PA G E 1 6
I n s t r u c t I o n m A n uA l
t X 4 5 0 0
De-activating the Quiet Mode
1. select any channel that has been tagged for Quiet
operation. ‘Q’ and
will be displayed.
2. Briefly press
F
then press
QUIET
.
will disappear
from the display and all channels that were tagged
for Quiet operation will now operate normally again.
Receiving signals in the Quiet Mode
•
If a normal signal is received on a QuIEt channel, the
channel will appear busy (the icon will be visible)
but no sound will be heard from the speaker.
•
If a normal signal is received on an open channel
(one that is not tagged with ‘Q’) the signal will be
heard in the usual way.
•
If your selcall Ident is received on any channel - open
or QuIEt - the Quiet mode will be cancelled and the
alarm will beep to alert you to the call. In addition,
the caller’s Ident or AlPHA label will be displayed. All
channels will now be open for normal transmission
and reception.
If you wish to respond to the caller using selcall, press
and hold the
CALL
button until the radio beeps. the
caller’s 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
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.
