Table of Contents
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IC1
RH5VL42CA
IC6
RH5VL28CA
IC10
RH5VL35CA
2
1
IC5
µ
PD75116
64 63 62 61 60 59 58 57 56 55 54 53 52
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 21 22 23 24 25 26 27 28 29 30 31 32
IC11
LC7366NM
V
1
20
TONE OUT
DD
2
XMIT
19
CD
3
18
C1
R1
4
17
16
5
R2
C2
C3
6
15
R3
Vss
14
R4
7
8
13
12
MUTE
OSCI
9
11
10
C4
OSCO
IC2
IR3N74AN
Vcc
1
MUTE
2
EO
3
EREC
4
EPI
5
VREF
6
3
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
IC201
MC3361CDR2
Crystal
Decoupling
IC3
M5223L
GND
12
MUTE
11
CO
10
9
CREC
8
ACP
CPI
7
1
IC7
24LC16BT/SN
A0
1
2
A1
A2
3
Vss
4
IC9
TK11232AM
CONT
1
GND
2
NOISE BYPASS
3
Mixer
1
16
Input
Osc.
2
15
GND
Audio
Mixer
3
14
Output
Mute
Scan
4
13
Vcc
Control
Squelch
Limiter
5
12
Input
Input
Filter
6
11
Output
Filter
7
10
Input
Quad
Demodulator
8
9
Audio
Input
IC4
PC817
1
2
8
IC8
MT88E43
1
2
8
Vcc
3
7
WP
4
6
SCL
5
5
SDA
6
7
8
9
10
11
12
Vin
6
5
4
Vout
IC202
M64084AGP
NC
1
Tx OUT
2
3
Tx Vcc
4
TxB
5
TxE
Tx GND
6
PD1
7
Vcc
8
Xin
9
Xout
10
XBo
11
GND
12
4
3
24
23
22
21
20
19
18
17
16
15
14
13
24
MIX REF
23
MIX IN
22
Rx Vcc
21
RxB
20
RxE
19
Rx GND
PD2
18
17
RST
16
SI
15
CPS
14
Lock
MIX OUT
13
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