GME TX4600 - Manual (Page 16)

PAGE 16 INSTRUCTION MANUAL TX4600
If you wish to respond to the calling radio using
Selcall, press and hold the call button for 1.5
seconds until the radio beeps. The callers Ident
will be transmitted back to them causing the
alarm in their radio to be activated.
To cancel the alarm on your radio
Briefly press the PTT.
To return your radio to the QUIET mode
Briefly press the F (Function) key followed by the
QUIET key. ‘QUIET’ will re-appear on the display.
SCANNING IN THE QUIET MODE
The TX4600 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. Preselect the Group Scan mode (see MENU
settings).
2. Select the channels you wish to scan and
store them in the Scan memory.
3. From those channels, select the ones you wish
to remain Quiet and tag each one for QUIET
operation.
4. Select a tagged channel and activate the
Quiet Mode (press the F key followed by the
QUIET key).
5. Press the SCAN key. The radio will begin
scanning and ‘SCAN’ and ‘QUIET’ 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 Name 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 TX4600’s 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
position 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 the last digit
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.
42333-8_TX4600 IM.indd 16 28/08/13 11:21 AM