Service Manual SD170EX Series
Page 26 of 38
CTCSS
CTCSS signal information
Each channel supports the 38 TIA/EIA standard tone frequencies and 11 non-standard tones.
All tones will be set up during dealer programming.
No.
Freq.
(Hz)
No.
Freq.
(Hz)
No.
Freq.
(Hz)
No.
Freq.
(Hz)
No.
Freq.
(Hz)
01 67.0 11 97.4 21 136.5 31 192.8 41
171.3
02 71.9 12 100.0 22 141.3 32 203.5 42
177.3
03 74.4 13 103.5 23 146.2 33 210.7 43
183.5
04 77.0 14 107.2 24 151.4 34 218.1 44
189.9
05 79.7 15 110.9 25 156.7 35 225.7 45
196.6
06 82.5 16 114.8 26 162.2 36 233.6 46
199.5
07 85.4 17 118.8 27 167.9 37 241.8 47
206.5
08 88.5 18 123.0 28 173.8 38 250.3 48
229.1
09 91.5 19 127.3 29 179.9 39 69.3 49
254.1
10 94.8 20 131.8 30 186.2 40 159.8
CTCSS Frequency Chart
DCS signal information
The radio supports the encoding and decoding of 104 DCS data (include TIA/EIA code).
Octal
Code
Octal
Code
Octal
Code
Octal
Code
Octal
Code
Octal
Code
Octal
Code
Octal
Code
Octal
Code
Octal
Code
Octal
Code
023 054 125 165 245 274 356 445 506 627 732
025 065 131 172 246 306 364 446 516 631 734
026 071 132 174 251 311 365 452 523 632 743
031 072 134 205 252 315 371 454 526 654 754
032 073 143 212 255 325 411 455 532 662
036 074 145 223 261 331 412 462 546 664
043 114 152 225 263 332 413 464 565 703
047 115 155 226 265 343 423 465 606 712
051 116 156 243 266 346 431 466 612 723
053 122 162 244 271 351 432 503 624 731
DCS Code Chart
Two-Tone Squelch (SQ) System
The radios will support Motorola-Format, Two-Tone (Type 99) decoding. This is receive only,
decode only feature. It will allow a dispatcher to call individuals and groups. Each System/Group
will be programmable to respond to any combination of the code, with a distinctive alert for each
System/Group. The alert format consists of two tone sequences, first the ID of the radio being
called, then the ID of the calling radio.
This feature is programmed by the dealer (per customer’s request) and is not activated /
deactivated by the user. The user interface consists of the radio emitting the tones being
broadcast. At this point, the radio will enter Unmuted Rx mode and remain in this mode until the
PTT signal is inputted.
C
C
C
T
T
T
C
C
C
S
S
S
S
S
S
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