Additional Operations
18
Locking / Unlocking the Radio’s Function
Locking the radio will disable all buttons except
the
Toggle Light / Enter Button (4)
,
Monitor But-
ton (5)
,
Push-To-Talk (PTT) Button (6)
and .
Pressing a locked button will result being
shown on the
LCD Screen (18)
.To lock / unlock
the radio:
• Press and hold (for about 2 seconds) until two
beeps are heard.
NOTE
The
lock
/
unlock
status remains unchanged even
when the power is turned off.
Changing Squelch Modes
Squelch acts as a kind of filtering system which helps
to control the amount of signals the radio receives.
Configuring the radio to receive only the desired sig-
nals minimizes interference from other users of the
same channel.
This radio supports
Carrier Squelch (CSQ), Coded
Squelch - Tone Private-Line (PL)
,
Digital Private-Line
(DPL)
and
Signalling Squelch - Voice Selective Call
(SelCall)
operations on a per channel basis.
Carrier Squelch
transmission allows all radios tuned to
the selected receive channel (frequency) to hear the
conversation.
Coded Squelch
transmission only allows
radio(s) having the same
PL / DPL
code on the
selected receive channel (frequency) to hear the con-
versation. S
ignalling Squelch
transmission can only be
decoded by radios with the valid
Voice Selective Call
(SelCall)
identification code (see
“Voice Selective
Call (Optional)”
on page 27).
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