Icom IC-M73 Plus - Manual (Page 21)

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BASIC OPERATION
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Adjusting the squelch level
To adjust the transceiver’s squelch level, use the [Y]/[Z]
keys, as described below. In order to properly receive
signals, as well as for the scan to function effectively
operate, the squelch must be adjusted to the proper level.
q Push [ ], then adjust the squelch level with [Y]/[Z].
- “SQL” and the squelch level are displayed.
- There are 11 squelch levels to choose from: OP is completely
open; 10 is tight squelch; 1 is loose squelch level.
- When no key is pushed for 5 seconds, the transceiver returns to
its normal condition.
w Push [ ] again to return to normal operating mode.
Push
Shows the squelch
level.
Appears during squelch
level adjustment
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AquaQuake water draining function
The AquaQuake water draining function clears water away
from the speaker grill. Without this function, water may
muffle the sound coming from the speaker. The transceiver
emits a vibrating beep when this function is activated.
➥ While holding down [F], the AquaQuake function is acti-
vated to clear water away from the speaker grill.
• Beep sounds, regardless of the volume level setting.
• Activates for 10 seconds in maximum to drain water.
• The transceiver never accepts key operation while the Aqua-
Quake function is activated.
• The AquaQuake function can not be activated when an optional
speaker-microphone is connected.