Yaesu FT-2980R Operating Manual

Also see for FT-2980R: Operating manual

Contents

DCS OperationAnother form of tone access control is Digital Code Squelch, or DCS. It is a newer, moreadvanced tone system which generally provides more immunity from false paging thandoes CTCSS. The DCS Encoder/Decoder is built into your FT-2980R, and operation isvery similar to that just described for CTCSS. Your repeater system may be configured forDCS; if not, it is frequently quite useful in Simplex operation if your friend(s) usetransceivers equipped with this advanced feature.Just as in CTCSS operation, DCS requires that you set the Tone Mode toDCS and that you select a Tone Code.1. Press and hold in the [MHz(SET)] key for one second,then rotate the DIAL knob to select “49 SQL.TYP”.2. Press the [MHz(SET)] key, then rotate the DIAL knobuntil “DCS” appears on the display; this activates theDCS Encoder/Decoder.3. Now press the [MHz(SET)] key momentarily, then rotatethe DIAL knob to select Menu “14 DCS CD”.4. Press the [MHz(SET)] key momentarily to enable theadjustment of the DCS code.5. Rotate the DIAL knob to select the desired DCS Code (athree-digit number).6. When you have made your selection, press and hold inthe [MHz(SET)] key for one second to save the new set-ting and exit to normal operation.1) Remember that the DCS is an Encode/Decodesystem, so your receiver will remain muted untila matching DCS code is received on an incomingtransmission. Switch the DCS off when you’re justtuning around the band!2) Press the [REV(DW)] key as described in procedure“6”. You can now set the transmit DCS code. Rotatethe DIAL knob until the desired DCS code is dis-played. “tt” is displayed at the right of the DCS codeindication. When the [REV(DW)] key is pushed again“rt” is displayed along with the receive DCS code.3) When the encoder and decoder DCS codes are different, a solid decoder iconand a blinking encoder icon will be displayed.DCS CODE023 025 026 031 032 036 043 047 051 053 054 065 071 072073 074 114 115 116 122 125 131 132 134 143 145 152 155156 162 165 172 174 205 212 223 225 226 243 244 245 246251 252 255 261 263 265 266 271 274 306 311 315 325 331332 343 346 351 356 364 365 371 411 412 413 423 431 432445 446 452 454 455 462 464 465 466 503 506 516 523 526532 546 565 606 612 624 627 631 632 654 662 664 703 712723 731 732 734 743 754 - - - - - - - -: Transmit DCS: Receive DCS23CTCSS/DCS/EPCS OperationFT-2980R Operating Manual