Icom IC-R3 Schematics

2
IC-R3 CIRCUIT DIAGRAM
VCO UNIT
C158
0.001
R124 120
C156
0.001
C166
0.001
C16210R129
47
C180
0.001
C182
0.001
L62 ACB1608M-600
D62 1SV286
L63 17 nH
C165
1.5 P
L64 14 nH
LV1
L917
0.1 µH
C955 470 P
C957 470 P
R941
4.7 k
R943 47
C956 47
L918
6.8 nH
C971 470 P
L920
6.8 nH
C972 1 P
C974
1.5 P
C973 7 P
C975 18 P
C976
2.5 P
L923
5.6 nH
Q863 2SC5195
R947 150 k
R946 100
R948 150 k
R949 100
C958 5 P
SHIFT
Q21 DTC144EE
C136
0.1
R52
3.9 k
R952 15
CONLO
C983 470 P
L925
6.8 nH
L924
6.8 nH
CONV
Q864 2SC5195
R950 150 k
R951 100
C982 5 P
C984 2 P
R188 1 k
R123 47 k
R104
4.7 k
R160
2.7 k
C178
0.001
C164
0.001
C163
0.001
C161
0.001
D61 MA2S077
Q22 2SC5006
R51 220
R162
8.2 k
R163 220
C183
1.5 P
C173
0.001
C160
0.001
Q23 2SC5006
R196 22
1stLO
C256
0.001
C257
0.001
R197 220
C258
0.001
R125
8.2 k
R198 100 k
R127 15
R128 15
L65 22 nH
C157 8 P
1
2
3
5
6
IC4 UPC2746T
R126 680
1 2 3 4 5 6 7 8 9
J2
1 2 3 4 5 6 7 8 9
J1
To RF unitTo RF unit
SHIFT
R38 100
C137
0.001
R50 22 k
REF FSET VP
LV1
Q25 2SC5231
+3V PSTB
PDA R3V
CONV
PCK 2ndLO
CONLO
C131 1
R39 100 k
C139 15P
LV3
X1 CR-674
D41 HVU350
C138 10 P
C237
0.001
R195 56
R48
5.6 k
Q32 2SC4117 GR
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10
201918171615141312
11
IC3 µPD3140GS
C129
0.01
C133
0.22
C134
0.22
C130 1
Q31 2SK880 Y
R44 390
C128
0.047
R972 220
C135
0.001
R87 10 k
R47
8.2 k
R49
5.6 k
C100 33 P
EP100
MMZ 1U
EP101
MMZ 1U
R46 390
+3V
LV3
C981 2 P
Q862 2SC5195
C978 1 P
C979
3.5 P
L921
6.8 nH
L922
5.6 nH
C977
1.5 P
R945 180
C968 18 P
L919 22 nH
C959 7 P
C967 6 P
C960
1.5 P
Q861 2SC5006
C965
0.001
R940 1 k
D913 1SV305
C969
0.01
R944
4.7 k
C964 10 P
PSTB
R42 100
R41 100
C121 47 P
C122 47 P
PDA
PCK
R43 100
C123 47 P
Q871 2SC4117 GR
Q33 2SC4617 S
C991 1
C127 1
R971 10 k
R970
5.6 k
R45
5.6 k
C125
0.01
C145
0.001
R88 100 k
D42 MA2S111
C126
0.047
Q870 2SK880 Y
C124
0.001
R89 56
R40 100 k
C140
0.01
FSET
VP
R69 22 k
2ndLO
C132
0.1
R90 1 k
R922 47
C250 8 P
C252 8 P
C81
0.001
C251 4 P
Q853 2SC5231 C8
C249
0.001
L68 100 µH
L69 22 nH
C154 39 P
R923 100 k
C254 4 P
R121 330
C79
0.001
D201 MA2S111
D202 1SV286
R119
4.7 k
R921 120
R120
4.7 k
C255
0.001
6 5 4
2 3
1
Q34 UPA804T
C82 10
C259
0.001
C253 2 P
C78
0.1
R122
3.9 k
R154 120
L45 42 nH
C80 2 P
C260
0.001
4
VCC1
IN1
ENB
DATAT1LOK
FI1
GND1
IN2
VCC2
XB
XI
XO
GND2
FI2
12
34
2.8 V
2.9 V 0.6 V
0.7 V
1.8 V
2.8 V
2.9 V
0.6 V
0.7 V
1.0 V
2.0 V
0.7 V
2.6 V
2.4 V
3.1 V
2.4 V
2.0 V
0.7 V
0.8 V
1.3 V
1.3 V
1.8 V
0.6 V
3.1 V
3
RF-B UNIT
AGC
AGC
AGC
AGC
RFI
RFI
RFI
RFI
RFI
RFI
RFO
RFO
RFO
RFO
C411
0.01
L404
0.56 µH
D404 MA2S077
C408
0.01
R404 220 k
30–65 MHz
C401
0.01
R409
2.2 k
L401
0.56 µH
L402
0.56 µH
D403 MA2S077
R403 47 k
C403
0.01
R401 100 k
D401 1SV288
C402
0.01 R402
68 k
L403 1 µH
R405 100
C406
0.01
R504 220 k
C407
0.01
C405
0.01
C404
0.01
Q401 3SK293
C409
0.01
C410
0.01
D402 1SV288
R408 100 k
R407 100
C508
0.001
C511
0.001
L504
0.15 µH
R410
2.2 k
D504 MA2S077
L405
0.56 µH
TRAC
TRAC
TRAC
TRAC
C611
0.001
R510
2.2 k
L505 56 nH
L604 82 nH
D604 MA2S077
C509
0.001
C510
0.001
D502 1SV288
R508 100 k
R507 100
C608 3 P
C504
0.001
C506
0.001
L503 1 µH
R604 220 k
C507
0.001
R505 100
C505
0.001
Q501 3SK293
R611 10
C503
0.001
R503 47 k
D501 1SV288
R501 100 k
R502 68 k
C502
0.001
65–108 MHz
C501
0.001
R509
2.2 k
L502
0.15 µH
L501 56 nH
D503 MA2S077
108–174 MHz
C601
0.001
R609
2.2 k
D603 MA2S077
L601 33 nH
L602
0.1 µH
R603 47 k
R601 100 k
D601 1SV286
R602 68 k
C602
0.001
C603 10 P
C604
0.001
R704 220 k
C607
0.001
C605
0.001
Q601 3SK293
R711 22
C606
0.001
R605 100
R606 270
C609
0.001
C610
0.001
L603 1 µH
R608 100 k
R607 100
D602 1SV286
C708
0.001
C711
0.001
L704 47 nH
R610
2.2 k
D704 MA2S077
L605 33 nH
108M
174M
L705 15 nH
R710
2.2 k
C709
0.001
C710
0.001
D702 1SV286
R708 100 k
R707 100
C704
0.001
C706
0.001
L703 1 µH
C707
0.001
R705 100
C705
0.001
Q701 3SK293
C703
0.001
R703 47 k
R701 100 k
D701 1SV286
R702 68 k
C702
0.001
174–225 MHz
To RF unit
To RF unit
C701
0.001
R709
2.2 k
L702 47 nH
L701 15 nH
D703 MA2S077
1 2 3 4
J3
1 2 3 4 5 6
J4
TRAC
AGC
108M
174M
RFO
RFI
1.9 V
1.9 V
1.9 V
1.9 V
3.0 V
3.0 V
3.0 V
3.0 V
2.4 V
2.4 V
2.4 V
2.4 V
0.6 V
0.6 V
0.6 V
0.6 V
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