DUAL TONE MULTI-FREQUENCY (DTMF)
The keys on the microphone keypad function as DTMF keys; the 12 keys found on a push-button telephone plus 4 additional keys (A, B,
C, D). This transceiver provides 10 dedicated memory channels. You can store a DTMF code with up to 16 digits.
Some repeaters in the U.S.A. and Canada offer a service called Autopatch. You can access the public telephone network via such a
repeater by sending DTMF tones. For further information, consult your local repeater reference.
MANUAL DIALING
Manual Dialing requires only two steps to send DTMF tones.
1
Press and hold the microphone
[PTT]
.
2
Press the keys in sequence on the keypad to send DTMF
tones.
•
The corresponding DTMF tones are transmitted.
•
If the DTMF Hold function is activated, you need not hold down
[PTT]
while pressing keys. After transmitting the fi rst tone (by
pressing
[PTT]
and the fi rst key), pressing additional keys will
keep the transceiver in transmit mode for 2 seconds.
Frequency (Hz)
1209
1336
1447
1633
697
[1]
[2]
[3]
[A]
770
[4]
[5]
[6]
[B]
852
[7]
[8]
[9]
[C]
941
[ ]
[0]
[#]
[D]
■
DTMF Hold
Activate this function to remain in transmit mode, after
beginning to press keys when making a call.
1
Enter Menu mode and access Menu 300.
2
Set DTMF Hold to ON to continue transmitting when
pressing keys.
•
Set this menu to OFF to stop the 2 second continuous
transmission.
AUTOMATIC DIALER
There are 10 dedicated DTMF Memory channels available
to store DTMF codes. You can store up to 16 digits in each
channel.
■
Storing a DTMF Code in Memory
1
Enter Menu mode and access Menu 301.
2
Rotate
the
Tuning
control to select a channel number.
3
Press
the
Tuning
control to set the selected channel
number.
•
The name entry display appears.
4
Enter a name for the channel, the press the
Tuning
control to set it.
•
The code entry display appears.
5
Enter a DTMF code for the channel, then press the
Tuning
control to set it.
•
When a space is entered, it becomes a “Pause” code.
DTMF-1
