Elecraft KX3 Owner's Manual - Manual (Page 36)

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AFX MD Delay Sets up stereo audio effects (requires stereo headphones or dual external
speakers). Set to OFF for no effects.
D E LA Y is quasi-stereo, which provides a
very rich audio sound. P ITC H does left/right pitch mapping, which can be very
effective in CW mode.
AGC MD ON Some operators prefer to turn AGC off and control gain manually using the RF
gain control; see pg. 12. (When AGC is off, the AGC icons on the LCD change to
A G C - , with the “minus” sign meaning “off”.) If an uncomfortably-strong signal
appears in your headphones or speaker, see AF LIM (AGC-off audio limiter).
AGC SPD SLO This setting is stored per-mode. The default for CW mode is FA S T , and for other
modes, S LO . The setting is indicated by the A G C S and F display icons.
AGC*THR 007 This menu entry provides access to several AGC parameters, each of which starts
with
A G C * . For most purposes the defaults will suffice. Tap the 1 through 6
switches to access the following parameters (defaults in parentheses):
1 A G C *T H R (005): Threshold at which AGC action begins. A higher number
moves the threshold up, providing greater audio dynamic range.
2 A G C *A T K (215): Rate of AGC attack. A lower number than the default
provides a softer attack but may also result in overshoot.
3 A G C *H LD (000): Hold time in seconds for voice modes. Prevents AGC
decay for a specified time after attack, reducing AGC interaction with signals.
4 A G C *D C Y (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 A G C *S LP (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 A G C *P LS (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.
ALARM OFF Set alarm/Auto-Power-On time. Tap 1 to turn alarm on/off; tap 2 / 3 to set
H H . M M . If a KXBC3 option module is installed and an internal battery is
installed, time will be maintained when power to the transceiver is turned off.
Otherwise the time registers will reset to
00:00:00 on power-up.
At the alarm time, the KX3 will emit three short beeps. If power had been turned
off, AF output will then be restored to the last-used level.
AM MODE ON Set to O FF if AM operation is not planned. You can still copy AM signals using
SSB modes even if AM is turned off.
ATU MD
ATU.X MD Not Inst KXAT3 (or KXAT100) ATU mode. If a KXPA100 is connected via the remote-
control cable, and PA MODE is ON, the ATU MD menu entry changes to ATU.X
MD (X = eXternal). In this case the menu entry directly controls the mode of the
KXPA100’s 100-W ATU (KXAT100), not the KX3’s low-power ATU (KXAT3).
The parameter is normally set to B Y P or A U T O . Modes L1-L8 , C 1-C 8 , and C t
are used to test the KXAT3’s relays and L-network (not applicable to the
KXAT100). Tapping
C L R clears stored LC data for the present band (applies to
whichever ATU is in use, KXAT3 or KXAT100).
AM Broadcast Band Optimization: When a KXAT3 is installed, it normally
provides additional filtering to reject “image” responses when listening to signals
in the AM broadcast band (0.5-1.6 MHz). However, this may reduce recevier
sensitivity below 1.3 MHz. If signals in the lower portion of the broadcast band
are too weak, try tapping ‘1’ in this menu entry to select BCB=160 mode rather
than BCB=NOR (default). BCB=160 causes the KXAT3 to use the normal 160-
meter LC settings when tuned anywhere in the broadcast band.