8-178
Schematics, Boards Overlays, and Parts Lists
: Main Board Block: UHF2 (84012616001)
Figure 8-102. Receiver VCO Circuit
IF
IF
IF
IF3101M22
IF3102M22
IF3100M22
DC_SUPER_FILTER_5V
GPO2
GPO1
1
1
1
IN
IN
IN
4.7K
47K
47K
10K
UMC5NT2
Q3128M22
DC_SUPER_FILTER_5V
3
1
4
5
2
GPO1
0
DNP
10PF
100PF
C3102M22
C3104M22
L3100M22
V1
V2
V3
RFC
NC
RF1
RF2
RF3
CGND
SKY13251
U3001M22
7
6
3
1
8
5
4
2
G1
NC
22K
100PF
390NH
390NH
0.1UF
68
0.1UF
27K
100PF
C3158M22
R3159M22
L3125M22
C3122M22
R3118M22
C3109M22
C3111M22
R3114M22
L3119M22
VCO_TX
8.2PF
6.8PF
3.85NH
82PF
390NH
4.3PF
100PF
120
C3105M22
L3112M22
C3120M22
R3127M22
L3126M22
C3116M22
C3115M22
C3113M22
300
NE856
300
3.3PF
18
R3105M22
R3106M22
R3103M22
C3159M22
Q3123M22
13
2
DNP
4.7PF
2.7PF
4.3PF
4.7PF
C3101M22
C3110M22
C3107M22
C3108M22
18NH
1SV279
1SV279
390NH
1SV279
100PF
1SV279
L3106M22
D3105M22
D3103M22
D3104M22
D3102M22
L3101M22
C3100M22
21
21
2
1
2
1
IF
IF3103M22
VCTRL
1
IN
IF
100PF
IF3104M22
C3161M22
VCO_OUT
1
OUT
GPO2
GPO1
Summary of Contents for Astro APX 3000
Page 1: ...APXTM TWO WAY RADIOS APX 3000 DETAILED SERVICE MANUAL ...
Page 2: ......
Page 4: ...Notes ...
Page 6: ...vi Document History Notes ...
Page 10: ...x Table of Contents Notes ...
Page 12: ...xii List of Tables Notes ...
Page 18: ...xviii List of Figures Notes ...
Page 22: ...xxii CommercialWarranty Notes ...
Page 46: ...3 20 Theory of Operation Main Board Notes ...
Page 84: ...3 58 Theory of Operation Bluetooth Notes ...
Page 208: ...6 64 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Page 222: ...7 14 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 282: ...8 60 Schematics Boards Overlays and Parts Lists Main Board Block UHF1 84012513001_A Notes ...
Page 390: ...8 168 Schematics Boards Overlays and Parts Lists Main Board Block VHF 84012512001_A Notes ...
Page 456: ...9 8 Debugging Fixture Powering up Covert Board Notes ...
Page 468: ...Glossary 10 Glossary Notes ...
Page 472: ...Index 4 Index Notes ...
Page 473: ......