Kenwood TM-281A User Manual - Page 55

Dual Tone Multi-frequency Dtmf Functions

Get Kenwood TM-281A PDF manuals and user guides View all Kenwood TM-281A manuals
Add to My Manuals
Save this manual to your list of manuals

Page 55 highlights

DUAL TONE MULTI-FREQUENCY (DTMF) FUNCTIONS This transceiver provides you with 10 dedicated DTMF Memory Channels. You can store a DTMF number (16 digits max.) in each of these channels to recall later for speed dialing. Many 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 The keys on the Mic keypad function as DTMF keys; the 12 keys found on a push-button telephone plus 4 additional keys (A, B, C, D). To perform Manual Dialing, follow the steps below. 1 Press and hold Mic [PTT] to transmit. 2 While transmitting, press the keys in sequence on the 10 keypad, to send the DTMF tones. • The corresponding DTMF tones are transmitted. Freq. (Hz) 1209 1336 1477 1633 697 1 2 3 A 770 4 5 6 B 852 7 8 9 C 941 0 # D • When DTMF TX Hold is activated {page 49}, you do not need to continuously press Mic [PTT] to remain in transmission mode. However, transmission mode is retained for only 2 seconds after pressing a key, so if the next key is not pressed within this time limit, the transceiver stops transmitting. DTMF MONITOR When pressing the Mic DTMF keys, you will not hear DTMF tones emitted from the speaker. However, you can monitor the DTMF tones if desired. 1 Press [F], [MENU] and turn the Tuning control to select Menu No. 33 (DT.M). 2 Press [MENU] and turn the Tuning control to select "ON" or "OFF" (default). 3 Press [MENU] to store the setting or any other key to cancel. 4 Press any key other than [MENU] to exit Menu Mode. 48

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
48
10
DUAL TONE MULTI-FREQUENCY (DTMF) FUNCTIONS
This transceiver provides you with 10 dedicated DTMF
Memory Channels.
You can store a DTMF number (16
digits max.) in each of these channels to recall later for
speed dialing.
Many 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
The keys on the Mic keypad function as DTMF keys;
the 12 keys found on a push-button telephone plus 4
additional keys (A, B, C, D).
To perform Manual Dialing, follow the steps below.
1
Press and hold Mic
[PTT]
to transmit.
2
While transmitting, press the keys in sequence on the
keypad, to send the DTMF tones.
•
The corresponding DTMF tones are transmitted.
1
2
3
A
4
5
6
B
7
8
9
C
0
#
D
Freq. (Hz)
697
1209
1336
1477
1633
770
852
941
•
When DTMF TX Hold is activated {page 49}, you do
not need to continuously press Mic
[PTT]
to remain in
transmission mode.
However, transmission mode is
retained for only 2 seconds after pressing a key, so if
the next key is not pressed within this time limit, the
transceiver stops transmitting.
DTMF M
ONITOR
When pressing the Mic DTMF keys, you will not hear
DTMF tones emitted from the speaker.
However, you
can monitor the DTMF tones if desired.
1
Press
[F]
,
[MENU]
and turn the
Tuning
control to
select Menu No. 33 (DT.M).
2
Press
[MENU]
and turn the
Tuning
control to select
“ON” or “OFF” (default).
3
Press
[MENU]
to store the setting or any other key to
cancel.
4
Press any key other than
[MENU]
to exit Menu Mode.