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.

1Press and hold the microphone [PTT].

2Press 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 first tone (by pressing [PTT] and the first 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]

nDTMF 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 (DT.HOLD) {page 20}.

2 Set DTMF Hold to ON to continue transmitting when pressing keys.

•Set this menu to OFF to stop the 2 second continuous transmission.

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