Alinco DJ-175 User Manual download pdf (Page 37)

6.Selective Calling

6.2.2 Changing the DCS Code

1. Rotate the dial in DCS Code Setting mode (while " " is displayed).

2. Press any key other than the MONI key to complete the setting.

• The same DCS code is set for ENC/DEC, differential setting isn't available.

One of the following 104 DCS codes can be selected.

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

6.2.3 Switching Off DCS

Select DCS-OF in the DCS Code Setting mode to turn it off.

6.2.4 DCS Operation

The squelch unmutes only when the unit receives the matching code.

6.2.5 DET Mode in DCS Operation

DET Setting

If the DET mode in DCS operation is preferred, while in the DCS Code Setting mode

and DCS-OF is displayed, rotate the dial to eliminate the hyphen (DCS OF) then

proceed with the rest of setting sequence.

DET on DCS function stands for Detect-Only mode. In DCS operation, the TX signal

carries a digital code. The RX side, just like TSQ, detects this tone stream and

determines the squelch operation. This DCS code stream is transmitted all the way

through the communication like a CTCSS tone and it is necessary for receiver to

correctly and CONTINUOUSLY receive this DCS stream to hold the squelch open,

otherwise the CPU thinks that the signal is unwanted and it closes the squelch. But

due to noise or weak signal strength etc, sometimes it is difficult to continuously

receive a DCS stream. By activating DET, the receiver opens the squelch when the

first corresponding DCS stream is received, then thereafter, regardless of the status of

the DCS codes, the DCS squelch remains opened.

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Alinco DJ-175 User Manual Page 37