21
CW Mode
Basic CW-Mode Setup
§ Tap MODE to select CW (normal CW mode).
Some operators prefer to use CW reverse (CW
REV). See MENU:ALT MD for details.
§ MENU:VOX MD can be set to ON (VOX) or OFF
(PTT) for CW mode. Most operators use VOX,
allowing the transmitter to be keyed immediately
whenever a hand key or keyer paddle is used. PTT
requires manual transmit start/stop using XMIT.
§ Set sidetone pitch using MENU:PITCH. 500-700
Hz is typically used with headphones.
§ Set sidetone volume using
MON.
§ MENU:VOX DLY sets the break-in or QSK delay
(the time before the receiver recovers after key-
up). A setting of 0.00 provides full break-in, also
known as “full QSK.” (The QSK icon will appear.)
MENU:CW WGHT provides two variations on
QSK; CW operators may wish to try both.
CW Receive Filtering
As conditions change, you can adjust the filter
passband using FIL as described on pg. 17. A narrow
passband can improve copy in the presence of noise or
interference, while a wider passband can be less
fatiguing to listen to. You’ll also find the audio
peaking filter (APF, pg. 18) to be very useful with
weak CW signals.
Off-Air Code Practice
Sending CW normally produces both a sidetone and a
transmitted signal. If PTT-CW is selected (by setting
MENU:VOX MD to OFF), hitting the key without
first tapping XMIT will generate only a sidetone. This
is useful for code practice or keyer speed adjustment.
CW-Mode Menu Settings
You can use the menu to change the settings for iambic
keying (CW IAMB), keying weight (CW WGHT), and
paddle normal/reverse or hand key (CW KEY1 for the
KEY jack, and CW KEY2 for an attached KXPD2 or
KXPD3 keyer paddle).
CWT, SPOT and Auto-Spot
When calling a station, you should try to match your
frequency to theirs. To facilitate this, the KX2 provides
both a visual tuning aid (CWT), as well as manual and
automatic spotting in CW and some data modes. See
pg. 18.
CW Text Decode/Display
The KX2 can decode transmitted and received CW
signals, displaying the text on VFO B (pg. 29). This is
especially useful when you’re learning CW, or if
someone who doesn’t know CW is looking over your
shoulder while you make CW QSOs. It’s also
indispensable for CW-to-DATA operation (pg. 27).
The KX2 can also capture transmitted CW for logging
purposes. See MENU:LOGGING.
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