Operation; Cw Mode Operation - Yaesu FT-991 Operating Manual

The powerful CW operating capabilities of the FT-991 permit operation using an electronic keyer paddle, a "straight
key", or a computer-based keying device.
S S
etup For trAight
Before starting, connect your key line(s) to the front panel KEY jack. Be sure [ BK-IN ] displayed by pressing the F(M-
LIST) button is turned off for now.
1. Press the MODE button, then touch [ CW-USB ] on
the LCD. The "USB CW"
display. The "MONI" icon will appear in the TFT
display; and the CW monitor is activated.
A :
dvice
If you press and hold the MODE button, you will
engage the "CW Reverse" mode, whereby the "op-
posite" sideband injection is used, compared to the
"normal" sideband. The "LSB CW"
pear in the display if you select CW Reverse.
2. Rotate the Main Tuning Dial knob to select the de-
sired operating frequency.
3. Press the F(M-LIST) button, then touch [ BK-IN ] on
the LCD to engage automatic activation of the trans-
mitter when you close the CW key. The "BK-IN"
icon will appear in the TFT display.
A :
dvice
 When you close your CW key, the transmitter
will automatically be activated, and the CW car-
rier will be transmitted. When you release the
key, transmission will cease, and after a brief
delay, receive will be restored. The delay time is
user-programmable per the discussion on page
##.
 As shipped from the factory, the
system for CW is configured for "Semi-break-
in" operation. However, using Menu item "057
CW BK-IN", you may change this setup for full
break-in (QSK) operation, whereby the switch-
ing is quick enough to hear incoming signals in
the spaces between the dots and dashes of your
transmission. This may prove very useful during
contest and traffic handling operations.
4. Operation using your CW key may now proceed.
t :
erMinology
Semi-break-in
This is a pseudo-"VOX" mode used on CW, whereby the closure of the CW key will engage the transmitter, and
release of the key will allow the receiver to recover after a short delay. No signals will be heard during the spaces
between dots and dashes (unless the sending speed is extremely slow).
Full break-in
Full break-in (also known as "Full QSK") involves very fast switching between transmit and receive, incoming
signals may be heard between the dots and dashes as you send them. This allows you to hear a station that sud-
denly starts transmitting on your frequency, while you are in the midst of a transmission.
FT-991 O
peraTing
(
k
ey And
icon will appear in the
icon will ap-
FT-991 TX/RX
M
anual
Cw M
ode
S k
trAight ey eMulAtion
MODE Button
[ BK-IN ] displayed by pressing the F(M-
 If you set
button to Off, you may practice sending CW
LIST)
with the sidetone
out over the air.
 If you reduce power via [ PROC ] displayed by press-
ing the F(M-LIST) button, the ALC meter reading
will increase; this is normal and does not indicate
any problem whatsoever (because increased ALC
voltage is being used to lower the power).
o
peraTion
) o
perAtion
F(M-LIST) Button
MULTI Knob
only, without having the signal go
Page 61