Family Radio CTCSS 'Type 2' Encoder and Decoder
CMX808A
1.6.5 Rx Tone Table
The following table lists the commonly used CTCSS tones together with the values for programming the
CTCSS RX PROGRAM register $84.
N.B.
The values for byte 1 and 2 below apply to tone address 0 only. These values will vary depending
on the location they are programmed into.
STANDARD TONES
Freq.
(Hz)
67.0
69.3
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
Byte 1
(Hex)
03
04
04
04
04
04
04
05
05
05
05
05
05
Byte 2
(Hex)
DC
0D
42
52
87
98
CF
06
18
50
8B
C2
CF
Freq.
(Hz)
Byte 1
(Hex)
06
06
06
06
07
07
07
07
08
08
08
08
09
Byte 2
(Hex)
0B
48
86
C4
03
43
83
C4
06
Freq.
(Hz)
Byte 1
(Hex)
09
09
0A
0A
0B
0B
0C
0C
0C
0D
0D
0E
0E
Byte 2
(Hex)
86
CA
43
88
02
48
03
4A
C7
45
C4
43
C3
103.5
107.2
110.9
114.8
118.8
123.0
127.3
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
48
8A
CD
42
NON-STANDARD TONES
Freq.
(Hz)
62.5
64.7
159.8
Byte 1
(Hex)
03
03
09
Byte 2
(Hex)
9C
CB
4C
Freq.
(Hz)
183.5
189.9
196.6
Byte 1
(Hex)
0A
0B
0B
Byte 2
(Hex)
C6
41
87
Freq.
(Hz)
199.5
206.5
229.1
Byte 1
(Hex)
0B
0C
0D
Byte 2
(Hex)
C3
0A
83
2003 CML Microsystems Plc
16
D/808A/6
CMLMICRO [ CML MICROCIRCUITS ]
