ADVANCED OPERATION

CTCSS/DCS 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-2800M is not passing audio, repeat steps “1” through “3” above, but rotate the DIAL knob so that “T ENC” appears - this will allow you to hear all traffic on the channel being received.

You may use the Menu to re-program one of the Microphone’s programmable keys for quick access to Menu #27 (SQL TNF), from which you can perform the above setup procedure. See page 45 for details on the setup of the programmable keys.

DCS Operation

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-2800M, 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 and hold in the [MHz(SET)] key for one second, then rotate the DIAL knob to select “28 SQ TYP.”

2.Press the [MHz(SET)] key, then rotate the DIAL knob until “DCS” appears on the dis- play; this activates the DCS Encoder/Decoder.

3.Now press the [MHz(SET)] key momentarily, then rotate the DIAL knob to select Menu “26 SQ DCS.”

4.Press the [MHz(SET)] key momentarily to enable the adjustment of the DCS code.

5.Rotate the DIAL knob to select the desired DCS Code (a three-digit number).

6.When you have made your selection, press and hold in the [MHz(SET)] key for one second to save the new setting and 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 re-

ceived 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

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

FT-2800M OPERATING MANUAL

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