Adjusting The Squelch Level; Automatic Backlighting; Lock Function - Icom IC-M87 Instruction Manual

4
BASIC OPERATION

■ Adjusting the squelch level

The IC-M87 has a squelch even though there is no control
knob for it. In order to receive signals properly, as well as for
the scan to function effectively, the squelch must be adjusted
to the proper level.
q Push [SQL], then adjust the squelch level with [Y]/[Z].
- "SL" indicator appears.
- There are 11 squelch levels to choose from: OP is completely
open; 10 is the tight squelch level.
- When no key is pushed for 5 sec., the transceiver returns to
normal condition.
w Push [SQL] again to return to normal condition.

■ Automatic backlighting

This function is convenient for nighttime operation. The auto-
matic backlighting can be activated in SET mode. (p. 19)
➥ Push any key except for [PTT] to turn the backlighting
ON.
• The backlighting is automatically turned OFF after 5 sec. of in-
activity.
11

■ Lock function

This function electronically locks all keys (except for [PTT],
[SQL] and [H/L• ]) to prevent accidental channel changes
LOCK
and function access.
➥ Push [H/L• ] for 1 sec. to turn the lock function ON
LOCK
and OFF.
Appears while the
lock function is used.