Schematics, Boards Overlays, and Parts Lists
: Main Board Block: VHF (84012512001_A)
8-123
Figure 8-68. Receiver Front End Circuit
IF
IF
IF302M20
IF303M20
1
1
IN
IN
DIG_CTRL_RXV
DC_LIN_1_8V_A
22K
22K
75K
33
BC858CD
330PF
4.7UF
120K
BC858CD
10K
MUN5212T
R311M20
R310M20
R313M20
R312M20
Q304M20
E302M20
C342M20
C341M20
Q303M20
Q303M20
DC_LIN_RX_VHF_LNA_A
DIG_CTRL_RXV_A
DC_LIN_RX_VHF_LNA_D
DC_LIN_RX_VHF_LNA_C
DC_LIN_RX_VHF_LNA_E
2
3
1
2
1
1
6
2
4
3
5
15PF
1.2K
330PF
72NH
68NH
10NH
10
BFR380F
1PF
10
U304M20
L316M20
L315M20
C360M20
R315M20
C344M20
R381M20
L317M20
C343M20
R314M20
RF_RX_VHF_LNA_F
RF_RX_VHF_LNA_C
RF_RX_VHF_LNA_A
RF_RX_VHF_LNA_E
RF_RX_VHF_F2_B
RF_RX_VHF_LNA_D
23
1
330PF
39NH
27PF
18PF
120NH
43PF
39NH
6.8PF
5.6PF
18PF
18PF
27PF
15PF
27PF
120NH
C357M20
L321M20
L320M20
L319M20
L318M20
C352M20
C354M20
C348M20
C346M20
C353M20
C351M20
C350M20
C349M20
C347M20
C345M20
TL_RX_VHF_L2F
RF_RX_VHF_F2_F
RF_RX_VHF_F2_C
RF_RX_VHF_F2_E
RF_RX_VHF_F2_D
RF_RX_VHF_F2_A
IF
0
30NH
0
IF304M20
L329M20
R316M20
R317M20
RF_RX_VHF_FE_OUT
1
OUT
1.5PF
DNP
24PF
C369M20
C368M20
330PF
4.7UF
C338M20
C340M20
DC_LIN_RX_VHF_LNA_B
22PF
10
1PF
C370M20
R380M20
C339M20
RF_RX_VHF_LNA_B
MMBD352
DNP
D301M20
2
3
1
27PF
39NH
5.6PF
120NH
6.8PF
39NH
27PF
18PF
IF
18PF
18PF
43PF
120NH
27PF
15PF
L314M20
L313M20
C335M20
C330M20
C331M20
L312M20
C332M20
C333M20
C334M20
C336M20
C337M20
C367M20
C366M20
L327M20
IF301M20
RF_RX_VHF_F1_D
RF_RX_VHF_F1_E
RF_RX_VHF_F1_B
RF_RX_VHF_F1_C
TL_RX_VHF_FE_IN
1
IN
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: ......