Motorola APX 5000 Service Manual page 47
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Theory of Operation: Transceiver Board
UHF
UHF R1 TX
(380–445)
UHF R1 TX
(445–470)
UHF R1 RX
(380–449.65)
UHF R1 RX
(449.65–470)
UHF R2 TX
(450–520)
UHF R2 RX
(450–520)
Table 3-3. Port Expander Pin Settings (Continued)
PIN NO.
1
2
3
LOGIC
0
0
0
PIN NO.
16
17
18
LOGIC
0
H
0
PIN NO.
1
2
3
LOGIC
0
0
0
PIN NO.
16
17
18
LOGIC
0
H
0
PIN NO.
1
2
3
LOGIC
0
H
H
PIN NO.
16
17
18
LOGIC
0
0
0
PIN NO.
1
2
3
LOGIC
0
H
H
PIN NO.
16
17
18
LOGIC
0
0
0
PIN NO.
1
2
3
LOGIC
0
0
0
PIN NO.
16
17
18
LOGIC
0
H
0
PIN NO.
1
2
3
LOGIC
0
H
H
PIN NO.
16
17
18
LOGIC
0
0
0
4
5
6
7
8
0
0
0
0
0
19
21
22
23
24
0
0
H
H
H
4
5
6
7
8
0
0
0
0
0
19
21
22
23
24
0
0
H
H
H
4
5
6
7
8
0
0
0
H
H
19
21
22
23
24
0
0
H
H
0
4
5
6
7
8
0
0
0
H
0
19
21
22
23
24
0
0
H
H
0
4
5
6
7
8
0
0
0
0
0
19
21
22
23
24
0
0
H
H
H
4
5
6
7
8
0
0
0
H
0
19
21
22
23
24
0
0
H
H
0
9
10
12
13
14
0
0
H
0
0
25
26
27
28
29
0
0
H
0
H
9
10
12
13
14
0
0
0
H
0
25
26
27
28
29
0
0
H
0
H
9
10
12
13
14
0
0
0
0
0
25
26
27
28
29
0
0
0
0
0
9
10
12
13
14
0
0
0
0
0
25
26
27
28
29
0
0
0
0
0
9
10
12
13
14
0
0
0
H
0
25
26
27
28
29
0
0
H
0
H
9
10
12
13
14
0
0
0
0
0
25
26
27
28
29
0
0
0
0
0
3-21
15
0
30
0
15
0
30
0
15
0
30
0
15
H
30
0
15
0
30
0
15
H
30
0
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