Icom IC-M24 Instruction Manual - Page 21

BASIC OPERATION 4 ■ Lock function This function electronically locks all keys (except for [PTT], [VOL/ SQL], [MONI] (VOL/SQL), [ ] (Hi/Lo) and [Y] or [Z]*) to prevent accidental changing of the channel and function access. * Only in the volume or squelch adjustment mode, and volume loud and Volume Mute functions. ➥ Hold down [ ] (Hi/Lo) for 1 second to turn the Lock function ON and OFF. Appears while the Lock function is activated. Hold down for 1 second ■ Monitor function The Monitor function opens the squelch. The monitor key action can be selected in the Set mode. (p. 19) ➥ The Monitor function is activated by holding down [MONI] (VOL/SQL). • " " blinks and the squelch opens. Blinks while the monitor function is activated. ■ Automatic backlighting 1 This function lights the function display and keys, and is con- 2 venient for night-time operation. The automatic backlighting 3 can be activated in the Set mode. (p. 20) ➥ Push any key except for [PTT] to turn ON the backlight. 4 • The backlight is automatically turned OFF after 5 seconds of 5 inactivity. 6 ■ AquaQuake Water Draining function 7 8 The AquaQuake Water Draining function removes water from the speaker grill. Without this function, water may muffle 9 the sound coming from the speaker. The transceiver makes 10 a vibrating sound when this function is activated. ➥ Hold down both [SCAN] and [Hi/Lo]. 11 • A low vibration tone sounds for 9 seconds to drain water, re- 12 gardless of the volume level setting. • The transceiver does not accept key operations while the 13 AquaQuake Water Draining function is activated. 14 15 16 Hold down 13