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10
4
BASIC OPERATION
■
Lock function
This function electronically locks all switches (except for
[PTT], [SQL•
MONI
] and [Hi/Lo•
]) to prevent accidental
channel changes and function access.
➥
Push [Hi/Lo•
] for 1 sec. to turn the lock function ON
and OFF.
■
Signal strength indicator
function
The received signal strength level is indicated by number of
bars as below.
This indicator can be hidden by using the set mode (p. 13) if
desired.
■
Monitor function
The monitor function releases the noise squelch mute to
check the volume level. See p. 12 for details of the monitor
switch action.
➥
Push [SQL•
MONI
] for 1 sec. to activate the monitor function.
• “
” appears and audio is emitted.
■
VOX function
(FOR ON-BOARD USE ONLY)
The VOX function (voice operated transmission) starts trans-
mission without pushing [PTT] when you speak into micro-
phone; then automatically returns to receive when you stop
speaking (hands-free operation becomes possible).
NOTE:
An optional headset and optional headset adapter
(OPC-1392) is required for the VOX operation.
➥
Push and hold [SQL•
MONI
], then push [Hi/Lo•
] to turn
the VOX function ON/OFF while connecting the headset
and optional headset adapter to [MIC/SP] connector.
• “VOX” appears on the LCD while the VOX function turns ON.
• The “VOX gain” and “VOX delay” can be set on the SET mode.
(p. 14)
Indication
Strong
Middle
Weak
No signal or
very weak
Signal
strength
Appears while the
lock function is used.
Push
for 1 sec.
IC-GM1600E-1.qxd 2006.07.14 2:28 PM Page 10