press, the selected digit will appear in the
right hand flashing digit position, pushing
the other digits towards the left.
3
a
.
To send a Selcall to ten consecutively
numbered radios, press the # key for the last
digit. This will insert an
A
which will
substitute for any other number in the last
digit position. Therefore if the number you
had entered was
1234A
, you would actually
be sending a Selcall to ten radios numbered
12340
,
12341
etc. to
12349
.
3
b
.
To send a Selcall to one hundred
consecutively numbered radios, press the #
key for the last two digits. This will insert
A A
which will substitute for any other number in
the last two digit positions. Therefore if the
number you had entered was
123AA
, you
would actually be sending a Selcall to one
hundred radios numbered
12300
,
12301
etc.
up to
12399
.
5.
Now press and
HOLD
the
Call
key to
transmit the Selcall code. The LED on top of
the radio will light red and the
TX
indicator
will appear on the display as the Selcall
code is sent.
Note: You must send the Selcall code within
20 seconds of the last key press otherwise the
Call To
mode will be cancelled and the code
will be lost.
You will not hear an acknowledge signal from
the other radios when sending group calls
otherwise you would be swamped with up to
100 radios all trying to transmit back at once.
SENDING DTMF (DUAL TONE MULTI
FREQUENCY) SIGNALS
DTMF signaling can be used for dialling
telephone numbers or activating devices by
remote control. If DTMF is available on your
radio, the method you will use to send DTMF
signals will depend on the options programmed
into your radio.
Using the DTMF "Speed Dial" memories:
DTMF "Speed dial" memories are used when
your radio has been preprogrammed with the
necessary DTMF tone sequences for your
application, with no provision to manually alter
them.
DTMF "Speed Dial" memories are programmed
into one or more of the function keys (
F1
-
F4
).
To send a DTMF signal using a "Speed Dial"
memory, press and
HOLD
the appropriate key
(
F1
,
F2
,
F3
or
F4
) until a high beep is heard. The
LED on top of the radio will light red and the
TX
indicator will appear on the display as the
DTMF tone sequence is sent.
Using the DTMF "Speed Dial" memories with
"Channel Recall":
Your DTMF "Speed Dial" memories may also
have been programmed to automatically go to a
specific channel before sending your DTMF
signal.
To send a DTMF signal using a "Speed Dial"
memory programmed with "Channel Recall",
press and
HOLD
the appropriate key (
F1
,
F2
,
F3
or
F4
) until a high beep is heard. The radio will
change to the preprogrammed channel, the
LED on top of the radio will light red and the
TX
indicator will appear on the display as the
DTMF signal is sent. The radio will then stay on
the preprogrammed channel.
Using the optional numeric keypad:
You may be able to manually send DTMF
signals by entering the required sequence
directly on the keypad.
To manually send a DTMF tone sequence:
Press and
HOLD
the PTT switch (on the side of
the radio) while pressing the required numbered
keys on the keypad. Briefly press each key
firmly, waiting for the tone to finish after the key
is released before pressing the next key. The
DTMF tones you are sending will be heard in
the speaker as each key is pressed. When you
have finished, release the PTT switch.
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