Heathkit
INTRODUCTION
The Heathkit
Model HW-9 Deluxe QRP CW
Trans-
ceiver is a compact
80-through 10-meter HF trans-
ceiver designed with the
avid low-power CW
operator in mind.
It covers the lower 250 kHz of
the
80, 40,
20,
and 15-meter
amateur bands. When
you install the Model HWA-9
Accessory Band Pack,
the
Transceiver also covers the
30,
17,
and 12-meter
WARC bands and the lower 250 kHz
of
the
10-meter
band. Broadband
circuits eliminate the need to tune
circuits within a band.
Just
turn the Band
switch
and select the desired frequency.
The design of
the wide-band front-end
stages elimi-
nates the need for
the customary RF amplifier in
the receiver
section. This results in
a
receiver
that
can properly handle incoming
signals with
a
wide
dynamic
range. Also, only one
frequency conversion
is used in
the main signal path of the receiver
sec-
tion. This is
done to reduce spurious responses
(bir-
dies) and
to maintain high image rejection.
Power
for this Transceiver
can be furnished by
a
power
supply, such
as
the Heathkit
Model PSA-9
Power
Supply, or directly from any regulated
12.6
VDC source that can
supply at least 1 ampere.
To align this Transceiver,
you
should have a
VTVM
(vacuum-tube
voltmeter)
or VOM (volt-ohmmeter),
a
frequency
counter capable of
measuring frequen-
cies
accurately
up to at
least
10
MHz, and a 50-ohm
resistive
dummy load.
The following
features are
also included
in your
Transceiver:
•
Solid-state
transmit/receive
switching
that permits full
break-in operation.
•
Continuously
variable RF
power output.
•
Receiver
incremental tuning
(RIT).
•
An audio-active
filter
with selectable
wide or narrow
selectivity.
•
A front panel
meter that indicates
signal
strength in receive
and relative
power in
transmit.
This
Transceiver
is a
handy
addition
to any ham
shack
for avid QRP operators,
newcomers, or old
timers alike.
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