User Guide

27
4
RECEIVE AND TRANSMIT
2001 NEW 2001 NEW
Operating CW
q Push a band key to select the desired band.
w Push [CW/RTTY] to select CW.
After CW mode is selected, push [CW/RTTY] for 1 sec.
to toggle between CW and CW-R modes.
e Rotate [AF] to set audio to a comfortable listening
level.
r Rotate the tuning dial to simultaneously tune a de-
sired signal and its side tone.
S-meter indicates received signal strength.
t Push [TRANSMIT] to transmit.
The TX indicator lights red.
y Use the electric keyer or paddle to key your CW sig-
nals.
The Po meter indicates transmitted CW signal strength.
u Adjust CW speed with [KEY SPEED].
i Push [TRANSMIT] to return to receive.
Band keys[TX] indicator[TRANSMIT]
[CW PITCH]
[KEY SPEED]
[CW/RTTY]
Tuning dial
CW or CW-R appears
DD
Convenient functions for receive
Preamp and attenuator (p. 47)
Push [P.AMP/ATT] several times to set the pre-
amp OFF, preamp 1 ON or preamp 2 ON.
•“P.AMP1, P.AMP2 or P.AMP appears when the
preamp 1, preamp 2 or preamp is set to ON, respec-
tively. (depending on operating frequency band)
Push [P.AMP/ATT] for 1 sec. to set the attenuator
ON.
Push [P.AMP/ATT] momentarily to turn the attenuator
OFF.
•“ATT appears when the attenuator is set to ON.
Noise blanker (p. 50)
Push [NB] to turn the noise blanker ON and OFF.
•“NB appears when the noise blanker is set to ON.
Push [NB] for 1 sec. to enter noise blanker set mode.
Noise reduction (p. 52)
Push [NR] to turn the noise reduction ON and
OFF.
Rotate [NR] control to adjust the noise reduction level.
•“NR appears when the noise reduction is set to ON.
Auto notch lter (p. 52)
Push [A/NOTCH] to turn the auto or manual
notch function ON and OFF.
Rotate [NOTCH] control to set the attenuating fre-
quency for manual notch operation.
Twin PBT (passband tuning) (p. 51)
Rotate [TWIN PBT] controls (inner/outer).
Push [PBTC] to clear the settings.
AGC (auto gain control) (p. 48)
While M1 is selected with [MENU], push
[F1 AGC] several times to select AGC F,
AGC M, AGC S or AGC OFF.
1
4 function (p. 21)
While M1 is selected with [MENU], push
[F3 1/4] to turn the
1
4 function ON and OFF.
DD
Convenient functions for transmit
Break-in function (p. 55)
Push [VOX/BK-IN] several times to set the break-
in OFF, semi break-in or full break-in.
•“BK-IN or F BK-IN appears when the semi break-in
or full break-in is set to ON, respectively.
IC-7400.qxd 02.4.2 11:35 Page 27