Heathkit HW-101 User Manual

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( 4) Adjust the top and bottom slugs of transformer T102
for a maximum volume or S Meter indication.
( K Adjust the slug of transformer T103 for a maximum S
Meter indication.
(¥) Repeat the adjustments of transformers 7201, 7102,
and T103 for a maximum S Meter indication.
VFO ALIGNMENT
) Make sure the Transceiver has been warmed up for at
before the following
least 30 minutes before making
adjustments.
NOTE: Refer to Reading the Dial on Page 139.
/
{¥) Find the CAL signal within approximately 25 kHz of
3900 kHz (400 on the dial). A general coverage
receiver tuned to 5100 kHz will aid in identifying the
VFO signal. If you are receiving a CAL signal, it will
cease when the Function switch is set at VOX.
sce:
~—N.
Find the CAL signal near 4000 kHz. Then carefully
turn the dial to its counterclockwise stop. Hold the
VFO knob with one hand and, with the other hand,
slip the circular dial until the end of the scale marked
Tan at the RANG! oA
at ine ouV end.
“Stop” coincides with the hairlin
See Detail 8-9A on Page 78.
signal to your
frequency. By alternately moving your listening
frequency and then adjusting the VFO COIL, you can
“walk” the CAL signal in the desired direction until it
coincides with the 500 dial reading.
() Turn the dial to the vicinity of 0 and identify the
3500 kHz CAL signal. Move this signal so that it
coincides with the O dial reading by adjusting both
VFO TRIMMERS.
Page 121
(") As the two preceding adjustments interact to some
extent, repeat them until the 3500 kHz and 4000 kHz
CAL signals coincide respectively with the 0 and 500
marks on the dial.
NOTE: The VFO signal may be tuned in on a general
coverage receiver at 5000 kHz for the ‘500’ dial setting,
and at 5500 kHz for the “0” dial setting.
DRIVER GRID AND PLATE COILS
The driver grid and driver plate coils will b
ate co e adjusted in the
following
steps.
The
coil
locations
are
marked
on
the
shield
cover on the bottom of the chassis. These coils must be
adjusted in the proper sequence as follows:
(VY) Set the MAIN TUNING dial to 200, and the DRIVER
PRESELECTOR to the 12 o’clock position.
{ yj Adjust driver grid coi 3.5 and driver plate coil 3.5 for
a maximum S Meter indication. The S Meter will move
siowly during the adjustment of these two coils.
(hy) Change the setting of the front panel controls as
follows:
DRIVER PRESELECTOR — 29.2 position. See the
inset drawing on Figure 1-3 (fold-out from Page 106).
BAND — 29.0.
MAIN TUNING dial (VFO) — 200 kHz.
t
(¥) Turn the MAIN TUNING dial back and forth around
29.2 MHz to get the loudest signal. Check for the
calibrate signal by turning the DRIVER
PRESELECTOR to make sure there is a variation in
Make Suro were iS a VariatiOn: im
volume, Return the DRIVER PRESELECTOR to the
90 OD oncition
é0.6 posuon,
-f
(¥) Adjust driver grid coil 29 and driver plate coil 29 for a
maximum S Meter indication.

Heathkit HW-101 Specifications

General

Brand	Heathkit
Model	HW-101
Category	Transceiver
Language	English