25
3
BASIC OPERATION
2001 NEW
2001 NEW
■
Basic transmit operation
D
D
Transmitting
Before transmitting, monitor your selected operating
frequency to make sure transmitting won’t cause inter-
ference to other stations on the same frequency.
q
Push [TRANSMIT] or [PTT] (microphone) to trans-
mit.
• The [TX] indicator lights red.
w
Push [TRANSMIT] again or release [PTT] (micro-
phone) to return to receive.
D
D
Microphone gain adjustment
Before transmitting, monitor your selected operating
frequency to make sure transmitting won’t cause inter-
ference to other stations on the same frequency.
q
Push [PTT] (microphone) to transmit.
• Talk into the microphone at your normal voice level.
w
While talking into the microphone, rotate [MIC
GAIN] so that the ALC meter reading doesn’t go
outside the ALC zone (see right).
e
Release [PTT] (microphone) to return to receive.
[TRANSMIT]
[RF PWR]
[MIC GAIN]
[TX] indicator
ALC zone
Before transmitting, monitor your selected oper-
ating frequency to make sure transmitting won’t
cause interference to other stations on the same
frequency. It’s good Amateur practice to listen
first, and then, even if nothing is heard, ask “is
the frequency in use” once or twice, before you
begin operating on that frequency.
IC-7400.qxd 02.4.2 11:35 Page 25
