8-54
Schematics, Board Overlays, and Parts Lists
: Transceiver (RF) Boards
November 16, 2006
6881094C31-E
Figure 8-37. NLE4272H UHF Range 1 Frequency Generation Unit (VCO) Circuit
TX2 VCO
RX1 VCO
RX2 VCO
TX1 VCO
L313
33nH
120pF
C316
VSF
NE68519
C307
120pF
100nH
Q304
L303
VSF
L321
NE68519
Q302
390nH
3.6pF
8.2pF
C340
390nH
C306
300
R307
L306
120pF
C326
22K
R319
D309
1
2
D310
1
2
22K
R303
R327
51K
51K
R322
R304
22
D312
1SV279
1
2
TN0200T
D
G
S
R321
Q307
D320
330
1.8pF
C312
Q310
1
2
0.1uF
C313
1
2
D313
D315
VSF
VSF
L317
390nH
1
2
D311
L320
27nH
14
VCC_BUFFERS
18
VCC_LOGIC
47
R315
7
RX_SWITCH
3
8
2
SUPER_FLTR
19
TRB_IN
16
TX_BASE
15
TX_EMITTER
1
TX_IADJ
TX_OUT
10
13
TX_SWITCH
11
GND_BUFFERS
9
GND_FLAG
GND_LOGIC
17
12
PRESC_OUT
5
RX_BASE
6
RX_EMITTER
RX_IADJ
RX_OUT
COLL_RFIN
4
20
FLIP_IN
R309
20K
50U54
U300
18
R306
3.3pF
C333
390nH
L302
1
2
R302
220
L305
D303
390nH
R311
22K
R325
22K
1.5pF
R323
20K
D
G
S
C332
D304
1
2
Q305
TN0200T
C303
1.8pF
1SV279
VSF
1.5pF
C323
22pF
C308
R324
C329
120pF
220
C341
3.6pF
390nH
C304
3.3pF
3pF
C301
L304
R305
51K
22nH
2
NE68519
Q303
L309
1
2
D306
1
D305
R312
33
22
R326
D307
1
2
NE68519
Q301
1
2
C327
D316
1SV279
R317
NC
120pF
Q311
VSF
VSF
20K
R313
5.6K
R332
C336
22
390nH
L318
120pF
22
R314
3.9pF
4.7pF
C322
C331
L310
22nH
R310
220
R318
220
3.3pF
C314
51K
R316
NC
18nH
120pF
C317
L311
L312
390nH
120pF
C320
C309
10pF
120pF
C305
20K
R301
TN0200T
D
G
S
R333
220
Q306
8.2pF
C324
3.3pF
C328
3pF
C330
8.2pF
C319
R308
300
3.9pF
C302
TN0200T
D
G
S
390nH
Q308
R320
22
L307
L314
68nH
D302
1
2
C318
120pF
390nH
L316
NC
1
2
390nH
L308
VSF
D301
8.2pF
C335
1
2
VSF
L315
390nH
NC
D314
C321
L301
390nH
C311
3pF
C310
3.6pF
1
2
NC
2.4pF
TXRF
RXLO
AUX4
TX1EN
AUX3
NC
D308
TX2EN
VCTRL
PRESC
RX2EN
AUX2
RX1EN
AUX1
10K
10K
22K
22K
63B81097C29-O
Summary of Contents for ASTRO XTS-5000
Page 7: ...vi Table of Contents November 16 2006 6881094C31 E Notes ...
Page 11: ...x List of Figures November 16 2006 6881094C31 E Notes ...
Page 17: ...November 16 2006 6881094C31 E xvi CommercialWarranty Notes ...
Page 31: ...November 16 2006 6881094C31 E xxx Portable Radio Model Numbering System Notes ...
Page 83: ...November 16 2006 6881094C31 E 3 44 Theory of Operation Encryption Module ...
Page 135: ...November 16 2006 6881094C31 E 5 44 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 175: ...November 16 2006 6881094C31 E 7 32 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 367: ...November 16 2006 6881094C31 E Glossary 10 Notes ...
Page 373: ...Index 6 November 16 2006 6881094C31 E Notes ...