Tone
Number
JP8
JP7
JP6
JP5
JP4
JP3
67.0
0
69.3
1
X
71.9
2
X
74.4
3
X
X
77.0
4
X
79.7
5
X
X
82.5
6
X
X
85.4
7
X
X
X
88.5
8
X
91.5
9
X
X
94.8
10
X
X
97.4
11
X
X
X
100.0
12
X
X
103.5
13
X
X
X
107.2
14
X
X
X
110.9
15
X
X
X
X
114.8
16
X
118.8
17
X
X
123.0
18
X
X
127.3
19
X
X
X
131.8
20
X
X
136.5
21
X
X
X
141.3
22
X
X
X
146.2
23
X
X
X
X
151.4
24
X
X
156.7
25
X
X
X
159.8
26
X
X
X
162.2
27
X
X
X
X
165.5
28
X
X
X
167.9
29
X
X
X
X
171.3
30
X
X
X
X
173.8
31
X
X
X
X
X
177.3
32
X
179.9
33
X
X
183.5
34
X
X
186.2
35
X
X
X
189.9
36
X
X
Table 1. Program Jumpers
Tone
Number
JP8
JP7
JP6
JP5
JP4
JP3
192.8
37
X
X
X
196.6
38
X
X
X
199.5
39
X
X
X
X
203.5
40
X
X
206.5
41
X
X
X
210.7
42
X
X
X
218.1
43
X
X
X
X
225.7
44
X
X
X
229.1
45
X
X
X
X
233.6
46
X
X
X
X
241.8
47
X
X
X
X
X
250.3
48
X
X
254.1
49
X
X
X
50
X
X
X
51
X
X
X
X
52
X
X
X
53
X
X
X
X
54
X
X
X
X
55
X
X
X
X
X
56
X
X
X
57
X
X
X
X
58
X
X
X
X
59
X
X
X
X
X
60
X
X
X
X
61
X
X
X
X
X
62
X
X
X
X
X
63
X
X
X
X
X
X
Figure 1. PCB Layout
Wiring Interface
This sub miniature module will easily fit in almost all popular mobile and portable
radios. Most radio manufacturers provide recommended hook up points in their radios
for CTCSS. Where possible follow the manufacturers instructions. See Table 2 for
wiring details.
Pin #
Color
Description
Pin 1
Red
12 V:
Connect to the radio’s switched transmit voltage source.
Pin 2
Black
Ground:
Connect to the radio 0 volt point (ground).
Pin 3
Orange
Tone Out:
Connect to a (transmit) audio point after the limiter/
clipper stage but before the radio’s modulator. Do not connect to the
radio’s microphone input as distortion will occur.
Pin 4
Light Green
PTT In:
Connect to microphone PTT switch.
Pin 5
Blue/White
Phase Reversal Input:
This input can be used to activate Phase
Reversal (JP1 must be shorted).
Table 2. Wiring Diagram
Mounting Details
Place the provided heatshrink tubing around the ARi-51 module and shrink the tubing
with a heat gun (preferred). Mount the encoder to a suitable location in the radio,
preferably away from high RF and sensitive receiving stages, with the provided
double-sided tape.
Note: Do not overheat the encoder while using a heat gun. You
will melt the solder and the SMD components on the circuit board will become
dislodged, causing failure of the encoder, and voiding of the warranty.
Figure 2. Circuit Diagram ARi-51
