3M Peltor LiteCom Plus MT7H7A4610-NA, Manual

Page: 11 / 25

9
Squelch (hiss reduction)
The “Squelch” feature will reduce the distracting radio hiss or static noise. You can choose between five squelch levels by
pressing the (+) button (A:11) or (–) button (A:12). A higher squelch level will further reduce the noise, but will also reduce
your range of reception. To switch this function off, press the (–) button for two seconds. Press the (+) button to switch this
function back on.
Sub channel (selective squelch)
The Sub channel feature can be used to set up multiple private groups within a single channel. When the sub channel
feature is active, an inaudible code will be transmitted with the speech and only the receivers with the same sub channel
setting will hear the transmission. However, if anybody is transmitting on the channel, all sub-channels will be busy during
that time. If the sub channel feature is switched off, all communication on a channel will be heard. Press the (+) button
(A:11) or (–) button (A:12) to select the sub channel. The LiteCom Plus headset supports Continuous Tone Coded Squelch
System (CTCSS) and Digital Coded System (DCS) for a total of 121 frequencies/codes (see table below for sub channel #
and the associated tone/code). To switch this function off press the (–) button when sub channel 1 is selected, or press the
(+) button when channel 121 is selected. Press the (+) button to switch this function back on.
Continuous Tone Coded Squelch System (CTCSS)
# Tone
(Hz)
1 67.0
2 71.9
3 74.4
4 77.0
5 79.7
6 82.5
7 85.4
Digital Coded System (DCS)
# DCS
39 023
40 025
41 026
42 031
43 032
44 043
45 047
46 051
47 054
48 065
49 071
50 072
51 073
52 074
# Tone
(Hz)
8 88.5
9 91.5
10 94.8
11 97.4
12 100.0
13 103.5
14 107.2
# Tone
(Hz)
15 110.9
16 114.8
17 118.8
18 123.0
19 127.3
20 131.8
21 136.5
# Tone
(Hz)
22 141.3
23 146.2
24 151.4
25 156.7
26 162.2
27 167.9
28 173.8
# Tone
(Hz)
29 179.9
30 186.2
31 192.8
32 203.5
33 210.7
34 218.1
35 225.7
# Tone
(Hz)
36 233.6
37 241.8
38 250.3
# DCS
53 114
54 115
55 116
56 125
57 131
58 132
59 134
60 143
61 152
62 155
63 156
64 162
65 165
66 172
# DCS
67 174
68 205
69 223
70 226
71 243
72 244
73 245
74 251
75 261
76 263
77 265
78 271
79 306
80 311
# DCS
81 315
82 331
83 343
84 346
85 351
86 364
87 365
88 371
89 411
90 412
91 413
92 423
93 431
94 432
# DCS
95 445
96 464
97 465
98 466
99 503
100 506
101 516
102 532
103 546
104 565
105 606
106 612
107 624
108 627
# DCS
109 631
110 632
111 654
112 662
113 664
114 703
115 712
116 723
117 731
118 732
119 734
120 743
121 754
EN