Elecraft KX3 Owner's Manual User Manual
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TX GATE
OFF 0
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.
TXSBNUL GAIN nnn Set at factory to null transmit opposite sideband. See Transmit Sideband, pg. 34.
VFO CRS
Per-mode Coarse tuning rate (hold
K H Z
, tune VFO A or B). Applies to the RIT/XIT tuning
knob if MENU:VFO OFS is set to
O N
, and both
R I T
and
X I T
are turned off.
VFO CTS
256
VFO counts per turn. Use
128
for easier fine-tuning of VFO; use
256
for faster
tuning. Note: The
K H Z
tuning rate always uses 128 counts per turn.
VFO NR
OFF
VFO tuning noise reduction. If VFO tuning noise is heard on a given band, set to
O N
. The setting is stored per-band. Typically it would be used only on 6 meters
or other high-frequency bands. (Also see RX SHFT.)
VFO OFS
ON
If
O N
, the RIT/XIT offset control can be used to tune VFO A in large steps when
R IT
/
X IT
are off and the OFS function of the OFS/VFO B knob is selected. Step
sizes vary by mode (see VFO CRS), and are the same as the
K H Z
tuning rates.
VOX GN
030
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).
VOX INH
000
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.
WATTMTR
0.84
Wattmeter calibration parameter. The default setting is recommended. If an
external, known-accurate wattmeter reads lower than the KX3’s wattmeter,
decrease the parameter value (and vice-versa). Note: The ATU (KXAT3), even
when bypassed, may cause a small amount of loss (typically less than 0.5 dB).
Internal wattmeter accuracy may vary by up to 1 dB, varying with band.
XVn ON
NO
Tap
1
–
9
to select the applicable transverter band (
1
-
9
). Set parameter to
Y E S
to turn the transverter band on.
XVn RF
144
Lower edge for transverter band
1
-
9
);
0
-
24999
MHz. (Tap
1
–
9
to select
applicable transverter band.) Use
144
for the KX3-2M internal 2-m module, and
70
for the KX3-4M 4-meter module.
XVn IF
28
Specify KX3 band to use as the I.F. for transverter band
1
-
9)
. (Tap
1
–
9
to
select the transverter band.) I.F. selections include
7
,
14
,
21
,
28
, and
50
MHz.
Use
50
MHz for the KX3-2M 2-m module, and 21 for the 4-meter module.
XVn PWR
H 0.1
Sets upper limit on power level in watts for XVTR band
1
–
9
to select
band.
The KX3 does not have a low-level transverter port, so external transverters must
have their own T/R switching and be able to handle the specified power level.
XVn OFS
0.00
Offset (
–9.99
to +
9.99
kHz) for transverter band n (
1
-
9
). (Tap
1
–
9
to select
transverter band.) Compensates for oscillator/multiplier chain errors in external
transverters. Not applicable to the internal KX3-2M/4M module, which derives its
signal from the KX3’s synthesizer.