Page 94
FT-991 OperaTing Manual
fM MoDe operation
tone Squelch operAtion
The “Tone Squelch” may be activated to keep the receiver silent until an incoming signal modulated with a matching
CTCSS tone is received. The receiver squelch will then open in response to the reception of the required tone.
1. Press the
MODE
button, and then touch the corre-
sponding key on the LCD to select the FM operating
mode. The “
FM
” icon appears in the display.
2. Set the transceiver to the desired frequency.
3. If CTCSS Tone operation is desired/needed, press
the
F(M-LIST)
button, then touch
[
TONE/DCS
]
on
the LCD to engage the CTCSS mode.
MULTI Knob
MODE Button
F(M-LIST) Button
4. Touch
[
TONE/DCS
]
on the LCD repeatedly to
choose “
CTCSS
” from the available choices of
“
OFF
”
“
ENC
(Tone Encoder)”
“
CTCSS
(Tone Squelch)”
“
DCS
(Digital Code Squelch)”
“
OFF
”
5. Touch
[
FWD
]
to switch the screen, and then touch
[
TONE
]
. Rotate the
MULTI
knob to select the de-
sired CTCSS Tone to be used. A total of 50 standard
CTCSS tones are provided (see the CTCSS Tone
Chart).
ctcSS tone Frequency
(
Hz
)
67.0 69.3 71.9 74.4 77.0 79.7 82.5 85.4
88.5 91.5 94.8 97.4 100.0 103.5 107.2 110.9
114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2
151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8
177.3 179.9 183.5 186.2 189.9 192.8 196.6 199.5
203.5 206.5 210.7 218.1 225.7 229.1 233.6 241.8
250.3 254.1
- - - - - -
To Next Page
Loading...
Need help?
General
