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34
DUAL TONE MULTI-FREQUENCY (DTMF) FUNCTIONS
You can send DTMF tones by using the DTMF keys on
the keypad. The keypad includes the 12 keys found on
a push-button telephone plus 4 additional keys
(A, B, C, D). These additional keys are required for
various control operations by some repeater systems.
MAKING DTMF CALLS
1 Press and hold the PTT switch.
2 Press the keys in sequence on the keypad to send
DTMF tones.
• The corresponding DTMF tones are transmitted.
■ DTMF Tone TX Hold
This function makes the transceiver remain in the
transmit mode for 2 seconds after you release each
key. So you can release the PTT switch after
beginning to press keys.
1 Press [F], [BAND] to enter Menu mode.
2 Select Menu No. 13 (2S).
3 Press [BAND] to switch the function ON or OFF
(default).
4 Press any key other than [BAND], [LAMP], and
[MONI] to exit Menu mode.
■ Autopatch (U.S.A. and Canada)
Some repeaters in the U.S.A. and Canada offer a
service called Autopatch. Autopatch allows you to
access the public telephone network by sending
DTMF tones. Some repeaters require a special key
sequence to activate Autopatch. Check with the
repeater control operator.
1336
Freq. (Hz) 1477
1209
1
4
7
1633
697
770
852
941
A (CALL)
B (VFO)
C (MR)
D (F)
2
5
8
0
3
6
9
(MHz)
(REV)