094 903286B_Hallicrafters_SR 150_Operating_And_Service_Instructions_May63 903286B Hallicrafters SR 150 Operating And Service Instructions May63

User Manual: 094-903286B_Hallicrafters_SR-150_Operating_And_Service_Instructions_May63

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hallicraliers

OPERATING

AND

SERVICE

INSTRUCTIONS

COMMUNICATIONS

TRANSCEIVER

MODEL SR-1SO

IMPORTANT

BEFORE

OPERATING

THE

SR-1S0

REFER

TO

PAGE

16

OF

THIS

MANUAL,

PARAGRAPH

8-3

(BIAS

ADJUSTMENT).

THE

BIAS

ADJUST-

MENT

ON

THE

POWER

SUPPLY

MUST

BE

SET

PROPERLY

TO

PRE-

VENT

PERMANENT

DAMAGE

TO

THE

FINAL

AMPLIFIER

TUBES

AND

FOR

OPTIMUM

PERFORMANCE

OF

THIS

EQUIPMENT.

"

Th

e Hallicrafter's Co

mpany

u;

arrants each ne

u;

radio product

manu-

fa

ctured

by

it to be

fr

ce. from defective mate

ri

al

and

u;

orkmans

hip

and

agrees to reme

dy

allY S

IIeI.

defect or to fllTllish a neu; pa

rt

in ex-

change for

any

part of

any

unit of its manllfacture u;hich

und

er no

r-

mal

installation, use

and

service discloses such defcct, pr

ov

id

ed the

unit

is de

li

vc

red

by

the o

u;n

er to

Oll

r autho

ri

zed radio d

ea

ler,

u;

hole-

saler,

fr

om

u;/lOm

pllrchased, or, autho

ri

ze

d service ce

nt

er,

ill

tact, for

examination, u;ith all trans/

JO

rtation charges prepa

id

u;ithin nine

ty

days from the date

of

sale to o

ri

ginal /,urchaser

and

pro

vid

ed that

such examination

di

scloses in Ollr

;udgm

e

nt

that it

is

thu

s defective.

This u;arranty does not exte

nd

to

any

of

our radio products u;hich

hav

e been sub;ec

ted

to misuse, neglect, ac

cid

ent,

in

co

rr

ect

u;

iring not

our ou;n,

improper

instal/at ion, or to use in violation

of

in

structions

furnished

by

us, nor exte

nd

ed to units u;hich ha

ve

been repaired

or

altered

outsid

e

of

our factory or authori

ze

d scr

t;

ice center, nor to cases

u;here

the

serial

numb

er thereof has been re

mo

ved, de

fa

ced or changed,

not

to accessories

used

th

ereu;ith not

of

our

own

manufa

ctur

e.

Any

part

of

a

unit

approv

ed for reme

dy

or exchange here

und

er

u;i1/

be

reme

di

ed or exc

hang

ed

by

the authorized radio dealer or

u;h

ole-

saler u;ithout charge to

the

ou;ner.

This

u;arranty is in lieu

of

all other u;arranties expressed or implied

and

no representative or person is aut/lOrized to assume for

""

allY

other

liability in connection u;ith the sale

of

our radio products:'

pliXff}

hallicraliers

CS@o

092·017851

Figure

I.

Hol/icroffers

Model

SR·

150

Transceiver.

SECTION

I

GENERAL

DESCRIPTION

The

Hallicrafters

Model

,

SR-150

Transceiver

is

a

precision-built,

compact,

high-performance

radio

equipment

of

advanced

design.

This

trans-

ceiver

utilizes

19

tubes

and

a

dual

conversion

IF

to

provide

for

the

transmission

and

reception

of

single-sideband

(SSB)

and

continuous

wave

(CW)

signals

on

the

80, 40, 20, 15,

and

10

meter

bands.

The

versatility

of

SR-150

equipment

permits

it

to

be

operated

as

a

fixed

station

or

as

a

mobile

equipment.

A

117-volt,

50/

60-cy

cle,

AC

power

supply,

complete

with

speaker

(Model

PS-150-

120),

is

available

for

fixed-station

use;

a

12-volt

DC

power

supply

,

Model

PS-150-12,

and

amobile

mounting

rack

(Model

MR-150)

are

available

when

the

transceiver

is

to

be

used

in

a

mobile

configuration.

An

advanced

feature

of

the

SR-150

equipment

is

the

Receiver

Incremental

Tuning

(RIT)

con-

trol.

This

control

enab

les

the

operator

to

unlock

the

receiver

frequency

and

tune

the

receiver

apprOXimately two

KC

either

side

of

the

trans-

mitter

frequency.

Flipping

the

RIT

switch

OFF

automatically

returns

the

equipment

to

the

trans-

ceiver

condition.

·1·

Another

special

feature

is

the

amplified

Automatic

Audio

Level

Control

(AALC)

which

functions

in

the

transmit

mode.

The

AALC

circuitry

prevents

splatter

due

to

severe

flat-topping

of

the

final

amplifier

by

providing

about

15 DB

of

compres-

sion

after

a

small

amount

of

flat-topping

occurs.

Other

features

of

the

Model

SR-150

Transceiver

include:

• A

stable,

accurately-calibrated

VFO.

• A

built-in,

100-KC

crystal

calibrator.

•

Upper

and

lower

sideband,

MaX,

(push-to-

talk),

VOX,

Manual

CW,

and

break-in

CW

operation.

• A

crystal-lattice

filter.

• A

product

detector.

• An

S-meter

/

RF

output

level

indicator.

IMPORTANT

Do

not,

under

any

circumstance,

attempt

to

operate

the

SR-150

equipment

before

becoming

completely

familiar

with

the

in-

structions

contained

within

this

manual.

SECTION

II

TECHNICAL

DATA

TUBES

AND

FUNCTIONS

VI

6AZ8

Receiver

RF

Amplifier

and

Calibrate

Oscillator.

V2

12BA7

Receiver

and

Transmitter

First

Mixer

V3

6EA8

6.0-MC

to

6.5-MC

IF

Amplifier

and

Audio

Cathode Follower.

V4

12BA7

Receiver

Second

Mixer.

V5

6EA8

Receiver

Second

!650·KC

IF

Amplifier

and

AALC

Amplifier.

V6 12BE6

Product

Detector.

V7 6AH6

Transmitter

Second

Mixer.

V8

12AT7

Heterodyne

Oscillator

and Cathode Follower.

V9

6EA8

VFO and Cathode Follower.

Vl0

12AT7

Carrier

Oscillator/BFO.

FREQUENCY

COVERAGE:

Eight-band

capability

-

Full

coverage

provided

for

80,

40, 20,

15,

and

one

segment

of

the

10-

meter

band.

Provisions

made

and

crystals

available

for

the

remaining

three

segments

of

the

10-meter

band.

Other

frequencies

are

avail-

able

on

request.

OPERATION:

Single

Sideband

-

VOX

or

MOX

(push-to-talk).

CW -Manual

or

break-in.

FRONT

PANEL

CONTROLS:

Tuning;

Band

Selector;

Final

Tuning;

RF

Level

-Mic Gain;

Preselector;

RIT;

RF

Gain

-

AF

Gain;

Operation

(Off/Standby/MOX/

VOX);

Function

(CW/USB/LSB);

Cal;

Cal Adj.

GENERAL:

Dial

Calibration

-

5-KC

increments

(Built-in,

100-KC

crystal

calibrator).

Calibration

Accuracy

-

Less

than

2

KCbetween

100-

KC

points

after

in-

dexing.

VFO

-

500-KC

tunable

range.

stability

-

Less

than

300

CPS

after

warmup.

Tubes

-18

plus

one

voltage

regulator,

ten

diodes,

and

one

varicap.

-2-

Vl1

6T8A

Receiver

First

Audio,

AGC

Detector,

VOX

Diode, and

QT

Diode.

V12

OA2

Voltage

Regulator.

VB

6AQ5A

Receiver

Audio

Output.

V14

12DQ6B/

12GW6

Power Amplifier.

V15

12DQ6B/

12GW6

Power

Amplifier.

V16

12BY7A

Transmitter

Driver.

V17

6EA8

Receiver

and

Transmitter

1650-KC

IF

Amplifier

and

Meter

Amplifier.

V18

12AX7

First

and

Second

Microphone

Amplifier.

V19

12AT7

VOX

Amplifier

and

VOX

Relay

Amplifier.

Ambient

Temperature

Range

-

Minus

20°

to

plus

50°C.

Construction

-

Rugged,

lightweight

aluminum.

Dimensions

(HWD)

-

6-1/2

by 15

by

13

inches.

Net

Weight -

17-1/2

pounds.

Shipping Weight -

22

pounds

(approx).

TRANSMITTER:

Output

Tubes

-Two 12DQ6B

tubes

in

parallel.

Output

Impedance

-

Fixed,

50-ohm

pi-network.

Power

Input

-SSB

....

150

watts

PEP

MAX.

CWo

....

125

watts

MAX.

Carrier

and

Unwanted

Sideband

Suppression

-50 DB.

Distortion

Products

-30 DB.

Audio

Response

-600 CP S to 2800

CP

S @ 3 DB.

Microphone

Input

-High

impedance.

RECEIVER:

Sensitivity

- 1

microvolt

for

a

20-DB

signal-to-

noise

ratio.

Audio

Output

- 2

watts.

Output

Impedance

-

3.2

ohms

and

500

ohms.

Overall

Gain

-1

microvolt

for

1/2

watt

output.

Antenna

Input""::"

50

ohms.

IF

-Dual

Conversion:

First

IF

....

6.0

MC

to 6.5

MC

variable

(tunes

with

the

VFO).

Second

IF

...

1650 KC,

crystal-lattice

filter.

Heterodyning

Crystals

-

Type

CR-23/U,

third

overtone,

series

re-

sonant.

ACCESSORIES:

Mobile

Mounting

Rack

Model

MR-150

-

Quick

release

design

adaptable

to

transmission

hump

or

floor

mount

...

all

connections

made

simul-

taneously

...

access

holes

for

VOX

controls.

Net

Weight -10

pounds.

Shipping Weight -

12-3/4

pounds

(approx).

12-volt

DC

Power

Supply Model

PS-150-12

Designed

for

out-of-the-way

trunk

installation

...

terminal

strip

provides

for

quick-and-easy

connection

to

the

cable

from

the

mounting

rack

...

contains

five

silicon

diode

rectifiers

and

four

transistors.

Input

Power

Requirements:

Transmit

(CW)

....

19

amperes.

Receive

.........

14

amperes.

Dimensions

(HWD)

-

3-3/4

by10

by6-3/4

inches.

Net

Weight -

5-1/2

pounds.

Shipping Weight - 9

pounds

(approx).

117-volt

AC

Power

Supply Model

PS-150-120

-

Styled

as

a

companion

unit

to

the

Model SR-150

Transceiver,

this

supply

also

contains

a

4-inch

by

6-inch

speaker

...

one-cable

connection

carries

power

to,

and

audio

from,

the

transceiver

..

may

be

plugged

into

any

115-voltwall

outlet..

contains

five

silicon

diode

rectifiers.

Input

Power

Requirements:

Transmit

(CW)

....

290

watts.

Receiver

........

150

watts.

Dimensions

(HWD)

-

6-1/4

by7-1/2

byl0

inches.

Net

Weight -

22

pounds.

Shipping Weight -

28-1/2

pounds

(approx).

SECTION

III

INSTALLATION

WARNING

LETHAL

HIGH VOLTAGE IS

PRESENT

WITHIN THIS EQUIPMENT.

BE

CARE-

FUL

WHEN INSTALLING

THE

UNIT,

WHEN

MAKING BIAS ADJUSTMENTS,

AND WHEN

PERFORMING

CHECKS

UNDER

THE

CHASSIS.

3·1.

UNPACKING.

Carefully

remove

this

equipment

from

its

carton

and

packing

material

and

examine

it

for

any

possible

damage

which

may

have

occurred

during

transit.

Should any

sign

of

damage

be

ap-

parent,

immediately

file

a

claim

with

the

carrier

stating

the

extent

of

the

damage.

Check

all

ship-

ping

labels

and

tags

for

special

instructions

before

removing

or

destroying

them.

3·2.

LOCATION.

The

Model SR-150

Transceiver

maybeplaced

in

any

location

permitting

free

air

circulation

through

the

ventilation

openings

in

the

cabinet.

However,

excessively

warm

locations

such

as

those

adjacent

to.

radiators

and

heating

units

should

be

avoided.

3·3.

ANTENNAS.

Antenna

connections

are

provided

on

the

rear

of

the

transceiver,

as

shown

in

figure

2.

If

a

com-

mon

antenna

is

used,

the

antenna

switch

(S2)

should

·3·

be

in

the

down (common)

position

and

the

antenna

connected

to

the

bottom

connector.

If

separate

antennas

are

used,

the

switch

should

be

up,

the

receiver

antenna

should

be

connected

to

the

top

connector

(Jl),

and

the

transmitter

antenna

con-

nected

to

the

bottom

connector

(J2).

Figure

3

shows

an

installation,

in

block

dia-

gram

form,

making

use

of

a

linear

amplifier

and

an

external

antenna

changeover

relay.

Connections

to

the

power

supply

from

the

antenna

changeover

relay

are

internal

solder

connections.

Refer

to

figures

14,

15,

17,

and

18

for

the

internal

chassis

views

and

schematic

diagrams

of

the

power

sup-

plies

used

in

conjunction

with

the

Model b'R-150

Transceiver.

In

the

installation

Shown,

the

re-

ceiver

is

connected

directly

to

the

relay

through

the

top

antenna

connector

(Jl);

the

transmitter

is

connected

through

the

bottom

antenna

connector

(J2) to

the

linear

amplifier

which,

in

turn.

is

con-

nected

to

the

relay.

If

desired,

two

separate

anten-

nas

may

be

used

in

the

installation

shown,

elimina-

ting

the

use

of

the

antenna

changeover

relay.

NOTE

Never

operate

the

transceiver

without

making

a

connection

to

a

proper

antenna

or

to a

resistive

dummy

load.

Refer

to

the

ARRL handbook

or

similar

pub-

lications

for

the

selection

and

installation

of

antennas.

52

JI

J2

J7

J4

J5

092-017850

Figure

2.

Rear

View

of

Transceiver.

3-4. MOBILE INSTALLATION.

The

Model SR-150

Transceiver

may

be

in-

stalled

in

any

vehicle

having a

12-volt

DC

power

source.

To

complete

this

mobile

installation,

a

Model

PS-150-12

Power

Supply and a Model

MR-150 Mobile Mounting

Rack

will

be

required.

The

PS-150-12

Power

Supply,

as

shipped,

is

wired

for

vehicles

having

the

negative

side

ofthe

battery

grounded_

If

this

equipment

is

to

be

installed

in

vehicles

having

the

positive

side

grounded,

make

the

wiring

change

noted

in

figure

18,

schematic

diagram

of

the

Model

PS-150-12

Power

Supply.

Before

installing

the

equipment,

it

is

neces-

sary

to

set

the

position

of

the

connectors

in

the

rear

of

the

mounting

rack.

This

may

be

accom-

plished

as

follows:

1. Set

the

mounting

rack

on a

work

bench

with

the

rear

of

the

rack

on

the

bench

and

the

side

panels

open. Make

sure

the

four

nuts

securing

the

power

and

antenna

con-

nectors

have

been

loosened.

2.

Holding

the

transceiver

with

the

front

panel

up,

very

carefully

slide

the

trans-

ceiver

into

the

rack

until

the

power

and

antenna

connectors

mate

with

those

in

the

mounting

rack.

IMPORTANT

Extreme

care

must

be

exercised

inper-

forming

this

step

to

prevent

damaging

the

connectors

on

the

transceiver

and

in

the

mounting

rack.

-4-

3. With

the

transceiver

securely

in

position,

turn

the

equipment

on

its

side

and tighten

the

four

nuts

holding

the

connectors

in

the

mounting

rack

in

place.

4.

Carefully

remove

the

transceiver

from

the

mounting

rack

and

proceed

with

the

installation.

A

base

bracket

and mounting

straps

are

pro-

vided

for

installing

the

Model MR-150 Mounting

Rack

under

the

dashboard

or

on

the

transmission

hump

(see

figure

4). When

selecting

a

location

for

installing

the

mounting

rack,

an open

area

should

be

allowed on

the

top

or

bottom

to

provide

adequate

ventilation

for

the

transceiver

when

it

is

inplace.

The

SR-150

Transceiver

may

be

installed

at

this

time

if

desired.

Before

installing

the

trans-

ceiver

in

the

mounting

rack,

ascertain

that

the

antenna

switch

on

the

rear

panel

is

in

the

down

(common)

position.

Slide

the

transceiver

back

into

the

MR-150 Mounting

Rack

so

that

a good

connec-

tion

is

made

to

the

power

and

antenna

receptacles

on

the

rear

inside

of

the

mounting

rack.

Secure

the

units

together

by

means

of

the

wing

screws

on

both

sides

of

the

mounting

rack.

The

Model

PS-150-12

Power

Supply

may

be

installed

in

any

convenient

location.

In

the

instal-

lation

discussed

in

this

book,

the

power

supply will

be

installed

in

the

trunk

'(see

figure

5). Mount

the

power

supply

securely,

using

self-tapping

screws.

Position

the

power

supply

in

such

a

manner

that

the

side

with

the

terminal

strips

is

accessible.

LINEAR

AMPlIFIE.R

IN

OUT

TRANSMIT

,--

--0

\[7

EXTERNAL

ANTENNA

RELAY

SR - I

50

TRANSCEIVER

RECEIVE

b D

-0

POWER

ANTENNA

~

POWER I

SUPPLY

SWITCH

L..o

SOCKET

....

I

PS-150-120

(UP)

(MALE)

I

A I

II

!O

PIN

II

POWER

(?

PIN

10

PLUG

(FEMALE)

TO

EXTERNAL

117

V-GO

CPS

)

092·017686B

Figure

3.

Base

InstalIation, Using a Linear Amplifier.

Run

the

cable

from

the

mounting

rack

under

the

floor

mat

and

under

the

rear

seat

into

the

trunk.

Since

this

cable

is

weatherproof,

it

may

be

threaded

underneath

the

vehicle

if

desired.

Cut

the

cable

to

the

desired

length,

strip

the

wires,

and

connect

these

wires

to

the

terminal

strip

on

the

power

supply

(see

figures

5 and 17

for

color

coding

and

terminal

numbering).

IMPORTANT

Before

connecting

to

the

vehicle's

bat-

tery,

check

the

transceiver,

if

already

installed,

to

ascertain

that

the

OP

ERA-

TION

switch

is

in

the

OFF

position.

Connect

the

two

NO.

8 A

WG

wires

supplied

between

the

two-connector

terminal

strip

on

the

power

supply

and

the

battery.

The

red/white

wire

should

be

connected

from

the

top

terminal

on

the

power

supply

to

the

positive

(+)

side

of

the

battery

and

the

red/black

wire

from

the

bottom

terminal

to

the

negative

(-)

side

ofthe

battery.

These

wires

should

be

cut

to a

suitable

length

before

being

con-

nected

to

the

battery.

The

positive

lead

should

be

connected

to

the

battery

through

a

30-ampere

fuse

block

(not

supplied,

see

figure

5).

If

the

vehicle

has

a

positive

ground

electrical

system,

fuse

the

nega-

tive

lead.

CAUTION

USE CARE WHEN MAKING CONNEC-

TIONS TO THE BATTERY IN THE

VEHICLE. THE POWER

IN

ABATTERY

CAN CAUSE DANGEROUS BURNS

AND

EVEN EXPLOSION

IF

SHORT

CIRCUITED.

·5-

Connect

the

speaker

to

the

jack

provided

on

the

side

of

the

mounting

rack.

This

jack

accepts

a

standard

PL55

type plug.

Use

of

the

auto

radio

loud

speaker

is

not

recommended

unless

a

switch

is

installed

to

remove

the

speaker

from

the

auto

radio

when

operating

the

SR-150.

Install

the

antenna

in

the

manner

recom-

mended

by

the

antenna

manufacturer.

Connect

the

coaxial

cable

from

the

antenna,

through

the

hole

in

the

right

side

of

the

mounting

rack,

and

solder

to

the

rear

of

the

phono-pin-plug

type

connector

in

the

rear

of

the

mounting jack.

Use

care

when

soldering.

Solder

on

the

outside

of

the

center

pin

must

be

removed

to

prevent

possible

damage

to

the

female

antenna

connector

in

the

transceiver.

If

desired,

prior

to

installing

the

mounting

rack,

a

length

of

coaxial

cable

may

be

connected

from

this

phono-pin-plug

type

connector

to

a

coaxial

connector

attached

to

the

right

side

of

the

mount-

ing

rack

in

the

space

provided.

If

this

is

done,

when

the

antenna

is

installed,

it

may

be

attached

to

the

connector

using

a

mating

connector.

Connect

a

suitable

microphone

to

the

jack

provided

on

the

front

panel.

It

is

important

that

the

internal

wiring

of

the

microphone

be

as

shown

in

figure

6.

IMPORTANT

Before

proceeding,

refer

to

alignment

procedure,

paragraph

8-3,

for

bias

adjustment.

1111111111111111111111111111111111111111111111111t-

DASH BOARD

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TRANSMISSION HUMP

092·019687

Figure

4.

Installing

the

Moclel

MR·150 Mounting

Rack.

Only

after

familiarizing

yourself

with the

controls

and

their

functions,

as

outlined

in

Sections IV and

V,

should you

perform

an

opera-

tional check.

It

is

recommended

that

the engine

be

running

while

operating

the

Model SR-150

Trans-

ceiver

to

prevent

drainingpower

from

the

battery.

3·5.

MOBILE

NOISE

SUPPRESSION.

The following

suggestions

may

be

helpful

in

the

suppression

of

noise

encountered

in

mobile

operation.

Install

resistor-type

spark

plugs and

coaxial

bypass

capacitors

in

the

ignition

coil,

generator,

and voltage

regulator

leads.

Install

bracket-mounted

coaxial

capacitors

in

the

gener-

ator

and

battery

leads

to the voltage

regulator

and

connect

a 0.005

microfarad

mica

or

disc

capacitor

from

the

generator

lead

to ground. Chokes

maybe

used

in

the

generator

field

and

armature

leads

instead

of the

bypass

capacitors

-

approximately

12

turns

of

NO.

18

wire

on a

1/4-inch

powdered

iron

core

for

the field

lead

choke and

approxi-

mately

12

turns

of

NO.

12

or

NO.

14

wire

on a

1/4-inch

powdered

iron

core

for

the

armature

lead

choke.

·6·

Hallicrafters

has

available

a Mobile

Noise-

Suppression

Kit, Model HA-3, which will fulfill

any

suppression

requirements

of

this

installation.

Additional

information,

concerning

the

proper

suppression

of mobile

noise,

is

available

in

the

Handbook of

Instructions

for

Hallicrafters'

Model

HA-3 Mobile Noise Suppression Kit and

in

other

current

handbooks on the

same

subject.

3·6.

BASE

INSTALLATION.

The Model SR-150

Transceiver,

as

a

base

station,

may

be

used

with

or

without a

linear

amplifier.

To

operate

from

117

volts

AC, the

Model PS-150-120

Power

Supply,

or

an equivalent,

is

required.

Merely

connect

the

power plug

from

the

power supply to the

receptacle

on the

rear

of

the

transceiver,

connect the

AC

cord

from

the

power supply to the wall

outlet,

and connect to an

antenna

installation

as

described

in

paragraph

3-3.

A four by

six

inch

speaker

is

contained

in

the

power

supply and

is

interconnected

to the

trans-

ceiver

through

the

power plug.

2

RED

#18; 250V

@175 MA

WHITE #18; NEGATIVE

BIAS

BLACK/WHITE

#18;

SWITCHING

BROWN #12; HEATERS

BLACK

#12; GROUND

ORANGE # 18;

SPARE

PS-150

-12

POWER SUPPLY

m

TO

POSITIVE POST

"

OF

BATTERY

I

30

AMP

FUSE

TO

TOP (+)

TERMIN,AL

ON

POWER SUPPLY

Figure

5.

Wiring Diagram

01

Mobile

Installation.

r-

--

-.

-

I

I

I

I

I

MICROPHONE

I

L_

---

-.J

PLUG

089·003330

Figure 6.

Required

Microphone Wiring.,

IMPORTANT

Before

operating

the

SR-150,

the

bias

adjustment

control

on

the

power

supply

must

be

set.

See

paragraph

8-3

of

the

alignment

procedure.

If

a

linear

amplifier

and an

antenna

change-

over

relay

are

used,

the

cap

on

the

plug

of

the

power

supply

cable

must

be

loosened,

enabling

wires

to

be

soldered

to

pins

10 and

11

of

the

plug

(see

figure

3),

thus

providing

a

control

circuit

for

the

relay.

..

.

SECTION

IV

FUNCTION

OF

OPERATING

CONTROLS

All

controls

utilized

during

normal

oper-

ation

of

Hallicrafters

Model

SR;;.150

Transceiver

are

located'

on

the

front

panel

(see

figure

7). .

4-1. RIT CONTROL -ON/OFF.

, :

.'

The

Receiver

Incremen.tal

Tuning

(RIT)

·con-

. . .

trol

is

made

up of two

controls;with

concentI:~c

-7-

shafts.

The

ON/OFF

function of

the

lever

control

either

puts

the

variable-element

RIT

control

in

or

out

of

operation.

This

control,

in

the

ON

position

,

enables

the

operator

to

fine-tune

the

receiver

plus

or

minus

two

KC

by

means

of

the

RIT

potentio-

meter

(round knob) without

disturbing

the.initial

calibration

or

tr.an~mitting

frequency.

Returning

the

control

to

the

OFF

position

locks

Ule

receiver

frequency

to

the

transmitter

frequency.

092-0

17

8

49

Figure

7.

Front Panel

View

of

Transceiver

.

4-2.

RF

GAIN

-

AF

GAIN.

The

RF

GAIN and

AF

GAIN

controls

are

two

controls

mounted

on

concentric

shafts.

The

RF

GAIN

control

(lever

contr

-ol)

varies

the

gain

of

the

receiver

RF

amplifier

and

mixer.

Maximum

sen-

sitivity

is

obtained

with

the

control

set

at

10

(fully

clockwise).

The

AF

GAIN

control

(round knob)

adjusts

the

the

audio

output

level

at

the

speaker

terminals

and

PHONES

jack.

Clockwise

rotation

increases

the

signal

applied

to

the

grid

of

the

audio

amplifier,

thus

increasing

the

audio output.

4-3.

OPERATION.

The

OPERATION

control

is

a

four-position

switch.

In

the

OFF

pOSition,

all

power

is

discon-

nected

from

the

circuitry.

In

the

STBY

position,

the

receiver

portion

of

the

unit

is

in

operation

and

all

circuits

common

to

both

receiver

and

transmitter

are

in

the

receive

condition. In

this

position,

those

functions

used

only

in

the

transmit

mode

are

biased

off.

In

the

MOX

(push-to-talk)

,

position,

the

transmitter

portion

of

the

unit

is

in

operation

and

all

circuits

common

to

both

trans-

mitter

and

receiver

are

in

the

transmit

condition.

In

this

pOSition,

those

circuits

used

only

in

the

receive

mode

are

automatically

biased

off when

the

transmitter

is

keyed

(microphone

button

depressed).

In

the

VOX

position,

the

transmitter

is

energized

by

voice

or

part

of

the

first

char-

acter

of a CW

transmission.

In

the

absence

of

voice

or

keying,

the

unit

is

automatically

placed

in

the

receive

mode.

This

portion

can

also

be

referred

to

as

Automatic.

4-4

.

MIC

JACK.

The

MIC

jack

provides

for

the

connection

of

a

push-to-talk

microphone

for

use

in

MOXtrans-

mission.

Thepush-to-talk

switch

is

bypassed

when

transmitting

in

the

VOX

mode.

4-5.

FUNCTION.

The

FUNCTION

control

is

a

three-position

switch.

This

switch

is

used

to

select

the

mode

of

operation:

CW, LSB,

or

USB.

4-6.

CALIBRATION

ADJUSTMENT

(CAL

ADJ)

.

The

CAL ADJ

control

varies

the

frequency

of

the

Variable

Frequency

Oscillator

(VFO)

over

a

small

range

so

that

its

frequency

can

be

set

precisely

when

compared

to a

standard.

4-7.

TUNING

(VFO).

The

TUNING

control

tunes

in

the

frequency

to which you

are

listening.

This

control

is

con-

nected

to

the

tuning

dial

which

presents

a

visual

indication

of

the

frequency

in

the

left-hand

window

on

the

panel.

As

an

added

feature,

the

position

of

this

knob

may

be

adjusted

by

using

the

bristol

wrench

supplied.

Loosen

the

two

set

screws

and

position

the

TUNING knob on

the

shaft

against

the

felt

pad

for

the

desired

amount

of

dragor

torque.

4-8.

OFF-CALI

BRA

TE

(CAL).

The

OFF-CAL

control

is

a

two-position

switch

used

to

turn

the

crystal

calibrator

off

or

on.

When

in

the

CAL

or

on

position,

it

provides

stan-

dard

frequencies

at

100-KC

intervals

to

accurately

-8-

calibrate

the

VFO.

4-9. BAND SELECTOR.

The

BAND SELECTOR

control

is

an

eight-

position

switch

used

to

select

the

desired

band

for

receiving

or

transmitting.

This

control

also

indicates

the

low-frequency

end of

the

band

and

which

scale,

red

or

black,

to

read

on

the

dial

for

direct

frequency

determination.

4-10.

PHONES

JACK

The

PHONES

connector

provides

for

the

use

of

commercially

available

headphones.

When

headphones

are

used,

the

internal

wiring

to

the

speaker

terminals

is

disconnected.

4-11.

PRESELECTOR.

The

PRESELECTOR

tunes

to

the

desired

frequency

within a given

band,

as

indicated

by

the

setting

of

the

BAND SELECTOR.

The

function of

the

PRESELECTOR,

however,

is

determined

by

the

OPERATION

control.

With

the

OPERATION

control

in

the

STBY

position,

the

PRESELECTOR

tunes

the

receiver

RF

and

first

mixer

stages;

with

the

OPERATION

control

in

the

MOX

or

VOX

position,

the

PRESELECTOR

tunes

the

transmitter

mixer

and

driver

stages.

4-12.

RF

LEVEL-MIC

GAIN

The

RF

LEVEL

and MIC GAIN

controls

are

two

controls

mounted

on

concentric

shafts.

The

RF

LEVEL

control

(lever

control)

varies

the

out-

put

of

the

transmitter

mixer,

thereby

varying

the

RF

output.

Maximum

drive

to

the

output

stages

is

obtained

with

the

control

set

at

10 (fully

clockwise).

The

RF

LEVEL

control

functions

only

in

the

CW

mode

of

operation.

The

MIC

GAIN

control

(round knob)

varies

the

audio

level

from

the

microphone

amplifier

stages

to

the

balanced

modulator.

The

control

has

suffi-

cient

range

to

permit

adjustment

of any

high-level

crystal

microphone

or

low-level

dynamic

micro-

phone

normally

used

for

voice

communication.

4-13.

FINAL

TUNING.

The

FINAL TUNING

control

consists

of a

continuously

tunable

capacitor

with

a

band-

segment

indicator.

This

control

tunes

the

final

output

stage

to

the

operating

frequency.

4-14. S-METER.

This

meter

functions

as

an

indicator

of

rei

a-

tive

signal

strength

in

the

Receive

mode

and

as

a

relative

power

output

indicator

in

the

Transmit

mode.

SECTION

V

TUNING

PROCEDURE

5-1. GENERAL.

The

tuning

procedure

of

the

Model SR-150

Transceiver

is

not

complicated;

however,

care

should

be

exercised

when tuning to

insure

peak

performance

of

the

equipment.

The

following

paragraphs

describe

the

procedures

for

receiver

and

transmitter

tuning.

IMPORTANT

Before

operating

the

SR-150,

the

Bias

Adj.

control

on

the

power

supply

must

be

set.

See

paragraph

8-3

of

alignment

procedure.

5-2. RECEIVER CALIBRATION.

Preset

the

controls

as

indicated:

OPERATION

......

STBY

(receive,powero~

RF

GAIN

........

Maximum

AF

GAIN

........

As

required

FUNCTION

.......

Desired

sideband

BAND SELECTOR

..

Desired

band

TUNING

.........

100-KC

point

nearest

desired

frequency

-9-

PRESELECTOR

....

Desired

band

segment

RIT

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

OFF

CAL

...........

CAL (on)

CAL ADJ

........

As

required.

To

calibrate,

set

the

TUNING

control

to

the

100-KC

point

on

the

dial

nearest

the

desired

frequency.

Rotate

the

CAL ADJ

control

for

zero

beat.

It

may

be

necessary

to

increase

the

AF

GAIN

control

to

get

sufficient

indication

at

or

near

zero

beat.

The

RIT

control

switch

must

be

in

the

OFF

position

when

calibrating.

Turn

the

CAL

switch

to

OFF

and tune

to

the

desired

frequency.

Peak

the

PRESELECTOR

control

for

maximum

S-meter

indication.

NOTE

The CAL

switch

should

be

in

the

OFF

pOSition

in

normal

use

of

the

receiver.

It

should

be

in

the

CAL

position

only

when

calibrating

the

receiver.

5-3. BASIC TUNE-UP.

Preset

the

indicated

controls

as

follows:

OPERATION

......

MOX

FINAL TUNING

....

Desired

band

segment

FUNCTION

.......

CW

BAND

SELECTOR

..

Desired

band

TUNING

.........

Desired

frequency

PRESELECTOR

...

Desired

band

segment

RF

LEVEL

..

-

....

Between 4 and 5,

or

as

required.

Adjust the

RF

LEVEL

control

until a

small

indication

is

seen

on the

S-meter.

In

the

transmit

mode, the

S-meter

indicates

relative

RF

output

voltage. Adjust the FINAL TUNING control

for

maximum

output and then

adjust

the

PRESELEC-

TOR

for

maximum

output indication.

AdjusttheRF

LEVEL

control

as

required

to keep the

S-meter

reading

below S9, while tuning the PRESELECTOR.

5-4.

MANUAL

CW

OPERATION.

Use the

procedure

as

given in

paragraphs

5-2

and 5-3. (If a key

is

plugged into the Key

jack,

J5,

it

must

be

closed.)

AdvancetheRFLEVELcontrol

to

just

below.

saturated

output.

Saturated

output

is

determined

in

the following

manner.

start

at

"0"

settingoftheRF

LEVEL con-

trol

and slowly

increase

the

control

(clockwise)

while

observing

the

S-meter.

Set

the

control

at

a

point

where

further

rotation

does

not

cause

an

ap-

preciable

increase

in

the

S-meter

reading.

This

is

saturated

output;

operate

slightly

below

this

level.

The

transmitter

is

now

ready

to key. To

receive,

it

is

necessary

to

turn

the

OPERATION

switch

to the STBY position.

5-5.

BREAK-IN

CW

OPERATION.

Use the tuning

procedure

as

given in

para-

graphs

5-2, 5-3,

and 5-4. Set the OPERATION

-10-

switch

to the

VOX

position. Adjust the

delay

control

(see

figure

12)

for

the

desired

drop-out

delay;

delay

increases

with clockwise

rotation.

Theunit

is

now

ready

for

break-in

CW

operation.

5-6.

PUSH-

TO-TALK

SSB

OPERATION

(MOX).

Use the

procedure

given in

paragraphs

5-2,

5-3,

and 5-4. Set

the

FUNCTION switch to the

de-

sired

sideband

(USB

or

LSB). SettheOPERATION

switch

to

MOX.

Depress

the

microphone

switch

(push-to-talk) and advance

the

MIC

GAIN

control

(while speaking into the microphone

in

a

normal

voice level) until the

S-meter

indicates

approxi-

mately

one-half the

level

shown

at

saturation.

The

MIC

GAIN

setting

is

not

critical,

because

of

the

action of the AALC

circuitry,

and may

be

advanced

slightly

beyond

this

point to

increase

compression.

Typical

settings

will

run

from

5 to 8.

5-7.

VOICE

CONTROLLED

SSB

OPERATION

(MOX).

For

voice

operated

transmission,

use

the

tuning

procedure

in

paragraphs

5-2, 5-3,

and 5-4.

Set the FUNCTION

switch

to the

desired

sideband

(USB

or

LSB). Set the OPERATION

switch

to the

VOX

position. Set

the

receiver

AF

GAIN

to

"0"

or

a low level. While speaking into the microphone,

advance the

VOX

gain

control

clockwise (see

figure

12) until the

VOX

relay

closes;

use

no

more

VOX

gain than

necessary.

Adjust the delay

control

for

the

desired

drop-out

delay; delay

time

increases

with clockwise

rotation.

It

may

be

necessary

to

re-

adjust

the

VOX

gain

slightly

because

of

interaction

between the

controls.

Adjust

the

receiver

AF

GAIN

to the

desired

listening

level. Advance the QT

(anti-trip)

control

(see figure 12) clockwise until

received

signals

do not

actuate

the VOXrelay. Use

no

more

anti-trip

gain than

necessary.

SECTION

VI

THEORY

OF

OPERATION

6-1.

GENERAL.

The

Model

SR-150

Transceiver

consists

of

a

double-conversion

receiver

and a

double-con-

version

transmitter.

The

VFO

circuitry,

the

heterodyne

crystal

oscillator

circuitry,

and

the

crystal

filter/IF

circuitry

are

common

to

both

the

transmitter

and

receiver_Refer

to

figure

8

for

a

block

diagram

of

the

equipment

and

to

figure

21

for

a

schematic

diagram_

6-2.

RECEIVER

CIRCUIT.

The

signal

at

the

antenna

is

applied

to

the

receiver's

RF

amplifier

stage

(VIA)

through

the

antenna

relay

located

in

the

transmitter

final

amplifier

section.

This

signal

is

amplified

and

then

fed

to

a

mixer

(V2),

where

it

is

mixed

with

the

signal

from

the

heterodyne

crystal

oscillator

(V8),

resulting

in

a

variable

IF

signal

of

6.0

MC

to

6.5

MC.

The

RF

amplifier

and

mixer

tuned

circuits

are

selected

by

the

BAND

SELECTOR

switch

and

tuned

by

the

PRESELECTOR

control.

The

variable

IF

signal

is

amplified

by

a

tunable

IF

amplifier

(V3A)

and

then

mixed

with

the

signal

from

the

VFO

(variable

frequency

oscillator),

V9,

in

the

receiver

mixer

(V4),

re-

sulting

in

a

second

IF

signal

of

1650 KC.

This

signal

is

amplified

by

the

first

1650-KC

IF

amplifier

(VI7A),

passed

through

the

crystal-

lattice

filter

(FLl),

and

applied

to

the

second

1650-KC

IF

amplifier

(V5A).

The

output

from

V5A

is

fed

to

the

product

detector

(V6)

where

it

is

mixed

with

the

correct

carrier

oscillator

output

to

present

the

desired

detected

sideband

signal

to

the

receiver

first

audio

amplifier

(VllA).

The

output

of

the

first

audio

amplifier

is

applied

to

the

audio

output

stage

(VI3)

and

then

to

the

speaker.

The

proper

sideband

is

selected

by

a

shift

in

the

VFO

frequency

coupled

with

a

selection

of

the

proper

carrier

oscillator

and

the

passage

of

the

signal

through

the

crystal-lattice

filter,

thereby

rejecting

the

undesired

sideband.

-

11

-

6-3.

TRANSMITTER

SECTION.

The

signal

from

the

microphone

is

applied

through

the

first

and

second

microphone

ampli-

fiers

(VI8A and

VI8B)

and fed to an audio

cathode

follower

(V3B).

The

output

of

V3B

is

presented

to

the

balanced

modulator

along with

the

selected

signal

from

the

carrier

oscillator

(VI0),

to

pro-

duce

a

double-

sideband

suppressed

carrier

signal.

The

balanced

modulator

output

signal

is

ap-

plied

to

the

first

1650-KC

IF

amplifier

(VI7A),

through

the

crystal-lattice

filter

(FLl)

which

attenuates

the

unwanted

sideband,

to

the

receiver

and

transmitter

mixer

(V2)

where

the

signal

is

added

to

the

VFO (V9)

output

signal.

The

sum

of

these

signals

(in

the

6.0-MC

to

6.5-MC

range)

is

then

amplified

by

the

tunable

IF

amplifier

(V3A)

and

fed

to

the

transmitter

mixer

(V7)

where

it

is

subtracted

from

the

heterodyne

crystaloscil-

lator

(V8)

signal.

The

output

of

the

transmitter

mixer

is

the

desired

operating

frequency

and

is

amplified

by

the

transmitter

driver

(VI6)

and

then

fed

to

the

transmitter

final

amplifiers

(V14

and

VI5).

The

selected

final

output

signal

is

applied

through

the

antenna

relay

to

the

antenna.

The

tuned

circuits

of

the

transmitter

mixer

and

transmitter

driver

are

selected

by

the

BAND

SELECTOR

switch

and

tuned

by

the

PRESELEC-

TOR

control,

while

the

final

amplifier

output

tuned

circuit

is

selected

by

the

BAND

SELECTOR

switch

and

tuned

by

the

FINAL TUNING

control.

The

Automatic

Audio

Level

Control

(AALC)

circuitry

operates

in

the

following

manner.

When

a

small

amount

of

flat-topping

occurs

in

the

final

amplifier,

an

audio

Signal

appears

on

the

ampli-

fier

bias

line,

in

proportion

to

the

amount

of

flat-

topping.

This

audio

signal,

which

is

not

present

without

final

amplifier

flat-topping,

is

coupled

to

the

AALC

amplifier

(V5B)

whose

output

is

recti-

fied

by

diodes

CR7

and

CR8.

The

resulting

DC

voltage,

which

is

in

direct

proportion

to

the

amount

of

flat-topping

occurring

in

the

final

amplifier,

is

connected

to

the

6.5-MC

to

6.0-MC

IF

amplifier

and

the

first

1650-KC

IF

amplifier

as

gain

control

bias.

"'11

.0'

t:

;0

?>

OJ

0-

n

,...

t:l

;:::;

Q'

'"

a

"

0

...

-I

a

"

In

n

..

<'

~

RECEIVER

I, R RECEIVER

12

TUNEABLE

I.

FIRST

AND

RECEIVER

13

1650KC

RF

IF

AMPLIFIER TRANSMITTER MIXER

IF

T MIXER AMPLIFIER AMPLIFIER

f2

X2

f3

X2

T

f3

I,

R

X,

ANTENNA X2

I

R~

X,

VFO

6f

~500KC

f,

HETERODYNE

CRYSTAL

OSCILLATOR

I,

X,

12

TRANSMITTER

f---<r-

TRANSMITTER

~

TRANSMITTER

FINAL -

AMPLIFIER

DRIVER

MIXER

f,

--+-

-BALANCE

MODULATOR

HETERODYNE

SYSTEM

BAND

FREQUENCY

HETERODYNE TUNEABLE

VFO

(X2)

CARRIAGE

OSCILLATOR

(X,)

OR

LAST

IF(I,)

(f,)

CRYSTAL

(X,) IF

(12)

UPPER

SB

LOWER

SB

UPPER

S8

80

3,5

4.0

10MC

6.5

1.6517

6.0

40

7.0 13.5MC

6.5

7.3 6.2

4.5483

4.5519

20

14.0

6.5

14.35 20.5MC

6.15

4.4983

4.5019

15

21.0

6.5

27.5MC

21.45

6.05

4.3983

4.4019

10

28.0

34.5MC

6.5

28.5

6.0

28.5

6.5

10

29.0

35.0MC

6.0

10

29.0 35.5MC

6.5

29.5

6.0

29.5

36.0MC

6.5

10

29.7

6.3

4.6519

4.6483

THE

HETERODYNE

SYSTEM

UTILIZES

TYPE

CR-23/U,

THIRD-OVERTONE,

SERIES

-RESONANT

CRYSTALS.

LOWER

SB

1.6481

f3

CRYSTAL

f3

SECOND

13

1650KC

LATTICE IF

FILTER AMPLIFIER

.--

X3

tX3

CARRIER

OSCILLATORS

X,

15

DC

VOICE

VOICE

,-

AMPLIFIER

->--

RECTIFIER

I-

->-

I

Af5

I

I

AUDIO

~

SECOND

f5

CATHODE

MICROPHONE

----<l-

FOLLOWER AMPLIFiER

SYMBOLS

r

f

~SIGNAL

FREQUENCY

(AMATEUR BANDS)

I~

~TUNEABLE

IF(6.5-6.0MC)

I

I,

~FIXED

IF

•

f.

~RECEIVER

AUDIO

f5

~TRANSMITTER

AUDIO

FIRST

MICROPHONE

AMPLIFIER

X,

~HETERODYNE

OSCILLATOR. 8

CRYSTALS

(I

PER

BAND)

X.

~VFO(61~500KC)

X,

~CARRIER

OSCILLATOR. 2 CRYSTALS (UPPER S8.

LOWER

S81

SIGNAL

PATH

LEGEND

-{>-

TRANSMITTER SIGNAL

-.-

RECEIVER SIGNAL

~

COMMON

SIGNAL

...:;.- OSCILLATORS

-;.-

VOICE

RELAY

MIXER FUNCTIONS

MIXER

IN

RECEIVE

RECEIVE and TRANSMIT f,

Xl;:;

f2

OUTPUT

RECEIVER

f2.

X2-=

f3 OUTPUT

TRANSMITTER

NOT

OPERATIVE

---.

___________

~

_

______'=_'_'__=__-o-

IN

TRANSMIT

f,+X2~

12

OUTPUT

NOT OPERATIVE

XI-f2~f,

OUTPUT

15

PRODUCT

DETECTOR

tf.

RECEIVER

FIRST

AUDIO

tf

•

RECEIVER SPEA

KER

AUDIO

~

OUTPUT

,

yf.

I

ANTI-TRIP

RECTIFIER

I

YDC

I

RELAY

CONTROL

AMPLIFIER

MICROPHONE

SECTION

VII

SERVICE

DATA

7-1.

COVER

AND

CHASSIS

REMOVAL.

A.

TOP COVER REMOVAL. -

Loosen

the

four

top-cover

screws

1/4

turn

only and

remove

cover.

To

replace

cover,

tighten

cover

screws

1/4

turn

only,

so

that

the

plastic

latch

nuts

will

not

be

damaged.

B. BOTTOM COVER REMOVAL. -Remove

the four

bottom

cover

screws

located

in the feet,

and

remove

the

cover.

When

replacing

the

bottom

cover,

make

certain

that

the

grounding clip on the

cover

engages

properly

at

the final

amplifier

shield

partition.

C.

CHASSIS

REMOVAL. -To

remove

the

chassis

from

the cabinet,

it

is

first

necessary

to

remove

the bottom

cover

(see

paragraph

7-1B).

Remove the four cabinet

screws

at

the bottom

near

the

cabinet

feet and

carefully

slide

the

chassis

and

panel

assembly

out

from

the

front

of the cabinet.

7-2.

TUBE

AND

DIAL

LIGHT

REPLACEMENT.

Access

to the

dial

light and

all

tubes

may

be

obtained by

removing

the top

cover

of the cabinet.

See

paragraph

7-1A.

7-3.

TROUBLESHOOTING.

In

the

design

of

this

transceiver,

full

con-

sideration

was

given to keep maintenance

prob-

lems

at

an absolute minimum. As

in

all

well-

designed

electronic

equipment, maintenance and

repair

problems

are

generally

confined to

the

checking and

replacement

of

tubes

and

semi-

conductor

devices

which

may

become

defective.

Malfunctions of

this

nature

are

usually

easily

isolated

and

corrected.

However,

it

is

entirely

possible

that

a

more

obscure

malfunction

may

arise.

In

this

event, only thoroughly

trained

technical

personnel

should

attempt

to

service

eqUipment of

this

complexity.

A

recommended

aid

to troubleshooting the

Model SR-150

Transceiver

is

ageneral-coverage

receiver

which can

be

used

to

provide

a quick

check

on the

various

oscillator

circuits

within

the SR-150. A

lead

connected to the antenna

of

this

receiver,

when

placed

in

the

proximity

ofthe

oscillator

tube in the

circuit

to

be

checked,

can

determine

the

presence

or

absence

of

signal

from

the

stage

in

question.

-

13

-

If

a malfunction

occurs

when

operating

on

one

particular

band

and/or

mode of

operation,

the

unit

should

be

checked on

all

other

bands

and

in

all

other

modes

of

operation

to

isolate

the

difficulty. A

careful

study of the block

diagram

(figure

8)

will give a quick clue

as

to which

tubes

should be checked. The voltage and

resistance

charts

(figures 9 and 10) and

schematic

diagram

(figure 21) will

also

aid

in

isolating

and

correcting

a malfunction.

7-4.

SERVICE

AND

OPERATING

QUESTIONS.

For

further

information

regarding

operation

or

servicing

of the Model SR-150

Transceiver,

contact

the

dealer

from

whom the

unit

was

pur-

chased.

The

Hallicrafters

Company

maintains

an

extensive

system

of Authorized

Service

Centers

where

any

required

service

will

be

performed

promptly

and efficiently

at

no

charge

if

this

equipment

is

delivered

to the

service

center

within

90

days

from

date of

purchase

by the

original

buyer

and

the

defect

falls

within the

terms

of the

warranty.

It

is

necessary

to

present

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 below.

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

Hallicrafters

Company will

not

accept

responsi-

bility

for

unauthorized

shipments.

The

Hallicrafters

Company

reserves

the

privilege

of making

revisions

in

current

pro-

duction of equipment and

assumes

no obligation

to

incorporate

such

revisions

in

earlier

models.

<

!!..

Q

<Q

<D

n

:r-

Q

;::.

o

'"

~

o

"

'"

o

"

III

VOLTAGE

REGULATOR

VIZ

---~

OA2

FINAL

AMPLIFIER

VI5

12GW6

/12D06B

FINAL AMPLIFIER

VI4

12GW6

/12DQ6B

TRANSMITTER DRIVER

VI6

128Y7

RECEIVER

RF

AMPLIFIER

100

KC

CALIBRATE OSCILLATOR

VI

6AZS

HETERODYNE

OSCILLATOR-

CATHODE FOLLOWER

VS

12AT7

H 0

12.6

AUDIO

OUTPUT

VI3

6A05A

FIRST a

SECOND

MICROPHONE AMPLIFIER

VIS

A-8

12AX7

RECEIVER / TRANSMITTER

FIRST MIXER

V2

-----~

12BA7

H

12.6

REc.tST

AUDIO-AGC DET-VOX

DIODE

-aT

DIODE

VII-A-B-C-D

6TSA

RELAY AMPLIFIER /

vox

AMPLIFIER

V19-

A-

8

12AT7

NOTES:

I.

* VARIES WITH

SETTING

of

RF

GAIN

CONTROL.

2.

'**

CAL

SWITCH

ON.

--

3.

iE*iVARIES

WITHBAND

SELECTOR

SETTING.

4.

****

VARIES

WITH RF

LEVEL

CONTROL.

5.

*****

DEPENDS

ON~

ACTIVITY

(NOMINAL

VOLTAGE

INDICATED)

6,

UNLESS

OTHERWISE

SPECIFIED,THE

FIRST

VOLTAGE

LISTED

IS

FOR

RECEIVE

CONDITION AND

THE

SECOND IS FOR

TRANSMIT

CONDITION.

1~

ALL

MEASUREMENTS

ARE

MADE

FROM

TUBE

SOCKET

PIN TO CHASSIS,

PRODUCT

DETECTOR

V6

12BE6

CARRIER OSCILLATOR / BFO

VIO

12AT7

t~~tk~o

*****

,

,,"

,_",,-

t~~ti.;

H***

SECOND

1650

KC

IF AMPLIFIER

AALC AMPLIFIER

}.oI-----------

V5

-A-B

VFO-CATHODE FOLLOWER

V9

6EAS

H

6.0-6.5MC

IF AMPLIFIER

AUDIO CATHODE FOLLOWER

'-----

V3

6EAS

12.6

6EAS

RECEIVER MIXER

V4

12BA7

. .

=,-,-,,"2-,-,,2c'.'IIC"O~

13

(TIE

POINT)

260

FIRST

1650

KC

IF AMPLIFIER

METER

AMPLIFIER

VI7-A-B

6EAS

~

..

::!.

'"

Q

:0

n

..

n

=-

Q

;.:.

VOLTAGE REGULATOR

VI2

-----,

OA2

FINAL

AMPLIFIER

VI5

12GW6 f

12D06S

FINAL AMPLIFIER

VI4

12GW6

/I2D068

TRANSMITTER DRIVER

VI6

12Sn

RECEIVER RF

AMPLIFIER-

100

KC

CALIBRATE OSCILLATOR

VI

6AZ8

HETERODYNE

OSCILLATOR-

CATHODE FOLLOWER

V8

12AT7

AUDIO OUTPUT

VI3

6A05A

FIRST S

SECOND

MICROPHONE AMPLIFIER

VIS-A-

8

12AX7

RECEIVER f

TRANSITTER

FIRST

MIXER

V2

____

.-.J

128A7

REC.IST AUDIO-AGe DET-VOX

DIODE-aT

DIODE

VII'A'B-C-D

6T8A

RELAY

AMPLIFIER

f

vox

AMPLIFIER

VI9-A-

B

IZAT7

6.0-6.5MC

IF

AMPLIFIER

AUDIO

CATHODE FOLLOWER

V3

6EAS

NOTES'

I. *

VARIES

WITH

RF

GAIN

CONTROL.

2.

UNLESS

OTHERWISE

SPECIFIED,

THE

FIRST

RESISTANCE

LlSTE'O

IS FOR

RECEIVE

CONDITION

AND

THE

SECOND

IS

FOR

TRANSMIT

CONDITION.

3.

ALL

MEASUREMENTS

ARE

MADE

FROM

TUBE

SOCKET

PIN

TO

CHASSIS.

4. CONTROL

SETTING

OPERATION

-

STBY

BAND

SELECTOR

80

M

VOX

GAIN

CCW

(MIN)

aT

GAIN CCW

(MIN)

FUNCTION

-cw

AFGAIN-Q

DELAY

CCW

(MIN)

POWER

PLUG

DISCONNECTED

PRODUCT DETECTOR

V6

128E6

56K

47K

CARRIER OSCILLATOR I BFO

VIO

12AT7

21 K

SECOND

1650

KC

IF

AMPLIFIER

AALC AMPLIFIER

V5

-A-B

6EAS

RECEIVER MIXER

V4

12BA7

FIRST 1650

KC

IF

AMPLIFIER

METER

AMPLI FIER

VI7-A-S

6EAS

SECTION

VIII

ALIGNMENT

PROCEDURE

WARNING

LETHAL

HIGH

VOLTAGE

IS

PRESENT

WITHIN

THIS EQUIP MENT. BE CARE-

FUL

WHEN

INSTALLING THE UNIT,

WHEN

MAKING

BIAS

ADJUSTMENTS,

AND

WHEN

PERFORMING CHECKS

UNDER

THE

CHASSIS.

8·1.

GENERAL.

The Model SR-150

Transceiver

has

been

accurately

aligned and

calibrated

at

the

factory

and, with

normal

usage,

will not

require

realign-

ment

for

extended

periods

of

time.

Service

or

replacement

of a

major

component

or

circuit

may

require

subsequent

realignment,

but

under

no

cir-

cumstances

should

realignment

be

attempted

unless

the malfunction

has

been

analyzed and

definitely

traced

to

miS-alignment. Alignment

should only

be

performed

by

persons

experienced

in

this

work,

using

the

proper

test

equipment.

NOTE

Do

not

make

any

adjustments

unless

the

operation

of

this

transceiver

is

fully

under stood and adequate

test

equipment

is

available.

Refer

to

figures

11

and 12,

the top and bottom views of

the

trans-

ceiver,

for

thelocations of

all

adjustments.

8·2.

EQUIPMENT

REQUIRED.

1.

RF

Signal

Generator;

Measurements

Corporation,

Model 65B

or

an equivalent

signal

generator

having up to 1 volt output

at

an impedance of

70

ohms

or

less

(a 100

micro-microfarad

DC

blocking

capacitor

must

be

placed

in

serieswiththeRF

lead).

2.

A Vacuum Tube Voltmeter (VTVM);

Hewlett-Packard

Model 410B,

or

equiva-

lent

VTVM having an

RF

probe

good to

30

MC.

3. A Dummy. Load;

50

ohms

non-reactive,

rated

at

100 watts.

Bird

Wattmeter

or

equivalent. The load

may

be

made up of

carbon

resistors

totaling 100

watts

diSSipation.

4. A

DC

Voltmeter having a 2.5-volt

or

3.0-volt

scale

for final

plate

current

measurements

when

using

the

Model

PS-150-120

Power

Supply

or

a 0-300

MA

DC

milliammeter

when

using

the

Model

PS-150-12

Power

Supply.

·16·

5.

A

general-coverage

receiver

covering

the frequency

range

from

3

MC

to

30

MC

with a 100-KC

calibrator.

8·3.

BIAS

ADJUSTMENT.

The final

amplifier

bias

must

be

properly

set

before

any extensive

checks

are

made on

the

transmitter

portion

of the SR-150.

When

using

the

ACpower supply (pS-150-120),

proceed

as

follows. Before

turning

the

transceiver

on, connect a

DC

voltmeter

to

the

two tip

jacks

on

the

power supply (see

figure

14),

positive

to

red

and negative

to

blue. Set

the

voltmeter

on a low

scale

(2.5 volts

or

3.0 volts).

There

is

a

10-ohm

resistor

across

the

tip

jacks

so

that

the

meter

will

indicate 1 volt

for

100

MA.

Set

the

OPERATION

switch

to STBY and allow

the

unit

to

warmup about 5 minutes. Then

set

the

FUNCTION

switch

to

USB

or

LSB,

MIC

GAIN

to

"0",

and OPERATION switch

to

MOX.

Plug

in a

microphone and

press

the

microphone switch.

Adjust BIAS ADJ control, R206 on

the

power supply,

for

0.7

volt

(70

MA

plate

current

on

voltmeter).

When

using

the

DC

power supply (PS-150-12)

the

high voltage (red/white)

lead

must

be

discon-

nected

from

the

power supply

terminal

strip

(pin

1)

and a

DC

milliammeter,

having full-scale

deflec-

tion

of not

less

than 300

MA,

connected between the

lead

and the high voltage

terminal

on the power

supply. Follow

the

procedure

outlined in

the

pre-

ceding

paragraph

and

set

the

BIAS ADJ

control,

R308 on

the

power supply,

for

70

MA.

8·4.

IF

ALIGNMENT

(1650

KC).

Connect the

signal

generator

to

pin

7 of V 4 and

tune

it

to 1650

KC.

Set

the

OPERATION switch

to

STBY and the FUNCTION switch

to

USB

or

LSB.

Increase

the

signal

generator

output until the

S-

meter

shows a

smallindication

and

rock

the

signal

generator

frequency to

the

approximate

center

of

the

crystal-filter

passband. The output

level

may

be

monitored

at

the

speaker

terminals

with an

ap-

propriate

output

meter.

A VTVM may

be

used

to

monitor

the

AGC

level

or

the

S-meter

maybe

used

to

indicate

IF

output.

Adjust the top and bottom

slugs

of T3 and

the

slug

of T6

for

maximum. Reduce

the

signal

gener-

ator

output to keep the

S-meter

reading

below S9,

thus,

preventing

possible

overload

and

inaccurate

adjustments.

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8-5.

CRYSTAL

FILTER

ALIGNMENT.

Because

of

the

specialized

techniques

and

test

equipment

required,

it

is

recommended

that

realignment

of

the

crystal-filter

termination

coils,

L14 and L15,

be

handled

through

The

Hallicrafters

Company

Service

Department.

How-

ever,

the

operation

of

the

filter

can

be

checked

out

as

follows

to

determine

whether

or

not

the

filter

requires

realignment.

1. Tune

the

transmitter

into

a

50-ohm

load

and

switch

to

lower

sideband

(LSB).

2. With an audio

generator

connected

to

the

microphone

input

at

1000

CPS,

adjust

the

transmitter

output

for

S9

on

the

S-meter.

3.

Set

the

audio

generator

frequency

to

600

CPS

and

the

transmitter

output

should

drop

no

more

than

approximately

3 DB,

or

to

S7

on

the

S-meter.

4.

Set

the

audio

generator

frequency

to

2700

CPS

and

the

transmitter

output

should

drop

no

more

than

approximately

3 DB,

or

to

S7

on

the

S-meter.

If

the

response

of

the

transmitter

does

not

meet

these

requirements,

the

SR-150

Transceiver

should

be

returned

for

filter

realignment.

8-6.

IF

ALIGNMENT

(6.0

TO

6.5

MC).

Connect

the

signal

generator

to

pin

2

of

V2.

Set

the

OPERATION

switch

to

STBY

(receive)

and

tune

the

VFO (TUNING

control)

to

the

low-

frequency

end

of

the

dial

(black

0,

red

500).

Set

the

Signal

generator

to

6.5

MC

and

adjust

trim-

mers

C32D

and

C32E,

located

on

the

top

of

the

center

and

rear

sections

of

the

VFO

TUNING

capacitor,

for

maximum

receiver

output.

Keep

the

signal

level

low

to

prevent

overload.

Set

the

Signal

generator

to

6.0

MC

and

tune

the

VFO

to

the

high

end

of

the

dial

(black

500

and

red

1000).

Tune

the

slugs

of

the

IFtransformers,

T1

and

T2,

for

maximum

output,

reducing

Signal

generator

output

as

required

to

prevent

overload.

Repeat

adjustments

of

C32D, C32E,

T1,

and

T2

until

tracking

is

accomplished.

8-7.

RECEIVER

RF

ALIGNMENT.

Connect

the

signal

generator

to

the

antenna

jack,

J1,

at

the

rear

of

the

chassis.

Set

the

antenna

switch

to

the

receive

only (up)

position.

Set

the

OPERATION

switch

to

STBY

(receive),

RF

GAIN

to

maximum,

AF

GAIN

as

reqUired,

BAND

SELECTOR

to

29.5,

and

the

PRESELECTOR

to

slightly

above

the

high-frequency

or

right-hand

edge

of

the

10-meter

segment.

-

19

-

Tune

the

signal

generator

to

30.0

MC

and

tune

the

VFO

to

the

high

end

(black

500). Tune

the

signal

in and

adjust

trimmers

C7D and C7E

for

maximum

output,

reducing

Signal

generator

output

as

required.

Tune

the

signal

generator

to

28.0 MC.

Set

the

PRESELECTOR

to

the

low-

frequency

edge

of

the

10-meter

segment,

the

BAND

SELECTOR

to

28,

and

tune

the

VFO to

the

low

end

of

the

dial

(black

0).

Tune

the

signal

in

and

adjust

the

slugs

of

coils

L5

and L7

for

maximum

output.

Repeat

the

adjustments

of

C7D,

C7E,

L5,

and

L7

until

tracking

is

accomplished.

Tune

the

Signal

generator

to 21.3 MC

and

set

the

BAND

SELECTOR

to

21. Tune

the

VFOto

300

on

the

dial.

Tune in

the

signal

and

adjust

the

slugs

of

coils

L1

and

L8

for

maximum

output.

Tune

the

signal

generator

to

14.3

MC and

set

the

BAND

SELECTOR

to

14. Tune

the

VFOto

300

on

the

dial.

Tune

in

the

signal

and

adjust

the

slugs

of

coils

L2 and L9

for

maximum

output.

Tune

the

signal

generator

to

7.3 MC

and

set

the

BAND

SELECTOR

to

7. Tune

the

VFO to 300

on

the

dial.

Tune in

the

signal

and

adjust

the

slugs

of

coils

L3

and

LIO

for

maximum

output.

Tune

the

Signal

generator

to

3.8

MC

and

set

the

BAND

SELECTOR

to

3.5. Tune

the

VFO

to

300 on

the

dial.

Tune

in

the

signal

and

adjust

the

slugs

of

coils

L4

and

Lll

for

maximum

output.

8-8.

6.S-MC

TRAP

ADJUSTMENT.

With

the

Signal

generator

connected

to

the

antenna

jack

(J1),

at

the

rear

of

the

chassis,

tune

the

signal

generator

to

6.5 MC.

Set

the

BAND

SELECTOR

to

7.0

and

tune

the

VFO to

the

low

end

of

the

dial

(black

0).

Tune

the

signal

in

and

adjust

the

slug

of

coil

LI2

(6.5-MC

trap)

for

minimum

output.

NOTE

A

slight

readjustment

of

the

40-meter

RF

coil

slug,

LIO,

may

be

required

after

the

6.5-MC

trap,

L12,

is

tuned.

8-9.

DRIVER

PLATE

CIRCUIT

RF

ALIGNMENT.

After

the

final

amplifier

bias

has

been

properly

adjusted

(see

paragraph

8-3)

and

the

receiver

alignment

has

been

completed

(see

paragraphs

8-4

through

8-8),

the

driver

plate

circuit

coils

may

be

aligned.

Connect

a

50-ohm

to

52-ohm

resistive

load

to

the

antenna

jack,

J2.

Set

the

OPERATION

switch

to

STBY

(receive)

and

the

FUNCTION

switch

to

CWo

Set

the

BAND

SELECTOR

to

28.5

and

the

VFO

to

300 on

the

dial.

Set

the

FINAL

TUNING to the

10-meter

segment.

Turn

the CAL

switch

to

ON

and tune

the

calibrator

signal

in

at

28.8 MC. Adjust the

PRESELECTORfor

maximum

S-meter

indication. Set the OPERATION

switch

to

MOX

and advance

the

RF

LEVEL

control

until

a

small

indication

is

noted

on

the

S-meter.

Adjust

the FINAL TUNING

for

maximum

output.

Do

not

change the

setting

of

the

PRESELECTOR. Adjust

the

slug

of

coil

L37

for

maximum

output

(S-meter

indication),

reducing

the

setting

of the

RF

LEVEL

control

as

required

to

keep

the

output

at

a low

value

to

prevent

flat-topping.

Repeat

the

above

paragraph

for

each

band,

referring

to

the tuning

chart

for

the

appropriate

settings

and

adjustments.

TRANSMITTER

DRIVER

TUNING

CHART

FINAL TUNING

PRESELECTOR

Adjust

Coil

Band

Adjust

for

Maximum

Tuned

In

Receiver

on

for

Maximum

Output

Output

100-

KC

Marker

in

Transmit

29.5

10 --

29.0

10 --

28.5

10

28.8

MC L37

28.0

10 -

21.

0 15 21. 3 MC

L38

14.0

20

14.3

MC

L39

7.0

40

7.3

MC

L40

3.5

80

3.8

MC

L41

8-10.

FINAL

AMPLIFIER

NEUTRALIZATION.

The final

amplifier

may

be

neutralized

as

follows. Tune the

transmitter

up

on

21.3

MC

(15-meter

band) in

CW

function.

This

should

be

done with a

meter

in

the

high

voltage

line

to

read

final

plate

current.

(See

paragraph

8-3

for

meter

insertion.)

Adjust the

RF

output

level

to about

50

volts

or

about

30

on the

S-meter

with

the

RF

LEVEL

control.

Carefully

tune

the FINAL TUNING

and

observe

the

plate

current

dip and the output

voltage

peak.

If

both

occur

at

the

same

setting,

the

amplifier

is

neutralized.

If

both

do not

occur

together,

adjust

the

neutralizing

capacitor,

C139,

in

small

increments

(1/4

to

1/2

turn)

until

neutralization

is

accomplished.

8-11.

CARRIER

BALANCE.

Tune the

transmitter

up on 3.8

MC

(80-

meter

band)

in

CW

function into a dummy load.

Switch to

upper

sideband

(USB on FUNCTION

switch) and

adjust

capacitor,

C164, and

poten-

tiometer,

R131,

for

minimum

RF

output.

An

RF

voltmeter

with a

one-volt

scale

at

the

dummy

load

can

be

used

to

indicate

minimum

output.

If

a

voltmeter

is

not

available,

a

receiver

tuned to

the

carrier

frequency

may

be

used

to

indicate

carrier

balance.

-

20-

8-12.

BFO

/

CARRIER

OSCILLATOR

OUTPUT

TRANSFORMER

ALIGNMENT.

Connect an

RF

voltmeter

to

pin

7 of

V6

(product

detector).

Adjust

the

slug

of T4

for

approximately

7.0

volts

at

the

product

detector

(grid

3).

This

adjustment

must

be

made

on the

high

frequency

side

of

the

peak

setting

of the

transformer;

that

is,

turning

the

slug

counter-

clockwise

from

peak

output.

NOTE

This

adjustment

should

not

be

attempted

unless

T4

has

been

replaced,

as

it

has

an

effect

on

carrier

oscillator

frequency.

8-13.

BFO

/

CARRIER

OSCILLATOR

FREQUENCY

ADJUSTMENT.

The

BFO/

carrier

oscillator

frequency

has

been

accurately

set

at

the

factory.

The

settings

of the two

warping

trimmers,

C103 and C106,

should

not

be

changed.

In

the

event

that

replacement

of one

of

the

VFO/carrier

crystals,

Y10

or

Yll,

is

required,

the VFO

corrector

trimmer

may

require

re-

adjustment.

See

paragraph

8-14

for

procedure.

8-14.

VFO

CORRECTOR.

The

VFO

corrector

trimmer,

C96,

shifts

the VFO

frequency

approximately

3600 CPS to

correct

for

the

difference

in

frequency

between

the

upper

and

lower

sideband

BFO/

carrier

crys-

tals.

The

trimmer

is

switched

into the VFO

circuit

in

upper

sideband.

It

is

set

in

the

following

manner.

With the

receiver

in

lower

Sideband,

tune

the

100-KC

calibrator

Signal

to

zero

beat

at

3.8 MC. Switch to

upper

sideband

and

there

should

be

less

than

a 5 CPS change in

frequency.

If

the

change

is

greater,

carefully

adjust

the

trimmer

(C96,

on

the VFO

assembly)

until

the

frequency

change

between

sidebands

is

less

than

5 CPS.

8-15.

CRYSTAL

CALIBRATOR

ADJUSTMENTS.

The

crystal

calibrator

trimmer

is

used

to

set

the

internal

100-KC

crystal

exactly

to

fre-

quency by

comparison

to

a

signal

transmitted

by

WWV.

With

another

receiver,

tune-in

WWV

and

connect

a

lead

between

the

SR-150 antenna

connector

and the

antenna

connection

of

the

external

receiver.

Turn

the

calibrator

on

in

the

SR-150 and

carefully

adjust

the

calibrator

trim-

mer,

C15,

until

the 100-KC

oscillator

harmonic

is

in

zero

beat

with

WWV.

NOTE

This

adjustment

should

be

made

only

during

periods

of

NO

modulation on

station

WWV.

8-16.

VFO

CALIBRATION

ALIGNMENT.

If

the

electrical

index

check

at

the

100-KC

check

points

on

all

bands

shows

that

the

calibration

marks

consistently

fall

to

one

side

of

the

pointer,

a

trimmer

adjustment

is

indicated.

(This

will

be

necessary

only

if

the

calibration

is

beyond

tuning

range

of

the

CAL ADJ

control.)

Proceed

as

follows:

a.

Adjust

the

TUNING

control

until

the

dial

is

at

500 (3.5 MC).

b. Set

the

BAND SELECTOR

at

3.5,

FUNC-

TION to USB, and

CAL-OFF

to CAL.

c.

Carefully

adjust

trimmer

C87

in

very

small

increments

until

a

zero

beat

is

heard.

Care

should

be

exercised

to

make

sure

that

the

correct

100-KCbeatnoteis

tuned-in

with

the

trimmer.

d. Check

across

the

dial

at

the

100-

KC

check

points.

If

the

frequency

error

is

less

than

3000 CPS,

the

calibration

is

within

acceptable

limits.

If

the

error

at

the

high-frequency

end

ofthe

dial

(4.0MC)

is

greater

than

3000 CPS,

the

VFO

may

require

a

coil

adjustment

in

addition

to

the

trimmer

adjustment.

8-17.

CONDITIONS

REQUIRING

COIL

AND

TRIMMER

ADJUSTMENT.

If

the

dial

error

progressively

increases

in

the

same

direction

with

the

high-frequency

end,

running

out

more

than

3000 CPS,

at

this

end,

both

L27 and C87

should

be

adjusted.

-21-

a.

Adjust

the

TUNING

dial

to 1000 (4.0

MC)

and

adjust

L27 to

zero

beat.

b.

Adjust

the

TUNING

dial

to 500 (3.5

MC)

a!1d

adjust

C87 to

zero

beat.

c.

Repeat

steps

a and b

until

both

3.5

MC

and 4.0

MC

are

exactly

on

frequency.

d.

Check

across

the

dial

at

the

100-KC

points.

If

the

frequency

error

is

less

than

3000 CP

S,

the

calibration

is

within

accep-

table

limits.

If

the

error

is

in

excess

of

3000

CPS

at

any of

the

mid-points,

with

the

end

limits

at

zero

error,

the

VFO

capacitor

(C32A)

should

be

knifed.

This

operation

should

not

be

attempted

by

other

than

qualified

personnel

thoroughly

fami-

liar

with

the

technique.

8-18.

S-METER

ZERO

ADJUSTMENT.

Periodically

the

meter

in

the

SR-150

should

be

zero

calibrated

to

maintain

accuracy.

To

accom-

plish

this

proceed

as

follows:

1. Set

the

OP ERATION

switch

to STBY

(Receive),

the

FUNCTION

switch

to LSB,

and

the

RF

GAIN

control

fully

counter-

clockwise.

2. Allow

the

unit

about15minutes

to

warm

up.

3.

Adjust

potentiometer

R120

until

the

meter

pointer

is

directly

over

the

line

on

the

left

side

of

the

dial

scale.

R120

is

located

on

the

left

Side of

the

chassis,

see

figure

12.

SECTION

IX

AC

POWER

SUPPLY

MODEL

PS-150-120

092·017846

Figure

13.

Hol/ieroffers

Model P$·150·120

AC

Power Supply.

9·1.

DESCRIPTION.

Hallicrafters'

Model

PS-150-120

Power

Sup-

ply

is

a

complete,

self-contained

power

unit

designed

to

permit

Hallicrafters'

Model

SR-150

Transceiver

to

be

operated

from

a

nominal

117-volt

AC

source.

This

power

supply,

through

a

12-pin

power

plug

and

cable

at

the

rear,

will

furnish

all

the

supply

voltages

necessary

for

optimum

performance

of

the

SR-150.

Hallicrafters'

Model

PS-150-120

operates

from

a

105-volt

to

125-volt,

50

/

60-cycle,

AC

source.

The

power

supply

also

contains

a

3.2-

ohm

permanent-magnet

type

speaker

which

con-

nects

to

the

SR-150

through

the

12-pin

power

plug

and

cable.

WARNING

LETHAL

HIGH VOLTAGE

IS

PRESENT

WITHIN THIS EQUIP MENT.

BE

CARE-

FUL

WHEN INSTALLING

THE

UNIT,

MIEN

MAKING BIAS ADJUSTMENTS,

AND

MIEN

PERFORMING

CHECKS UN-

DER

THE

CHASSIS.

9·2

.

BIAS

ADJUSTMENT

.

After

connecting

the

power

supply

to

the

SR-150 and

to

the

proper

power

source,

the

transmitter

bias

must

be

adjusted

to

achieve

optimum

performance

of

the

transceiver.

1.

Connect

a

voltmeter

to

the

tip

jacks

at

the

top

rear

of

the

power

supply

chassis.

(Connect

the

positive

lead

from

the

meter

to

the

red

jack.)

2.

Turn

the

Model

SR-150

on: OPERATION

switch

to

MOX- FUNCTION

switch

to

USB.

·22·

3. With no Signal

applied

to

the

transmitter

and

the

microphone

button

depressed,

adjust

the

BIAS ADJ

potentiometer,

R206

on

the

rear

of

the

power

supply

chassis,

for

0.7

volt

on

the

meter.

4.

Disconnect

the

meter.

This

adjustment

is

not

necessary

each

time

the

SR-150

is

used;

however,

it

should

be

checked

periodically

and

whenever

the

transmitter

driver

and

/o

r

final

amplifier

tubes

are

replaced.

9·3.

CHASSIS

REMOVAL.

To

remove

the

PS-150-120

chassis

from

its

cabinet,

remove

the

six

hex-head

screws

on

the

bottom

(four

are

in

the

feet

and two

are

at

the

center

front

and

rear)

and

disconnect

the

speaker

leads

on

the

top

rear

of

the

chassis.

The

chassis

will

slide

out

the

rear

of

the

cabinet.

REPAIR

PARTS

LIST

Schematic

Ha

llicraft

e

rs

Sy

mb

ol

Description

Part

Number

C201 ,202

Capacitor,

0.01

fJ.

F , 1400V,

047-200752

Ceramic

Dis

c

C203 Ca

pacitor,

0.001

fJ.

F,

3000V,

047-100397

Ceramic

Dis

c

C204A&B

Capacitor,

2 x 30

fJ.

F, 350V,

045-000902

Electr

oly

ti

c

C205,206

Capacitor

,

80

fJ.

F ,

450V

,

045-00036

9

Electrolytic

C207,208

Capacitor,

20

fJ.

F,

250V, 045

-00090

3

Electrolytic

CR201,202,

Diode

,

Silicon,

T

ype

1N3487

027-000314

203,204

CR205

Diode

, 1N3194

019-002769

F201

Fuse,

3

Amperes

, 125

Volts,

039-100

390

3AG, (Sl

ow

Bl

ow)

J201

Connector,

Power

(l2-pin)

010·002613

L201

Choke

,

Filter

056-000595

L202

Choke,

Filter

056-000585

L203

Choke,

Filter

056-000501

R201 ,202 R

es

istor

, 15K

Ohms,

10%, 10

wa

tts

,

445-032153

Wir

e Wound

R203

Resistor

, 100

Ohms,

10%,

1/

2

watt,

451-252101

Carbon

R204 Re

sistor

, 4700

Ohms

, 10%, 2

watts,

451-652472

Carbon

R205

Resistor,

22K

Ohms,

10%, 1

watt,

451-352223

Carbon

R206

Resistor,

Variable,

10K

Ohms,

025-001833

20%, 3/ 4

watt,

Bi

as Adj.

R207

Resistor

, 10

Ohms

, 5

%,

1

watt,

451-351100

Carbon

T201

Transformer,

Power

052-001007

TP201

Tip

J

ack,

Red

036-000304

TP202

Tip

Jack

,

Blue

036-000307

Baffle

Board

078-001711

Baffle,

Felt

014-000476

Cabinet

066-003437

Ca

bl

e (9-

conductor)

087-007657

Cable

Assembl

y

087-007648

Cable

Clamp

076-202746

Fo

ot

,

Plastic

(4)

016-201072

Front

Panel

068-001263

Fuse

Holder

006-200837

Line

Cord

087-104690

Lock

,

Line

Cord

076-100953

Rear

Panel

068-001404

Speaker

, 4 x 6

inch

PM,

085-000218

3.2

Ohms

C201

0 .

01

1400V

F201

3AMP

S

LO

8LO

C202

0 .

01

1400V

117

VAC

T201

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

50

/

60

CYCLES

o

o o

Figure 14. Top

Chassis

View of

Mod

e l PS·

150·/20

AC

Power Suppl

y.

L201

C204

A

CR202

IN3487

30

T

350V

....

-

--1---'

RED

8LUE

TP2

0 1

TP202

R20 3

CR204

I

N3487

1

00

R204

L203

C205

80

450V

-

C20

6

80

CR50 S 1/2W

-180V

4.7K,

2W

·125V 6 .

5MA

IN3194

C207

20

+

250V

'---'=,;r=-:.....-

'VY'y-J

R206

10K

BIAS

AD

J.

12

.

6V

AC

4.5AMPS

II

80

NOTES : UNLESS OTHERWI

SE

STATED :

I.

ALL

CAPAC

ITORS S

HOW

N

IN

UFo

2.ALL RESISTORS S

HOWN

IN OHMS,

10%

.

3.

ALL

VO

LTAGES NOMINAL .

Figure IS . Schematic Diagram of Model PS·150·/20

AC

Power Supply .

.

23

·

R206

BIAS

ADJ

TP202

F201

4

10

c::::=:J

092·017845

089·0030

11

B

SECTION

X

DC

POWER

SUPPLY

MODEL

PS-150-12

092·017844

Figure

16.

Hal/icrafters

Model

PS·150·12

DC

Power Supply.

10·

1.

DESCRIPTION.

Hallicrafters'

Model

PS-150-12

Power

Supply

is

a

complete,

compact,

self-contained

power

unit

designed

to

permit

Hallicrafters'

Model

SR-150

Transceiver

to

be

operated

from

a

nominal

12-volt

DC

source.

This

power

supply

is

shipped

for

operation

in

conjunction

with

a

negative-

grounded

power

source.

However,

it

is

operable

with

a

positive

grounded

source

by

changing

two

internal

soldered

connections

as

described

in

figure

18.

The

Model

PS-150-12

Power

Supply,

through

interconnection

with

the

Model MR-150 Mobile

Mounting

Rack,

will

furnish

all

the

supply

voltages

necessary

for

optimum

performance

ofthe

SR-150.

All

connections

are

made

to

the

power

supply

through

two

terminal

strips

on

one

side

of

the

unit

(see

figures

5 and 17).

The

two-connector

strip

(TS301)

is

used

for

connection

to

the

12-volt

source

through

the

wires

supplied.

The

seven-connector

strip

(TS302)

is

used

to

supply

the

operating

volt-

ages

to

the

transceiver

and

connects

to

the

mount-

ing

rack

through

the

cable

supplied

with

the

mount-

ing

rack.

WARNING

LETHAL

HIGH

VOLTAGE

IS

PRESENT

WITHIN THIS EQUIPMENT.

BE

CARE-

FUL

WHEN INSTALLING THE UNIT,

WHEN MAKING BIAS ADJUSTMENTS,

AND WHEN

PERFORMING

CHECKS

UNDER THE CHASSIS.

10-2.

BIAS

ADJUSTMENT.

After

interconnecting

the

power

supply

to

its

proper

power

source

and

to

the

transceiver,

thE

transmitter

bias

must

be

adjusted

to achievE

optimum

performance

of

the

transceiver.

-

24-

1.

Disconnect

the

high

voltage

(red/white)

lead

from

pin

1 of TS302.

2.

Connect

an

ammeter,

with

a

full-scale

deflection

of

0-300

MA,

between

the

high

voltage

lead

and

pin

1

of

TS302.

3.

Turn

the

transceiver

on: OPERATION

switch

to

MOX-

FUNCTION

switch

to USB.

4. With no Signal

applied

to

the

transceiver

and

the

microphone

button

depressed,

adjust

the

BIAS ADJ

potentiometer,

R308

on

the

side

of

the

power

supply

chassis,

for

a

reading

of

70

MA

on

the

meter.

5.

Disconnect

the

meter

and

reconnectlead

to

pin

1 of TS302.

This

adjustment

is

not

necessary

each

time

the

SR-150

is

used;

however,

it

should

be

checked

periodically

and

whenever

the

transmitter

driver

and/or

final

amplifier

tubes

are

replaced.

10-3.

COVER

REMOVAL

Remove

the

nine

screws

on

the

top and one

side

of

the

unit

and

lift

the

cover

off.

This

will

provide

easy

access

to

all

the

components

in

the

power

supply.

REPAIR

PARTS

LIST

Schematic

Hallicrafters

Symbol

Description

Part

Number

C301

Capacitor,

25

/L

F,

50V,

Electrolytic

045-000863

C302

Capacitor,

0.001

/L

F,

3000V, 047-100397

Ceramic

Disc

C303,304,

Capacitor,

40

/L

F,

450V,

Electrolytic

045-000904

306

C305

Capacitor,

0.22/L

F,

10%,

600V,

Mylar

046-001376

C307,308

Capacitor,

20

/L

F,

250V,

Electrolytic

045-000903

CR301,302, Diode, Silicon, Type 1N3487 027-000314

303,304

CR305 Diode, Type 1N3194 019-002769

F301

Fuse,

15

Amperes,

23

Volts,

3AG 039-000707

F302

Fuse,

7.5

Amperes,

32

Volts,

3AG 039-000706

K301,302

Relay

021-000671

L301 Choke,

Filter

056-000555

Q301,302,

Transistor,

Type

2N441 112-000194

303,304

R301

Resistor,

7.5

Ohms,

10%,

10

watts,

445-032075

Wire

Wound

R302

Resistor,

220 Ohms,

10%,

2

watts,

451-652221

Carbon

R303

Resistor,

100 Ohms,

10%,

7

watts,

445-022101

Wire

Wound

R304

Resistor,

100 Ohms,

10%,

1/2

watt,

451-252101

Carbon

R305

Resistor,

1000

Ohms,

10%,

1/2

watt, 451-252102

Carbon

R306,307

Resistor,

47K

Ohms,

10%,

2

watts,

451-652473

Carbon

R308

Resistor,

Variable,

10K

Ohms,

20%,

3/4

watt,

Bias

Adj. 025-001833

R309

ReSistor,

lOOK

Ohms,

10%,

1/2

watt,

451-252104

Carbon

T301

Transformer,

Power

052-000969

Cabinet

Cover

066-003454

Cable

Clamp

076-202744

Clamp,

Resistor

(R301) 076-004121

Cover,

Terminal

Strip

(TS302) 066-003574

Fuse

Holder

006-200837

0301-_

-l

__

0302

- I

i

--

0303--

! -T

-0304

'---

TS301

K301 F301

F302

~-------------~----------

--~

TS

302

R308

BIAS

ADJ

Figure

17.

Internal Top

View

of Moclel PS·150·12 DC Power Supply.

GREE N

R301

7 .5

lO

W

1301

REO

15302

~

=

,...

-_

=.,..,..----

+-<>

I

575

\I

(Q)

200

MA

~~~6

REO/WHITE'j$"

18

2 W

R3

07

47K

2W

r-

-------~~--

--<r

------

-_+

-o

2

250

v(Q)

115

MQ,

C

R3

Q5

I

N3194

BLUE

R30

5

1000

C306

l'

:

~ov

RE O

-#IB

R

308

~

c.I

O

:..

K

_,--_-+-<>:3

_ BI

AS

-

75

TO

14 0

II

~b~~

fa) 10 M A

R309

WH

ITE - IS

10

01(

1/2

W

09 2-0 1

7843

LC

'fl-

..,-----j------+

--

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

--

------

-j-

-04

SWITCH

BLACK/

WH

I

TE

*'

18

L-

____

+

_________________________

I---<>5

HTRS BROWN

#'2

NOTES :

I.

C A

UTIO

N : O

BSERVE

POL

A

RIT

Y.

2.

THE W

IRING

SHOWN

IS

FOR

NEGATIVE

GROUNDED

VEHIC

LE

S .

IF

TH

IS

UNIT

IS

INST

A

LLED

IN

vEH

IC

LE

S HAV ING POSI

TI

vE

GROU NDED BAT T E

RI

ES , L

EA

DS

MARKED

3

AND

4 ON

TH

IS

SCHEMATIC

MU

ST

8E

UNSOLD

ERED AND

INTER-

C

HANGED

SO

THA

T

LEAD

I CON NEC TS

WITH

LEAD

4 A N D

LEAD

2

WITH

LEAD

3 .

r---/--o

6

8L

ACK *, 2

07

O

RANGE

(S

PA

RE

)

*rB

Figure

18.

Schematic

Diagr

am

of

Moclel

PS·150·12 DC Power Supply.

-2

5 -

08 9

-0029

79

B

SECTION

XI

MOBILE

MOUNTING

RACK

MODEL

MR-150

11-1.

DESCRIPTION.

Hallicrafters'

Model MR-150 Mobile Mounting

Rack

is

a

sturdy,

compact

unit

designed

to

facili-

tate

mobile

installation

of

the

Model SR-150

Transceiver.

This

mounting

rack,

with mounting

bracket

and

straps

supplied,

permits

transmission

hump,

floor,

and/or

under

dash

mounting

of

the

transceiver

(see

figures

4 and 5).

This

rack

is

equipped with a

cable

for

con-

nection

to

the

PS-150-12

Power

Supply,

an

audio

connector

brought

out

to

the

side

for

connection

to

speaker,

and

provisions

for

a

direct

connection

to a

suitable

antenna.

The

side

panels

of the mounting

rack

fit

snuggly

against

the

transceiver

for

a

secure

installation.

Wing

screws

are

supplied

to

attach

the

transceiver

to

these

side

panels.

092-017932

Figure

19.

Hallicrafters

Model MR-1S0 Mobile Mounting

Rack.

Details

for

installing

this

equipment

in a

ve-

hicle

are

described

in

paragraph

3-4

and in

figures

4 and 5 of

this

handbook.

J

401

n t}-

REO/WHITE

·,8

~

~

10 7 4 I

RED'#'8

=

r--=

-c::::J

......

1/ B 5 2

0 9 J

I:l$l

t::a

12 6 3

WHITE

#,8

J402

~

V

BLACK

/

WHITE

'#'B

J

BROWN

·,2

J403

NOTE

I

BLACK

·,2

cp

/ \

0-

- - - -

-1

1

ORANGE'#'8

-=-

-

NOTES;

THE

AREA

DOTTED

IN

SHOWS

WIRING

NECESSARY

IF

A

COAXIAL

CONNECTOR

IS

AFFIXED

TO

THE

SIDE

OF

THE

MOUNTING

RACK

AND

INTERNAL

COAXIAL

CABLE

ADDED

BETWEEN

THIS

CONNECTOR

AND

J403.

IF

DESIRED.

THE

ANTENNA

MAY BE

CONNECTED

DIRECTLY

TO

J403.

,....,

I

2

3

4

S~

6

7

U

TO TS

S02

ON

PS-150-12.PINS

575V

AS

MARKED.

(SEE

FIGURE

IT)

2S0V

-9SV

BIAS

SWITCH

FILAMENTS

GROUND

SPARE

Figure

20.

Schematic

Diagram

of

Model MR-1S0 Mobile Mounting

Rack.

089-003331

B

-

26-

REPAIR

PARTS

LIST

FOR

MR-1SO

Bracket,

Mounting

Cable

Assembly

Clamp,

Cable

•

Connector,

Phone

Type

(Speaker)

Connector,

Power

(12-pin) . • •

Connector,

RF

Type

(Antenna)

Guide

Pin

...........

.

Knob,

Decorative,

Wing-Screw

(2)

Pad,

Side

Bracket

(Left) •

Pad,

Side

Bracket

(Right) • •

Strap,

Mounting

(2)

• • • • •

-

27-

067-010870

087-007656

076-002744

036-000338

010-002585

035-000082

074-002792

015-001768

014-000475

014-000483

076-003202

'.

NOTES:

-

28-

15M

Ll

---r---

,

--

---

-----

--

-

---

__

u

_________

---

___

n_

- -

--

-

------

- -

-(~;NO

S~~~C~~R

C--

-

--

-

--

-------

--

-

---l

VIA

1/2

6AZ8

RECEIVER

R F

AMPL

VIB

1/2

6AZ8

100KC

XTAL

CAL

V3A

V2

TI

J/26EA8

T2

V4

VI7A

C47

C49

Ll5 1

'j

82

R30

V6

12

BE6

PRODUCT

DETECTOR

R40

47K

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SUPPLY

Figure

21,

Schematic

Diagram of

Model

SR-150

Transceiver,

Schematic

Symbol

Cl,18,145,

163

C2,19,147

C3,20,148

C4,24,25,143

C5,70

C6,23

C7A,B,C,

D,&E

C8,33,59,

76,108

C9,50,71

Description

CAPACITORS

181l1lF,

5%, 500V,

Plastic

Mica

85

Illl

F,

2%, 500V,

Plastic

Mica

135

IlIlF,

2%, 500V,

Plastic

Mica

151l1lF,

5%,

500V,

Plastic

Mica

22

IlIlF,

5%, 500V,

Plastic

Mica

3900

/lI.L

F,

2'1'-,

500V,

Plastic

Mica

Variable,

PRESELECTOR

10

1"11

F,

5%, 500V,

Plastic

Mica

47

IlIlF,

20/"

500V,

Plastic

Mica

Cl0,11,37,

000211

F,

20%, 600V,

55,61,112,117,

Ceramic

Disc

137,168,169,

170,171,179,

180

C12,13,29,

30,35,36,41,

68,69,75,79,

102,113,132,

133,146,149,

0.005

I"

F,

20%, 500V,

Ceramic

Disc

150,151,162,167

C14,17,22,26,

100

IlIlF,

2%, 500V,

27,57,74,78,

Plastic

Mica

81,126,130,

135,136,173,

174

C15,164

C16

C21

C28,31,34,

39,40,42,43,

44,46,51,53,

54,56,64,67,

82,84,107,

110,152,154,

159,160,177,

181

C32A,B,C,

D,&E

C38

C45,47,49,62,

65,80,83,99,

111,116,134,

153,155,161,

166,172,176

C48

C52,72

C58,157,

165,178

C60,109

C63,100

C66,118,

120

C73

C77

C85,91,98,

101,156

C86

C87

CB8

C89

C90

C92

C93,94

C95

Variable,

Trimmer,

51lllF

to

251lllF

125 Illl

F,

2%, 500V,

Plastic

MiCa

33

I'll

F,

2%, 500V,

Plastic

Mica

O.OIIlF,

20%, 500V,

Ceramic

Disc

Variable,

TUNING

39 Illl

F,

2%, 500V,

Plastic

Mica

0~001

Il

F,

20%, 500V,

Ceramic

Disc

361l1lF,

2%, 500V,

Plastic

Mica

821l1lF,

2%, 500V,

Plastic

Mica

0.22IlF,

10%, 200V,

Paper

Tubular

470IlIlF,

2%, 500V,

Plastic

Mica

5

11

F,

25V,

Electrolytic

001

IlF,

+80%,-20%, 100V,

Ceramic

Disc

1201l~F,

2%, 500V,

Plastic

Mica

6~8

Illl

F,

±0,5 Illl

F,

500V,

Plastic

Mica

1000 Illl

F,

GMV,

Ceramic

Feed-Through

3.3

~Il

F,

±0,5

1111

F,

300V,

Plastic

Mica

Nil.e;;}

51

MIL

FJ

29;"

N30,

Ceramic

Tubular

12

I'll

F,

5%, N470,

Ceramic

Tubular

43

IlIlF,

2%,

300V,

Plastic

Mica

910

Illl

F,

2%,

300V,

Plastic

Mica

181"1lF,

5%,

300V,

Plastic

Mica

Hallicraiters

Part

Number

482-132180

482-161850

493-121350-334

482-132150

482-132220

482-361392

048-000526

482-132100

482-151470

047-100471

047-100442

482-161101

044-100473

493-121250-334

482-151330

047-100354

048-000522

482-151390

047-001671

482-151360

482-161820

046-001298-04

482-261471

045-000938

047-001428

482-161121

493-140680-531

047-001308

493-140330-521

044-000568

481-151270

491-024510-31

491-005120-83

481-151430

481-261911

481-132180

C96,139

Variable,

Trimmer)

044-000520

C97

Cl03,106

008

I'll

F

to

13

Ill'

F,

3000V

(Piston

type

with

hardware)

681'IlF,

2%,

300V,

481-161680

Plastic

Mica

Variable,

Trimmer,

8

~~F

to

50

i"ilF

044-200437

SERVICE

REPAIR

PARTS

LIST

MODEL

SR-150

Schematic

Symbol

Description

Hallicrafters

Part

Number

C104,105

C114

C115

A&B

C119,123

C121

C122

C124

C125

CI27,128,

129

C131

C138

C140,141

C142

C144

C158

C175

R1,2,8,139,

143,146,149,

152,158

R3

R4

and

91,

R46

and

140

R5,1l,17,24,

31,36,37,39,

40,49,52,77,

113,136,137,

159

R6,81

R7,27,30

R9

Rl0,38,43,

141

R12

R13,23

RI4,15,18,

28,33,42,

50,53,54,55,

56,57,59,60,

63,69,73,114,

128,154

CAPACITORS

(CONT)

3301l1lF,

2%, 500V,

Plastic

Mica

10

Il

F,

50V,

Electrolytic

2 x 30

Il

F,

350V,

Electrolytic

0.001

Il

F,

20%, 3000V,

Ceramic

Disc

51l1lF,

±0,51lIlF,

500V,

Plastic

Mica

Variable,

FINAL

TUNING

220IlIlF,

2%, 500V,

Plastic

Mica

150 Illl

F,

2%, 500V,

Plastic

Mica

390

IlIlF,

2%, 500V,

Plastic

Mica

0.01

Il

F,

+80%,-20%, 500V,

Ceramic

Disc

lOOOIlIlF,

2%, 500V,

Plastic

Mica

510IlIlF,

2%, 500V,

Plastic

Mica

270 Illl

F,

2%, 500V,

Plastic

Mica

680 Illl

F,

2%,

500V,

Plastic

Mica

0.1

IlF,

10%, 200V,

Paper

Tubular

0.002

IlF,

20%, 500V,

Ceramic

Disc

*RESISTORS

I

Megohm

180

Ohms

Variable,

Dual: 10K

Ohms,

30%, 1

watt,

RF

GAIN

and

500K

Ohms,

30%,

1/4

watt,

AF

GAIN;

10K

Ohms,

30%,

1

watt,

RF

LEVEL

and

500K

Ohms,

30%,

1/4

watt,

MIC GAIN

47K

Ohms

180K

Ohms

15K

Ohms

150K

Ohms

2200

Ohms

100

Ohms

15K

Ohms,

2

watts

1000

Ohms

RI6,22,32

220

Ohms

RI9,29,51,66,

470K

Ohms

79,112,148

R20,34,64,67,

220K

Ohms

74,92,93,94,

132,163

R21,65,124

22K

Ohms

R25 82

Ohms

R26,35,41,75,

lOOK

Ohms

84,87,102,110,

115,125,135,

142,147,151,

R44,

103,

133

134,145

R45

138

R58

E6!

R62

R68

R70,83,100,

130

R71,

129,

157

R72

R76

R78

R80

R82

H85,86,121

R89,90

R95

R96,150

R97,156

R99

470

Ohms

1800

Ohms

10K

Obms

4700

Ohms

22K

Ohms,

1;·1

watt

16K

Ohms,

1/4

watt

27K

Ohms,

1/4

walt

4700

Ohms,

2

watts

2700

Ohms

68K

Ohms

680

Ohms

2200

Ohms,

1/4

watt

27K

Ohms

Variable,

25K

Ohms,

30%,

1/3

watt,

CAL

ADJ

VarIable,

25K

Ohms,

30%,

1/3

watt,

RIT

(Inc. S4)

820

Ohms

407

MEgohms

2500

Ohms,

5%1

10

watts

1

482-161331

045-000755

045-000902

047-100397

493-110050-531

048-000525

482-161221

482-161151

482-161391

047-100224

482-261102

482-261511

482-161271

482-261681

046-001294-04

047-100395

451-252105

451-252181

025-002063

451-252473

451-252184

451-252153

451-252154

451-252222

451-252101

451-652153

451-252102

451-252221

451-252474

451-252224

451-252223

451-252820

451-252104

451-252471

451-252182

451-2"2103

451-2521?2

45]"

152223

451,,152183

451-152273

451,,652472

451-252272

451,~25268:;

451

451-152222

451-252273

025-002061

025-002062

451-252821

451-252475

024-001467

025-0()2067

451-252825

451-352470

Schematic

Symbol

R104

Rl07

Rl09

Rll1

R116

R117

R118,122

R119

R120

R126

R127

R131

R144

R153

R155

R160

R161,162

Description

* RESISTORS (CONT)

2700

Ohms,

1

watt

470

Ohms,

1

watt

47K

Ohms,

2

watts

270K

Ohms

820K,Ohms

2.2

Megohms

3300

Ohms

82K

Ohms,

1

watt

Variable,

50K

Ohms,

20%,

0.2

watt,

Meter

Zero

33K

Ohms

56K

Ohms

Variable,

250

Ohms,

0.3

watt,

Balance

3900

Ohms

330K

Ohms

Variable,

10

Megohms,

20%,

0.2

watt,

Delay

1500

Ohms

10

Ohms

Hallicrafters

Part

Number

451-352272

451-352471

451-652473

451-252274

451-252824

451-252225

451-252332

451-352823

025-002065

451-252333

451-252563

025-002064

451-252392

451-252334

025-002066

451-252152

451-252100

*

All

RESISTORS

are

carbon

type,

10%,

1/2

watt

unless

otherwise

statecL

Ll

L2

L3

L4

L5

L6,13,16,

25,26,29,

33,36,42

L7,37

L8,38

L9,39

LlO,40

Lll,41

L12

L14,15

L17,18

L19,20

L21

L22

L23

L24

L27

L28

L30

L31

L32

L34,35

Tl,2

T3

T4,6

T5

Vi

V7

V8,lO,19

Vll

Via

1,'1.8

CR4

COILS

&

TRANSFORMERS

Coil,

Antenna,

15

Meters

Coil,

Antelma, 20

Meters

Coil,

Antenna,

40

Meters

Coil,

Antenna,

80

Meters

Coil,

Antenna,

10

Meters

Coil,

0.7

MH

RF

Choke

Coil,

Mixer

and

Driver,

10

Meters

COil,

Mixer

and

Driver,

15

Meters

Coil,

Mixer

and

Driver,

20

Meters

Coil,

Mixer

and

Driver,

40

Meters

Coil,

Mixer

and

Driver,

80

Meters

Coil,

600-MC

to

605-MC

Trap

Coil,

IF,

Filter

Termination

Coil,

Crystal

Oscillator,

10

Meters

Coil,

Crystal

OSCillator,

10

Meters

Coil,

Crystal

Oscillator,

15

Meters

Coil,

Crystal

Oscillator,

20

Meters

Coil,

Crystal

Oscillator,

40

Meters

Coil,

Crystal

Oscillator,

80

Meters

Coil,

VFO

Coil,

27

IlH

RF

Choke

Coil,

1 MH

RF

Choke

Coil,

Final

Amplifier

RF

Choke

Coil,

Final

Amplifier

Pi-Output

Coil,

Parasitic

Choke

Assembly

Transformer,

Variable

IF,

605

MC

to

600

MC

Transformer,

IF,

1650

KC

Transformer,

BFO

and

Balanced

Modulator

OUtput

Transformer,

Output

**ELECTHON

TUBES

& DIODES

Typt:

6AZB

Type

Tyl'''

6EA8

Tube,

Type

12BE6

Tube,

TYVe

6AH6

Tube,

Type

12AT7

Tube,

Type

6TEA

Tube,

Type

OA2

Tube,

Type

6AQ5A

Type

Type

Type

12AX7/ECCB3

Type

lN295

lN87

CR12

Diode"

Type

lN456

051-003350

051-003347

051-003345

051-003346

051-003531

053-000530

051-003532

051-003349

051-003342

051-003340

051-003341

053-000665

050-000801

051-003353

051-003343

051-003529

051-003344

051-003530

051-003351

051-003509

053-000666

053-000580

053-200426

051-003348

053-000676

050-000786

050-000890

050-000881

055-000469

090-901417

()90-901474

090-901350

090-900040

090-900793

090-000034

090-901403

090-900001

090-901331

090-901475

090-901192

019-301980

048-000464

019-002941

019-002964

** See Seetion HJ

Page

3

for

Tube

Functions,

Schematic

Symbol

SI

SIB,E

SIC,D,

F,H

SIG

SIJ

S2

S3

S4

S5

S6

S7

Yl

Y2

***

Y3 ***

Y4

Y5

***

Y6

Y7

Y8

Y9

YIO

Yll

Description

SWITCHES

Rotary,

BAND

SELECTOR

(Inc.

SlA ONLY)

Wafer,

Crystal

Oscillator

and

Transmitter

Mixer

Wafer,

Antenna,

RF

Amplifier,

Mixer,

and

Final

Input

Wafer,

Driver

Output

Wafer,

Final

Pi-OUtput

SPST,

Antenna

Rotary,

CAL-OFF

SPST,

RIT-OFF/ON

Rotary,

FUNCTION

Rotary,

OPERATION

(Inc.

S7)

SPST,

POWER

CRYSTALS

100 KC,

Crystal

Calibrate

36,0

MC, 10

Meters

35.5

MC, 10

Meters

35.0

MC, 10

MeterS

3405 MC, 10

Meters

2705 MC, 15

Meters

2005 MC, 20

Meters

13.5

MC, 40

Meters

1000 MC,

80

Meters

164801 KC, LSB

1651.7 KC, USB

Hallicraiters

Part

Number

060-002442

062-000195

062-000196

062-000198

062-000197

060-100440

060-002555

Part

of

R82

060-002441

060-002443

Part

of

86

019-002712

019-002940-08

019-002940-07

019-002940-06

019-002940-05

019-002940-04

019-002940-03

019-002940-02

019-002940-01

019-002945-01

019-002945-02

***

Not

Suppliedo

Jl,2,4

J3,5

J6

J7

FLI

Ml

DS!

1(2,3

Kl

CONNECTORS

Antenna

(Receive

and

Common),

500-0hm

Output

PHONES

and

Key

Microphone

(lnco

Hardware)

Power

Input

(12-pin

Jones

type)

MISCELLANEOUS

Bristol

Wrench

(TUNING Knob)

Cabinet

Cable

Assembly

(Harnessed)

Coupler,

Solid

Cover,

Cabinet

Bottom

Cover,

Cabinet

Top

Cover,

VOX

Relay

Dial

Window

Disc,

Dial

(TUNING)

Emblem,

Hallicrafters

Logo

Escutcheon

Escutcheon

Plate

Filter,

Crystal

Lattice

Foot,

Plastic

(4)

Front

Panel

Gear,

Pinion

Gear,

Spur

(Fixed)

Gear,

Spur

Handle,

Knob

Iron

Core

(Coil

Slugs)

Iron

Core

(L27

Only)

Knob,

AF

GAIN, MIC GAIN,

and

RIT

(Round)

Knob, BAND

SELECTOR

and

FUNCTION

Knob,

CAL

ADJ

and

CAL-OFF

Knob,

FINAL

TUNING and

PRESELECTOR

NO. 1815

Pointer,

TUNlliC

and

PHESELECTOR

POinter,

TUNING

Dial

Relay,

RF

Swilchmg

and

Antenna

Relay,

VOX

Screw,

Machine

(TUNiNG

knob

spinner)

Skirt,

TUNll'iG Knob

Spring,

Anti-Backlash

Switch

Wafer

Washer,

TUNING

6'pinner

036-100041

036-200210

010-101569

010-002586

033-001071-11

150-003099

087-007664

029-100264

066-003141

066-003140

066-201460

022-000696

083-001012

007-000850

007-000812

007-000813

049-000216

016-201072

068-001174

026-001087

026-001088

026-001089

030-000793

003-203388

003-203305

015-001773

015-001760

015-001755-02

015-001690-21

Ol5-GG1T75

140,,01

083·001015

075-000841

052-()00205

426·003543

094-9032868

563

Printed

in U.S.A.