Lock Function; Signal Strength Indicator Function; Monitor Function; Backlight Function - Icom IC-GM1600 Instruction Manual

4

BASIC OPERATION

■ Lock function

The Lock function electronically locks all keys (except for
[PTT], [SQL• ] and [Hi/Lo•
MONI
you from accidentally changing the channel, or accessing
the functions.
➥ Push [Hi/Lo• ] for 1 sec. to turn the lock function ON
and OFF.
Push
for 1 sec.
■ Signal strength indicator
The received signal strength level is displayed by number of
bars, as shown below. Set the signal strength indicator to
ON in the SET mode (p. 14).
• Only the antenna mark appears when no signal, or a very weak
signal, is received.
Indication
Signal
Strong
strength
10
]). This function prevents
Appears while the lock
function is used.
No signal or
Middle Weak
very weak

■ Monitor function

The Monitor function temporarily cancels the Squelch func-
tion to check for weak signals. See page 12 for details of the
monitor switch action.
➥ Hold down [SQL• ] to turn ON the Monitor function.
MONI
• The Monitor function is ON while [SQL•MONI] is held down.
• " " appears and audio is emitted.

■ Backlight function

This function is convenient for the nighttime operation. The
backlight brightness can be adjusted in the SET mode. (p. 12)
➥ Push any key except for [PTT] to turn the backlight ON.
• " " appears and audio is emitted. The backlight is automati-
cally turned OFF after 5 seconds of inactivity.