Yaesu FT-7800R, Руководство по эксплуатации

Страница: 31 / 80

29 FT-7800R O
PERATING
M
ANUAL
CTCSS/DCS O
PERATION
the [ BAND
(
SET
)] key momentarily to save the new set-
ting, then press and hold in the [
BAND ( SET )] key for
1/2 second to exit to normal operation.
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 transmit-
ting. If the S-Meter deflects, but the FT-7800R is not passing audio, press the [TONE(REV)]
key so that “ENC” appears - this will allow you to hear all traffic on the channel being
received.
DCS O
PERATION
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-7800R
, and operation is very
similar to that just described for CTCSS. Your repeater system may be configured for DCS;
if not, it 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 [ TONE
(
REV
)] key until “
DCS ” appears on
the display; this activates the DCS Encoder/Decoder.
2. Now, press and hold in the [ BAND
(
SET
)] key for 1/2
second to enter the Set mode, then rotate the DIAL knob
to select Menu #9 (
DCS.COD
).
3. Press the [ BAND
(
SET
)] key momentarily to enable the
adjustment of the DCS code.
4. Rotate the DIAL knob to select the desired DCS Code
(a three-digit number).
5. When you have made your selection, press
the [ BAND
(
SET
)] key momentarily to save
the new setting, then press and hold in the
[
BAND
(
SET
)] key for 1/2 second to exit
to normal operation.
Remember that the DCS is an Encode/Decode
system, so your receiver will remain muted
until a matching DCS code is received on an
incoming transmission. Switch the DCS off
when you’re just tuning around the band!
CTCSS O
PERATION
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 – – – – – –