Specifications

38
FM DEV
5.0
FM voice deviation in kHz. Tap 1 to change the function to PL DEV (PL tone
deviation; default 0.36 kHz). To turn on PL tones, use PITCH (pg. 15).
FM MODE
ON
If set to OFF, FM will be removed from the mode selections.
FW REVS
N/A
Rotate VFO A to see firmware revisions: MCU (µC, shorthand for
microcontroller), DSP (dSP), and KXPA100 amplifier MCU if applicable (PA).
LCD TST
OFF
Rotate VFO A to turn on all LCD segments for test purposes.
LED BRT
4
In the case where the LCD backlight is turned OFF, this menu entry adjusts
brightness of the discrete LEDs (TX, delta-F, OFS, and VFO B LED). Does not
set brightness of the LCD backlight itself (for that adjustment, use BKLIGHT).
MACRO n
Function
Used to assign macros (sequence of remote-control commands) to either of the
KX3’s programmable function switches (PF1 and PF2). For example, a single
macro can do the equivalent of “SPLIT, up 2 kHz, turn on Dual Watch”, etc.
Macros must first be created using KX3 Utility and sent to the KX3. Refer to
KX3 Utility’s Help information for instructions and examples.
MIC BIAS
ON
Set to ON for the Elecraft MH3. You may need to try both MIC BIAS settings to
see which works best with your mic. Monitor your transmitted signal with another
receiver when testing mic audio.
MIC BTN
PTT
UP.DN
If your mic has both a PTT switch and UP/DN buttons, set the parameter to
PTT UP.DN. This applies to the Elecraft MH3. If the mic has PTT but no UP/DN
buttons, use PTT. Otherwise, use OFF. This applies to most headset-mics,
including the Heil models available from Elecraft. Third-party mics may not have
a KX3-compatible PTT (push-to-talk) switch. You can still key the transmitter
either by tapping the XMIT switch or by using VOX (pg. 15).
MSG RPT
6
Message repeat interval in seconds (0 to 255). 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.
PA MODE
OFF
Sets the operating mode for Elecraft KXPA100 amplifier and its internal ATU.
Set to ON only if the KX3 is connected to the KXPA100 via the KX3 control
cable, which plugs into the ACC1 and ACC2 jacks at the KX3. This allows the
KX3 to control the amplifier’s output power, ATU tuning, antenna switch, etc. as
described in the KXPA100 owner’s manual. ATU MD becomes ATU.X MD.
Set to OFF otherwise. This allows the KX3 to be used with the KXPA100
without the custom control cable, but an amp keying connection is still required
from ACC2 on the KX3 to KEY IN on the amplifier.
If PA MODE is set to P out CAL, a KXPA100 is connected via the remote-
control cable, and PWR is set to CAL 75W, going into TUNE mode will calibrate
the KX3’s drive level for 75 W output at the KXPA100, on the present band. This
overrides the KXPA100’s factory aligned, per-band drive-power calibration, and
should not be necessary under normal circumstances. Also see MENU:TX GAIN.
PBT SSB
Lo-Hi Cut
Sets up the PBT I and II receive filter functions for SSB mode. Lo Cut and Hi
Cut (functions I and II, respectively) are the defaults for SSB. If PBT SSB is set
to NOR, then SSB mode will have the same PBT funcitons as CW and DATA
modes (WIDTH and SHIFT).
Roofing Filter Configuration for SSB Mode: Roofing filter FL2 (3 kHz) can be
inserted when the upper edge of the receive passband reaches either 2.4 kHz
(default value) or 2.9 kHz. When the passband edge is higher than this, FL1 is
used (wide filter). (If no KXFL1 is installed, FL1 is always used.)
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