UNICOM CB-320, Инструкция по эксплуатации

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CB-320 INSTRUCTION MANUAL PAGE 15 PAGE 14 CB-320 INSTRUCTION MANUAL
Duplex can be enabled or disabled on individual channels. When Duplex is enabled on
the selected channel,
F is displayed.
The Duplex mode is set through the Menu. Please refer to the Menu options further be-
low.
Simplex/Duplex Range Comparison
SCANNING
Channel scanning allows you to monitor all channels for incoming signals.
NOTE: While the radio is scanning, by pressing the MENU/EXIT key will stop the scan-
ning or pressing the UP/DOWN key will change the scan direction.
TO ADD OR REMOVE SCAN CHANNELS
NOTE: By default, all channels are in the scan memory.
1. Press the UP or DOWN keys to select the desired channel. Channels with the icon
SCN visible are already in the scan memory while those that do not display the icon
are not presently stored in the scan memory.
2. When the desired channel is displayed, press
MENU
, go to option “
SC.ADD
”, press
MENU again and select ADD to add the selected channel to the scan memory or DEL
to remove it from the scan memory.
TO SCAN
Press and hold the F2 key for 2 seconds, then channel numbers will change as the radio
scans through the channels. To change the scan direction while scanning, briefly press
UP
or
DOWN
.
To stop scanning, briefly press
EXIT
then the radio will return to normal operation.
SCANNING FEATURES
y If a signal is received, the scan is paused allowing you to transmit and receive on that
channel. Once the channel has been inactive for 5 seconds the scan will automatically
resume.
y Pressing the
PTT
switch while the radio is scanning will stop the scanning and start
to transmit on that channel. The scan will not resume.
y If the scan is paused on a busy channel that you don’t wish to listen to, press the UP
or DOWN keys to ‘skip’ over the channel and continue scanning after 5 seconds.
TIP:
The Scan mode will reduce the overall battery life because the Standby (battery sav-
er) feature is overridden. If the battery is running low you should avoid scanning to
conserve power.
CTCSS AND DCS
CTCSS (Continuous Tone Coded Squelch System) and DCS (Digital Coded Squelch) are
similar Squelch quieting systems that allow groups of users to share the same channel
without disturbing each other. The CTCSS system uses 1 of 50 low frequency tones to
open and close the Squelch on the radio. The DCS system is similar to CTCSS but uses 1
of 104 digital codes to control the Squelch. When CTCSS or DCS is enabled on your ra-
dio, only signals that are using the same code as your radio will be heard in the speaker
and the Squelch will remain closed to all other signals.
NOTE: CTCSS and DCS codes do not prevent others from hearing your transmission.
CTCSS/DCS tones are switched off by default. To use CTCSS/DCS you must first enable
a suitable CTCSS/DCS code using the Menu (see Menu options for more details). Your
choice of CTCSS or DCS will largely depend on which is currently being used by other
radios in your group. If neither system is currently in use, you can make your own choice.
There is no difference in performance between the two systems. Once a CTCSS or DCS
code has been enabled, the display will show
CT
(for CTCSS) or
DCS
(for DCS).