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

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BASIC OPERATION
New2001
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n Microphone Lock function
The Microphone Lock function electrically locks the [Y] and
[Z] keys on the supplied microphone. This prevents acciden-
tal 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.
[HI/LO]
[Y]/[Z]
n Display backlight
The function display and keys can be backlit for better visibil-
ity under low light conditions.
You can also adjust the display backlight in the Set mode.
(p. 46)
➥ While holding down [SCAN], push [Y] or [Z] to adjust the
brightness of the LCD and key backlight.
 •Thebacklightisadjustablein4levelsandOFF.
n AquaQuake water draining
function
The transceiver uses a technology to clear water away from
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 transceiver
makes a vibrating noise when this function is being used.
➥ While holding down both [Y] and [Z] on the transceiver,
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.