Heathkit HD-1250 Manual page 34

Solid-state dip meter
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Page
32
(
)
Position the
oscillator circuit
board with
the
foil-side
toward
you,
and
with the
two
braids,
the
47 pF
capacitor
leads,
and
the blue wire
toward
your
right.
Slide
the
oscillator circuit
board
into
the
rear
of the
chassis
assembly,
and
pass
the
two 47 pF
capacitor
leads directly
through
tuning
capacitor
lugs
2
and 3
as
shown. Then,
press
the
oscillator circuit
board
to
the
right as far as
you
can to shorten
the
47 pF
capacitor
leads as
much
as
possible.
Do
not
solder
the capacitor
leads.
Route
the blue wire
under
the
coil
socket
and
under the edge of the
detector
circuit
board.
NOTE:
The
left
edge
of the
oscillator circuit
board should be 1/2"
from
the
edge
of
the
chassis as
shown
in
Pictorial
and
in
Detail
6-1 B.
(
)
Refer to
Detail 6-1
B
and loop
the
two
lengths of braid
coming from
the
corners
of
the
oscillator circuit
board
until
they
overlap the corners of the
detector
circuit
board
as
shown.
Solder each of these
braid
ends
to the
corners of the detector
circuit
board.
Be
sure neither of the braids
touch
the tuning
capacitor
lugs.
(
)
Position the
oscillator circuit
board
so
it is
vertical
and even
with the edge
of the
chassis
flange
as
shown
in
Pictorial 6-1
(
)
Solder tuning capacitor
lugs
2
and
3;
then
cut
off
any
excess lead
and
wire
lengths.
Refer to
Detail 6-1
C
for the next
two
steps.
CAUTION:
In
the followng
step,
be
careful that
the braid
end
does not "spring"
and
splash
hot
solder.
(
)
Loop
the
end
of the
braid
secured
by
the
back
panel
screw over
the
left
end
of
the
oscillator circuit
board
as
shown
and
solder
it
in
place.
Be
sure
none
of the braid
touches any
part
of the
circuit
board
other than the
ground
foil
at
the edge
of the board.
Detail 6-1

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