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.
Optional Microphone MC503B
CTCSS TONE FREQUENCy ChART
Tone No.
Frequency hz.
Tone No.
Frequency hz.
Tone No.
Frequency hz.
Tone No.
Frequency hz.
00
0
13
100.0
26
156.7
39
196.6
01
67.0
14
103.5
27
159.8
40
199.5
02
69.4
15
107.2
28
162.2
41
203.5
03
71.9
16
110.9
29
165.5
42
206.5
04
74.4
17
114.8
30
167.9
43
210.7
05
77.0
18
118.8
31
171.3
44
218.1
06
79.7
19
123.0
32
173.8
45
225.7
07
82.5
20
127.3
33
177.3
46
229.1
08
85.4
21
131.8
34
179.9
47
233.6
09
88.5
22
136.5
35
183.5
48
241.8
10
91.5
23
141.3
36
186.2
49
250.3
11
94.8
24
146.2
37
189.9
50
254.1
12
97.4
25
151.4
38
192.8
TX3220
InSTRuCTIon ManuaL
PagE 7
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