Icom IC-78 Instruction Manual page 26

3
OPERATION
D
CW pitch control
The received CW audio pitch and monitored CW
audio pitch can be adjusted to suit your preferences
(300 to 900 Hz) without changing the operating fre-
quency.
q Hold down [SET] for 1 second to enter the Quick
Set mode.
w Push [UP p] or [q DN] one or more times until
"CW PITCH" is displayed, then rotate the main
dial to set the desired pitch.
D
CW reverse mode
The CW-R (CW Reverse) mode receives CW signals
with a reverse side CW carrier point like that of LSB
and USB modes. Use this mode when interference
signals are near the desired signal and you want to
change the interference tone.
q Push [MODE] one or more times to select CW
mode.
w Hold down [MODE] for 1 second to switch be-
tween CW and CW-R modes.
D
Electronic CW keyer
The IC-78 has an electronic keyer. Both keying speed
and weight (the ratio of dot : space : dash) can be set
in the Quick Set mode.
• Setting the electronic keyer
q Push [MODE] one or more times to select CW
mode.
w While holding down [SET], push [PWR] to enter
the Initial Set mode.
e Push [UP p] or [q DN] one or more times until
"CW PADDL" is displayed, then rotate the main
dial to select the paddle type.
• When "ud" is selected, the up/down switches on the
microphone can be used as a paddle.
• When using up/down switches as a paddle, squeeze
keying function is not available.
r Push [UP p] or [q DN] one or more times until
"KEY RAT" is displayed, then rotate the main dial
to select the desired weight.
• Key weight can be selected from 2.8 to 4.5.
t Push [UP p] or [q DN] one or more times until
"KEY SPD" is displayed, then rotate the main dial
to select the desired weight.
• Key weight can be selected from 6 to 60.
Paddle operation from front panel MIC connector
Connect a CW paddle as at right to operate an elec-
tronic keyer from the front panel MIC connector.
23
(p. 28)
1/3 octave
Hold down
BFO
MODE
for 1 second
Desired signal Interference
(600 Hz) (800 Hz)
CW mode (USB side)
KEYING WEIGHT EXAMPLE: morse code "K"
DASH
(Fixed*)
Weight setting:
1:1:3 (default)
Weight setting:
Adjusted
Adjustable range
*SPACE and DOT length can be adjusted with "KEY SPD"
in the quick set mode only.
Paddle operation
DOT
3.9 k ±5%
CW
paddle
2.2 k ±5%
DASH
• This function is available from the front panel mic
connector only.
• Be sure to select item "n," "r," or " oF" in CW PADDL of
the Initial Set mode.
• Connect straight key to "DOT" side.
This shows the
default setting for
the CW pitch control
(600 Hz).
1/2 octave
BFO
Desired signal Interference
(600 Hz) (400 Hz)
CW REV mode (LSB side)
DOT
DASH
SPACE (Fixed*)
front panel
MIC connector
E
y
MIC U/D
e