Heathkit SG-6 User Manual

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17.

RF

OUTPUT CONTROL:

To

lug

RFl

connect

(use

spaghetti)

a

lOK

resistor

lead

(Oll)

(S)

and

the

resistor's

other

lead

goes

to pin 7 of

socket

B (NS).

Connect

a

short

piece

of

wire

from

lug

RF2

(S)

to

lug

A7

(NS).

Fasten

a

piece

of

stiff

bare

wire

to

lug

RF3

(S),

slip

it

through

lug

All

(NS),

pass

the

wire

through

the

nearby

grommet,

and

then

connect

it

to

the

"GROUND"

lug

of

the

RF

"OUT"

jack

(S).

18. ATTENUATOR SWITCH:

To

lug

A.7

connect

a

lead

of a

620-680

resistor

(SG53)

(S)

and

the

resistor's

other

lead

fastens

to

contact

A5

(NS).

Connect

the

other

620-680

resistor

between

lugs

A5

(NS)

and

A3

(NS)

making

certain

that

the

resistor

does

not

protrude

so

that

it

will

interfere

with

slipping

the

chassis

into

the

cabinet.

Connect

a 47

ohm

resistor

(TS29)

be-

tween

solder

lugs

A5

(S)

and

All

(NS).

The

other

47

ohm

resistor

goes

between

contact

lugs

A3

(S)

and

All

(S).

Connect

a

length

of

wire

to

lug

A2

(S)

pass

it

through

the

nearby

grommet,

and

fasten

it

to

the

RF

"OUT"

jack's

"HOT"

lug

(S).

19.

Pass

the

line

cord

(078)

through

the

grommet

in

the

very

back

of

the

chassis,

and knot

the

cord

at

a

convenient

length

so

that

by

pulling

on

the

cord,

a

strain

will

not

be

placed

on

con-

nections

of

cord

to

equipment.

These

connections

are

as

follows: one

lead

of

the

cord

goes

to

the

left

hand

solder

lug

of

the

3

lug

terminal

strip

(S)

and

the

other

lead

connects

to

the

middle

solder

lug

of

the

3

lug

terminal

strip

(S).

THE

TURRET

COIL ASSEMBLY

AND

SUB

CHASSIS WIRING

20. Mount

the

coils

(SG56, SG57, SG58, SG59,

and

SG60) on

the

sub-chassis

as

shown

in

pictorial

3, and

place

a

lockwasher

under

each

of

the

6-32

nuts

used

(see

Fig.

8

for

identification

of

coils.)

Mount

the

4-30

MMF

trimmer

condenser

(SG55)

with

two

4-40

x t

screws

and

nuts.

(Fig.

9)

SG-56

SCJS7

"BAND

A''

"BAND

13

11

SG

58

"BAND'C"

SG

59

''BAND

D"

IDENTIFYING

Cl-\ARACTERISTICS

OF

COILS

Fig.

8

Mount

the

tuning

condenser

(SG40) (keep

the

plates

fully

meshed

to

avoid

damage)

using

three

6-32

x

3/16

screws

and

with a

solder

lug

under

the

screw

furthest

from

the

center

coil.

Use

lockwashers

under

the

two

other

screws.

Fasten

the

band

selector

switch

(SG49)

to

the

sub-chassis

using

a

control

lockwasher

and

nut.

(See

pictorial

3

.)

Mount

the

two

spade

bolts

(G32)

using

on

each

bolt

a

6-32

nut,

and

a

lockwasher

under

the

nut.

(Fig.

10.)

Page

6

SG60

''BAND

E"

D

MOUNTING

OF

TRIMMER

AND

CONNECTIONS

TO

TUNIN6

CONOEN5£R

Fig.

9

~

tkat

lite svb

Chassis

tests

OH..

tt<.e

Shoulder

o.f

tlte

~e

Bolt

(@-@

SPADE

!30LT

ASSEMBLY

Fig.

10

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Heathkit SG-6 Specifications

General

Brand	Heathkit
Model	SG-6
Category	Measuring Instruments
Language	English

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