Message repeat interval in seconds (0 to 25 5 ). To repeat a message, hold M1 –
M4 rather than tap. A 6 - 10 sec. interval is about right for casual CQing. Shorter
intervals may be needed during contests, and longer for periodic CW beacons.
Sets preamp gain to 10, 20 , or 30 dB on a per-band basis. (30 dB is typically
used only on 6 meters, where it improves sensitivity by 1-2 dB. This setting
should only be used if necessary, since it increases susceptibility to overload.)
There are actually two preamps: the 20 dB low noise amp (LNA) and the 10 dB
setting of the isolation amp (see RX ISO, below). Use the 20-dB preamp when
possible, since it has a better noise figure and lower current drain. If you select 10
or 30 dB, the isolation amp is turned on, adding about 15 mA to current drain.
Used to calibrate the KX3’s synthesizer. VFO A is used to set the reference
frequency (typically 114.2-114.4 MHz). Refer to pg. 31 for calibration details.
Sets the transmit offset (in kHz) for repeater operation, from 0 to 5 00 0 kHz.
Stored per-band and per-memory. Use AL T to select +/- offset or simplex.
RS232 (or USB) communications rate in bits per second (bps). During firmware
download (via the KX3FW PC program), the baud rate is set automatically to
38400 baud, but it is then restored to the value selected in this menu entry.
Receiver audio graphic equalizer. VFO A is used as an 8-band bar graph, showing
boost or cut (-1 6 dB to +16 dB in 1 dB increments) for each AF band. The 8
bands are 0.05, 0.1, 0.2, 0.4, 0.8, 1.6, 2.4 and 3.2 kHz. Tap 1 -8 to select an AF
band. VFO A selects boost/cut. Hold CL R to reset all bands to +0 dB.
CW and voice mode RX EQ are separate. Not applicable to DATA modes.
Set to ON to use the KX3’s RX I/Q jack with SDR (software-defined radio)
applications (pg. 26).
Set to ON if you’re using the KX3 nearby other receivers operating on the same
band, and a strong carrier from the KX3 is heard when its VFO is tuned to the
same frequency as the other receiver’s. The isolation amplifier is between the
antenna jack and the mixer, preventing leakage from the KX3’s local oscillator.
Used to null (attenuate) the opposite-sideband signal of each of the KX3’s analog
filter paths. See the Receive Sideband calibration procedure pg. 32.
Normally the KX3’s receive I.F. is 0.0 kHz (NO R setting). If a nearby transmitter
(or automobile DC power noise) causes audible artifacts in the KX3’s receiver,
the I.F. can often 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.
Set to NO R if a KXFL3 filter module is installed. The RXSBNUL calibration
procedure must be performed when this module is installed or removed (pg. 32).
Your KX3’s serial number, e.g. 05 0 00 . Cannot be changed.
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.
To turn on switch test, rotate VFO A until the parameter becomes SC N A DC .
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.
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