Icom IC-M422 Marine Radio User Manual


 
45
12
COMMANDMIC IIHM-157
New2001
12
Receiving and transmitting
q Push [PWR] for 2 sec. to turn power ON.
w Set the audio and squelch levels.
Push [SQL
L], then push [
ZZ
] until the noise ap-
pears.
Push [VOL
PA/RX ], then push [
YY
] or [
ZZ
] to ad-
just the audio output level.
Push [SQL
L], then push [
YY
] until the noise dis-
appears.
e To change the channel group, push [CH/WX
U/I/C]
while pushing [H/L]. (p. 44)
r Push [Y] or [Z] to select the desired channel. (p. 44)
When receiving a signal, “” appears and audio is emitted
from the speaker.
Further adjustment of the audio level may be necessary.
t Push [LO/DX SCR
] to turn the receive Attenuator
function ON or OFF, if necessary.
•“LOCAL appears when the receive Attenuator function is in use.
y Push [H/L] to select the output power if necessary.
•“LOW appears when low power is selected.
Choose low power for short range communications, choose high
power for longer distance communications.
Some channels are for low power only.
u Push and hold [PTT] to transmit, then speak into the mi-
crophone.
•“ appears.
Channel 70 cannot be used for transmission other than DSC.
i Release [PTT] to receive.
Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CAN-
NOT be lawfully used by the general public in U.S.A. wa-
ters.
IMPORTANT: To maximize the readability of your trans-
mitted signal (voice), pause a few sec. after pushing [PTT],
hold the microphone 2 to 4 inches (5 to 10 cm) from your
mouth and speak at a normal voice level.
w Set volume
w Set squelch
t Turn attenuator
function
y Set output power
e Select channel
group
e Select channel
group
q Turn power ON
w Set volume
and squelch
r Set channel
u Push to
transmit
i Release
to receive
Microphone
IC
DW
MONI
DIM
MONI
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