t X 4 8 0 0
i n s t r u c t i o n m A n uA l
PA G E 9
if you are able to program scan channels, please read the
following section .
To program the Scan Channels
1 . select the required scan group using the
OS/GS
key .
(if your radio has alphanumeric labels, refer to the
section on changing the scan group on the
previous page) .
2 . select the required channel using the channel buttons .
3 . Press and HolD the
Scan
key until a high beep is
heard .
M
will appear on the display to indicate the
channel is now stored in memory .
4 . repeat steps 2 and 3 to add other channels to the
scan memory .
To remove Channels from the Scan Memory
1 . select the required scan group - either open scan (os)
or Group scan (Gs) .
2 . select the required channel using the channel buttons .
check that
M
is displayed indicating that the channel
is in the scan memory .
3 . Press and HolD the
Scan
key until a low beep is
heard .
M
will disappear from the display to indicate
the channel is no longer in memory .
4 . repeat steps 2 and 3 to remove other channels from
the scan memory .
Selecting Scan
once you have your selected groups programmed, you
can scan the channels in these groups using the
scan key .
To begin Scanning
1 . Briefly press the
Scan
key . A high beep will be heard
and the radio will begin scanning .
2 . Press the
OS/GS
key (if fitted) to select the required
scan group .
OS
or
GS
will be displayed .
To cancel Scanning
Briefly press the
Scan
key again . A low beep will be
heard and the radio will stop scanning
Scanning in Open Scan Mode
While scanning in
Open Scan
mode, the radio will
display rapidly changing numbers to indicate the
channels being scanned . in addition the lower section of
the lcD will display
OS
(indicating the open scan mode
is selected), along with the number of the last selected
channel . if any channels have alphanumeric labels, the
labels will not be displayed while scanning .
Receiving on a Busy Channel
if a signal is received, the receiver will lock onto that
channel and will remain there for as long as the channel
is busy - and for 5 seconds after the transmission ceases .
this allows the tX4800 to hold the channel between
short breaks in the conversation . once the channel has
remained clear for 5 seconds, the radio will
resume scanning .
Skipping over a Busy Channel
if you don't wish to listen to a busy channel, you can
skip over it by briefly pressing the
Skip
button on the
microphone . the receiver will immediately
resume scanning .
Holding onto a Busy Channel
to manually hold a busy channel, briefly press the Ptt
switch . scanning will pause and
M
will be displayed .
You can now transmit and receive on that channel in the
usual way .
SCAN
will still be displayed to remind you
that the scan function is only inhibited temporarily .
to resume scanning press the
Skip
button on the
microphone .
M
will disappear and scanning will resume .
To cancel Scanning
Briefly press the
Scan
key .
•
if the radio was stopped on a busy channel when scan
was cancelled, it will remain on that channel .
•
if the radio was scanning when scan was cancelled, it
will return to the last selected channel (as displayed in
the bottom right of the display) .
Scanning in Group Scan Mode
scanning in Group scan mode will allow you to
transmit and receive normally on the working (priority)
channel but will also let you scan and listen to several
other channels when the working channel is free . the
receiver will continue to scan the other Group scan
channels onlY WHilE tHErE ArE no siGnAls on tHE
WorKinG cHAnnEl . Pressing the Ptt switch at any
time will take you straight to the working channel .
indicates selected channel is stored in memory
Содержание TX4800
Страница 1: ...COMMERCIAL RADIO TX4800 INSTRUCTION MANUAL...
