Cw Mode Operation; Adjusting The Sidetone Audio Level; Cw Delay Time Setting; Cw Spotting (Zero-Beating) - Yaesu FTDX10 Operation Manual

CW Mode Operation

The impressive CW operating capabilities of the
FTDX10 permit operating with an Electronic Key-
er Paddle, a "Straight Key", or a computer based
keying device.
1. Before starting, connect the key cable to the
rear panel KEY jack.
2. Set the operating mode to CW-U.
The normal "CW" mode utilizes USB-side car-
rier injection.
CW reverse mode
CW-U (CW Reverse) mode receives CW sig-
nals with a reverse sideband CW carrier point
like that of LSB and USB modes. Use CW
reverse when interfering signals are near a
desired signal to move the interfering tone out
of the receiver bandwidth.
3. Rotate the Main Tuning Dial knob to select
the desired operating frequency.
4. Press the [FUNC] knob.
5. Touch [BK-IN] to turn ON the BK-IN function.
6. Touch [MONI LEVEL] and then turn the
[FUNC] knob to adjust the volume of the mon-
itor.
7. When using the keyer paddle, press the
[FUNC] knob and then touch [KEYER] to turn
ON the Electronic Keyer.
8. When the key or the keyer paddle is pressed,
the transmitter will automatically be engaged.
● Press [FUNC], then touch [CW SPEED],
and rotate the [FUNC] knob to set the de-
sired sending speed.
● As shipped from the factory, the FTDX10
CW TX/RX is configured for "Semibreak-in"
operation. However, using Menu item
"CW BK-IN TYPE" (page 96), this setup
may be changed to full break-in (QSK) oper-
ation, wherein the switching is quick enough
to hear incoming signals in the spaces
between the dots and dashes of the trans-
mission. This may prove very useful during
contest and traffic handling operations.
● If the [BK-IN] key is set to Off, CW sending
may be practiced with the sidetone only, with-
out having the signal transmitted over the air.
● To enable the CW keying operation in LSB/
USB mode and send CW signals without
switching the transceiver to CW mode,
change Menu item "CW AUTO MODE"
(page 95).
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● T h e s a m e o p e r a t i n g f r e q u e n c y m a y
b e m a i n t a i n e d a n d d i s p l a y e d w h e n
switching the transceiver between SSB
and CW mode, by setting Menu item
"CW FREQ DISPLAY" (page 96).
● By connecting the FTDX10 to a computer,
CW can be operated using free or commer-
cially available software and setting Menu
item "PC KEYING" (page 96).

• Adjusting the Sidetone Audio level

The CW sidetone audio level may be adjusted by
press the [FUNC] knob, then touch [MONI LEV-
EL], and then rotating the [FUNC] knob.

• CW Delay Time Setting

During semi-break-in (not QSK) operation, the
hang time of TX, after the transmitting ends may
be adjusted to a comfortable value corresponding
with the sending speed.
1. Press the [FUNC] knob, then touch [BK-DELAY].
2. Start sending and rotate the [FUNC] knob to
adjust the hang time for comfortable opera-
tion.
3. Approximately 1 second after selection, the
settings are saved and the normal operation
screen returns.

CW Spotting (Zero-Beating)

"Spotting" (zeroing in on another CW station) is
a handy technique to ensure the transceiver and
the other station are operating precisely on the
same frequency.
The Tuning Offset Indicator in the display may
also be moved to adjust the receiver frequency to
center on the incoming station with the CW pitch
corresponding to that of the transmit signal.
Turn OFF the Tuning Offset Indicator using
Menu item "CW INDICATOR" page 96.