission Ime, which should

with

the

a smgle

other

wire should

the

chusis

the

receIver.

that

the

primary tap

impedanceatthe

OJ.

100

ohm

and connector. supplied

antenna

wi~

be.

connectedtoone

ground

terminal of

transmission

Installation.

antenna. the ;m-

lead should

the

to

connector

III

see

that

the

antenna

If

it

tcrminOlI

50

be

plug

to

;l.ntenna

Speaker -

manent magnet dynamic typt: and should include a

speaker voice coil to 600

former for connectiOn to the 600

terminalsofthe receiver.

Headphones
phones maybeused in
pedance typeisrecommended.

CilIOOatthe

is

Mounting-The
or

mountedIna

IS

purchased.Itis
cabinet shouldbeplaced in a position which permlU
the free

IV

OPERATION

the ground terminal. whIchisadjacenttothe

input receptacle :u the

The

loud spea kcr shouldbeof

- Either low

lower left sideofthe front panel.

receivcr maybeplotcedona tahle

~D.ndard

supplied

accessofair for

reuofthe

ohm

linc matching traIl!-

or

the

hi~h

phone jack.

The

19

lOch

nll'k.Ifa table model

WIth

a steel cablllel

the

ventilation louvers.

tumng

the pt:r-

ohm

audio

output

impedance head·

The

phone jack

high

unit.

1m·

IS

The

10-

DESCRIPTION

The

front panel dials

Figure I and

als

are

Tuning
band
frequency band
arbItrary,
bItrary. 0 to 100. scale

p,.,inter
lutions thilt
at any
scale.ofthe main dial indicates
the

bitnd spread dIal indicates 87.6. the reading to

lor

this settingISread. 487.6.

hand spread
dIal

over

band

tlOn

pomts.

slons.onthe

quency

tings. ThIS permits extreme i1ccuracyinthe logging
stations.

Crystal Controlled
on fil(eJ frequency chilnncls the
CONTROL"ISprovided.
plied with the receiver, hut will be supplied on special
order. In
frequency operation crystal units should be ordered
from
order
each unit
has provision for

the

shown10FIgure 6.

spread dialisto

of

setting

spread divisions. with

hand into itpproximately 6000 readilble set-

HAMMARLUND
should specify the signal frequency. for which

rear chassis skirt controls ilnd termin-

Dials -

scales, calibratedinmegat:yclcs

outer

scale.

the main dial indicates the

have been made by

Thus.ifthe

system divides

each frequency

SlOceitis

I»nd

ordertoinsure correct crystal controlled

is

tobeused.

and

controls

The

milin diiil is to

the

right.

The

band spread dial has an ar-

The

numernl under the fixed

pointer, for the

This

the

band

into approximately 600

one

easy to estimate

spread

snle,

HF

Oscilla.tor -

The

MFG.

The

six

crystals. Variable frequency op-

frequency control unit

ue

shown in

the

The

the

over

rotationofthe

half

thLS

crystals are not sup-

CO.

left and

main dial has six

numberofrevo'

band spread dial

the figure 4 and

precise mechanical

division calibra.-

one

tenth

divides each fre-

for

"FREQUENCY

INC.

the

and

outer

main

dIVi-

operntion

and the

an

lol,!

of

OF

CONTROLS

crationorcrystal controlled frequcncy operation on
anyofthe
"CRYSTAL
sIgned for

10

the rnngeofthe
"DELTA
very small plusorminus frequency toleranceofthe

crystals.

The
tion should be as follows: Loosen the knurled
screwontopofthe crystal unit and push the retainer
spring assembly to
stals in
l'Ctainer spring assembly
press
thumb
each crystal
chart provided for this purposc alongSIde
switch.

IfItis
numerals on the chart shouldbeused!Othat

agree with the numerals on the crystal socket positions.

which
main
for which oocration
should be
number

Delta Frequency control should be adjusted for m:txi­mum
nOled
quency control must
nal frequencyischanged
should

six

crystOlI

SWITCH".

uSC!

WIth

FREQ" controlisuSC!d

procedure for crystal frequency control opera-

the

crystal sockets, numbered Ito6.

on

top of

screw. Mark the

was selected. in megacyclesonthe plastic

PenCilormk maybeused and can be ernsed

desired to

are

tuning

for that

si~nal

that

be set to agree with

change

also indicatedbythe crystal switch.

dIal should be set at the signal frequency

set at the pOsition corresponding to the

or

for

this luning adjustmentofthe Delta Fre-

positionsissclected by the

The

crystal

suitOlble

receiver

the

the

si~nal

2.ero

crystals at

Olbo".::

reu.

lnscn

fOl"\ollard

cryst41 holders and tl.ghten the

sign:lll

these figures at any time.

IS

desired.

frequency on the chart.

beat as required.

be made each time

and

that

the

OSCillatorisde-

;)Iny

one

megacycle.

to compcns..lte

the

crystal or cry'

so th;n the sprinc:s

frequency for which

The

crystal switch

It

that

the main tuning dIal

new signal frequency.

frequency

Bring the

the

~hould

The

for a

thumb

crystal

The

they

The

The

the

be

si~

"

Tuning
right of
for the tuning
quency

shlflln~

under:"

Tuning
left
sljtnal
strength
The
chassis proVides adjustmentofthe plus20db
on
pressionofthe

meur

I~vcl

returned to
and should
the
pili,
observe this precaution may re<ult
meter.

Lock -

the

The

tumn~

tumng

knob, ptovidcs a posillVC locking

lock, located to the

me.:hamsm without affecting the fre'

settmg.

whenitIS

of

the

tumO(::orwhen the receiverisoperated

clesLrt~d

tl)

prevent accidental

severe conditionof'I.-ibration.

Meter-

on

the

front

and provides

of

the

"METER

The

pand

rccel'l.'ed

AD)

RF" ,:ontml at

tunmg metcr at

15 useful m

;m

mdic.ition

signalinclb

a..::curau:ly

of

the

tunm~

relativc

from I microvolt.

the

rearofthe

the

upper

readmR

theRfscale, with a10microvolt input signal. Dc,

"METER

SWITCH" co",,'ercs

the

circuit for Illdlcatl0noftheAFoutput power

in

t1b

from 6 mllhwaltS.

theRFscale

110tbedepressed for Ihe

audio output has

bC1'1i

This

cirCUlt

switchisspring

pnsition when released

adjuslcd for

AF

scale ulIlcss

10",

po",cr out-

by meansofhcadphonesorspeaker. Failure

ill

The

"METER

AD)

AF"

dama~e

control at

the

10

rear

the

the chassis proVides adjustmentofthe 0dbreading
theAFscale. which should be made when theAFout·
put

power from the

6 milliwattsor1.9

Band Change -

600

ohm

,lUdio

voll.5

acrOM

Th~

large knob, to the left.isthe

output termllldls IS

:l

600 ohm load

band change 1.'0ntroi. Each revolutionofthiS control
turns

the

turret.

COIl,

tnmmer

and

SWlt.:h

frequency band to the

contilimn,l:l

and

m<lY

ble

turned

11\

tive detent machanism
various bands.
ously

operates

at

the

centerofthe panel and aligns

indIcator with

Selectivity Switch

The:

the

small frequency band dial, located

the

proper scale.

-

theRFandHFoscil1uor

cont<lct

neX[.

either

<lSsures

<tsscmbiic.s,

The

turret has no stops

from one

direction desired. A

correct locationofthe

po.!Ii-

band change control simultane-

the

dial frcquenC)f

The

selectivity switch provides
three crystal and three non-crystal degreesofsclel.'­tlvity. ranging from extremely sharp, for
tlOn.LObroad for good fidelity
control knob

di;ll

indicates the 6 db band width at each

MCW

CW

opc.r,luon.

recep'

The

setting.

Phasing Control -

The

phasing control permits
hlllh attenuationofclosely adjacent channel interfer­ence

on

either sideofthe signal frequency. when

the

crystal selectivity positions are used.

Beat Frequency Oscillator
os..:lll,ltoristurned
tht:

"MOD-CW"

"on"

SWitch.

for

- The:

CW

The

1>£at

si~na.1

frequency

operuinn

heat frequency dial

of

(In

by

l>houldbeset at
adJum:d to
quency
"BFO

pend..ntofother

tl'nua.ung

a

pulse

OSI:llIator

IN)"

No~

.ype

z.ero

for

tunin~

to

-,!,i"e

the

desired audio pitch.

inJection '·olu.gc is

controlonthe

Limiur-The

nolSC

mterference from ignluonorsimilar

noise limiter switch i

controls

a.ndisuseful10e:rca.t1y

l.ero beat and then

;p.dJostablchythe

rt:;1r

skirtofthe

sources. regardlessofthe modeofopera-

tion.

Send-Recdve -

The

send·receive switch permits

descnsitl:ing the receiver during transmission periods.

to prevent damage
proximity

to

to the receiver. when operated in

the lransmitter ;\nd provides instant

turn to reception between transmission periods

Relay

to

rear

of
l>cnd-rcceive
an

the receiver.isconnected in

switch ;\nd provides for the connl;ctiorr of

externally connected relay. to perform

receive

operation.

receive switch is

A VC-Manual Switch -

Receptacle -

pi'rmlts the
Ity

Oper.ttlOIi

chOiceofeither

as desired.

The

When

left in the

relay receptacle.

the relayisused

"open"or"scnd" position.

The

AVC-Manual Switch

AVCorManual sensillv-

The

AVe

which insures maximum sensitivity for weak Signals.

RF Gain
adjustmentofthe
suength.

tion.

Justed

mg_

on

AVe.

to reduce

transmission
Siredtouse
signal

Control-

TheRFgain contrlll

sensitivity for signalsofvarious

when under the

in

ordi:T th.u the receiver scnsitivit)· may be ad-

to

SUit

This

the Signal strength and prevent owrload-

controlISalso in the

III

order

that

undCSll'<Ible

of

the received

the

tunin~

"manua'"

cirCUli

the

senSitivity may be

nOISC

dunng

"off" periods

si~nal.

meter fllr indicationofrc!atn·c

strength. the RF gain control shouldbeat maxI-

mum.

Audio Gain

JUSts

the audiO input to the audio

Control-

The

audio galll control ad-

>tmpldier
should be adjusted for the reqUIred audio
operating
whell operating 011

of
quency source IIlput to the

provided on
mg

on

AVe

andisnest left:nor ncar maximum

MANUAL

Phono Input - Termmals

the

n;cclver for phonographorother

arc provided on the rear

audiO

Convenience OUllet - A

the

an accessory,

rearofthe receiver chassis for operat-

!Uch

as an

pow.::r

dectne

contro!'

frequency a.mplifier.

outlet receptacle

dockorlamp.

The

heat fre-

chassis_

lOde-

at-

re~

on

paralh::l

wHh the

the

scnd·

the

send·

the

has a dcldy bias.

prOVides

opcratlllg condi-

when Opeutllll::

adJu5h:::d

III

WhenitIS

the
dc'

tube.

output

when

audl() f

reo

It

is

MAINTENANCE

This

should normally require

socket voltages and resistances should be measured to
.:hassis.
shown

receiverISdeSigned for continuous duty and

httle attention beyond the
replacement of
velop that

tubes. However, should trouble de-

c-a.nnotbeeliminated with new tubes, the

Any

;\PPTf'l.'iable

departure from the values

in tables 1 and 2 will generally indicate the

9

V

L-omponentorcircuit at fault.

Opcratinf[

~reatly

and maintenanceofthe

facilitatecl if the contenlSofthis instruction

m;\nual are thoroughly dit;ested. Approximate lIlput

signal values

III

table

for

stajZehy!ta.$tc

4.

rccel'l.·er

gain checks arc shown

will

be

TUBE

SOCKET

VOLTAGES-TABLE

1

Volu,gctochusis. Ma.surements

<Istcflo!k

above 10 volts iilld the10volt scale (or voluges below10volts. Lme \'Oltagc 117, no signill

,,:oolrolatminimum and

were milde with Mca.surcrncnu Corp. Model 62

C\V-MOD

TUBE

V·I
V·I

V.,
V·,

V.,
V·,

V.,
V.,
V·.
V·,
V

.•

V·.
V.,

V••
V.,

V·,
V·,

V.,
V.,
V·,
V·,
V.,

V·IO
V·IO

V·II

V·II

v·n
v·n

V·13
V'14

V·iS

V-16
V'16

V-11

V-17
Y·18
Y-19

V-19

V-lO

V-20

I 2

'-I

·-5~

'-I

·-5-1

-

-

-

-

130

-

-

-

-

- -

'-II
'-II
'-II
'-II

0 -

'0

'-I

'-54

'-1

'-54

--II
'-II

-

-

"

-

-

'0
52

-

~

"0

-

-

-

-

-

-

-

-

·6.h.c

t6.hc

t6.h.c

-6.h.c

-

l.l

-

-

-

-

-

-

-

-

-

-

-

-

-

_.

-

- '6.3loC

-

-

-

-

-

-

- 280

-

'00

no

'-96

'-97

,

-6.3ac

·6.3:1.<:-

-6.1;0.,

·6.33C

- -

- - -

-

- - -

-6.);&c

t6.3ac

-6.hc

'6.lac
'6.lac

'6

hc

-6hc

'6

lac
'6hc
'6.3at

'6

lac
'6.3:.c
'6.lae
'6.3:.c
'6.3:.r
'6.3ae

'6.3:.c
'6lar
'6.lae

e6

hc

'6.hc

·6.hc

Il

I'

260 228

-

-

- -

'6.lae

'6.31oc

m.de

with

SWitch

on

"CW"

SOCKET

,

•

'00

-

260

-

- 210

'60

-

- 0

- -

- 130 -

1<0 110

-

ns

-

-

'60

225

-

'60

-

225

-

260

-

215

-

260

-

0

-

'0

-

205

-

260

-

105

-

260

-

210

-

240

-

210
140

-

"

'22

-

- -

-

- -

~

-

-

~

2"

-

"0

- -

-

-

- -

-

-

Westen

PIN

•

'0

III

100

1<0

ISO

0

ISO

-

-

90

10'

170
190

0 -
0

- -

-

'0

235

'0

235

'<5
1<5

.0

<5

-

-

HO
'<0

-

-

-

-

-

-

Model 661 Volt-Ohmmwer. except those indIcated by

VTVM.

NUMBERS

, , ,

-

- - -

- - -

- -

-

-

0

0 280 -

- -

-

'-I

'-I

'-I

'-1

-

- - -

- - -

- -

- -

-

- -

- -

-

-

- -

- -

-

-

-

-

'6

he

'6.3u

-

-

-

'-96

'-97

The

500

..-olt

- -

-

265

-

-

2"

290

-

-

- -

- -

- -

- -

-

-

- - RF

-

-

-

-

-

- RF

- -

-

-

- -

- -

-

-

- RF

-

-

-

'6.3lo(

•••

,

..

'6.3..(

12

-

13

-

-

-

'00

-

~

520

- RFGlom

-

-

-

scale "''as used for all "'oltagcs

MODE OF OPERATION

RF

G:lIn

max.

RFG~m

min.

RFCam

mn.

RF Gain min.

Rt'

G;o.m

max.-VFO

RF

Gam

mn.-Crystal

RF O,lIn

mm._VI'Q

RF

Gam

mm.-Cr~·5tal

RF

Gam

mn.ormm.

RF

Gam

max.ormm.

RF

Gam

mu.-Frc'ls.

RF

Glom

m,n._Frc'l"

RF

G:un

mn.

RF

Gaon mm.
Gam

mu.-Frrq,.

RF

Glom

mon.-frrqs..

RF

Gammu-Frtqf.

RF

Gloon

mm.-Frrq5
FrrquenclCf below
freqUtnen:f

Rf
RF
RI'Cain
RF C;lln max.

RI'
RF C:l1n max

RF

RF

RF
RFCa,n
RF
RF
RF
RF

RF Gain
RF

RFGalll

Glom
Glom
Gain

Cain

Gam
C.un

Gloin
Glom

Cain
Glom
Gam
Gain

Gam

lobovt 7.-4mt
mu.
mm.
mon.
min.

min.

nun,-BfO
mu."rnun
max.ormm.

lOU.

mu.
min.
mu
mm.
ronormin.
mu-'S
mm.-'S

mn.
min.

mpu!.

Audlu

operatlon

fretl.

operation

Frcq. ContrQ[

bc-Iow

1.4mc

b<low 7 4mc

FrclI,.loixwc 7.4mc

Frrq$.lobovr 7.-4mc

brlow 1 4mc

b<low 1 4mc

abovc 7..4mc

...

bolle 7.4mc

7.4mc

nro h1ltetion max

Inll:CllOn max.

or

m,n.

YI(Pon

2 toPmII

V

loe

Pin

2[0Pm

G:am

Control

8

10

TUBE

SOCKET

TERMINAL

RESIST

ANCE-

TABLE

2

Resistancetochassis. MC,l.Surcmcnts

Tub.:. removed from socket under Illcasurcm..:m.

mum.

Pin No.

Limiter

Socket

Tub.::

Socket

V.,

V·l

V·3

V·,
V·,

V·5

V·,
V.,
V.,

V·,

S\\!ltch

1.8M

L.8M

0

Inr.

'8K I"f.

47K

150 0

nK

nK

IISK

IISK

"OfF".

0 0

0

Inf.

0 0

0 0

0 0

0

CW·MOD

0

0

47K

0

0 luI.

0

made

Switch on

-18K

<8K

0

In£'

<8K

46K

-16K

<OK

46K

wIth

WestOll

Audio

"CW",

,

SOK

80K

<16K

47K

<1K

51K

Info

70K

In!'

80K

Modd

663

Volt-Ohmmeter,

Gain Control ,n maximum, RF Gain Control at

,

0

0

0

0

SOOK

,OOK

LOOK

0

0

AVe·MAN

8

'oK

SWitch all

,

Crystal

Cr}'sl;Il frc",.

vre

!'rel.!.

I'rcq.

Preq.

F.eq.

..

AVe",

MODEOFOPERATION

Frc,,!_

,<mtrol

pu~.

control

pus.

Operatlon

Band~

below

7 -Ime

Bands

above

7.4me

Bands

above

7Ame

Bands

below 7.4mc

mini"

,-,
,-,

V·,

V·1f 0

V.,

V·lO

V·ll

V-12

V·l:;

V·H

V·15

V-Ill

V.l7

V·18

V-19

V·1O

UM

l.3M

12SK

0

0

770K

\I-IK InL

150K 500K

0 0

118K

46K

SDK

6~K

0 0

0 0

0 0

0 0

'K

46K 46K

0

Inf.

52K

52K

48K

48K

22K

22K 0

80K

80K

SOK

145K

lOOK

0

InC

220K

470K

0

150K

1'J5K

0

0 16K 0 220K

0 Inf.

0 0 46K

470K

78K

" "

SOl(

0

0

0

0

0

0

•

0

0

65K

680

360

"K

frcQ.

Bands

Frel.l.

Bands above 7.4me

"0toIK

(BI'O

below 1.4me

InJcctlon

c<.>l1trvl1

The

alignmentofa mndcrn communications

ceiver requires precision

kr)O\Vletl~c

mg

uf

the

.1

douhle super-hcterooyne.

circuits involved.

dureiseven more involved

UIH.kr normal service

ment

for

extremely

the

long

ALIGNMENT

instruments

thanisusual.

receiver will stay in

periodsoftime. Cf'lIlscqucntly

ilnd a

This

the

receiver, be-

<llignmcl'lt procc'

thorough

aliJ!I1'

VI

re'

realiJ!nmcrH

possible causesofa particular trouble h.\\'c been elim-

inated
menl

...

hould be cl\crciscd

required readjustment should not entail

slight

should

notbeattempted

WhenIthas

hCt:11

should be ,ltu:mptcd,

in

makin~

angu[M

motion

of

lh..:

ddcrmincd

:1

g:rcat dc:d (If

the

aJjusting

adjustments. as an)'

unless all

that

any

mOre

screw.

other

rc,d(l!n­caution

than

a

ALIGNMENT OF

The

low frequency IF should be aligned first,

recommended method for aligning

IF

involves

erator

not avaIlable at

the

use

and

;U\

of11sweep frequency

oscilloscope. Since thcSi:

the

average service station

the

low frequency

instruments

nate method using all amplitude modulated signal g.m-
a:\.lor and
The

dlignmcllt

Th..:

of

the
proximately
be requiredtomake
.Ihle. Such an
Manufacturing

nected across

the

IIOWbeSd

Selectivity
Send

CW~MoJ

Phasing

AVC~Man

AudIO

RF

Hand
Dial

The

cent

3kcDosition :lnd advance
maxim'um.
kc

and adjus.t Its

on

the

of

1.4

[, L:i9,

ducing

;In

output

meter will be described first.

additional information required for

nlcthod

will

be

si~nal

gencr.llor should

mixer

tube

V5

.01

mfd. A miniature

adapter

Co.

the

output

speakl?r voice coil.

cov..:recl

thmugh

the

mixer grid connection avail·

is.mlll1\lfactured b}'

An

output

terminalsofthe

The

in

a later paragraph.

b..:

coupled to the grid

a capacitance

tube

adapter

meter should be con-

receiver controls should

as follows:

COlilrol

Posilion

Sec text

~

Recci\''':

Reccke

Mod

Arrow

Cain

Gain

Switch

signal

at

generator

400 cycles.

Sct

the

Output meier. Refertofigure?> for

the various alignment adjustments. Adjust L42.

L?>8.

the

L?>6

signal

Man
Set for approx. 20 volts

text

Sec

1.35 - 3.45 me

2.5 me

should be modulated

Turn

the

selectivity switch to

the

RF

Cain

signal generator frequencyto455

output

until some deflectionisnot;.:d

and L32 for maximum

generator

output

and the RF Gain

contwlasrequiredtoprevent overloadorexcessive

output.

est position,.2kc. and adjust
quency for

Now

lurn

the

maximum nutpuL

the

selectivity

SWitchtothe

the

sign,ll

This

KencTrI!Or

establishes

The

si~nal

gen-

are

the

alter-

the

visual

of

ap'

will

the

Akkn

receiver

:iO

per-

control tll

the

location

output.

narrow'

the

frc-

or

rc'

the

THE

correct signal frequency

IF amplifier and

should not be disturhed for

IF

STAGES

the

by

frequcncyofthe

the

455kccrystal for

signal

the

rcm.tinUo:tofthe

~":llerator

frequencyIFalignment, unlessitshould betorecheck
this establishmentofcrystal frequency to make sure

the

th,lt
dllnng

signal generlltor frequcn..:y h,ls not

the

alignment.

The

sekl:tivity switchisnnw

lurnedtothe?> kc position and L42, L41,
L?>6

and

L:.2

:Ire

;Ig-al1l

Now

turn

the

selectivity switchtoth..:

the

with

U7

sct-up

the

CW-Mod

the

BFa

LH

should be adjusted for

and :ldjust

ing this
mg
beat

necessary
check and adjustmentofthe
the

signal

generator

The

procedure for

low

frequencyIFshould be

..:ept

thJt

the

adjustments

:Imphlud..: and

The

oscilloscope vcrtic,d

across

coincidenceofthe

the

dIOde

junctionofR64

The

high frequencyIFshould be aligned next. Set

band

the

I.:::CtJvit},

switl:h[0th..:

switch

Ihe si!!nal generator frequency

Ul,

U:'

;1l1dU4ffIT

The?>..i

mc

oscillator circuitisheld to:\wry

erance :lIld may be used

multiplc-sof:1.5mefrom 10.5
todothis.in\,iewofthe
r,ldia.tioll

from this os.6I1ator, it will be necessary

adJustct.l for maximum Output.

for maximum output. llcJor..: ch:lng'

BFO

shouldbeturned

switchtoCW

knob dial at its

and checked for zero

:i:ero

:i:ero

BFa

should be

carrier unmodulatcd.

the

visual methodofaligning

the

SJme ,u;

arc

made for

oscilloscope images.

input

detector

<tnd

R65

should

7.4~

beinthe:'

maximum

I:rystal used

should be I:onllcctcd

load resistance, from

to

ch~lssis.

1~.8

mc

kc position. Adju.st

to

;'.955

output.

III

thlt

s<;:cond

dose

<I.!'

a frcqucney s[;:Uldard

Ttl..:

upwards.

.::umplete shlc1t.ling ag<tinst

Jnftcd

U9.

I.:' kc pos:tit1n

on by

throw·

readmg.

ompul.

done

the

above

hoth

m;u;imum

b<tnd.

The

mc

ami adjust

':(lllv..rSIIHl

frt.:qucilcy tol-

III

t..:.mpor:trily connect a two foot lengthofInsul;Hed

to

the

wire

of

chis le:td

CJscill,lwr tube

antenna terminal and dress

around

V8.

he rcmov..:d exr..:pt

the

tulle shield

This

t..:St

\vhd~'

kad

in

us,'

the

fre..:

Oil

th..:.~..sm\'

should,of..:our:...:.

,IS

a fn:yu'·l1q·

.;t.lndard.

the

low

US.

If

This
WIth

the

ex-

the

sc'

at

orda

!(\

end

ALIGNMENT OF

THE

RF

AMPLIFIER &

HF

OSCILLATOR

To

;uJcquately align the RF Amplifier andHFOs-

cIllator an accur.ttdy calibrated slj.:nal

an

output

meter

arc

quired arc shownintable

required.

:'t.

The

Justmentsisshowil in Figure).The

generator

The

frequencies

location 1)(

useofTable
and Figure:; should be made in following this
the alignment which
ircquenc)'
followed for

To

is

band.

align

coupled to

the

the

100 ohm carbon resistor.

modulated

:;0

meter cnnnected across

The

nX:l.'i\'cr controls should be set as follows;

Control

Selectivity

S~nd·Reccive

CW-Mod
AVC-Man
Audio Gain

RF Gain

Band Switch

Limiter

will

llOW

The

s.1mc procedure should then

other

frequency bands.

.54-1.35 me

the

antenna input terminal through a

percentat400 cycles

the

be described for une

band

the

sign.d

The

gcncr;llor should be

receiver

and

Output

PositiOn

:;kc

Recei\,c.

Mod

Sec

Text
Set (or appro:.:.
Sec text
set for band tobealigned

off

the

20

TABLE

RF

AND

HF

!'REQ.

IN

Me

OSCILLATOR

BAND

H-l.3~

ALIGNMENT

t.H-3.4S

lind

n:-

the

ad-

~

put

uf

be

generator

outp\ll

terminals.

volts

FREQUENC.IES

Set the re..:.:iva

The

RF Gam control should be set at

Ih;:

AVe

- Man

adjustmcm showninFigure

maximum

output.

I. adjustments should

receiver
me

and

and the C adjustments,

be adjusted for maximum

and

signal generator dIals to .56

maxmmrl"\

.o;wHch

sct

Oll

Ave.

Then

:;,

the

Ant., 1st RF and 2nd RF

he

.set

for maximum output.

should

The

now

signal genc.r'ltor dIals are now set

~hown

in Figure 3, should

output

in the same

beginning with the Os.: C adjustment and then m,lk·

ing:

the

RF.

This

til

proccdur\: shouldbe..:arcfully rcpe'ltcd

110

inerc,,-sc in output can be r.::all:cd.

Man switch should thenbeset

C adjustments for the

Am,

II)

Man and

1st

RF and 2nd

The

I-:enerator shouldheset for ,ipproximatc1y

\'oIts.

The

Land

C adjustments should now

checked for maximum OutpUl, adjusting the RF Gain
control as found necessary to m,lintaill the output at

;lpproximatc1y

Following the

the rcmainlllg banus using

20

vOllS.

frcqUl::ncit:s,

showninTable 3, align

the same procedure

above.

No. 3

AND

3.45-7.4

ADJUSTMENT

7.4-14.8

DESIGNATIONS

\4.8-297

29.7-54.0

HF

Os,:.

t-l:

set for

ttl
orJer,

AVe

the

sic-nal

:;

n~icro

m.::.

and

L

Th~

I.:'

un'

be

.t$

HI'

Rf
:\DJUST

RF

ADJUSTCAT

Output

30

percent at 400 cycles. Signals :lpphcd to tube ltrids through,I.01

AVC-MAN

OSC

"

L

."T.

Ei

HI'

OSC

APPROXIMATE

.56

J.j

SIGNAL

measured across a 600 ohm resistive load at

BAND

Aoy

U5-).4~

1.35

1.3.•-345

1.35-3

l,l~-345

7.40~

7.40-14.1I

.o;wit.::hOnMAN.

SWITCH

Any

me

3.45

no.:
Ill('

4~

nit""

In,'

14

8

In".

me

CW-MOD

FREQUENCY

AudIO

400

i\udlO

400 eyell's

Mod

RF

l'o.·lod

R!'

ModRf455

Mod

RF

Mud

ItF

Mod

R!'

Mod

:~I'

AT

3.75

7.1S

No.4

IF &

I.'

~.4

TABLE

INPUT

output

switch on

cyel.:s

4H

kc

455 ke Pinl.VIO

ke

455

k.-

45~

k

..

~_955

me

l.9~S

me

MOD,

15.0 30.0

29.U 52.0

RF signals modulated

AF

STAGES

terminals of

7.'

14.5

FOR20VOLTS

rccciva.

mfd capacitor. Selccllvity switch ;n 3

RF Galli ;Ind Audio Gain at maximum.

INPUT

1'",5,V17
Pin

2,

l)in I,

Pmt.V?
Pm

I, V7
Pm7.V5
P'"

7. V5

Pin7,V6

TO

VI6B

VI

t

APPROX.

U

.,

.35volt<

ClOOO

110 nllcnwolts

40

2501llICrtwolts

OUTPUT

,"olts

,"olt•

'meru\'olt.,

40

lI"n"volts

Oller' "'olts

65

Il"novolu

kc

INPUT

13

§

8

8

80@

1/

'\

T8

8 e

L42

L41

OT50

e

L38 L39

OT40

e

L37 L36

OT30

e

OND

e

L34

L33

OT20

i------

,

,

lee!

L..:

________

6

--,

,

,

J

0

TOP

SHOWING ALIGNMENT ADJUSTMENTS

VIEW

OF

FIG.3

~c

GC

e~

@~

8?

CHASSIS

0

ANT

0

L

0

'RF

0

0

2RF

0

0

HF

1"'-

--."

0

L32

0

Tl

0

L3\

0

e 0

/0

~

V3

0

000000

000000

000

0 0 0

I 2:54 5 6

L44

rn

<Xi

o

z

z

o 5

~

::>

i1i

....

\i

....

::>

a.

....

::>

o

'AUDIO

CURVE

CURVE - Overall

5

AND

OVERALL FIDELITY CURVES'

- Audio frequency amplifier.

Gain

fidelity

set

Selectivity

RF
Output measured across 0

Audio goin controlatmaximum

at

2.5

switchin13kcposition.

for20volts outputat400

me.

Inputtophono 'terminals.

Modulation

600

ohm

for

30

percent.

cycles.

resistive lood.

bath curves.

,-

o

-

~

,

~

0

\

5

2

0

5

100

CYCLES

FIG.4

PER

1000

SECOND

\

10,000

• SELECTIVITY CURVES

Overall

at

2 Megacycles.

>-

:::>

"-

z

w

u

Z
<I
Z

0

(fl

W

0::

(fl

W

:;;

>-

100

10

1a

NUMBERS

1,2

1

0

2 3

DENOTE

AND3NON

456

SELECTIVITY SWITCH POSITIONS

CRYSTAL - 415

AND6CRYSTAL

654

3 2

1

1\

0

i

,

15

10

"'

....

~

505

KC

OFF RESONANCE

FIG.5

/5

l.o::'

I

I

I

!.I

10

15

VII

CONVERSION OF

MODEL

Tho.:

SI'·60() RCCC1\"er15UC$l'i!I1Cd

cahinetorrack mounting. \Vhcll table
ordered. Ihe receiverisnot supplied with a bottom

.:o\'cr plate SIlH:C

rack moods arc ord..red

a bottom cover

cover

pl.IlC

met

1}'Po.:

A

cover

conversion to

been ordered and where the covers arc desired.

The

following instructions should be followed

lllslallin~

p1:llc.

rcmO\'e

by

rcmovlIlg

of

the

large side mounting brackcts ;lnd

tWo

nut

the

pl.llC.

.;llllCeInmilst

pl,tlC

kitISpro\'ldcd,

r,lck

the

-co\'er kit:

the

the

plate

buckets

cabinet SCfV':.s this

butisnot supplied

mountinj!

twO

rear corner nut plate brackets

Ihr.:c. screws at

with

RECEIVER

the

rC';":lvcr

elSC!

the

Oil

where

To

install

the

Ihe

two

for

either

modds

purpOSl:.

IS

suppl~cd

WIth

r:u:k

is

of

the

SoCpdr,lt..:

table

the

order, for

models have

bottom co\'cr

lower rear ends

r~place

slIghtly

t<lbl..:

arc

Wh.:n

WIth

:1

top

cab-

when

these

shaner

TABLE

FOR

RACK

oues from

nut

and
tom
bottomofI:has,sls

bracket, from Ihe kil,
whkh
t;tppcd (smaller
The

10-32

that
cabinet.

the cover

chassis

plate, to slightly compress the

the

place With the four 6-:;2 scr.:ws from

theminthe tilpp.:J holes
clearance

lock

ec.Ig,;ofthe chassis. holdmg C,lpaCltur

the

bottom

screws from the kit ,lnd the two 10,32 screws

previollsly held the hottom of the receiver10the

To

anJ

rearofthe

MOUNTING

the

kIt,

USll1~

....

asher from

pholllgraph) Install Ihe

nUl

and

washer

end)ofthe

CU\'U

plateisnow l1lstatled

install the top cover plate assembly, pldee

WIth

the

dn~1cs

with pressure

front

holes

III

the sldc

the $,\m,' 'erews. Remove

the

!crcw, near.:st

U~l1lg

the

...

1m,;

wer..:

rel1l()vec.I,

bracket replal:lI1g Ihl: nut

faclllg:

dl)Wnward tow:trd

appheJ

P,Ut.::!.

lI\

mountll1~

at the rearofthe

rubber

s.::curc.

the

the brackets

the

hrack':IS

the

CIS

short

s..:rew

with

US1l1~

chaonel against

assembly in

kit, eng<tging

through

the

bot-

I

(~"

an!.:!e

from

th.::

the

fiv.-:

the

the

'6

TABLE No. 5

PARTS LIST

Symbol

Designations

CIA.

B,C.

E,F,G.H

C3.$.19.20.
21,22.23.24.

21,29,40.41.

42,43.44,

49,61.

68.10.71.

73.74.
105,115.116.

121. 122,127.

135.153.154,

IS'

C6.

30. 50

C8. 32. 52.
C9.

33,
Cll.17,35.55
C12,138.145

CI<

C15,1J9
CI8.25.45.75.

110. 1I2.
C37.57.67
C39, 59.

C60.88

C62
C63

C"

C69.107.117.

12'

cn

C78

I

C19.80

C82
C83

C"
C87
C89

C91
C92
C93

C"
COO

C97

e98,

102. 103.

104.

106,
109,118.123,
136,146,

148,1.56,157

CIlI

CII4
C1I9,125

C120, 126
C128.

1.51,

159.160

CI29A.I298.

152A,1528

CI30

C131,13]
CI3l
CI40
C141,142

CI43.147.149
CI44

CI50
CI61A,

£1

D. CapOICilor,

'!1.

64. 66.

72.

100.

132

53

113

99.134

108,

ISS.

I

B, C

DESCRIPTION

8

Capacitor,

Capacilor,

Capacitor.
Capacitor,33mmf
Capacitor,
Capacitor,7mmf
Capacitor.
Capacitor,15mmf

Capacitor.

Capacitor.85mmf
Capacitor.51mmf
Capacitor.12mmf
Capacitor,
Capacitor.39mmf
Capacitor,

Cap.acitor.22O

Capacitor.

Capacitor.

Capacitor•.5

Capacitor.

Capacitor.10mmf

Capacitor.
Capacitor.
Capacnor.

Capacitor,92mmf.

Capacitor,51mm£..

Capacitor,

Capacitor.42mmf

Capacitor.

Capacitor,65mmf
Ca,Iacilor..022

Capacitor.

Capacitor.

Capacitor.

Capacitor.
Capacitor.10mfd,

HS

Capacitor.

HS
Caj».citor.27mmf_
Capacitor.
Capacitor•.2.5
CapaC:l0r.
Capacitor,
Capacilor.
Capacitor,
Capacitor.

8OOV.

Capacitor.

4S0V.

trolytic

2

Screw

Input

variable.

sections

.01

mfd 23012_.

20 rnmf.

2400

mmf.

1500

mmf.

1000

mmf.

100

mmf.

2200

mmf.

variable

mmf..

3300

mmf

404

mmf

mmf

810

mmf

1200

mmf..

120

mmL

190

mmf.

379

mmf

610 rnmF

mid

variable

270

mmi.

300

mmf...::

1300

Can,

Electrolytic

2

.0'

•

Can.

Paper

430

rnmf_..

mfd

100J

mmf

100

mmf

5100

mmf

.05

mfd

2500

mmf

..

3

•

HS

Can.

Te~~j~~i:

.........

....

......

.

....

...

..

...

..

..

....

:

~

....

....

...

..

..

..
..

..

..

..

...

..

...

..

"

..

mmf

.

IOOV

mid

..

200V

..

..

..

mid

20

Elec-

Ph~~o

......

Hammarlund

Part

No.

34001-0.

23003-41(,;

23011-40C
23003·45C
2301l·62C

23061.168F
23011·58C

23061.155J
23003·94C

2301\·59
23003·87C
23023·65UJ
23011·17C

23003.47C
11726·GI09

23003·102C
23011-69C

23071_67
23023·8UJ

23072·53
230J3·28
2301I·6OC
23071·50
23071·64
23011·71
23023-45UJ
23071·63
23071_69

23072.52
23071-.58

23013-1

11776·GI

23003.I04C
23003-105C

23011-61C 27, L8,
15462·1

15-'161·1
23023·71UJ
23003·109C
23911·:i9E
23015·21A
23024-24SL

2301.5-16A
23911-77E

23070-40

15463-1
4904·5

Symbol

Designations

£2 4

£7

ES.8
E9,

10.

II,

12

E13.14
E15,16

£17
£18

FI

F2

11.2.3.4

JI
J2
J3

J4.5

LI

L2

L3

L'

U

L'

L7, 14.

24,

35

La

L'

1I0

LII

L12

DESCRIPTION

Screw

Output

2

SoJdn

I

Soldcr

(left)

I

Solder'

(riiht)

6

Solder

8

Solder

15

Solder

3

Solder

(meter)

Fuse,

"'usc,
Fuse

Fuse

Holder,

Uial

Lamp.

Muda

Dial

l.amp

Assembly
AIlIenna
IF

Output
Phone
PowerorRday

receptade

RF

Input
dudes
Switch

SIA

RF

Input
dudes
Switch

SIA

RF

Inp~;

dudcs
Switch

SIA

RF

Input

dudes

'0'

fo,

RF

Input

dudes

'0'

for

RF

Illput

dudes

'0'

for

RF

Choke:'

henries

RF

Transformer

sembly.

contacts

RF

Translormer

bly.

L9.RSandS.....

tacts

RF

Translonner

bly.

32.

contacts

RF

Tran.sformer

bly,

".

Switch

SIB ..

Tr'a'n"s1o'r~~~

RF

bly.

L12

tacts

Terminal.

_

Term.

term.

term.·~tr:p

term.

term.

term.

term.

3 Am'p

!I.i

AmI) Pit/:tail

Holder

...

Spare

No.

Audio

strip

Slr:p

strip

strip

strip

strip

.......

..

-'17

..

..

..

...

..

S~Ck;t

Input

Socket.

Socket..

Jack

..

asse~bly.

C2. 3. L I

contacts

~s~~~biy:

C,.

contaca

a~~~;"biy:

C6,7.S.L3and

contacts

a~~e~bly.

C9,

Switch

SIA

a~~~~bi;:

C12.

Switch

SIA

assembly,

C15.

Switch

SlA

..

includes

R7

for

includes

forSI8

includes

LIO

'0'

for

includes

LII.

contacts

includes

Switch

'0'

for

SIB

,.

10.

13.

16.

i92

......

and

SI8

C2a. 29.

itch

C30. 31.

SIB

C33, 34.

RIO

C36,

...

..

in:

and

fo,

in-

L2

,,'

'0'

·i~.

fo'

i~:

L,

II

.

contacts

'i~:

1<

. U

COntaCIS

...

in.

t7.

L'

contacts

micro-

.

...

assem-

C26,

Switch

...•..

assem·

con-

....

_.

assem­Switch

..•..

assem-

'0'

fo'

.

assm-

37.

con·

....

..

..

Hammarlund

Part

No.

31141_1

16650-12

16650-9
16650-11

16650·\0

JII6J·Ol

31162·Gl

31454-01

15928-8

158119.1
15923-1
15923·-'1

16004·1
31453-1

15959·1

16111-1

5066-1
35013-1

31387-GI

31

39O·G I

31393·GI

31396·GI

31399-GI

31405·GI
15612·GI

31386-GI

31389·GI

31392·GI

31395·GI

31398·GI

17

PARTS

LIST

(Continued)

Symbol

DesIgnations

L13

L15

L16

L11

LI8

L19

L20

L2I

L22
L23

L25

L20

L27

L2S

L29

L30

L<7

L48

L49.

SO

LSI

L52

L53

MI

PI

P2
P3

P,

DESCRIPTION

RF

Transformer

bly,

includes

til

and

tacts

for

Same

as

C46. 47.

Switch
SIC

.. ........

Same:

35

C48, 49. 1.16. RIB

Switch

SIC

Same

as

C~O.

51. 52, 1.17,

and

Switch

for

SIC

Same:

as

C53, 54, 55,

and

Switch

for

SiC

as

Same:

C56. 57.

Switch

SIC

Same:

as

e58.

Switch

SIC

RF

Choke,

RF

Choke.10millihen.

ries

RF

Choke,25millihen-

ries

HI"

Ost,

cludes

L25

and

tacts

for

HF

Osc,
c1udes C81, 82,
and

Switch

for

SID..,.., .

HI"

Osc.
dudes

L27

and

tacts

for

HI"

Osc.

c1udes C8!i. 87, 88. 89,
L28

and

tacts

for

HI"

Osc,

cludes

L29

and

t3ctS

HI"

Osc.
dudes
and

Switch

for

SID

RF

Choke.

ries.

RF

Choke.2ohmsdc..

RF

Choke,

1st

Filter

170

ohms

2nd

Filter

440

ohms

I I"

Output

Tunin~

Power

plug
Antenna
Antenna

nector

Cable

Connector

(for

J2)

C38. 39,

Switch

SIB

L8.

includes

LIS.

R17

contacts

L9.

includes

contacts

L10,

includes

contacts

1.11,

includes

LI8,

contac~s

L12.

includes

L19

contacts

1.13,

includes

59, L20

conlatls

1

~fliil';~~;~

"..,.

assembly,

Ci6,

71, 78,

Switch

SID

.....

assembly,

contactS

assembly,

C83, 84. 85.

Switch

SID

...

assembly,

Switch

SID

...,...

assembly

C90, 91. 92. 93.

Switch

for

SID

assembly.

C94. 95. 96.

contacts

3,8

millihen-

.. .,

...

2.7

ohms

Choke

8.5 H

dc

Choke20Hy,

de

Transrormer

Meter

and

cord

Input

Plug

Adapter

assem-

con·

and

for

and

for

""

Rig

R20

and

lor

and

for

con·

"

L26

con-

con-

con-

in-

L30.

de.

.,

...

Con·

Plug

..

..

in-

in.

in-

in·

in-

.

y,

31404-·GI

31386-GI

31389-GI

31392·GI

31395-GI

.

31398·GI

31404·GI

.

15611-1

31030-2
31031_2

Hammarlund

Part

No.

15617·GI
15618·1
15619-1

31385·GI

31388-GI

31391-GI

31394_GI

31397-GI

31403-GI

1~16-GI

15613-1

31488-1
4903-2

6143_1

16016-1
15987-1
16071_1

Symbol

Dc:siRnalions

Rl.

13.26

R2. 12. 44. 52.

57.82.90.91.

92.70
R3. 14. 39, 48.

53

R4, 6.

16.29,

30.83.102.
R5.15.32
103

10110
R7.8.17.18
R9.19
RIO.

11.20.21.
R22, 23. 64. 65,
R24,25

"

R27

R28

R31.

37,41.

54.58.80

R33

R34. 35. 38. 43,

51.56,62,67.

68.75.76,81.

100

R36.96

R40

R42,

50.

55

R<S

R46.94
R47.66

R59

R60.61
R63

R69.74

R72

R73

Ri8.98

R19

R84

Ras

R86, 89, 95
R87,88

R93

DESCRIPTION

Rui9tor

watt

Resistor

wall

Resistor

watt

Resistor

watt

Resistor

watt

Resistor

wall

Resistor

watt

Res:stor

watt

ReSistor

watt

Resistor

walt

Resistor

watt

Resistor

watt.,

ResiStor

49.
watt..

Resisor

watt.,.,...

Resistor

watt.,

Resistor

watt..

Resinor

wall

Resistor

watt

Resistor.

watt

Resistor,

watt

l<esistor

watt

Resistor

watt..

ResistorImegohm

watt

Resistor

watt.....

Resistor

ohms.

Resis:or

watt

Resistor

watt...

Resistor

watt

Res:stor

watt

Resistor

ohms

Resistor

watts

Resistor

watt

Resistor

watt

Resistor

ohms

SIO

510K

.,

10K

33K

....

1000

510

51

..

24

..

47K

180
150

6800

. ,

2200

1500

lOOK

..

22K

20K

....

240

1100

18K

2200

27K

20K

470K

.....

680

..

variable

.,

2500

82K

120K

includes

..

ohms

ohms

ohms

,.

ohms

ohms

ohms
"hms

22

ohms

ohms

ohms

ohms

ohms

....

. ....

ohms

ohms

ohms

10

ohms

ohms

..

ohms

.,

...."....

variable

ohms

..

56K

ohms

.

ohms

variable

..

ohms

ohms

ohm;'

ohms

ohms

ohms

ohms

ohm

ohms

.

switch

l-S

Y2

~

',;

I/z

.

...

1000

SOOK

SOK

Hammarlund

19317-7681"
19309-27881"

19309-2828
19309_4981"

19309_17081"

\Ii

19309.19381"
19309-18981"

19309-981"

\Ii

19309-898

Y;

19309-3181"

Yi

19309-25981"

Yi

19309-6981"

..

\Ii

19309-5781"

Vi

19309-5381"

Yo

19309-97BF

Yi

19309·1788F

I

19310·179BF

\Ii

19309·IBP

Yi

19309-201BF

Yi

V.

19309-208BF
19309·79BF'

I

19310-5781"

'h

19309_12181"

I/z

19309.83BF
15363-1

Vz

19309·21881"

I

19310.186BF

Vz

19309-113BF

Vz

19309-45BF

.

15342-11

10

19396-1

Y2

19309_287BF

Vz

19309-18181"

15342-21

Part

No.

I"

I~

"

PARTS

LIST (Continued)

Symbol

DC~lgnations

R97

R99

RIOt

SIA.B,C. 0
S2

S3

S'

SSA.

D.C

56.9

S1

S8

SIO

SII

TI

T2

T3

T.

TS

T1

T8

Xl,2,6.7.8.9.

10,

II,

12. 13.

14,15.18.20

Xl17.19

Resistor

Resistor
Resistor

Swill;:".

Crystal
Crystal

Switch,

Selectivity

Toggle
Toggle

To~"lc

SWlIch

Switch,

Mixer

IF

Crystal

IF

Same

Transformer,
Transformer.

Tube

Tube

DESCRIPTION

3.3

Yo:

waH

ohms

assembly

switching
lion

of

R93

return.....

bly.

70. L31. 32. R31

Transformer

bly.

99. L33. 34. R35 .
includes

112. 113,
R41, Y8

Transformer,

CI17,

L38, 39. 40.

C123. 124. 125, 126.

L41.

Beat

assy..includes

13!. 132, 133. 134,

46, R76,

'IS.
Output

soc:ket,

socket,

megohms

360

ohmsIwatt

variable

.

base

and

selector

switch

conversion

switch,

Switch

SPST

Swhch

DPST

Switch

DPDT

"ON-OFF"

..

DPDT,

plate
includes

includes

as

42, 43, R54
Frequency

. .

coil

C67. 69.

C97, 98,

Filter

assembly,

CI07,

110,111.

II~.

U6.

.,.

includes

118. 119. 120,
R49,

T4,

includes

77"
Audio

Power
mmiature.

octal

spring

switch.

3 sec-

,_

.
spring

assem-

...

assem·

..

25K

.

..
..

pan

.....

37.

.

..

...

."

Osc:.

C130,

L44,

Hammarlund

19309-133BF

.

19310·211BF

15342·4
31234·GI

15879·1
31469-1

15852·1

.

15856-1

.

15864-1
15866-1
15867·1

..

15880-1

3118l-GI

l1116-GI

l1114·GI

lll02·GI

,

l1102-GI

l1106-GI

31086-2

31029-2

15989.4

16082-1

Part

No.

Symbol

Designations

X4

XS

XI8

X21

YI.2.J,4,5.6

VI

V8

Miscellaneous

DESCIHI-'TlON

Tube

soc:ket,

ceramic,

shield

Tube

Tube
Crystal

Crystal.

Crystal.
Crystal.

Wrench.
Wrench,
Wrench.
Snap
Shaft
Shaft

Shalt
Spring.
Spring,
Spring,
Spring.

Spring.
Spdn!:".

Knob,
Knob,
Knob&Skin
Knob&Dial
Knob

Knob&Dial
Knob&Dial
Knob
Chart,

Spring,

....

socket,
ceramic.
shield

socket.

socket.

for

c:rystalsVIto

spedfy
quency

l.5mc
455kc .

SCI

set

set

Bulton

Coupling,

Coupling,
soh..

Coupling.
stiff..

l'elainer

coil

assemblies"

retainer

coil'_".

grounding

transformer

com'ersion

switch

indicator

band

detent

frequency
tunin!:

& Dial

(Audio
(Crystal

(Beat

Freq.

& Dial

(Selectivity).

frequency

anti-backlash

miniature,

less

center

miniature,

with

center

.

..

"Noval"

c:eramic.

order

special.

signal

...

screw

No.6

screw

No.8

screw

No.

Plug

rigId

Rexible,

.,..

R~~ible.

.

...

for
lor

..

for

shields

...

slide

change

.,

control

lock

(large)

(RF

Gain)

Gain)

Phasing)

Osc.)

..

control

Y6
fre.

.

,

10

RF

RF

IF

".

..

.

'

.

,
,

Hammarlund

Part

No,

15989-5

15989-J
16100-1

16092-5

31473-spec.

ll130-l

ll~71-1

11806-2
11806-l
11806-4
29619·2

l1275·GI
415·G3
41$·G2

liOOl-1

310G4-1

JI023·1

31125_1

l1126_1

l120S-1

31434·GI

l1<462·GI

l1215-GI

J1227-GI

31227·G2

l1227·GJ

l1U7·G1
l1227-G5

l1463-1
l12l9-1

/9

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VIEW

FIG.6

OF

RECEIVER

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21

FIG. 7

OF

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FIG.8

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NUMBER

E,(C;

M- R

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12

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12. TERMINAL

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