Heathkit HW-9 User Manual

Page 6
Heathkit
6.
Each
circuit
part in
an
electronic
kit
has
its
own
component
number
(R2, C4,
etc.).
Use
these
numbers
when
you
want to
identify
the
same
part
in the
various
sections
of
the
Manual.
These
numbers,
which
are
especially
useful
if
a
part
has to
be
replaced,
appear:
—
In
the
Parts
List,
—
At
the
beginning
of
each step
where a
com-
ponent
is
installed,
—
In
some
illustrations,
—
In
the
Schematic,
—
In
the
section
at
the
rear
of
the
Manual.
7.
When
you
are
instructed
to
cut
something
to
a
particular
length,
use
the
scales
(rulers)
pro-
vided at
the
bottom
of the
Manual
pages.
I SAFETY
WARNING:
Avoid
eye
injury
when
I you
cut
off
excessive
lead
lengths.
Hold the
I leads
so they
cannot
fly
toward
your
eyes.
SOLDERING
Soldering
is
one
of the
most
important
operations
you
will
perform
while
assembling
your kit. A
good
solder
connection
will form
an
electrical
connection
between
two parts,
such as
a
component
lead
and
a
circuit board
foil. A
bad
solder
connection
could
prevent an
otherwise
well-assembled
kit
from
operating
properly.
It
is easy
to
make
a good
solder
connection
if you
follow a
few
simple
rules:
1.
Use the
right
type
of
soldering
iron.
A
22
to
25-watt
pencil
soldering
iron
with a
1/8"
or
3/16"
chisel
or
pyramid
tip
works best.
2. Keep
the
soldering
iron
tip clean.
Wipe
it often
on a
wet
sponge
or
cloth; then
apply
solder
to
the tip
to
give the
entire
tip a
wet
look.
This
process
is
called
tinning,
and
it will
protect
the
tip
and
enable you
to
make
good
connections.
When
solder
tends to
"ball" or
does
not stick
to the
tip, the
tip
needs
to be
cleaned
and
retin-
ned.
NOTE:
Always
use
rosin
core,
radio-type
solder
(60:40
tin-lead
content)
for
all of the
soldering
in
this kit.
This
is the type
we
have
supplied
with
the
parts.
The
Warranty
will be void
and we
will not
service
any kit in
which
acid core
solder or paste
has
been used.

Heathkit HW-9 Specifications

General

Brand	Heathkit
Model	HW-9
Category	Transceiver
Language	English