Adjusting The Volume Level; Adjusting The Squelch Level; Receiving And Transmitting - Icom iC-M91D Instruction Manual

Adjusting the volume level

■
The volume level can be adjusted with [VOL/SQL] and [∫]/
[√]/[Ω]/[≈] keys.
q Push [VOL/SQL] once to enter the volume adjustment
mode, then adjust the volume level with [∫]/[√] or [Ω]/[≈].
• The transceiver has 20 volume levels and OFF.
• If no key operation is performed for 5 seconds, the transceiver
sets the selected level, and returns to the normal mode.
w Push [ENTER] to set, and exit the volume adjustment mode.
• Push [CLEAR] to cancel.

Adjusting the squelch level

■
The squelch level can be adjusted with [VOL/SQL] and [∫]/
[√]/[Ω]/[≈] keys.
In order to receive signals properly, as well as for the scan
to function effectively, the squelch must be adjusted to its
proper level.
Push [VOL/SQL] twice to enter the squelch adjustment
q
mode, then adjust the squelch level with [∫]/[√] or [Ω]/[≈].
• The transceiver has 11 squelch levels: OPEN is completely
open, 10 is tight squelch and 1 is loose squelch.
• If no key operation is performed for 5 seconds, the transceiver
sets the selected level, and returns to the normal mode.
w Push [ENTER] to set, and exit the squelch adjustment mode.
• Push [CLEAR] to cancel.

Receiving and transmitting

■
CAUTION: Transmitting without an antenna will damage
the transceiver.
Hold down [ ] for 1 second to turn power ON.
q
Set the volume and squelch levels with [VOL/SQL].
w
Push [Y](CH)/[Z](CH) to select the desired channel.
e
• Further adjustment of the audio may be necessary at this point.
r Select HI/LO to select the output power if necessary.
[ ]
• "HI" appears when high power is selected; "LOW" 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.
t Hold down [PTT] to transmit, then speak into the microphone.
• "TX" appears.
• Channel 70 cannot be used for transmission.
y Release [PTT] to receive.
Information
✓
The Noise Cancel function reduces random noise com-
➥
ponents in the transmit and/or receive signal. See page
80 for details
The transceiver monitors channel 70 every specific
➥
time period even when standing by on an operating
channel.
• "DSC CHECK" is displayed when channel 70 is busy.
• The channel 70 monitoring configuration can be changed in
DSC Settings. See page 64 for details.
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