buttons, use PTT. Otherwise, use OFF. This setting applies to most headset-mics,
including the Heil models available from Elecraft. Third-party mics may not have a
KX2-compatible PTT (push-to-talk) switch. You can still key the transmitter either
by tapping the XMIT switch or by using VOX (pg. 20).
Message repeat interval in seconds (0 to 255). To repeat a message, hold a
message button (1 – 3 ) 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 the operating mode for Elecraft KXPA100 amplifier and its internal ATU.
Set to ON only if the KX2 is connected to the KXPA100 via the KX2 Accessory
Cable (KX2ACBL), which plugs into the ACC jack at the KX2. This allows the
KX2 to control the amplifier’s output power and ATU tuning as described in the
KXPA100 owner’s manual. ATU MD becomes ATU.X MD in this case, and the
ANT.X SW menu entry can be used to switch antennas at the KXPA100.
Set to OFF otherwise.
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
KX2’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.
Sets the CW sidetone pitch in kHz. This is also the pitch of CW signals when
centered in the receiver’s passband. Note: In PSK-D mode (PSK31/63), the center
pitch is 1000 Hz (fixed). In FSK-D mode (RTTY), the mark tone is 915 Hz (fixed).
Used to calibrate the KX2’s synthesizer; normally done at the factory. VFO A is
used to set the reference frequency (typically 24.999-25.001 MHz). Refer to pg. 38
for calibration details.
Normally, RF GAIN is set to NOR -0 dB (no gain reduction). However, some
operators prefer to turn automatic gain control off (using MENU:AGC MD) and
adjust RF gain manually, maximizing dynamic variability of received signals. As
RF GAIN is advanced past -5 dB, a single bar on the S-meter starts at S-2 and
moves upward as a reminder of how far gain has been reduced (-5 dB/unit).
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