AR-DV10 Tone Squelch, DCS & Descrambler

Summary: Selective squelch and the descrambler on the AR-DV10.

CTCSS and Reverse Tone

The squelch opens only if the chosen tone is present. FM mode with 6 or 15 kHz IF bandwidth only.

1. [MENU], [ENT], VFO EDIT, [ENT].
2. SQL TYPE: choose CTCSS (or RTN for reverse tone).
3. Press [ENT], then choose the tone (OFF, SRCH for auto-detect, or a value).
4. Save with VFO PARAM SET. “CTC” or “RTN” shows.

Reverse tone does the opposite: it closes the squelch when the tone is present and stays open for others (mainly Japan).

Tones (Hz): 60.0, 67.0, 69.3, 71.9, 74.4, 77.0, 79.7, 82.5, 85.4, 88.5, 91.5, 94.8, 97.4, 100.0, 103.5, 107.2, 110.9, 114.8, 118.8, 120.0, 123.0, 127.3, 131.8, 136.5, 141.3, 146.2, 151.4, 156.7, 159.8, 162.2, 165.5, 167.9, 171.3, 173.8, 177.3, 179.9, 183.5, 186.2, 189.9, 192.8, 196.6, 199.5, 203.5, 206.5, 210.7, 218.1, 225.7, 229.1, 233.6, 241.8, 250.3, 254.1.

DCS

The same, but with SQL TYPE = DCS and DCS CODE (line 4) set to a code or SRCH. FM with 6 or 15 kHz only. “DCS” shows. Codes: 017, 023, 025, 026, 031, 032, 036, 043, 047, 050, 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.

Voice Descrambler (V.SCR)

Decodes voice inversion scrambling (sometimes used in public service, motor racing and cordless phones). FM with 6 or 15 kHz only; not available on the US consumer version. [MENU], [ENT], VFO EDIT, line 7 V.SCR, turn to ON, [ENT], then choose the carrier frequency 2000-7000 Hz, and press [ENT] twice.

Not Working?

If “CTC” or “DCS” is on the display and there’s no sound, turn tone squelch off. See AR-DV10 Troubleshooting & Specifications.