Icom IM402A Marine Radio User Manual


 
8
3 BASIC OPERATION
New2001
Receiving and transmitting
CAUTION: Transmitting without an antenna may dam-
age the transceiver.
q Rotate [VOL] to turn power ON.
w Set the audio and squelch levels.
Rotate [SQL] fully counterclockwise in advance.
Rotate [VOL] to adjust the audio output level.
Rotate [SQL] clockwise until the noise disappears.
e To change the channel group, push both [Y] and [Z] on
the transceiver. (p. 7)
r Push [Y] or [Z] to select the desired channel. (p. 6)
When receiving a signal, “” appears and audio is emitted
from the speaker.
Further adjustment of [VOL] may be necessary.
t Push [HI/LO] 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.
y Push and hold [PTT] to transmit, then speak into the mi-
crophone (M).
•“ appears.
Channel 70 cannot be used for transmission other than DSC.
u 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, pause a few sec. after pushing [PTT], hold
the microphone 2 to 4 inches (5 to 10 cm) from your mouth
and speak into the microphone (M) at a normal voice level.
u
rt
M
yq
M: Microphone
w
re
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