Hallicrafters SX-130 Training manual

Table of contents

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OP

therafiers

OPERATING

AND

SERVICE

INSTRUCTIONS

]

COMMUNICATIONS

RECEIVER

MODEL

SX-130

ae

|

1356-00608?

Figure

1.

Hollicrafters*

Model

SX-130

Receiver.

SECTION

|

GENERAL

DESCRIPTION

The

Hallicrafters'

Model

SX-130

Communications

Receiver

is

a

four

band

superheterodyne

receiver

tuning

from

535

to

1610

kilocycles

(KC)

and

1.725

to

31.5

megacycles

(MC)

with

calibrated

electrical

bandspread

provided

on

the

80,

40,

20,

15,

10

meter

and

citizens

band.

The

frequency

range

covers

foreign

and

domestic

short-wave

broad-

casts,

amateurs,

aircraft,

and

marine

plus

standard

AM

broadcasts.

The

receiver

provides

for the

reception

of

cude

(CW),

voice

(AM),

and

single-sideband

(SSB)

signals

over

its

entire

tuning

range,

the

upper

or

lower

sideband

being

readily

selectable

by

means

of

a

front

panel

control.

This

feature

greatly

simplifies

tuning

of

single-

sideband

signals.

Other

features

of

the

Model

SX~130

include:

®

Product

detector

for

CW

and

SSB.

@Slide

rule

bandspread

dial.

®Separate

bandspread

tuning

condenser,

®Crystal

filter.

®

Antenna

trimmer

for

maximum

signal

transfer.

@"'S"

meter

to

indicate

the

accuracy

of

tuning

and

the

relative

strength

of

received

signals.

@

Front

panel

controlled

automatic

noise

limiter

reduces

interference

from

electrical

equipment,

ignition

noise,

etc.

®

Calibrated

BFO

for

USB-LSB-CW.

@

Crystal

phasing

control

for

precise

bandwidth

adjustment.

®

Manual

RF

gain

contro]

prevents

overloading

by

strong

signals.

©

Precision

tuning

mechanism

insurcs

close

cali-

bration

and

accurate

resettability.

©

Balanced

or

unbalanced

antenna

inputs.

©@

New,

handsomely

styled

cabinet.

SECTION

It

TECHNICAL

SPECIFICATIONS

Frequency

Coverage

BANG

.

as.

Warsi

ene

oem

oy

pone

REESE

ei

a

RRR

Oa

RRA

Ee

See

535

KC

to

1610

KC

Band

2

.....

aPa

woke:

le)

uaer

atti

ase,

Bros

Oe

aks,

ia

ates

Rusia

canoes

areas

tiles

1.725

MC

to

4,7

MC

Band

13)

escapist

mua

wag

i

awe

OER

S

wb

aiaed

ok

Rneiaenionin

aes

4.5

MC

to

13.0

MC

Ean

0

a

ahmg

cee

erser

gy

=

ste

Giles

do

URC

oS

aaa

DON)

alcove

nse

en

11.9

MC

to

31.5

MC

Internicdiate:

Frequenyiws

si

wcevsee

derkens

ak

a

ape

BRASS

Bad

kwh

wiee@arne

ama

1650

KC

Reception

Modes

oss

a

2cce5

ie

ore

me.

esse

dence

tone

e

Ssesn

ilaver'e

lean

apmananes

eee

ecae

ae

AM,

CW

and

SSB

Selectivity...

2...

..220

00

ceae

Variable

in

three

steps;

normal,

crystal

broad

and

crystal

sharp

Power

Source

.-..

0.2...

ccsceecseccece

spark

ayn

hc

eteee

105

to

125

volts,

50/60

cycles

Power

‘COmsUMptiOn

sie

a...

6

wiscocs

seen

ois

as

Me

REM

ASE RES

SS

ERR

REO

oer

48

watts

Adio

Power

Ouipul

sa.

am

sa

eis

+

ee

eee

BS

eR

Sita

o

aed

wun

dob

me

lbw

wlan

2

watts

Audio

Output

Impedance....-........0200.

.....

3.2

ohms;

rear

mounted

screw

terminals

Headphone

Impedance

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

50

to

2000

ohms;

panel

jack

accepts

standard

1/4

inch

phone

plug

Antenna

Input

Impedance...

.......0.2.

cece

eee

eeeaae

50

to

600,

balanced

or

unbalanced

Number

of

eQubes)

«.2

92

isd

20y.ie

ve

esicw

wastes

<a

so

Riedl

Js

ea

ae

Raw

ee

owe

Seven,

plus

one

diode

Receive/Standby

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

Rear

mounted

screw

terminals;

short

to

receive,

open

for

standby

Dimensions

s26 20h

26

sce

eae

een

neces

8

inches

high,

18-7/8

inches

wide,

9-3/4

inches

deep

Net

Weight

........

ee

Ce

Cree

ee

ee

ee

ee

ee

ee

ee

ee

ee

ee

ee

ee

+»...

22

pounds

Shipping

Weight

«5

susie

i

je

boeveeie

elie!

ey

Waka

eS

yecmi

ebm

we

we

tow

a

weiter

al

ee

edad

BUSeee

25

pounds

v6

v2B

v7

cw/SSB

6BE6

6cws

M2.

SNe

BFo/PROD.

|?

AF

AMPL/

DETECTOR

OUTPUT

V2A

(72

GEAB

VS

6AL5

AM

DET/

NOISE

LIM.

SELECTIVITY

156-006

126

Figure

2.

Block

Diagram

of

Receiver.

=a

ee

a

ee

ee

a

a

Se

|

i

SECTION

Ill

INSTALLATION

3-1.

UNPACKING.

Carefully

remove

this

equipment

from

its

carton

and

packing

material

and

examine

it

for

any

possible

damage

which

may

have

occurred

in

transit.

Should

any

sign

of

damage

be

apparent,

file

a

claim

immediately

with

the

carrier

stating

the

extent

of

damage.

Carefully

check

all

shipping

labels

and

tags

before

removing

or

replacing

them.

3-2.

LOCATION.

The

receiver

may

be

placed

in

any

location

that

will

permit

free

air

circulation

around

the

cabinet.

Avoid

excessively

warm

locations

suchas

those

near

radiators

and

heating

vents.

Also,

avoid

direct

blasts

of

air

from

circulating

fans,

etc.

3.3.

ANTENNAS.

The

Model

SX-130

uses

an

input

circuit

designed

for

a

52

to

600

ohm

input.

Any

of

the

popular

dipole,

beam

antennas

or

single

wire

antennas

will

give

good

results.

It

should

be

remembered,

however,

that

these

antennas

will

give

optimum

results

over

a

limited

frequency

range.

Generally

speaking,

the

same

rules

that

apply

to

transmitting

antennas

will

hold

true

for

receiving

antennas,

If

an

unbalanced

or

a

single

wire

antenna

is

used,

connect

one

end

to

the

terminal

marked

Al.

The

jumper

link

should

be

connected

between

A2

and

G

(see

figure

3).

For

further

information

on

this

subject,

refer

to

the

"Radio

Amateur's

Handbook"

or

the

"ARRL

Antenna

Book",

both

published

by

the

American

Radio

Relay

League.

3-4.

GROUNDS.

All

station

equipment

should

be

bonded

together

with

heavy

copper

wire

or

braid

and

connected

to

a

cold

water

pipe

or

earth

ground.

An

external

chassis

ground

terminal

is

provided

on

the

SX~130

rear

chassis

apron

for

this

purpose.

3-5.

POWER

SOURCE.

The

SX-130

is

designed

to

operate

from

a

105/125

volt,

50/60

cycle

AC

power

source.

Power

consumption

is

48

watts,

NOTE

If

in

doubt

about

your

power

source,

contact

your

local

power

company

prior

to

inserting

the

power

cord

into

any

power

outlet.

Plugging

the

power

cord

into

the

wrong

source

can

cause

exten-

sive

damage

to

the

unit.

156-006218-2

Figure

3.

Rear

View

of

Receiver.

-3-

=

i

Law

|

Rae

ian

fs

Lg

Lo

bel

son

13

2

oo

,

ay

4-2.

BAND

SELECTOR

SWITCH.

The

BAND

SELECTOR

switch

is

a

four

posi-

tion

rotary

switch,

which

is

used

to

place

the

proper

set

of

coils

into

the

circuit

to

cover

the

desired

frequency

range.

The

range

of

frequencies

covered

for

each

setting

of

the

switch

is

shown

in

the

following

chart.

SWITCH

POSITION

FREQUENCY

535

KC

—

1610

KC

1.725

MC

—

4.7

MC

4.5

MC

—

13

MC

11.9

MC

—

31.5

MC

Awd

4-3.

ANT

TRIM

CONTROL.

The

ANT

TRIM

control

is

a

variable

capa-

citor

connected

across

the

secondary

of

the

antenna

coil

in

use.

The

capacitor

adjustment

compensates

for

the

loading

effects

of

various

types

of

antennas.

This

control

should

always

be

peaked

for

maximum

signal

increase

after

the

desired

signal

has

been

tuned

in.

4-4.

XTAL

PHASE

CONTROL.

This

control

is to

be

used

with

the

SELEC-

TIVITY

switch

for

maximum

rejection

of

unwanted

signals.

Adjust

for

best

reception,

when

using

BROAD

or

SHARP

XTAL

selectivity

positions.

4-5.

SELECTIVITY

CONTROL.

This

is

a

three

position

switch

for

selecting

the

intermediate

frequency

bandwidth

required

for

different

reception

modes.

Recommended

settings

are:

NORMAL

Full

fidelity

AM

BROAD

XTAL

__

SSB,

or

AMunder

adverse

conditions

SHARP

XTAL

CW

4-6.

ANL

ON/OFF

SWITCH.

The

ANL

switch

is

normally

kept

in

the

OFF

position

and

used

when

necessary

to

eliminate

impulse

noise

in

AM

reception.

The

switch

does

not

function

when

receiving

CW

or

SSB.

4-7.

AM-CW/SSB

SWITCH.

In

the

AM

position

the

switch

connects

the

AM

detector

to

the

AF

amplifier

and

disables

the

BFO,

In

the

CW/SSB

position

the

switch

connects

the

product

detector

to

the

AF

amplifier

and

ener-

gizes

the

BFO.

4.8.

USB-CW-LSB

CONTROL.

This

control

establishes

the

frequencynec-

essary

for

proper

recovery

of

upper

sideband,

CW

(code),

or

lower

sideband

signals.

After

the

desired

signal

has

been

tuned

in,

this

control

maybe

used

for

fine

tuning

to

establish

the

desired

voice

or

code

pitch,

The

control

is

not

used

for

AM

reception.

For

single

sideband

reception,

this

control

will

usually

be

set

as

follows:

80

and

40

meters

—

LSB

20,

15

and

10

meters

—

USB

4.9.

AF

GAIN-ON/OFF

CONTROL.

The

AF

GAIN

control

turns

power

on

and

off,

also,

adjusts

the

audio

output

level

in

the

speaker

or

headphones,

Clockwise

rotation

increases

the

signal

voltage

applied

to

the

gridofthe

AF

ampli-

fier,

thus

increasing

the

audio

output.

4-10.

TUNING

AND

BANDSPREAD

CONTROLS.

These

controls

are

used

in

conjunction

with

one

another

to

tune

the

desired

signal

frequency.

Wide

tuning

is

performed

withthe

TUNING

control

and

fine

tuning

may

be

done

with

the

BANDSPREAD

control.

MAIN

TUNING

DIAL.

The

main

tuning,

or

left

hand

dial,

is

operated

by

the

TUNING

control.

The

dial

has

four

cali-

brated

scales

covering

the

following

ranges:

BAND

1......

535

to

1610

KC

BAND

2......

1.725

to

4.7

MC

BAND

3......

4.5

to

13.0

MC

BAND

4......

11.9

to

31.5

MC

Also,

a

0

to

100

scale

is

provided

for

accurately

logging

and

relocating

stations

of

special

interest.

IMPORTANT

The

main

dial

calibration

wiJl

be

correct

only

when

the

bandspread

pointer

is

set

at

the

extreme

right

(100

on

the

band-

spread

logging

scale).

SANDSPREAD

DIAL.

The

bandspread,

or

right

hand

dial,

is

op-

erated

by

the

BANDSPREAD

control.

This

dial

zontains

five

scales

calibrated

for the

80, 40,

20,

15

and

10

meter

amateur

bands

plus

the

citizens

band.

Also,

a

0

to

100

logging

scale

is

provided.

When

the

main

tuning

dial

is

set

to

the

dot

appearing

just

above

the

high

frequency

end

of

a

particular

amateur

band,

the

frequency

may

then

be

read

directly

on

the

bandspread

dial.

For

convenience

in

operation,

the

CW

portion

of

each

amateur

band

is

indicated

by

a

double

weight

line

and

the

phone

portion

by

a

triple

weight

line.

The

dot

used

for

10

meters

should

also

be

used

to

establish

bandspread

calibration

for

the

11

meter

citizens

band,

The

bandspread

dial

may

also

be

utilizedas

a

fine

tuning

adjustment

over

any

portion

of

the

receiver

tuning

range.

Two

methods

of

fine

tuning

are

described

below.

1.

The

first

method

of

fine

tuning

is

used

when

it

is

desired

to

tune

in

a

single

signal

accurately,

First

the

BANDSPREAD

control

is

set

a

few

degrees

from

its

full

clockwise

position.

Then

the

signal

is

located

withthe

MAIN

TUNING

control,

and

finally

the

signal

is

accurately

tuned

by

“rocking”

the

BANDSPREAD

control

for

best

reception.

2.

The

second

methodof

fine

tuning

is

used

when

it

is

desired

to

tune

through

a

group

of

sig-

nals.

With

the

BANDSPREAD

control

set

fully

clockwise,

adjust

the

TUNING

control

to

the

highest

frequency

signal

in

the

group.

The

other

signals

may

then

be

received

by

slowly

turning

the

BAND-

SPREAD

in

a

counterclockwise

direction,

SECTION

V

OPERATION

5-1.

AM

RECEPTION.

XTAL

PHASE

......

.....

For

best

results

a .

USB-CW-LSB

.....

Usually

LSB

for

40

and

60

Set

the

front

panel

controls

as

outlined

below:

meters;

USB

for

20,

15

and

10

meters

RF

GAIN............

Maximum

clockwise

TUNING

AND

BANDSPREAD....

As

desired

BAND

SELECTOR..........-

Desired

band

AP

GRIN:

my

egies,

Ses

ci

rctieeseces

As

required

Turn

the

receiver

on

by

rotating

the

AF

F

GAIN

control

clockwise

until

a

click

is

heard.

The

ANT

TRIM.

....

++

see

ee

Peak

on

signal

tuning

dial

will

light

up,

indicating

the

receiver

is

7.1.)

Or

6

er

ee

ea

ORE

operative.

Rotate

the

AF

GAIN

control

for

the

AM-CW/SSB

AM

desired

volume

level.

SELECTIVITY

........

NORMAL

or

BROAD

It

should

be

remembered

that

an

SSB

signal

TUNING

and

BANDSPREAD

As

desired

will

convey

intelligence

only

when

the

correct

Turn

the

receiver

on

by

rotating

the

AF

GAIN

control

clockwise

until

a

click

isheard.

The

tuning

dials

will

light

up,

indicating

the

receiver

is

operative.

Rotate

the

AF

GAIN

control

for

the

desired

volume

level.

5-2.

SINGLE-SIDEBAND

RECEPTION.

Set

the

front

panel

controls

as

outlined

below:

RE

GAIN

6.

czccreetee

heaves

BAND

SELECTOR

..

Maximum

clockwise

Desired

band

As

required

ANT

TRIM

~.....

Peak

on

signal

AM-CW/SSB

.......

CWw/SSB

SELECTIVITY...

NORMAL

OR

XTAL

BROAD

eee

eae

sideband

position

has

been

selected

by

the

USB-

CW-LSB

control.

If

the

signal

does

not

tune

properly,

move

the

USB-CW-LSB

control

to

the

opposite

sideband

position

and

retune

the

receiver.

Under

certain

conditions,

it

may

be

found

advantageous

to

reduce

the

RF

GAIN

setting

for

improved

reception.

It

should

be

remembered

that

this

will

reduce

AVC

and

also

affect

the

"S"

meter

reading.

5-3.

CW

RECEPTION.

Set

all

controls

as

shown

in

single-sideband

reception,

except

for

the

USB-CW-LSB

control

which

should

be

set

to

the

CW

position.

Under

crowded-band

conditions,

it

may

be

found

desirable

to

set

the

SELECTIVITY

switch

to

the

SHARP

position

for

improved

selectivity.

i

bs

2

1g

be

bs

a

ty.

Lee

Lg,

Late

te

Le

be

be

Dee

ceo

Ee

5-4.

USE

OF

THE

‘'S’’

METER.

The

"S"

meter

provides

a

visual

means

of

determining

whether

or

not

the

receiver

is

properly

tuned,

as

well

as

an

indication

of

the

relative

signal

strength.

The

"S"

meter

circuit

consists

of

a

DC

milliammeter

connected

in

series

with

the

cathode

lead

of

the

first

IF

amplifier

tube,

the

grid

of

which

is

controlled

by

AVC

voltage.

Since

the

cathode

current

of

this

tube

varies

with

the

strength

of

the

incoming

signal,

the

meter

will

indicate

relative

signal

strength.

The

''S"

meter

is

calibrated

in

"S"

units

from

1

to

9

and

in

decibels

above

S-9.

SECTION

VI

SERVICE

DATA

6-1.

CHASSIS

REMOVAL.

To

remove

the

chassis

and

panel

assembly

from

the

cabinet,

first

remove

three

screws

from

inside

the

cabinet,

at

the

top

of

the

front

panel.

These

screws

can

be

reached

through

the

rear

cabinet

opening.

Then

remove

five

screws

from

the

bottom

of

the

cabinet.

After

these

screws

have

been

removed,

slide

the

chassis

forward

and

out

of

cabinet,

6-2.

TUBE

AND

DIAL

LAMP

REPLACEMENT.

Tubes

may

be

replaced

from

the

rear

of

the

cabinet

without

removing

the

chassis,

When

re-

placing

dial

lamps,

it

is

recommended

that

the

chassis

be

removed

from

the

cabinet,

(Refer

to

paragraph

6-1.)

6-3.

DIAL

RESTRINGING.

To

restring

the

TUNING

or

BANDSPREAD

dials,

first

remove

the

chassis

from

the

cabinet

(refer

to

paragraph

6-1).

For

stringing

details,

see

figure

5.

6-4.

SERVICE

AND

OPERATING

QUESTIONS.

For

further

information

regarding

operation

or

servicing

of

this

equipment,

contact

the

dealer

from

whom

the

unit

was

purchased.

The

Halli-

crafters

Company

maintains

an

extensive

system

of

Authorized

Service

Centers

where

any

required

service

will

be

performed

promptly

and

efficiently

at

no

charge

if

the

equipment

is

delivered

to

the

service

center

within

90

days

from

date

of

purchase

by

the

original

buyer

and

the

defect

falls

within

BANDSPREAD

(Kk

MAIN

TUNING

K

OF

SHAFT

NOTE:

2/2

TURNS

MAIN

TUNING

AND

BAND-

SPREAD

GANGS

SHOWN

FULLY

CLOSED.

AROUND

SHAFT

AROUND

SHAFT

156-006153

Figure

§.

Dial

Cord

Restringing

Diagram.

ast

Fis

METER

ZERO

v7

6Gwe

Figure

6.

Top

View

of

Receiver.

age

—)

196-006124

3

the

terms

of

the

warranty.

It

isnecessaryto

pre-

sent

the

Bill

of

Sale

in

order

to

establish

warranty

status.

After

the

expiration

of

the

warranty,

repairs

will

be

made

for

a

nominal

charge.

All

Hallicrafters

Authorized

Service

Centers

display

the

sign

shown

at

right.

For

the

location

of

the

one

nearest

you,

consult

your

dealer

or

your

local

telephone

directory.

Make

no

service

shipments

to

the

factory

unless

instructed

to

do

so

by

letter,

as

The

Halli-

crafters

Company

will

not

accept

responsibility

for

unauthorized

shipments,

The

Hallicrafters

Company

reserves

the

privilege

of

making

revisions

in

current

produc-

tion

of

equipment

and

assumes

no

obligation

to

incorporate

such

revisions

in

earlier

models.

Authorized

hallicratiers

Service

Center

Communications

Equipment

SECTION

VII

ALIGNMENT

This

receiver

has

been

carefully

aligned

at

the

factory

by

specially

trained

personnel

using

precision

equipment.

Alignment

of

the

receiver

should

not

be

attempted

until

all

other

possible

causes

of

faulty

operation

have

been

investigated.

Alignment

should

not

be

required

unless

the

receiver

has

been

tampered

with

or

component

parts

have

been

replaced

in

the

RF

or

IF

stages,

Alignment

should

be

performed

only

by

persons

familiar

with

communications

receivers

and

ex-

perienced

in

their

alignment,

7-1.

EQUIPMENT

REQUIRED.

1.

Signal

Generator

covering

455

KC

to

30

MC.

2.

Vacuum

Tube

Voltmeter

(VTVM).

3.

Audio

output

power

meter,

set

to

3-4

ohms.

7-2.

INITIAL

CONTROL

SETTINGS.

BAND

SELECTOR.

.

.

As

indicated

in

chart

RF

and

AF

GAIN.........

Maximum

XTAL

PHASE.........-

Center

of

range

ANL

owes

eee

ee

eee

ey

oe

aa

ae

OFF

UNC

TION

|.

sc

-2

sisncetvanengue

ianeteedsie:

¥

AM

BANDSPREAD........

Fully

clockwise

Other

controls

to

be

set

as

indicated

by

the

alignment

chart.

7-3.

ALIGNMENT

PROCEDURE.

The

adjustments

mentioned

in

the

alignment

chart

may

be

located

by

referring

to

figures

6

and

7,

Before

proceeding

with

alignment

perform

the

following:

1.

Remove

chassis

from

cabinet.

(Refer

to

paragraph

6-1.)

2.

The

local

oscillator

is

1650

KC

higher

than

the

incoming

signal

on

all

bands.

3,

Connect

output

meter

to

SPKR-GND

terminals.

Use

just

enough

generator

output

to

maintain

a

500

milliwatt

reading

on

the

output

meter.

IF

ALIGNHENT

SIGNAL

SIGNAL

GENERATOR

|GENERATOR

COUPLING

FREQUENCY

Connect

high

1650

KC

side

to

pin

2

of

|

(approx.)

to

chassis.

RECEIVER

CONTROL

SETTINGS

BAND

SELECTOR-1

|

Signal

SELECTIVITY

-

Vz

and

low

sida

unmodulated

XTAL

BROAD

ADJUST

REMARKS

Use

enough

gen.

input

to

give

generator|a

slight

indication

on

the

"S"

meter.

Adjust

frequency

of

gen.

for

maximum

deflection

ofS"

meter,

The

IF

should

be

aligned

to

this

crystal

frequency.

SIGNAL

GENERATOR

COUPLING

SIGNAL

GENERATOR

FREQUENCY

Crystal

fre-

quency.

Modu-

late

generator

30%

with

400

cycles,

Same

as

step

2

unmodulated,

IF

ALIGNMENT

(CONT.)

RECEIVER

CONTROL

SETTINGS

BAND

SELECTOR-1

SELECTIVITY

-

NORMAL

BAND

SELECTOR-1

SELECTIVITY

-

NORMAL

FUNCTION-CW/SSB

Adjust

top

and

bottom

cores

for

maximum

audio

output.

Remove

knob

from

CW-USB-

LSB

control

and

adjust

L14

shaft

for

zero

beat.

Replace

knob

with

white

indicator

dot

in

center

of

CW

line

on

panel.

RF,

MIXER

AND

OSCILLATOR

ALIGNMENT

All

controls

set

as

in

initial

control

settings.

Generator

modulated

30%

with

400

CPS.

SIGNAL

GENERATOR

|GENERATOR

FREQUENCY

COUPLING

Connect

high

side

to

Al,

low

side

to

GND.

(A2

&

GND

tied

together.)

Same

as

step

1.

Same

as

step

1.

Same

as

step

1.

Same

as

step

1.

Same

as

step

1.

Same

as

step

1.

Same

as

step

1.

SIGNAL

1400

KC

RECEIVER

CONTROL

SETTINGS

BAND

SELECTOR-1

TUNING

-

1400

KC

BAND

SELECTOR-1

TUNING

-

600

KC

BAND

SELECTOR-2

TUNING

~

4.0

MC

BAND

SELECTOR-2

TUNING

-

1.8

MC

BAND

SELECTOR-3

TUNING

-

11

MC

BAND

SELECTOR-3

TUNING

-

5

MC

BAND

SELECTOR-4

TUNING

~

28

MC

BAND

SELECTOR-4

TUNING

-~-

14

MC

~0-

C3

(Osc,

trimmer)

C23

(Mix.

trimmer)

C13

(ANT

TRIM)

L4

(Osc.

coil)

L12

(Mix.

coil)

C13

(ANT

TRIM)

C2

(Osc.

trimmer)

C22

(Mix.

trimmer)

C13

(ANT

TRIM)

L3

(Osc.

coil)

L13

(ANT

TRIM)

C1

(Osc.

trimmer)

C21

(Mix.

trimmer)

C13

(ANT

TRIM)

L2

(Osc.

coil)

L10

(Mix.

coil)

C13

(ANT

TRIM)

C6

(Osc.

trimmer)

C20

(Mix.

trimmer)

C13

(ANT

TRIM)

L1

(Ose.

coil)

L?

(Mix.

coil)

C13

(ANT

TRIM)

REMARKS

Adjust

for

max-

imum

output,

Adjust

for

max-

imum

output.

Adjust

for

max-

imum

output.

Adjust

for

max-

imum

output.

Adjust

for

max-

imum

output.

Adjust

for

max-

imum

output.

Adjust

for

max-

imum

output.

Adjust

for

max-

imum

output,