Heathkit HW-9 User Manual

Heathkit
Page 37
Refer
to Pictorial 2-4
(Illustration
Booklet,
Page
11)
for
the
following
steps.
NOTE:
Solder
the leads
of each
of the
following
parts
to the foil
and
cut off
any
excess
lead
lengths
as
you
install it.
Install
parts
in
Section
1 of the
circuit
board
as fol-
lows.
( )
Q405:
MRF237
transistor
(#417-912).
Be sure
to match
the
lead
spacing
on the
transistor
with
the
hole spacing
on the
circuit
board
(when
you have
the transistor
properly
in-
stalled, its
tab will
be
positioned
as
shown
on
the
Pictorial).
Mount
this
transistor
down
against
the circuit
board.
( )
Q406: MRF237
transistor
(#417-912). Mount
this transistor
down
against
the circuit
board.
Install
parts
in
Section
2 of the
circuit
board
as fol-
lows:
( )
Q404:
2N3866
transistor
(#417-205). Mount
this
transistor
down
against
the
circuit
board.
NOTE:
Mount
the
following
transistors
1/4"
above
the circuit
board.
nstall parts
in Section
3
of
the circuit board
as fol-
ows:
)
Q302:
MPF105 transistor
(#417-169).
)
Q412:
X29A829
transistor
(#417-201).
)
U402:
78L08
integrated
circuit
(#442-681). In-
stall
this IC the
same as you install transistors.
)
Q411:
MPSA20
transistor
(#417-801).
)
Q409:
MJE171
transistor
(#417-819).
Match
the metal side
of the transistor with
the double
line
on the circuit
board. Start
the transistor
leads into
their corresponding
circuit
board
holes and
push the transistor
down until
the
wider
part of the
leads touch the circuit
board.
Then
solder the leads to the
foil and
cut
off
any
excess lead lengths.
BARE
M
n
METAL
<OYx
SIDE
DOUBLE
LINE
(
)
( )
( )
Q403:
MPSA55
transistor
(#417-865).
Be. sure
to
match
the flat
on
the transistor
with
the flat
part
of the
outline
on the
circuit
board.
Q401: MPS6521
transistor
(#417-172) and
1/8"
x 1/8"
ferrite
bead.
Slide
the ferrite
bead
onto
shown
fore
you
install
this transistor.
BASE(B)
LEADy^j
FERRITE-^^jrf
BEAD ,;.i;C5
•
• %
Q402:
MPSA6521
transistor (#417-172)
and
1/8"
x
1/8"
ferrite
bead. Slide the bead
onto
the base lead
(center lead)
before you
install
this transistor.
( )
Q407:
X29A829 transistor
(#417-201).
( )
Q408:
MJE171
transistor (#417-819).
Be
sure
to match
the metal side of the transistor
with
the double
line on the circuit board.
Install
parts in Section 4
of the circuit board
as
fol-
lows:
( )
Q301:
MPF105 transistor
(#417-169).
( )
Q303:
MPSA20
transistor
(#417-801).
Install
part in
Section 5 of the circuit
board as fol
lows:
( )
U303: MC1496G
integrated
circuit (#442-96).
Be sure
to match the
tab on this
IC
with the
tab shown on
the circuit board
outline. Then
start
the leads into
their corresponding
circuit
board holes. Position
the IC
1/4"
above the cir-
cuit
board before
you solder the leads to
the
foil.

Heathkit HW-9 Specifications

General

Brand	Heathkit
Model	HW-9
Category	Transceiver
Language	English