GME TX3400 - Manual (Page 13)

13
GROUP CALLS
SCANNING IN THE QUIET MODE
The TX3400 will allow you to scan while the
QUIET mode is active. You can then monitor a
group of Quiet channels or a combination of
Quiet and Open channels.
To Scan in the QUIET Mode:
1. Press the OS/GS key to select the required
Scan group.
2. Select the channels you wish to remain
Quiet and tag each one with ‘Q’.
3. With a tagged channel selected, briefly
press the Volume/Quiet knob to activate
the QUIET Mode.
4. Now press the SCAN key. The radio will
begin scanning and ‘SCAN’ will be
displayed.
• 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 GS 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 will
be displayed. The channel will now be open
for normal transmission and reception.
NOTE: To ensure reliable Selcall detection
when scanning, it is recommended that you
restrict the number of channels in the Scan
group.
In Open Scan Mode: 10 Channels
In Group Scan Mode: 8 Channel plus the
Priority Channel
The TX3400’s Selcall system includes a Group
Call function which allows you to call up to 10
radios simultaneously. This could be useful in
an emergency situation where you may need to
transmit a message to a number of radios in
your group.
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 any other
number 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 alarms 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.
i.e. 12030, 12031, 12032, 10233 . . --> , 12039
e.g.
• Transmitting the Selcall Ident 12031 will only
activate the alarm in the radio with the
Selcall Ident of 12031.
• Transmitting 1203A will activate the alarms
in all radios with Idents 12030 through
12039 (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 can
arrange for your dealer to re-program your
radios.