Adjusting The Squelch Level; Automatic Backlight; Lock Function - Icom ic-m88 Instruction Manua

■ Adjusting the squelch level

The IC-M88 has a squelch circuitry. In order to receive the sig-
nals properly, as well as for the efficient scan, the squelch must
be adjusted to the proper level.
q Push [SQL], then adjust the squelch level with [Y]/[Z].
- "SL" indicator is displayed.
- There are 11 squelch levels. OP is completely open, 10 is the
tightest squelch level.
- When no key is pushed for 5 seconds, the transceiver returns to
the normal condition.
w Push [SQL] again to return to the normal condition.

■ Automatic backlight

This function is convenient for nighttime operation. The auto-
matic backlight can be activated in the Set mode. (p. 19)
➥ Push any key except [PTT] to turn ON the backlight.
• The backlight is automatically turned OFF after 5 seconds of in-
activity.

■ Lock function

This function electronically locks all keys (except for [PTT],
[SQL] and [H/L• ]) to prevent accidental channel
LOCK
changes and function access.
• Hold down [H/L• ] for 1 second to turn the lock function ON
LOCK
and OFF.
BASIC OPERATION
Displayed when the
Lock function is ON.
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