CTCSS Signalling Processor
FX818
1.6.7 Rx Program Tone Table
The following table lists the commonly used CTCSS tones together with the values for programming the
“CTCSS RX PROGRAM” register (Hex address $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.
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
103.5
107.2
110.9
Byte 1 Byte 2
Freq.
(Hz)
Byte 1 Byte 2
Freq.
(Hz)
Byte 1 Byte 2
(hex)
3
4
(hex)
D8
9
(hex)
6
6
7
7
(hex)
C0
D1
10
50
C0
2
(hex)
A
B
(hex)
C9
8
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
167.9
173.8
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7
218.1
225.7
229.1
233.6
241.8
250.3
254.1
4
4
4
4
4
5
1B
4E
83
94
CB
2
B
B
B
B
C
C
C
D
D
D
E
44
83
8A
C9
6
46
C3
41
48
89
8
7
8
8
8
8
9
44
86
C9
C
5
5
5
5
5
6
14
4C
87
94
CB
7
9
9
9
A
A
A
48
82
C6
B
84
C2
E
E
88
C7
6
6
45
82
ã 1997 Consumer Microcircuits Limited
20
D/818/4
CMLMICRO [ CML MICROCIRCUITS ]
