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1
2
3
H
+5V
Y1
+5V
1
14
CV
+VDD
8
OUTPUT
7
J31
GND
5V_TCXO
1
2
3
4
5
G
6
7
8
9
10
HEADER 10
C101
100pF
+5V
F
U17
U18
OPEN
OPEN
J20
OPEN
D28
OPEN
RP1
OPEN
10
E
9
10
8
9
7
8
6
7
5
6
4
5
3
4
2
3
1
2
1
RP2
OPEN
SW3
SW4
SW5
SW6
SW7
D
OPEN
OPEN
OPEN
OPEN
OPEN
COMPOSITE1
C69
100PF
U15B
U15A
74HC14
74HC14
4
3
2
1
C
LOC/REMOTE
LOC/REMOTE
FSK IN
FSK IN
B
RF_LVL
A
1
2
3
C_L_SHT2_A.DOT REV. A
Board Layouts and Schematics
DWG. NO.
201497F-SCH
4
5
6
+8V
R81
C80
150
100PF
2
1
A2
MAR-6
FM_/LOCK
+5V
R103
R102
1M
200K
LOCK DET.
13
C109
U15F
1
74HC14
D19
R105
1N4148
100K
C104
1%
1
POLY
U13
VDD
R106 10
C103
.001
OSC in
1
16
1
16
2
15
C108
C92
2
15
3
14
1
3900PF
3
14
Fin
4
13
9
4
13
5
12
8
R98
5
12
U14C
6
11
10
100K
6
11
R114
7
10
1%
MC33284P
7
10
100K
8
9
8
9
1%
MC145170
R89
100
CLOCK
1%
/ENABLE
D25
DATA
1N4148
+5V
7
U14B
VDD
R99
100K
MC33284P
R131
R119
1%
150K
10.0K
1
18
RA2
RA1
1%
2
17
RA3
RA0
R104
D26
3
16
RTC
OSC1
100K
4
15
OPEN
CLR
OSC2
C116
1%
5
14
VSS
VDD
.001 POLY
6
13
TP
RB0
RB7
LOAD
R116
7
12
RB1
RB6
DATA
8
11
100K
RB2
RB5
CLK
1%
9
10
RB3
RB4
R129
U16
10.0K
D21 1N4148
PIC16C61
1%
C113
1
8
SW9
POLY
RESET
9
R124 1M
VU5
R125
68K
C106
2
D27
R110
1
1
U14A
2K
1N4148
3
2W
MC33284P
R71
R127
OPEN
C102
25K
1
LF SEP.
+
R72
C114
1K BECKMAN
10/35V
TANT.
COMPOSITE1
DS3
R120
FSK
+5V
R134 10.0K
1%
1.0K
AMBER
1%
FM_/LOCK
R13310.0K
1%
FM
WR
R13210.0K
1%
3
1
+5V
SP3
R11810.0K
1%
SP2
9
8
5
6
2
R11710.0K
1%
U15D
U15C
74HC14
74HC14
SP4
1
3
FREQ. ADJ.
WR
FM
Frequency Select
C73
J20
HEADER 5X2
.001
C76
D24
.001
1N4148
CH. SEL.
BAND LIMIT
DIRECT FSK
AUTO ID
ID
4
5
6
7
Schematic Diagram: Motherboard (Sheet 3 of 3)
FM600 User's Manual
REV.
A
8
9
10
88-108 MHZ
+12V
+12V
R97
C79
2
OPEN
.001
VU5
1
VU5
U12A
3
7
FM_/LOCK
U12B
NE5532
R88
NE5532
100
C74
1%
.001
C98
.001
12
11
10
LOCK
C75
U15E
.001
74HC14
VCO1
R222
MC33284P
POS-150
1.0K
R111
13
1%
100K
14
1%
U14D
12
R113
R96
C111
10.0K
150
0.01
1%
C107
.001 POLY
R95
R115
R112
15
100K
100
1%
1%
C112
220pF
+5V
+
C110
47/20V
TANT.
R109
R122 4.99K
100K
6
D23
1%
1N4148
R123
1%
5
39
D22
+
C105
1N4148
10/35V
C87
TANT.
0.1
-12V
R75
R77
24.3K 1%
10.0K
3
1%
1
6
U11A
2
C86
TL072
5
0.1
C94 0.1
+12V
R84
26.7K 1%
VU5
R78
10K
PWR. CNTRL TILT
D20
1N5353B
R85
R92
-12V
16V
24.3K 1%
680.0
C88 0.1
R93
DC SUPPLY
2K
D16
PWR. CNTRL. OFFSET
TP1
6.2V 1N753A
VR2
LM317
8.26V
+5V
+12V
3
1
IN
OUT
R74
237
+
C72
R108
1%
DS1
680
10/35V
GREEN
TANT.
SP1
FM
+
R73
C70
1.27K
2
10/35V
1%
TANT.
WR
DS2
RED
R107
680
VR3
LM78L05
R101
C95
3
1
50K
.001
IN
OUT
+
FSK-R
C97
R100
.001
100K
1%
+12V
R
R224
NOT USED
D17
10K
1N6263
VU5
OFFSET
FREQ. ADJ.
TITLE:
SIZE
C
SCALE :
8
9
10
11
12
H
C99
1
R86
+8V
499K
6
1%
5
R87 499K
C81
1%
.001
D15
+
C91
1N4148
R80
10/35V
15
TANT.
C78
.01
R79
G
100
1%
C90
MAR-6
.001
1
2
A1
RF OUT
C77
C89
.001
33pF NPO
F
+8V
Z34
JUMPER
C85
1000pF
R82
5.11K 1%
R83
5.11K 1%
S
7
U11B
G
TL072
Q4
D14
IRFD9120
D
3.9V
E
C84
0.1
TP2
4.5 - 8.0V
D
+8V
+
C71
10/35V
TANT.
C
+5V
C83
C82
1
10/35V
TANT.
B
SCH, UNIVERSAL MOTHER BOARD
A
DWG . NO .
REV
201497F-SCH
A
NONE
PROJ NO.
SHEET
3
OF
3
11
12
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