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Table 7.1. DTMF frequencies and corresponding codes
1209 Hz
1336 Hz
1477 Hz
1633 Hz
697 Hz
1
2
3
A -
770 Hz
4
5
6
B -
852 Hz
7
8
9
C -
941 Hz
*
0
#
D -
The BTECH UV-2501 / UV-5001 has a full implementation of DTMF, including the A, B, C and D
codes.
The numerical keys, as well as the
, and
, keys correspond to the matching DTMF codes as you
would expect. The A, B, C and D codes are located in the
,
,
and
keys respectively
(†).
Manually TX DTMF Tones:
To manually send DTMF codes, press the key(s) while holding down the
PTT key.
Automatically TX DTMF Tones:
Save it to Memory and Transmit:
You can also program a DTMF tone to the saved calling list
(requires the PC software) to the one of the 15 Memory call banks in the radio. To transmit select
the Pre-set DTMF saved setting on Menu 24 and then press the call key to send the saved DTMF TX
tone.