Kenwood TH-D75 User Manual - Page 35

Ctcss/dcs/cross Tone, Ctcss

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10 CTCSS/DCS/CROSS TONE CTCSS You may sometimes want to hear calls only from specific persons. The Continuous Tone Coded Squelch System (CTCSS) allows you to ignore (not hear) unwanted calls from other persons who are using the same frequency. To do so, select the same CTCSS tone as selected by the other persons in your group. A CTCSS tone is subaudible and is selectable from among 50 tone frequencies. DCS Digital Coded Squelch (DCS) is another application which allows you to ignore (not hear) unwanted calls. It functions the same way as CTCSS. The only differences are the encode/ decode method and the number of selectable codes. For DCS, you can select from 104 different codes. Note: ¡ CTCSS/ DCS does not cause your conversation to be private. It only relieves you from listening to unwanted conversations. CTCSS Using CTCSS 1 Select your desired band. 2 Press [TONE] 2 times to activate the CTCSS function. • The < > icon appears on the display when the CTCSS function is On. • Each time you press [TONE], the selection changes as follows: Tone ( )  CTCSS ( )  DCS ( )  Cross Tone ( : default)  Off (no display). Additionally, when APRS is ON and Voice Alert is configured, Voice Alert ON is added to the above cycle. No. Frequency (Hz) No. Frequency (Hz) No. Frequency (Hz) 01 67.0 18 118.8 35 183.5 02 69.3 19 123.0 36 186.2 03 71.9 20 127.3 37 189.9 04 74.4 21 131.8 38 192.8 05 77.0 22 136.5 39 196.6 06 79.7 23 141.3 40 199.5 07 82.5 24 146.2 41 203.5 08 85.4 25 151.4 42 206.5 09 88.5 26 156.7 43 210.7 10 91.5 27 159.8 44 218.1 11 94.8 28 162.2 45 225.7 12 97.4 29 165.5 46 229.1 13 100.0 30 167.9 47 233.6 14 103.5 31 171.3 48 241.8 15 107.2 32 173.8 49 250.3 16 110.9 33 177.3 50 254.1 17 114.8 34 179.9 Note: ¡ CTCSS function, Tone function, and DCS function can not be set to On at the same time. ¡ CTCSS can be set separately in VFO mode, Memory Channel mode, and Call mode. ¡ When CTCSS function is changed to On or Off in Memory Channel mode or Call mode, it is a temporary change. 3 Press [F], [TONE]. • The current CTCSS frequency appears on the display and blinks. The default frequency is 88.5 Hz. 4 Select your desired CTCSS frequency. • Refer to the table below for the available frequencies. 5 Press [A/B] to complete the setting. 6 When you are called: The transceiver squelch opens only when the selected CTCSS tone is received. When you make a call: Press and hold [PTT], then speak into the microphone. • To cancel CTCSS, press [TONE] until < > no longer appears on the display. 10-1

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10-1
10 CTCSS/DCS/CROSS TONE
CTCSS
You may sometimes want to hear calls only from specific
persons. The Continuous Tone Coded Squelch System
(CTCSS) allows you to ignore (not hear) unwanted calls from
other persons who are using the same frequency. To do so,
select the same CTCSS tone as selected by the other persons
in your group. A CTCSS tone is subaudible and is selectable
from among 50 tone frequencies.
DCS
Digital Coded Squelch (DCS) is another application which
allows you to ignore (not hear) unwanted calls. It functions the
same way as CTCSS. The only differences are the encode/
decode method and the number of selectable codes. For
DCS, you can select from 104 different codes.
Note:
¡
CTCSS/ DCS does not cause your conversation to be private. It
only relieves you from listening to unwanted conversations.
CTCSS
Using CTCSS
1
Select your desired band.
2
Press
[TONE]
2 times to activate the CTCSS function.
•
The <
> icon appears on the display when the
CTCSS function is On.
•
Each time you press
[TONE]
, the selection changes as
follows:
Tone (
)
CTCSS (
)
DCS (
)
Cross
Tone (
: default)
Off (no display).
Additionally, when APRS is ON and Voice Alert is
configured, Voice Alert ON is added to the above cycle.
3
Press
[F]
,
[TONE]
.
•
The current CTCSS frequency appears on the display
and blinks. The default frequency is 88.5 Hz.
4
Select your desired CTCSS frequency.
•
Refer to the table below for the available frequencies.
5
Press
[A/B]
to complete the setting.
6
When you are called
:
The transceiver squelch opens
only when the selected CTCSS tone is received.
When you make a call
:
Press and hold
[PTT]
, then
speak into the microphone.
•
To cancel CTCSS, press
[TONE]
until <
>
no
longer appears on the display.
No.
Frequency
(Hz)
No.
Frequency
(Hz)
No.
Frequency
(Hz)
01
67.0
18
118.8
35
183.5
02
69.3
19
123.0
36
186.2
03
71.9
20
127.3
37
189.9
04
74.4
21
131.8
38
192.8
05
77.0
22
136.5
39
196.6
06
79.7
23
141.3
40
199.5
07
82.5
24
146.2
41
203.5
08
85.4
25
151.4
42
206.5
09
88.5
26
156.7
43
210.7
10
91.5
27
159.8
44
218.1
11
94.8
28
162.2
45
225.7
12
97.4
29
165.5
46
229.1
13
100.0
30
167.9
47
233.6
14
103.5
31
171.3
48
241.8
15
107.2
32
173.8
49
250.3
16
110.9
33
177.3
50
254.1
17
114.8
34
179.9
Note:
¡
CTCSS function, Tone function, and DCS function can not be set
to On at the same time.
¡
CTCSS can be set separately in VFO mode, Memory Channel
mode, and Call mode.
¡
When CTCSS function is changed to On or Off in Memory
Channel mode or Call mode, it is a temporary change.