Specifications

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with the backlight turned off. Turning it off will extend battery life.
BND MAP
{band} In
Allows you to remove one or more bands from the BAND rotation. Use BAND
up/down to select bands, then set them to In or Out using VFO A. (Works with
transverter bands, too.) You can still get to mapped-out bands using memory
recall, direct frequency entry, or computer-control commands.
COR LVL
NOR 0.1
Sets the carrier-operated-relay (COR) threshold. The COR is used to detect, and
protect the KX3’s receiver from, a transmitter being used nearby. 0.1 watts is the
default and recommended level. See Troubleshooting for other suggestions.
CW IAMB
A
Iambic keying mode (A or B). The default is mode A, which is a little more
forgiving for first-time operators. Mode B may be preferred by operators who
learned to do “squeeze-keying” with another keyer having this or a similar mode.
Both modes provide dot- and dash-memories—enabling fast code speeds—but
with slightly different “element-insert” timing.
CW KEY1
TIP=DOT
Specifies whether the left keyer paddle (tip contact on the KEY jack) is DOT or
DASH. A third selection, HAND, allows either tip or ring to function as a hand
key, or as an input for an external keying device (keyer, computer, etc.).
CW KEY2
LFT=DOT
Specifies whether the left lever of the optional KXPD3 keyer paddle is DOT or
DASH. A third selection, HAND, allows either lever to function as a hand key,
or as an input for an external keying device (keyer, computer, etc.).
CW WGHT
1.25
Adjusts element/space timing ratio (weight) for the internal keyer.
Additional functions of this menu entry, via numeric keypad:
Tap 1 to select SSB -CW (default) or SSB +CW (allows CW in SSB modes).
When CW-in-SSB is in effect, tapping the KEYER/MIC knob in SSB mode
alternates between keyer speed and mic gain rather than CMP/ALC and SWR/RF
transmit metering. CW transmit in SSB mode is not available if SPLIT is on.
Tap 4 to select VOX NOR (default) or AUTO OFF. The AUTO OFF setting
turns CW VOX off on power-up, avoiding accidental keying by attached PCs, etc.
Tap 5 to select automatic VFO offset on SSB/CW mode change (VFO OFS) or
no offset (VFO NOR, default). Automatic offset is often used on 6 meters, where
mixed-mode QSOs are necessary during fading. Note: Pitch matching will be
more accurate if USB is paired with CW REV, and LSB with CW normal.
DUAL RX
OFF
Set to AUTO to enable Dual Watch (pg. 20). The SUB icon will turn on. If the
VFOs are not within the required range, the SUB icon will flash slowly. Note:
Dual watch only applies when using stereo headphones or dual external speakers.
FM DEV
3.5
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), and DSP (dSP).
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).
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,