VXA-700 SPIRIT OPERATING MANUAL
39
ADVANCED OPERATION
(
AMATEUR RADIO BAND
)
DCS Operation
Another form of tone access control is Digital Code
Squelch, or DCS. It is a newer, more advanced tone sys-
tem which generally provides more immunity from false
paging than does CTCSS. The DCS Encoder/Decoder is
built into your VXA-700, 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.
Note: Just as in CTCSS operation, DCS requires that you
set the Tone Mode to DCS and that you select a “tone”
Code.
r Press and hold the key for 2 seconds. This instantly
recalls Menu Item (SQL Type).
r Press the key again to enable adjustment of this
Menu Item.
r Rotate the DIAL selector knob until “DCS” appears
on the display; this activates the DCS Encoder/De-
coder.
r Press the key momentarily, then rotate the DIAL
selector knob two clicks clockwise to select Menu Item
(DCS Set).
r Press the key again to enable adjustment of this
Menu Item.
r Rotate the DIAL selector knob until 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).
r When you have made your selection, press the
key to save the new setting, then press the PTT key
repetitively until the radio exits to normal operation.
Note: Remember that the DCS is an Encode/Decode sys-
tem, 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!
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
245 246 250 251 252 255 261 263 265 266
271 274 306 311 315 325 331 332 343 346
351 356 364 365 371 411 412 413 423 431
432 435 445 446 452 454 455 462 464 465
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 – – – –
