Yaesu FT-991A, Руководство по эксплуатации

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Page 96 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.
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
”
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
- - - - - -
DCS Operation
The “DCS” may be activated to keep the receiver silent until an incoming signal modulated with a matching DCS code
is received. The receiver squelch will then open in response to the reception of the required code.
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 DCS operation is desired/needed, press the F
(M-
LIST) button, then touch [ TONE/DCS
] on the LCD
to engage the DCS mode.
4. Touch [ TONE/DCS
] on the LCD repeatedly to
choose “
DCS
” from the available choices of
“
OFF
”

“
ENC
(Tone Encoder)”


“
CTCSS
(Tone Squelch)”


“
EDCS
(DCS Encoder)”


“
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).
5. Touch [ FWD
] to switch the screen, and then touch
[
DCS
]. Rotate the
MULTI knob to select the desired
DCS code to be used. A total of 104 DCS codes are
provided (see the DCS Code Chart).
DCS CODE
023 025 026 031 032 036 043 047
051 053 054 065 071 072 073 074
114 115 116 122 125 131 132 134
143 145 152 155 156 162 165 172
174 205 212 223 225 226 243 244
245 246 251 252 255 261 263 265
266 271 274 306 311 315 325 331
332 343 346 351 356 364 365 371
411 412 413 423 431 432 445 446
452 454 455 462 464 465 466 503
506 516 523 526 532 546 565 606
612 624 627 631 632 654 662 664
703 712 723 731 732 734 743 754