GME TX3345 - Manual (Page 18)

PA G E 1 8 I N S T R U C T I O N M A N UA L T X 3 3 4 5
displayed indicating that the radio is scanning in the Quiet
mode.
Receiving signals while scanning in 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 could 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 required 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 is
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. However
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.
Sending a Group Call 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
MENU
F
then SQL
ALPHA
to
switch to Numeric Mode.
2. Press and hold the LVL
PRI
key until the radio beeps. The
right-hand digit of the SelCall Ident will flash.
3. Press the or keys to select ‘A’ in the flashing digit
position. This is the special code that will create the Group Call.
4. Briefly press the LVL
PRI
key again to select the next digit position.
5. Continue entering the other 4 digits as required. The
SelCall number is now ready to send.
6. Press and hold the CALL button. A long beep will be
heard and the radio will transmit the SelCall Ident.
Programming group calls for 100 radios (when this is
enabled in your radio) is identical except that you will need
to select ‘A’ for the last 2 digits (eg. 123AA). For 1000 radios
you will need to select ‘A’ for last 3 digits (eg. 12AAA).
e.g.
Sending Ident 145AA will call 100 radios with Idents 14500 ->
14599
Sending Ident 14AAA will call 1000 radios with Idents 14000 ->
14999
46397-2_TX3345_InsMan.indd 18 11/09/13 12:04 PM