necessary for any operational purpose. In all modes, ALC is optimized for low
distortion.) When ALC is turned off, a (-) sign is added to the parameter, e.g.
-ALC nn. Also, an asterisk is added to the PWR control value when it is being
adjusted (e.g. 5.0 W*). With ALC off, the displayed power level will not change;
the control functions as a fine power adjustment, and its effect must be observed
with an external instrument.
The TX noise gate can be used to suppress transmitted audio below a certain level,
e.g. that of an amplifier fan. Tap 1 within the TX GATE menu entry to turn the
noise gate on/off. Use VFO A to set the desired threshold. Since there’s no visual
indication that transmit audio is below the threshold, you should adjust it using the
transmit voice monitor (MON), ideally while using headphones. Set the threshold
high enough to cut off transmit audio due to local noise, but not so high that it
causes your voice to drop out too frequently.
Set at factory to null transmit opposite sideband. See pg. 40.
Tuning rate selection for VFO A and B when coarse tuning is selected (using
RATE). Also applies to offset tuning of VFO A (via the OFS/B knob) when both
RIT and XIT are turned off.
0.00 (CW)
0.50
(SSB/data)
If VOX MD is set to ON in the current mode, this menu entry sets the VOX delay
time in seconds (recovery time from transmit to receive). In CW mode, the default
delay (0.00) also turns on the QSK icon, indicating the fastest possible break-in.
(See CW WGHT menu entry for additional QSK settings.)
Independent VOX delay times are saved in SSB and audio data modes (pg. 28).
Adjusts sensitivity of VOX to match your mic and voice. Set to trigger at normal
speech level, but not in response to noise. Start with low settings (10-20).
Adjusts immunity of the VOX circuit to false triggering by speaker audio. (Also
known as anti-vox.) A setting of about 30 is a good starting point. If receive audio
from a speaker trips the vox, increase the setting.
ON (CW)
OFF (SSB,
AF data)
If VOX is OFF, transmit must be started by tapping XMIT (otherwise known as
PTT, or push-to-talk operation).
In CW mode, setting VOX MD to ON allows “hit-the-key” transmit. In SSB mode,