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Heathkit SG-6 User Manual

Heathkit SG-6
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NOTE:
IN
ARTICLES
21 AND 22, IN
ALL
CASES USE
STIFF
BARE
WffiE
A good way
to
prepare
the
supplied
length
of
bare
wire
for
wiring
purposes
is
to
uncoil
the
wire
and
place
one
end
in
a
vise,
for
instance,
and
with
a
pair
of
pliers,
stretch
the
wire
about
t".
The
stretching
cold-works
the
wire
so
that
it
becomes
stiffer
(therefore
better
for
wiring),
and
it
also
removes
kinks.
21.
Note
carefully
pictorial
3
showing
the
wiring
of
the
coils
to
the
selector
switch
and
the
wiring
of
the
selector
.switch.
Observe
Fig.
11
carefully
for
contact
numbering.
FRONT
Bf:IZ~DECK)
o D o
BFI
BF6
BF
BFS
15F3
BF4
REAR'
'
OECI(
-.....J
·:.~~
...
B~RS
BR3
BR4
NUMBERIN<Jr
OF
CONTACT
WGS
ON
SELECTO/l.
SWITCH
Fig.
11
----
.,,,-
Plastic
/Mi,-cal:or
it'~
Leave
clet11'ilkCe
betw~
/Hdicat~
a.Ht.I
PaH.el
METHOD
IN
WHICH
INDICATOR.
ASSEMBLY
ANO
l<NOB
MOUNT
ON
VARIABLE
TUNING
CONDENSER
SHAFT
•••••••••
°
Fig.
12.
Make
connection
from
the
selector
switch
rear
deck
contact
lug
BR12 (S)
to
the
front
deck
contact
lug
BF12
(S)
and
continue
the
wire
to
the
nearby
solder
lug
on
the
sub-chassis
(S).
SWITCH
AND
COIL
CONNECTIONS:
Bottom
lug
(if
present)
of
coil
E
leave
blank.
(The
bottom
lug
is
the
lug
nearest
the
spade
bolts.)
The
wire
tapped
about
midway
of
coil
E
con-
nect
to
BF5
(S).
Bottom
lug
of
coil
D
(S)
to
BF4
(S).
Bottom
lug
coil
C (S)
to
BF3
(S).
Bottom
lug
coil
B
(S)
to
BF2
(S).
Bottom
lug
coil
A (S)
to
BFl
(S).
Top
lug
coil
E (S)
to
BR5
(S).
Top
lug
coil
D (S)
to
BR4
(S).
Top
lug
~oil
C
(S)
to
BR
3 (S).
Top
lug
coil
B (S)
to
BR2 (S).
Top
lug
coil
A (S)
to
BRl
(S).
Make
certain
that
none
of
the
wires
of
above
connections
touch
or
could
touch
each
other
with
slight
jarring.
From
BR6
(NS)
connect
a
wire
to
the
nearest
stator
solder
connection
of
the
tuning
condenser
(S)
(see
pictorial
3).
(Stator
plates
are
those
plates
of
the
condenser
which
do
not
rotate,
that
is,
they
are
the
stationary
plates.)
See
Fig.
9
and
make
the
short
direct
connection
from
the
trimmer
condenser
(S)
to
the
nearest
stator
plate
solder
lug
(S).
Connect
from
the
trimmer
(S)
to
the
tuning
condenser
frame
(S).
Use
bare
wire
for
these
two
connections.
22.
The
sub-chassis
should
nowbe
mounted
on
the
main
chassis
by
means
of
the
spade
bolts
and
two
6-32
nuts,
a
lockwasher
being
placed
under
each
nut.
Connect
the
150 MMF
condenser
(AR26)
between
BR6 (S)
and
pin
6
of
tube
socket
B (S).
Make
a
short
direct
connection
from
BF6
(S)
to
pin
7 of
socket
B (S).
The
wiring
of
the
signal
generator
is
now
completed.
23.
Place
the
five
pointer
knobs
(051)
on
the
control
shafts
and
fasten
each
with
the
small
set
screw
that
is
in
the
knob.
Fully
mesh
the
variable
tuning
condenser,
and
with
a
set
screw
(TS55)
fasten
(do
not
tighten
down
the
screw
very
hard)
the
indicator
assembly
(SG45)
on
the
control
shaft
so
that
the
hair
line
coincides
with
the
left
end
of
the
dial
scale.
Be
sure
that
the
plastic
indicator
does
not
rub
against
the
panel
but
rather
has
a
little
clearance.
Fasten
knob SG44
on
the
tuning
condenser
shaft
and
leave
a
slight
clearance
between
the
knob
and
the
plastic
indicator.
Note FigurP. 12.
Page
7

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Heathkit SG-6 Specifications

General IconGeneral
BrandHeathkit
ModelSG-6
CategoryMeasuring Instruments
LanguageEnglish

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