GME TX4500WS - Manual (Page 19)

t X 4 5 0 0 s I n s t r u c t I o n m A n uA l PA G E 1 9
To return your radio to the Quiet mode, briefly
press F then press QUIET.
will re-appear on
the display.
Scanning in the Quiet Mode
the radio will allow you to scan while the Quiet
mode is active. using this feature you can monitor a
group of Quiet channels or a combination of Quiet
and open channels.
To Scan in the Quiet Mode
1. Pre-select the required os or Gs scan group
(briefly press F then OS/ gS).
2. Program your scan channels as described under
the scanning section.
3. From those channels, select the ones you wish
to remain Quiet and tag each one for QuIEt
operation (press F then press and hold QUIET).
4. select a tagged channel and activate the Quiet
mode (briefly press F the press QUIET).
5. Press the ScAN key. the radio will begin
scanning and ‘scAn’ and will be displayed,
indicating the radio is scanning in the Quiet mode.
Receiving Signals while Scanning in the
Quiet Mode
• If a normal signal is received on an open channel,
scanning will pause while the channel is busy and
will resume scanning 5 seconds after the channel
becomes clear. (If you were scanning in Group
scan mode, the radio may switch between the
open channel and the Priority channel - this is
normal).
• If a normal signal is received on a Quiet channel
but your selcall Ident is not detected, the signal
will be ignored and scanning will continue.
• If a signal containing your selcall Ident is received
on any channel - open or Quiet - both scanning
and Quiet modes will be cancelled and the receiver
will stay on that channel. In addition, the alarm
will beep to alert you to the call and the callers
Ident or AlPhA label will be displayed. the
channel will now be open for normal transmission
and reception.
TIP: to ensure reliable selcall detection when
scanning in the Quiet mode, it is recommended
that you restrict the number of channels in the scan
group to 4 or less.
GrOUP CALLING
the selcall system includes a Group call function
which allows you to call up to 1000 radios
simultaneously. this can be useful in an emergency
situation where you may need to transmit a message
to a large number of radios in your group.
By default, your radio is factory-set to allow up to
10 radios to be called at once. If your application
requires more, you can arrange for your Dealer to
re-program this option to allow 100 or 1000 radios
to be called. the following description assumes the
default Group call setting of 10 radios.
the Group call function works by allowing you
to enter a special ‘group code’ into the last digit
positions of the selcall Ident you are sending. the
‘group code’ appears as an ‘A’ when displayed in
the radio. when this ‘group code’ is received, it
substitutes for all other numbers in that position.
As long as the first 4 digits of the selcall you are
sending match those of the radios you are calling,
their selcall alarm will be activated as if their full 5
digit selcall Idents had been received.
to achieve this, the 10 radios you are calling must
be programmed with sequentially numbered selcall
Idents.
e.g. 14530, 14531, 14532, 14533 . . --> , 14539
• transmitting the selcall Ident 14531 will only
activate the alarm in the radio with the selcall
Ident of 14531.
• transmitting 1453A will activate the alarms in all
radios with Idents 14530 through 14539 (a total
of 10 radios).
If the radios in your fleet do not have sequentially
numbered selcall Idents and you want to make use
of this function, you will need to re-program the
selcall Idents in your radios.
Programming and sending group calls
the process for entering a Group call Ident is the
same as entering a normal selcall Ident.
1. Press the cALL button. is displayed, along
with the last sent or received selcall Ident. If an
AlPhA label is displayed you will need to press F
then ALPHA to switch to numeric mode.
2. Press and hold the channel control until the
radio beeps. the right-hand digit of the selcall
Ident will flash.
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