Group Calling; Programming And Sending Group Calls - GME GA9800 Instruction Manual

if you wish to respond to the calling radio using selcall,
press and hold the call key 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 key .
to return your radio to the QuiEt mode
Briefly press the F key followed by the QuiEt key . 'quiEt'
will re-appear on the display .
scanning in QuiEt moDE
the tX3420 will allow you to scan while 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 QuiEt mode:
1 . Pre-select the scan mode .
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 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 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 caller's ident or AlPhA name will
be displayed . the channel will now be open for normal
transmission and reception .
PA G E 1 2
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 .
the tX3420'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 retailer 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 '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 .
e .g . 12330, 12331, 12332, 12333 . . --> , 12339
• Transmitting the Selcall Ident 12331 will only activate the
alarm in the radio with the selcall ident of 12331 .
• Transmitting 1233A will activate the alarms in all radios
with idents 12330 through 12339 (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 retailer 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 . 'cAll to' is displayed, along
with the last sent or received selcall ident .
2 . Enter the required selcall ident as follows:
(a) Press the channel knob until the radio beeps .
the right-hand digit of the selcall ident will flash .
(b) rotate the channel knob to select 'A' in the
flashing digit position . this is the special code
that will create the Group call .
i n s t r u c t i o n m A n u A l

grOup CallINg

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