Heathkit SB-401 Assembly Manual page 140

With the Receiver set to a strong station and
with proper listening level, advance the ANTI- .
VOX control clockwise until the Receiver audio
will no longer trip the VOX circuit of the
Transmitter.
Adjust for midscale (top of ALe area) meter
reading on peaks while the Transmitter is being
modulated.
Adjust for zero meter indication with no modu-
lation and with the push-to-talk button de-
pressed. It is normal for the meter to indicate
full scale when the Transmitter is in STBY.
With the Meter switch in the
ALe
position
during transmitter standby periods , it is norm-
al for the meter to deflect full scale.
( ) Speak into the microphone normally, using
VOX operation. Adjust the VOX GAIN con-
trol for the microphone sensitivity desired
to turn on the Transmitter. The VOX
DELA
Y
control should be set for the hold-in time
desired after the operator stops talking.
The VOX
DELAY
and VOX GAINcontrols should
be
adjusted to suit your operating convenience.
D.
ANTI-VOX
C. LEVEL
B. ALC ADJUST
COMMENTS
ALe
A.
METER
SWITCH OR
CONTROL
POSITION
SWITCH OR
CONTROL
Tune up the Transmitter using steps A through
I of the CW tune-up chart, and then continue
as follows:
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