Ctcss/Dcs And Selective Call Operation; Reception; Transmission; Ctcss/Dcs Transmission - ALAN Electronics HP 106 Manuel D'utilisation

6 CTCSS/DCS and Selective Call operation

6.1 Reception

The radio may be set-up so that, during the operation with the
CTCSS/DCS and/or Selective Call, audio is enabled only when you recei-
ve the appropriate CTCSS/DCS tone and/or Selective Call. Speaker will
then remain muted until the correct CTCSS tone, the correct DCS code
and/or the appropriate selective call is received. As soon as this condi-
tion takes place, the speaker will be unmuted allowing you to hear the
message and the status LED will glow amber. In case of reception of
signals without the correct tone, the speaker will remain muted and the
status LED will glow green.
Depending on the programming, you can temporarily disable the
CTCSS/DCS and the selective call in order to monitor the radio traf-
fic. For details please refer to the paragraph 5.5.

6.2 Transmission

6.2.a CTCSS/DCS transmission
If your transceiver has been programmed to transmit a CTCSS tone or a
DCS code, it is not necessary to do anything. The CTCSS tone or the
DCS code is automatically sent every time you transmit (the device does
not show this condition).
6.2.b Sending a normal selective call
On your transceiver the MON and FUNC buttons could have been pro-
grammed to send, respectively, the selective call Nr.1 and Nr.2.
14 CTCSS/DCS and Selective Call operation
To send a selective call:
1) Ensure that the channel is not busy (otherwise you will cause an inter-
ference), verifying that the status LED is not glowing green or amber.
If the channel is not free, please wait until that condition takes place
(LED turned-off)
2) Keep the MON or FUNC button pressed until the device will produce
a beep (about 3 seconds), then release the button. The default
address of every button is automatically recalled.
During a call, the transceiver turns automatically on the transmission
(the status LED glows red), so it is not necessary to press the PTT but-
ton.
6.2.c Sending an emergency selective call
If your transceiver has been programmed to send an emergency selecti-
ve call, you can send it by simultaneously pressing for a long time both
the MON and FUNC buttons until you will hear a beep and the status
LED will glow red, then release the buttons. The transceiver will send the
emergency selective call.
Please use the emergency selective call only if a real condition
requires its use. Please agree its use with your radio network
manager.
During a call the transceiver turns automatically on the transmission
(the status LED glows red), so it is not necessary to press the PTT but-
ton