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Continuous Tone Coded Squelch System
CTCSS
Freq. Hz
1
67.0
2
71.9
3
74.4
4
77.0
5
79.7
6
82.5
7
85.4
8
88.5
9
91.5
10
94.8
11
97.4
12
100.0
13
103.5
14
107.2
15
110.9
16
114.8
17
118.8
18
123.0
19
127.3
Call Signals
The FR-240 will transmit a two-second ringing sound to other
transceiver's tuned to the same channel and CTCSS code when
the call button is pressed. This feature can be used to signal
other parties that voice communication is desired.
Tone Frequencies
CTCSS
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
-9-
Freq. Hz
131.8
136.5
141.3
146.2
151.4
156.7
162.2
167.9
173.8
179.9
186.2
192.8
203.5
210.7
218.1
225.7
233.6
241.8
250.3
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