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6. If a different transmit tone is required, select it using the
channel selector. Press and hold the SQL key to store
the tone.
7. now switch the radio OFF then ON again to return to
normal operation.
Note: To disable the sending or receiving of CTCSS tones,
set either tone to 00. If both transmit and receive tones
are set to 00, the CTCSS function is disabled and can not
be selected.
To enable the CTCSS function on a channel
1. Select the required channel.
2. Press and hold the SQL key until a high beep is heard.
'SILEnT' will be displayed.
You may activate CTCSS on as many channels as you wish
except channels 1-8 (CTCSS is automatically disabled on
repeater channels and the emergency channel 5 where
ACMA regulations require that CTCSS be disabled).
To de-activate CTCSS
Repeat the steps above. A low beep will be heard and
'SILEnT' will disappear.
Tone No.
Frequency hz.
00
0
01
67.0
02
69.4
03
71.9
04
74.4
05
77.0
06
79.7
07
82.5
08
85.4
09
88.5
10
91.5
11
94.8
12
97.4
T X3 2 20
CTCSS TONE FREQUENCy ChART
Tone No.
Frequency hz.
13
100.0
14
103.5
15
107.2
16
110.9
17
114.8
18
118.8
19
123.0
20
127.3
21
131.8
22
136.5
23
141.3
24
146.2
25
151.4
InSTRuCTIon ManuaL
Optional Microphone MC503B
Channel Down
Push-To-Talk
(PTT)
Priority
Tone No.
Frequency hz.
26
156.7
27
159.8
28
162.2
29
165.5
30
167.9
31
171.3
32
173.8
33
177.3
34
179.9
35
183.5
36
186.2
37
189.9
38
192.8
Skip
Channel Up
Tone No.
Frequency hz.
39
196.6
40
199.5
41
203.5
42
206.5
43
210.7
44
218.1
45
225.7
46
229.1
47
233.6
48
241.8
49
250.3
50
254.1
Pag E 7
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