Kenwood TH-D72A Manuale utente

DUAL TONE MULTI-FREQUENCY (DTMF)

The keys on the keypad function as DTMF keys; the 12 keys found on a push-button telephone plus 4 additional keys (A,

B, C, D). This transceiver provides 10 dedicated memory channels. You can store a DTMF code with up to 16 digits.

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 [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 not need 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

697 [1] [2] [3] [A]

770 [4] [5] [6] [B]

852 [7] [8] [9] [C]

941 [] [0] [#] [D]

■DTMF Hold

Activate this function to remain in transmit mode, after

beginning to press keys when making a call.

1Enter Menu mode and access Menu 173.

2Set DTMF Hold to “On” to continue transmitting

when pressing keys.

• Set this menu to “Off” to stop the 2 second continuous

transmission.

AUTOMATIC DIALER

There are 10 dedicated DTMF Memory channels available

to store DTMF codes. You can store up to 16 digits in

each channel.

■Storing a DTMF Code in Memory

1Enter Menu mode and access Menu 170.

2Press [ (OK)]

3Press [ ]/[ ] or rotate the Tuning control to select

a channel number.

4Press [ OK] or [MENU] to set the selected

channel number.

• The name entry display appears.

5Enter a name for the channel, the press [ OK] or

[MENU] to set it.

• The code entry display appears.

6Enter a DTMF code for the channel, then press [

OK] or [MENU] to set it.

• When a space is entered, it becomes a “Pause” code.

DTMF – 1

DTMF – 2

■Transmitting Stored DTMF Codes

1Press and hold [PTT].

2While transmitting, press [MENU].

• The last called DTMF Memory channel number and

name appears on the display. If no name has been

saved for the channel, the DTMF code appears.

3While still transmitting, press [ ]/[ ]or rotate

the Tuning control to select your desired DTMF

Memory channel, then press [ OK] or [MENU] to

transmit DTMF code.

• Additionally, you can press a DTMF key

corresponding to your desired channel ([0] ~ [9]) to

select the channel and begin transmission.

• The stored DTMF code scrolls across the display and

is transmitted.

• The code will be transmitted even if you release [PTT]

before the entire code has scrolled across the display.

• If no DTMF code is stored in the selected channel, the

frequency display is restored.

■Selecting a Transmit Speed

Some repeaters may not respond correctly if a DTMF

code is transmitted at fast speed. If this happens,

change the DTMF code transmission speed; the

default is 100 msec.

1Enter Menu mode and access Menu 171.

2Select a speed (in msec) from the available list: 50/

100/ 150.

■Selecting a Pause Duration

You can change the pause duration stored in DTMF

Memory channels; the default is 500 msec.

1Enter Menu mode and access Menu 172.

2Select a pause duration (in msec) from the available

list: 100/ 250/ 500/ 750/ 1000/ 1500/ 2000.

DTMF KEY LOCK

This function will lock the DTMF transmission keys so that

they will not transmit if they are accidentally pressed while

transmitting. To lock the DTMF keys, turn this function

On.

1Enter Menu mode and access Menu 181.

2Set the key lock to “On” or “Off”.

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