Icom IC-F21GM - Manual (Page 27)

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5
OPERATION
‘ ‘ Receiving and transmitting
NOTE: Transmitting without an antenna may damage the trans-
ceiver. See p.4 for antenna attachment.
Turn power ON as described on p. 2.
Program the SIMPLEX/DUPLEX OPERATION and CTCSS
/DTCS tone number (select CH 0 if you will not use the CTCSS
function) before operation.
Receiving:
q Select the desired channel.
w Listen for a transmission and adjust [VOL] to a comfortable lis-
tening level.
• When no transmission is heard, push and hold [MONI] while
adjusting [VOL].
The transceiver is now set to receive desired calls on the selected
channel.
Transmitting:
Wait for the channel to become clear to avoid interference.
e While pushing and holding [PTT], speak into the microphone at a
normal voice level.
r Release [PTT] to return to receive.
IMPORTANT: To maximize the readability of your transmitted sig-
nal, pause a few sec. after pushing [PTT], hold the microphone 10
to 15 cm from your mouth and speak at a normal voice level.