Microphone Lock Function; Display Backlight; Aquaquake Water Draining Function; Basic Operation - Icom IC-M412 Instruction Manual

n Microphone Lock function
The Microphone Lock function electrically locks the [Y] and
[Z] keys on the supplied microphone. This prevents acci-
dental channel changes and function access.
➥ While holding down [HI/LO] on the microphone, turn ON
the power to toggle the Microphone Lock function ON or
OFF.
[Y]/[Z]
n Display backlight
The function display and keys can be backlit for better visibil-
ity under low light conditions.
Display backlight is also adjustable via the Set mode. (p. 43)
➥ While holding down [SCAN], push [Y] or [Z] to adjust
n AquaQuake water draining
The IC-M412 uses a technology to clear water away from
[HI/LO]
the speaker grill: AquaQuake. AquaQuake helps drain water
away from the speaker housing (water that might otherwise
muffle the sound coming from the speaker). The IC-M412
emits a vibrating noise when this function is being used.
➥ While holding down both [Y] and [Z] on the transceiver,

BASIC OPERATION

the brightness of the LCD and key backlight.
• The backlight is adjustable in 4 levels and OFF.
function
turn ON the power to activate the AquaQuake function.
• While continuing to push [Y] and [Z], a low beep tone sounds
to drain water, regardless of the [VOL] control setting.
• While the AquaQuake function is activated, the transceiver
never accepts any key operations.
• Release [Y] and [Z] to cancel the AquaQuake function.
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