CTCSS
Freq. Hz
CTCSS
Freq. Hz
1
67.0
20
131.8
2
71.9
21
136.5
3
74.4
22
141.3
4
77.0
23
146.2
5
79.7
24
151.4
6
82.5
25
156.7
7
85.4
26
162.2
8
88.5
27
167.9
9
91.5
28
173.8
10
94.8
29
179.9
11
97.4
30
186.2
12
100.0
31
192.8
13
103.5
32
203.5
14
107.2
33
210.7
15
110.9
34
218.1
16
114.8
35
225.7
17
118.8
36
233.6
18
123.0
37
241.8
19
127.3
38
250.3
Continuous Tone Coded Squelch System
Tone Frequencies
12