Hytera PD402i, Руководство пользователя

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10
Features and Operations
Squelch Level Adjustment
Description
Squelch Level Adjustment allows you to adjust the squelch threshold
required for the radio to be unmuted.
Generally, the higher squelch level requires stronger signal. If the squelch
level is set to
“
Open
”
(squelch level: 0), the speaker will keep unmuted
irrespective of the decoding conditions.
Operation
Press the programmed Adjust Squelch Level key to switch the level
among
“
Tight
”
,
”
Normal
”
and
”
Open
”
. When switching from
“
Tight
“
to
“
Open
“
, a low-pitched tone sounds followed by the
background noise; from
“
Open
“
to
“
Normal
“
, a high-pitched tone
sounds with the background noise fading; from
“
Normal
“
to
“
Tight
“
,
a high-pitched tone sounds.
Monitor
Description
Monitor allows you to set whether the radio can receive the weak signals
in order to monitor the radio.
Operation
Press the programmed Monitor key to enable the feature (a high-pitched
tone sounds); press this key again to disable the feature (a low-pitched
tone sounds).
CTCSS/ CDCSS
Description
CTCSS/CDCSS allows the radio to add signaling with a frequency lower
than that of the audio to the carrier. The speaker can be unmuted only
when the CTCSS/CDCSS received by the receiving party is matched
with that transmitted by the transmitting party.
Operation
Enable or disable this feature via CPS by your dealer.
Squelch Off
Description
Squelch Off allows the speaker of the radio to keep unmuted no matter
whether carrier is present.
Operation
●
Press the programmed Squelch Off key to enable the feature (a high-
pitched tone sounds) and sounds background noise. Press this key
again to disable the feature (a low-pitched tone sounds).
●
Press the programmed Squelch Off Momentary key to enable
the feature (a high-pitched tone sounds) and sounds background
noise. Press this key again to disable the feature (a low-pitched tone
sounds).