Heathkit SW-717 Assembly

ALIGNMENT
Before
you
start
to align
the
Receiver, allow
it
to operate
for
approximately 5
minutes.
lf any widence
of overheating
is
observed
during
this time,
turn the
Receiver
off and
refer
to
the
"ln
Case of
Difficulty"
section
of this
Manual.
For
best
results,
the
Receiver should
be
aligned
with
test
instruments.
A VTVM
(vacuum
tube
voltmeter)
and
a
modulated
rt
(radio
frequency)
signal
generator
(that
operates
at
least
from .5
to 30
MHz) are
required
for this
procedure,
described
under
"Alignment
With Instruments"
following. lf these instruments
are
not available,
perform
the
steps
under
"Alignment Without Instruments."
Refer
to
Figure
2
(fold-out
from Page
40)
for the
location
of
the
coils
and
trimmer
capacitors
used in
the alignment
instructions.
A
plastic
alignment
tool is
provided
to align
the
coils.
This
is
done by
inserting
the
tip of the alignment
tool
into
the coil
core, and
then rotating
the
tool
for the desired
indication
on
thE
VTVM.
SIGNAL
METER
ADJUSTMENT
{ )
Turn the
Receiver on,
(
)
Refer
to
Figure
2
and,
while
viewing
the Receiver
from the
front
panel,
insert
a small
screwdriver blade
(approximately
118" wide)
into hole AW in the rear
panel
and
into
the
R25
control on
the circuit board.
(
)
Turn
the
control
fully
clockwise, as
viewed from the
front
panel.
The
signal meter
(lnset
drawing #2)
should deflect to the right.
This indicates the meter
circuit is working.
r{IDATHI<IT"
(
)
Push the
connections
on
the black and
white
twisted
pair
onto
the two
loudspeaker
connecting
lugs.
(
)
Tune the
Receiver to
a
point
where
no signal
can be
heard,
and
adjust the
control
in a counterclockwise
direction
until the
meter
needle rests
over
the
left-hand
dot and
points
to 0
on the meter
scale.
NOTE:
Protective circuitry
in the
radio
prevents
damageto
the meter by strong
signals.
(
)
Turn
the
Receiver off.
ALIGNMENT
WITH
INSTRUM
ENTS
(
)
Position
the
Receiver right
side
up.
The
loudspeaker
should
be connected.
(
)
Preset the
front
panel
controls as
follows:
VOLUME:Off
BAND:
D
BANDSPREAD:
O
MODE: CW
BFO: Off
(
)
Be sure
the
AN L switch
on
the
rear
panel
is OFF.
(
)
Connect
the
line
cord
to the
electric
outlet
and
turn
the
VOLUME
control
clockwise
to
the
3
o'clock
position. Adjust
this
control
as
desired
during
the
alignment.
t )
Connect
the
signal
generator leads to
the
terminal
strip
on
the
rear
panel
of
the
Receiver.
Connect
the
center
conductor
to
the
ANT
terminal
and
the
shield
conductor
to the
GND
terminal.
45

Heathkit SW-717 Specifications

General

Brand	Heathkit
Model	SW-717
Category	Receiver
Language	English