Schematics, Board Overlays, and Parts Lists – VHF
: Transceiver (RF) Section
8-7
6871620L01-C
May 28, 2008
Figure 8-6. VHF Transceiver (RF) Receiver Front End Circuit
C473
NU
120pF
910pF
R452
C414
100K
L412
27nH
15nH
L453
0.1uF
C420
3.3K
R432
1K
R401
L470
22nH
L472
180nH
BFQ67W
Q430
R430
10
15nH
L415
2.2pF
C476
V5R
C479
R412
100K
4
2
3
V5R
0.1uF
T470
XFMR
5
NC
6
1
22nH
L433
C491
13pF
22
R434
C435
6.8pF
220nH
L480
100K
R411
L490
820nH
82nH
L410
24pF
.01uF
C481
C416
330pF
C472
L432
100nH
D411
1SV305
7
RFN
4
RFP
5
C433
0.1uF
D
D
V
B
D
N
G
1
1
1
D
N
G
3
1
IFN
8
IFP
9
LOIN
10
NC1
3
NC2
6
NC3
U470
MX2072A
12
BBP
BDIV
2
1
100nH
L431
910pF
C480
27nH
L451
330pF
C477
C455
L474
0.27uH
24pF
33nH
L471
L454
15nH
D452
1SV305
V5R
1000pF
C432
4.7uF
C475
24pF
L430
C450
51nH
1SV305
D412
820nH
L491
120pF
C452
100
R470
1SV305
D414
T471
XFMR
4
6
1
2
3
120pF
C413
4.7uF
C411
C451
120pF
L413
27nH
24pF
C410
6
D
N
G
IN
1
OUT
5
L411
15nH
FL490
MFI44Q2
1
D
N
G
2
3
2
D
N
G
4
3
D
N
G
4
D
N
G
6
5
D
N
G
7
8
8.2pF
C436
C434
0.1uF
1SV305
D451
C478
16pF
0.1uF
C456
.01uF
C482
100K
R433
16pF
C470
R451
100K
1SV305
D453
D413
1SV305
C417
0.1uF
C471
L450
82nH
C490
18pF
D454
1SV305
27nH
L452
10
910pF
C474
R435
100K
LOIN
MX_IN
RXIF
R431
V5R
RXIN
DAC2
Summary of Contents for ASTRO XTSTM 4000
Page 1: ...COLOR CHORDS 7 ASTRO XTSTM 4000 Portable Radio Detailed Service Manual ...
Page 2: ......
Page 16: ...May 28 2008 6871620L01 C xiv Commercial Warranty Notes ...
Page 22: ...May 28 2008 6871620L01 C 1 6 Introduction Notes ...
Page 26: ...May 28 2008 6871620L01 C 2 4 Radio Power Notes ...
Page 56: ...May 28 2008 6871620L01 C 3 30 Theory of Operation Notes ...
Page 100: ...May 28 2008 6871620L01 C 6 8 Troubleshooting Waveforms Notes ...
Page 194: ...May 28 2008 6871620L01 C B 2 Motorola Service Centers Notes ...
Page 204: ...May 28 2008 6871620L01 C Glossary 10 Glossary Notes ...
Page 209: ......