Dcs Operation; Ctcss Operation - Yaesu FT-270R Operating Manual

CTCSS/DCS/EPCS O
operator if you don't know the tone frequency).
7. When you have made your selection, press the [ F/L ] key momentarily to save the new
settings and exit to normal operation. This is different than the usual method of restor-
ing normal operation, and it applies only to the configuration of the CTCSS/DCS
frequencies.
Your repeater may or may not re-transmit a CTCSS tone - some systems just
use CTCSS to control access to the repeater, but don't pass it along when
transmitting. If the S-Meter deflects, but the FT-270R is not passing audio,
repeat steps "1" through "4" above, but rotate the DIAL so that "TSQ" disappears - this
will allow you to hear all traffic on the channel being utilized.
Another form of tone access control is Digital Code Squelch, or DCS. It is a newer, more
advanced tone system which generally provides more immunity from false paging than
does CTCSS. The DCS Encoder/Decoder is built into your FT-270R, and operation is very
similar to that just described for CTCSS. Your repeater system may be configured for
DCS; if not, DCS is frequently quite useful in Simplex operation if your friend(s) use
transceivers equipped with this advanced feature.
Just as in CTCSS operation, DCS requires that you set the Tone Mode to DCS and that
you select a tone code.
1. Press the [ F/L ] key, then press the [ 1 ( SQ TYP )] key to enable selection of the CTCSS/
DCS/ECS mode.
2. Rotate the DIAL knob until the "
display; this activates the DCS Encoder/Decoder.
3. Press the PTT switch to save the new setting.
Press the [ F/L ] key, then press the [ 2 ( CODE )] key to enable adjustment of the DCS code.
4.
5. Rotate the DIAL knob to select the desired DCS Code (a three-digit number). Ask the
repeater owner/operator if you don't
know DCS Code; if
you are working
simplex, just set up
the DCS Code to
be the same as that used by your friend(s).
6. When you have made your selection,
press the [ F/L ] key momentarily to save
the new settings and exit to normal opera-
tion.
24
PERATION
CTCSS O
DCS O
DCS
" indication appears on the
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 –
DCS CODE
–
FT-270R O
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M