DUAL TONE MULTI-FREQUENCY (DTMF)
The keys on the microphone keypad function as DTMF keys; the 12 keys found on a
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 |
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697 | [1] | [2] | [3] | [A] |
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770 | [4] | [5] | [6] | [B] |
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852 | [7] | [8] | [9] | [C] |
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941 | [ ] | [0] | [#] | [D] |
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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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