Icom IC-M423 - Microphone Lock Function

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BASIC OPERATION
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Repeat step r e to input all characters.
Push [ t Ω], [≈], [∫] or [√] to select “FINISH,” then push
[ENT] to set the name and return to the previous screen.
Microphone Lock function ■
The Microphone Lock function electrically locks [∫], [√] and
the [HI/LO] keys on the supplied microphone. This prevents
accidental channel changes and function access.
While holding down [HI/LO] on the microphone, hold down ➥
[PWR](Dial) to turn ON the transceiver and turn the Micro-
phone Lock function ON or OFF.
[HI/LO]
[Y]/[Z]