Continuous Tone Coded Squelch System

 

Tone Frequencies

 

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

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.

-9-

Page 11
Image 11
Audiovox FR-240 owner manual Ctcss