Advertisement
Press
to enter the function. Press the
confirmation.
To return to the standby mode press
Using the stopwatch timer:
When this function is ON, press
To exit the function, stop the counting first, and then press the
6.8 DTMF
DTMF is an in-band signaling method using dual sinusoidal signals for any given code. Originally developed for telephony
systems, it has proved a very versatile tool in many other areas.
In two-way radio systems, DTMF is most commonly used for automation systems and remote control. A common example
would be in amateur radio repeaters where some repeaters are activated by sending out a DTMF sequence (usually a simple
single-digit sequence).
DTMF frequencies and corresponding codes
The radios has a full implementation of DTMF, including the A, B, C and D codes.
The numerical keys, as well as the
B, C and D codes are located in the
To send DTMF codes, press the key(s) corresponding to the message you want to send while holding down the PTT key.
If you have the keypad lock enabled on your radio, you can still send DTMF tones the regular way without having to unlock
your radio.
/
keys to enable (ON) the function, then press
key.
key to start counting; Press
1209Hz
1336Hz
697Hz
1
770Hz
4
852Hz
7
941Hz
*
, and
, keys correspond to the matching DTMF codes as you would expect. The A,
,, and
keys respectively.
key again to re-start counting.
key.
1477Hz
1633Hz
2
3
A
5
6
B
8
9
C
0
#
D
26
key
for
Hide quick links:
Advertisement
