Dtmf Operation; Transmitting A Dtmf Code Manually - Yaesu FTM-7250DE Advance Manual

Advanced Operation

DTMF Operation

DTMF tones (Dual Tone Multi Frequencies) are the tones you hear when dialing from a
telephone keypad. The FTM-7250DR/DE transceiver can transmit the DTMF codes by
using the keys on the microphone or recalling registered number strings from memories.
The maximum of 16-digit DTMF codes can be registered in up to 10 memory channels.
It is convenient to register telephone patch numbers, and network linking sequences to
the DTMF memory channels.
Note: The two combined frequencies of the DTMF tone transmitted for each key are
indicated in the following table:

Transmitting a DTMF code manually

You can generate DTMF tones during transmission manually.
1. Press and hold the [ MHz ( SETUP )] key to enter the
Set mode.
2. Rotate the DIAL knob to select "DT AUTO 16".
3. Press the [ MHz ( SETUP )] key momentarily, and
then rotate the DIAL knob to select "MANUAL".
4. Press and hold the [ MHz ( SETUP )] key to save the new setting and exit to normal op-
eration.
5. While pressing and holding PTT, press the desired DTMF characters ( [ 0 ] to [ 9 ] , [
or [ A ] to [ D ] ), sequentially on the microphone keypad.
6 Release PTT.
While transmitting the DTMF code, transmission status is sustained even when PTT is
released.
1209 Hz
697 Hz 1
770 Hz 4
852 Hz 7
941 Hz
]
1336 Hz 1477 Hz
2 3
5 6
8 9
0 #
13
1633 Hz
A
B
C
D
] , [ # ] ,
]