Kenwood TH-F6A User Manual - Page 33

Selective Call

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SELECTIVE CALL CTCSS and DCS You may sometimes want to hear calls from only specific persons or groups. In this case, use the selective call function. This transceiver is equipped with CTCSS (Continuous Tone Coded Squelch System) and DCS (Digital Coded Squelch). These selective calls allow you to ignore (not hear) unwanted calls from other persons who are using the same frequency. The transceiver unmutes only when it receives the signal having the same CTCSS tone or DCS code. Received CTCSS A CTCSS tone is a sub-audible tone and is selectable from among the 42 tone frequencies listed in the table on the following page. The list includes 37 EIA standard tones and 5 non-standard tones. You can select one of the tones to use as a CTCSS tone. USING CTCSS Press [TONE] until "CT" appears. • Each time you press [TONE], the icon cycles as follows: " " (TONE) © "CT" (CTCSS) © "DCS" (DCS) © " " (OFF) © " " (TONE). Not Received CTCSS frequency: 88.5 Hz Not Received CTCSS frequency: 100.0 Hz CTCSS frequency: 88.5 Hz CTCSS/ DCS: OFF Note: x CTCSS and DCS do not cause your conversation to be private or scrambled. It only relieves you from listening to unwanted conversations. x CTCSS and DCS function in only FM mode. When the CTCSS function is ON, you will hear calls only when the selected CTCSS tone is received. To answer the call, press and hold the PTT switch, then speak into the microphone. Note: x You cannot use the CTCSS and Tone/ DCS functions simultaneously. Switching the CTCSS function ON after having activated the Tone/ DCS functions deactivates the Tone/ DCS functions. x If you select a high CTCSS frequency, receiving audio or noise that contains the same frequency portions may cause CTCSS to function incorrectly. To prevent noise from causing this problem, select an appropriate squelch level {page 6}. x While transmitting the 1750 Hz tone by pressing [CALL] {page 13} , the transceiver does not transmit the CTCSS tone. SELECTING A CTCSS FREQUENCY 1 While in CTCSS mode {above}, press [F], [TONE]. • The current CTCSS frequency appears. 2 Turn the Tuning control or press [ ]/ [ ] to select your desired CTCSS frequency. • The selectable CTCSS frequencies are the same as those for the Tone frequency. Refer to the table on the following page for the available CTCSS frequencies. 3 Press [ ] or [MNU] to store the new setting. Otherwise, press [ ] or [PTT] to cancel. 28

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28
SELECTIVE CALL
CTCSS and DCS
You may sometimes want to hear calls from only
specific persons or groups.
In this case, use the
selective call function.
This transceiver is equipped
with CTCSS (Continuous Tone Coded Squelch
System) and DCS (Digital Coded Squelch).
These
selective calls allow you to ignore (not hear)
unwanted calls from other persons who are using the
same frequency.
The transceiver unmutes only when
it receives the signal having the same CTCSS tone or
DCS code.
Note:
◆
CTCSS and DCS do not cause your conversation to be private or
scrambled.
It only relieves you from listening to unwanted
conversations.
◆
CTCSS and DCS function in only FM mode.
CTCSS
A CTCSS tone is a sub-audible tone and is selectable
from among the 42 tone frequencies listed in the
table on the following page.
The list includes 37 EIA
standard tones and 5 non-standard tones.
You can
select one of the tones to use as a CTCSS tone.
USING CTCSS
Press
[TONE]
until “CT” appears.
•
Each time you press
[TONE]
, the icon cycles as
follows:
“
” (TONE)
“CT” (CTCSS)
“DCS”
(DCS)
“
” (OFF)
“
” (TONE).
When the CTCSS function is ON, you will hear calls
only when the selected CTCSS tone is received.
To
answer the call, press and hold the
PTT
switch, then
speak into the microphone.
Note:
◆
You cannot use the CTCSS and Tone/ DCS functions
simultaneously.
Switching the CTCSS function ON after having
activated the Tone/ DCS functions deactivates the Tone/ DCS
functions.
◆
If you select a high CTCSS frequency, receiving audio or noise
that contains the same frequency portions may cause CTCSS to
function incorrectly.
To prevent noise from causing this problem,
select an appropriate squelch level {page 6}.
◆
While transmitting the 1750 Hz tone by pressing
[CALL]
{page 13} , the transceiver does not transmit the CTCSS tone.
SELECTING A CTCSS FREQUENCY
1
While in CTCSS mode {above}, press
[F]
,
[TONE]
.
•
The current CTCSS frequency appears.
2
Turn the
Tuning
control or press
[
]
/
[
]
to select
your desired CTCSS frequency.
•
The selectable CTCSS frequencies are the
same as those for the Tone frequency.
Refer to
the table on the following page for the available
CTCSS frequencies.
3
Press
[
]
or
[MNU]
to store the new setting.
Otherwise, press
[
]
or
[PTT]
to cancel.
CTCSS frequency:
88.5 Hz
CTCSS frequency:
88.5 Hz
CTCSS frequency:
100.0 Hz
CTCSS/ DCS:
OFF
Received
Not
Received
Not
Received