Receiving And Transmitting - Icom IC-M412 Instruction Manual

n Receiving and transmitting
CAUTION:
Transmitting without an antenna may dam-
age the transceiver.
q Rotate [VOL] to turn ON the power.
w Set the audio and squelch levels.
➥ Rotate [SQL] fully counterclockwise.
➥ Rotate [VOL] to adjust the audio output level.
➥ Rotate [SQL] clockwise until the noise disappears.
While in the DSC operation, please make sure you set
the squelch correctly.
e Push [U/I/C] (both [Y] and [Z]) to change the channel
group. (p. 6)
r Push [Y] or [Z] to select a desired channel. (pp. 5, 6, 52)
• When receiving a signal, "
from the speaker.
• Further adjustment of [VOL] may be necessary.
t Push [HI/LO] on the microphone 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 Hold down [PTT] to transmit, then speak into the micro-
phone (*).
• " " appears.
• Channel 70 cannot be used for transmission other than DSC.
u Release [PTT] to receive.
" appears and audio is emitted
IMPORTANT: To maximize the readability of your trans-
mitted signal, pause a few seconds after holding down
[PTT], hold the microphone 5 to 10 cm from your mouth
and speak into the microphone (*) at a normal voice
level.
e r
4 NOTE for TOT (Time-out Timer) function
The TOT function inhibits continuous transmission over a
preset time period after the transmission starts.
A beep sounds 10 seconds before the
vates, to indicate the transmission will be shut down and
"TOT" appears on the channel comment indicator. Transmis-
sion is not possible for 10 seconds after this transmission
shut down.
BASIC OPERATION
q y u
w r t
M: Microphone
TOT function acti-
3
3
M
7