Specifications

39
RX NR p
See descr.
Note 1: Most operators will not need to use this menu entry, which provides fine
control of receive noise-reduction parameters. The NR switch function provides
convenient control of the most important parameter (wet/dry mix); see pg. 13.
Note 2: Even if you do set up NR parameters using this menu entry, you’ll still
need to use the NR switch to turn NR on/off.
Note 3: NR is not available in DATA modes or when AGC is off (see AGC MD).
Note 4: Holding CLR while in this menu entry will restore all NR defaults.
The letter <p> in the menu name will be either B (beta), D (decay), or M (wet/dry
mix). Tap 1 , 2 , or 3 , respectively, to select these parameters. Beta and Decay
affect the depth of noise reduction and the time required for the DSP’s algorithm
to settle. The defaults are recommended, and are stored separately for CW and
voice modes. Mix controls how much of the signal is processed (wet) vs. how
much is unprocessed (dry). This parameter should be used to set the overall
receive noise reduction effect. The NR switch function directly controls the mix.
RXSBNUL
GAIN nnn
Used to null (reject) the opposite-sideband image signal of each of the KX3’s
analog filter paths. If the menu name is RXSBNL*, then an extended per-band
calibration procedure has been completed. Normally this is done at the factory.
This procedure requires a 160-6 meter signal source (such as an Elecraft XG3);
instructions are available on our website.
Also see Receive Sideband calibration, pg. 32.
RX SHFT
NOR
Normally the KX3’s receive I.F. is 0.0 kHz (NOR setting). If a nearby transmitter
(or automobile DC power noise) causes audible artifacts in the KX3’s receiver,
the I.F. can be shifted up to 8.0 kHz to reduce or eliminate such artifacts. With
this setting, dual watch and roofing filters cannot be used. This setting is per-
band, and should only be used on affected bands.
RX XFIL
Not Inst
Set to NOR if a KXFL3 filter module is installed. The RXSBNUL calibration
procedure must be performed when this module is installed (pg. 32).
SER NUM
N/A
Your KX3’s serial number, e.g. 05000. Cannot be changed.
SMTR MD
NOR
S-meter mode: When set to NOR, turning the preamp or attenuator on/off will
affect the S-meter reading. If set to ABS, the S-meter reading will stay fairly
constant with different preamp and attenuator settings.
SW TEST
OFF
To turn on switch test, rotate VFO A until the parameter becomes SCN ADC.
Then hold any switch to see its scan row and column ADC reading. You can also
rotate any of the four potentiometers to see their associated ADC readings
(main/sub AF gain and main/sub RF gain). If the SUB RF pot is mapped to
main/sub squelch, you must switch to FM mode to see its readings.
SW TONE
ON
If set to ON, switch presses generate audible feedback tones. If set to CODE nn,
Morse code characters are generated on any control activation at nn words per
minute. (The full list of Morse code control characters, as well as a text-only
panel description for blind operators, can be found on our KX3 web page.)
Switch tone volume is the same as CW sidetone volume. It must be adjusted in
CW mode, using MON.
Pitch of switch tones and Morse characters: In general, a low-to-high tone pair
(or high-pitched Morse) is generated when a switch function is turned on, and
high-to-low (or low-pitched Morse) when it is turned off.
Some switches do not generate tones because they might interfere with received
or transmitted audio.
TECH MD
OFF
Set to ON to view Tech Mode menu entries (those marked with in this list).
TIME
N/A
Real-time-clock view/set. Tap 1 / 2 / 3 to set HH / MM / SS. To see the time and
other displays during normal operation, tap DISP (see pg. 11). Time is only