8 ENHANCED COMMUNICATIONS

FM CTCSS OPERATION

You may sometimes want to hear calls only from specific persons. When using FM mode, the Continuous Tone Coded Squelch System (CTCSS) allows you to ignore (not hear) unwanted calls from other persons who are using the same frequency. A CTCSS tone is sub-audible and is selectable from among the 38 standard tone frequencies. Select the same CTCSS tone as the other stations in your group. You will not hear calls from stations other than those using the same CTCSS tone.

Note: CTCSS does not cause your conversation to be private. It only relieves you from listening to unwanted conversations.

1Press [A/B] to select VFO A or VFO B.

•“tA” or “tB” appears to show which VFO is selected.

2Select a band.

3Select an operating frequency.

4Press [FM/ AM/ NAR] to select FM mode.

•“FM” appears.

5Turn the SQL control to adjust the squelch.

6Press [6/ CTCSS/SEL] to switch the CTCSS function ON (or OFF).

•“C T” appears when the function is ON.

7Press [FUNC], [6/ CTCSS/SEL].

•The current CTCSS frequency appears. The default CTCSS frequency is 88.5 Hz.

8Turn the MULTI/ CH control to select the appropriate CTCSS frequency.

•The selectable CTCSS frequencies are listed in the following table.

9Press [FUNC], [6/ CTCSS/SEL] to complete the setting.

No.

Freq.

No.

Freq.

No.

Freq.

No.

Freq.

(Hz)

(Hz)

(Hz)

(Hz)

 

 

 

 

01

67.0

11

97.4

21

136.5

31

192.8

 

 

 

 

 

 

 

 

02

71.9

12

100.0

22

141.3

32

203.5

 

 

 

 

 

 

 

 

03

74.4

13

103.5

23

146.2

33

210.7

 

 

 

 

 

 

 

 

04

77.0

14

107.2

24

151.4

34

218.1

 

 

 

 

 

 

 

 

05

79.7

15

110.9

25

156.7

35

225.7

 

 

 

 

 

 

 

 

06

82.5

16

114.8

26

162.2

36

233.6

 

 

 

 

 

 

 

 

07

85.4

17

118.8

27

167.9

37

241.8

 

 

 

 

 

 

 

 

08

88.5

18

123.0

28

173.8

38

250.3

 

 

 

 

 

 

 

 

09

91.5

19

127.3

29

179.9

 

 

 

 

 

 

 

 

 

 

10

94.8

20

131.8

30

186.2

 

 

 

 

 

 

 

 

 

 

You will hear calls only when the selected tone is received. To answer the call, press [SEND] or press and hold Mic [PTT], then speak into the microphone.

Skip steps 7 and 8 if you have already programmed the appropriate CTCSS frequency.

Note:

◆When using split-frequency operation, select FM mode on both VFOs to use CTCSS.

◆Use Nos. 01 to 38 shown in the table above when selecting CTCSS frequencies via Wireless Remote Control {page 82}.

◆You can select a CTCSS frequency independent of a tone frequency.

◆You cannot use the CTCSS function with the Tone or DCS functions.

CTCSS FREQ. ID SCAN

This function scans through all CTCSS frequencies to identify the incoming CTCSS frequency on a received signal. You may find this useful when you cannot recall the CTCSS frequency that the other persons in your group are using.

1Press [FUNC], [6/ CTCSS/SEL].

•The current CTCSS frequency appears.

2Press [SCAN/ SG.SEL] to activate the CTCSS Freq. ID scan.

•“C T” blinks and every CTCSS tone frequency is scanned. When the CTCSS frequency is identified, the transceiver stops scanning and the identified frequency is displayed.

•Press [SCAN/ SG.SEL] again to resume scanning.

•Press [SCAN/ SG.SEL] to stop scanning while the CTCSS tone frequency ID scan is active.

Note: Received signals are audible while scanning is in progress.

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