Icom IC-M424G Instruction Manual - Page 22

Receiving and transmitting - 21

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4 BASIC OPERATION ■ Receiving and transmitting CAUTION: Transmitting without an antenna will damage the transceiver. qqHold down [PWR] (Dial) to turn ON the power. wwSet the audio and squelch levels. (p. 11) ➥➥ First, open the squelch. Then, adjust the audio output level. After that, adjust the squelch level until the noise just disappears. eeChange the channel group. (p. 10) rrPush to select a channel. (pp. 9, 10) • Pushing [Y]/[Z] on the microphone also selects a channel. • W hen receiving a signal, " " is displayed and audio is heard. • Further adjustment of the volume level may be necessary. ttPush [LO/DX] to turn the receive Attenuator function ON or OFF, if necessary. • For only U.S.A. and Australian version transceivers. • "LOCAL" is displayed when the receive Attenuator function is ON. yyPush [HI/LO] to select the output power, if necessary. • "25W" is displayed when high power is selected, and "1W" is displayed when low power is selected. • Choose low power for short range communications, choose high power for longer distance communications. • Some channels are for only low power. uuHold down [PTT] to transmit, then speak at your normal voice level. • " " is displayed. • Channel 70 cannot be used for transmission other than DSC. 12 iiRelease [PTT] to receive. Simplex channels, 3, 21, 23, 61, 64, 81, 82, and 83 CANNOT be lawfully used by the general public in U.S.A. waters. IMPORTANT: To maximize the readability of your transmitted signal, pause a few seconds after pushing [PTT], hold the microphone 5 to 10 cm (2 to 4 inches) from your mouth and speak at your normal voice level. ✓✓ NOTE for the TOT (Time-out Timer) function The TOT function inhibits continuous transmission beyond a preset time period after the transmission starts. 10 seconds before transmission is cutoff, a beep sounds to indicate the transmission will be shut down and "TOT" is displayed in the channel name field. Transmission is not possible for 10 seconds after this shut down. r u i Microphone t y wq r y

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12
4
BASIC OPERATION
■
Receiving and transmitting
CAUTION:
Transmitting without an antenna will damage
the transceiver.
Hold down [PWR] (Dial) to turn ON the power.
q
Set the audio and squelch levels. (p. 11)
w
First, open the squelch. Then, adjust the audio output
➥
level. After that, adjust the squelch level until the noise
just disappears.
Change the channel group. (p. 10)
e
Push [
r
∫
]/[
√
] to select a channel. (pp. 9, 10)
• Pushing [
Y
]/[
Z
]
on the microphone also selects a channel.
• When receiving a signal, “
” is displayed and audio is
heard.
• Further adjustment of the volume level may be necessary.
Push [LO/DX] to turn the receive Attenuator function ON
t
or OFF, if necessary.
• For only U.S.A. and Australian version transceivers.
•“LOCAL” is displayed when the receive Attenuator function is
ON.
Push [HI/LO] to select the output power, if necessary.
y
• “25W” is displayed when high power is selected, and “1W” is
displayed when low power is selected.
• Choose low power for short range communications, choose high
power for longer distance communications.
• Some channels are for only low power.
Hold down [PTT] to transmit, then speak at your normal
u
voice level.
•“
” is displayed.
• Channel 70 cannot be used for transmission other than DSC.
Release [PTT] to receive.
i
Simplex channels, 3, 21, 23, 61, 64, 81, 82, and 83 CANNOT
be lawfully used by the general public in U.S.A. waters.
IMPORTANT:
To maximize the readability of your transmit-
ted signal, pause a few seconds after pushing [PTT], hold
the microphone 5 to 10 cm (2 to 4 inches) from your mouth
and speak at your normal voice level.
NOTE for the TOT (Time-out Timer) function
✓
The TOT function inhibits continuous transmission beyond a
preset time period after the transmission starts.
10 seconds before transmission is cutoff, a beep sounds
to
indicate the transmission will be shut down and “TOT” is dis-
played in the channel name field. Transmission is not possible
for 10 seconds after this shut down.
Microphone
t
y
q
w
i
u
r
y
r