Heathkit SB-401 - Page 41

Page 116
Tune up the Transmitter using steps A through
I of the CW tune-up chart, and then continue
as follows:
SWITCH OR
CONTROL
SWITCH OR
CONTROL
POSITION
ALC ADJUST
C, LEVEL
D. ANTI-VOX
The VOX DELAY and VOX GAIN controls should
be adjusted to suit your operating convenience,
(_ ) Speak into the microphone normally, using
VOX operation, Adjust the VOX GAIN con-
trol for the microphone sensitivity desired
to turn onthe Transmitter, The VOX DELAY
control should be set for the hold-in time
desired after the operator stops talking,
Gag He4tuxir
COMMENTS
With the Meter switch in the ALC position
during transmitter standby periods, it is norm-
al for the meter to deflect full scale,
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,
Adjust for midscale (top of ALC area) meter
reading on peaks while the Transmitter is being
modulated,
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,