Schematics, Boards Overlays, and Parts Lists
: Main Board Block: UHF1 (84012513001_A)
8-9
Figure 8-7. Receiver Front End Circuit
BFR380F
10
9.1PF
1.5PF
100PF
1.2K
2.2NH
R1935M20
L1936M20
U1932M20
C1901M20
R1972M20
C1971M20
C1936M20
RF_RX_FE_UHF1_LNA_C_13A
RF_RX_FE_UHF1_LNA_E_13A
23
1
100PF
2.7
120K
4.7UF
33
347
BC858CD
BC858CD
75K
10K
C1924M20
C1923M20
R1924M20
R1923M20
Q1922M20
Q1922M20
E1921M20
R1921M20
R1922M20
R1925M20
DC_RX_UHF1_LNA_D_13A
CTRL_RX_FE_UHF1_LNA_B_13A
DC_RX_UHF1_LNA_A_13A
DC_RX_FE_UHF1_LNA_B_13A
DC_RX_UHF1_LNA_C_13A
4
3
5
1
6
2
CTRL_RX_UHF1_LNA_A = 3V (HIGH), LNA'S TURN ON
22K
22K
MUN5212T
IF
IF
INPORT
INPORT
Q1920M20
IF1903M20
IF1902M20
DC_LIN_1_8V_A
DIG_CTRL_RXU
1
1
2
3
1
IN
IN
INPORT
10K
440
63
100PF
337
0.1UF
9.1K
IF
R1906M20
C1926M20
C1925M20
R1910M20
IF1901M20
ANA_RX_FE_TUNE
1
IN
IF
INPORT
IF1900M20
TL_RX_UHF1_FE_IN
1
IN
10K
1SV305
10PF
18NH
5.6PF
3.6NH
L1908M20
R1907M20
C1953M20
C1952M20
VR1906M20
L1909M20
2
1
1SV305
18NH
2.7PF
7.2NH
3.3PF
10PF
5.6PF
VR1905M20
C1935M20
C1929M20
C1928M20
L1910M20
L1915M20
C1938M20
2
1
PREFILTER MODIFIED XTS5000
6.8PF
2.7PF
C1939M20
C1958M20
75PF
2.4PF
DNP
4.7UF
18NH
47NH
MMBD352
0
10
100PF
100PF
C1940M20
L1934M20
C1922M20
C1920M20
D1970M20
R1970M20
C1970M20
L1935M20
R1936M20
C1931M20
2
3
1
18NH
0
5.6PF
DNP
8.2PF
10PF
3.6NH
IF
1SV305
18NH
1SV305
OUTPORT
10PF
DNP
10NH
22PF
22PF
DNP
DNP
3.9NH
4PF
VR1908M20
L1913M20
VR1907M20
C1964M20
C1963M20
L1914M20
L1912M20
C1957M20
R1900M20
C1900M20
L1900M20
IF1904M20
C1932M20
C1903M20
C1930M20
L1901M20
RF_RX_UHF1_FE_OUT
1
2
1
2
1
OUT
10K
INPORT
10K
100PF
0.1UF
9.1K
R1908M20
C1955M20
C1954M20
R1911M20
R1909M20
ANA_RX_FE_TUNE
IN
POSTFILTER MODIFIED XTS5000
2.7PF
5.6PF
7.5PF
6.8PF
2.7PF
3.6NH
C1961M20
C1960M20
C1959M20
C1956M20
C1942M20
L1917M20
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: ......