off, the AGC icons on the LCD change to AGC-, with the “minus” sign meaning
“off”. Turning AGC off also disables noise reduction.)
If an uncomfortably-strong signal appears in your headphones or speaker with
AGC off, reduce the threshold of the AGC-off audio limiter (MENU:AF LIM).
This setting is stored per-mode. The default for CW mode is FAST, and for other
modes, SLO. The setting is indicated by the AGC S and F display icons.
This menu entry provides access to several AGC parameters, each of which starts
with AGC*. For most purposes the defaults will suffice. Tap the 1 through 6
switches to access the following parameters (defaults in parentheses):
1 AGC*THR (007): Threshold at which AGC action begins. A higher number
moves the threshold up, providing greater audio dynamic range.
2 AGC*ATK (215): Rate of AGC attack. A lower number than the default
provides a softer attack but may also result in overshoot.
3 AGC*HLD (000): Hold time in seconds for voice modes. Prevents AGC decay
for a specified time after attack, reducing AGC interaction with signals.
4 AGC*DCY (Fast, 140; Slow, 040): Specifies the decay rate for slow or fast
AGC (see AGC SPD menu entry). A larger number means a faster decay.
5 AGC*SLP (015): The higher the slope number, the "flatter" the AGC response
is. With a high setting of slope, signals above the AGC threshold will be held close
in audio amplitude even if they vary in strength at the RF input.
6 AGC*PLS (NOR): Noise pulse rejection. Prevents the AGC (and S-meter)
from charging up on one-shot noise events. Set it to OFF to disable this feature.
CW mode: If set to NOR, CW normal will be in effect on the present band. Set to
ALT to use CW reverse mode instead (REV icon turns on). CW normal uses LSB
(lower sideband), while CW reverse uses USB (upper sideband). This selection
affects the direction of VFO tuning for increasing pitch as CW signals are tuned in.
In some cases switching from one to the other can reduce QRM.
SSB mode: If set the NOR, the sideband normally used on the present band will
be in effect: LSB on 160, 80, and 40 meters, and USB on 60, 30, 20, 17, 12, and 10
m. Setting ALT MD to ALT will select the other sideband for the present band.
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