Heathkit HD-1250 Manual page 20

Solid-state dip meter
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Page 18
NOTE:
In
the following
steps, line
up
the
locating
tab
on
the
transistor
with
the
locating
tab of the outline
on
the
circuit
board
and
insert
the
leads into
the correct
holes
as
shown.
Solder
the
transistor leads
to
the
foil
and
cut off the excess
lead
lengths.
NOTE:
The
1/8"
transistor
height
above
the
circuit
board
is
critical.
LOCATI MG
TAB
(
)
Q11.
MRF502
transistor
(#417-290)
NOTE:
Check
to
be
sure
no
part
of
transistor
Q11
is
touching
th
resistor-capacitor
assembly.
CONTINUED
NOTE:
Before
you
install
the following
disc
capacitor,
use long-nose
pliers
to
remove
the
excess insulation
from
the capacitor
leads.
(
)
C13.
5pFdisc.
(
)
C14.
.01
nF
(103)
ceramic.
Save
both
cutoff
capacitor leads
for
use
later.
(
)
Solder the
leads
to the
foil
and
cut
off
the excess
lead lengths.
NOTE:
To
prepare
a
wire,
as
in
the
following
step,
first
cut
it
to
the
indicated
length
and
then
remove
1/4"
of
insulation
from
each
end. Tightly twist each wire
end
and apply
a
small
amount
of solder to
hold
the
small strands together.
(
)
Prepare
a
5"
blue
wire.
(
)
5"
blue wire
at
C. Solder the
wire
to
the
foil
and
cut off the excess
wire
length.
The
free
end
will
be connected
later.

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