Figure 9-11. Uhf Frequency Generation Unit (Rx Vco) Circuit – 3 Of 3 - Motorola ASTRO XTSTM 4000 Detailed Service Manual

9-12
D251
L251
680nH
2416307H01
VCTRL
C295
150pF
2113944A42
D252
Figure 9-11. UHF Frequency Generation Unit (RX VCO) Circuit – 3 of 3
May 28, 2008
AUX2
VSF_VCO
Q253
4815055H01
UMC5NT2G
R253
9.1K
0613952Q96
C254
R252
0.1uF
9.1K
2113946B04 C255
0613952Q96
150pF
2113944A42
C251 L254
8.2pF 680nH
2113944A23
2416307H01
C256
15pF
2113944A27
C252
C257
12pF
D253
2113944A26 20pF
L253
2113944A80
11.7nH
IDCTR
L252
C253
2471912M01
36nH
1.5pF
2415427H37
2113944A05 C259
68pF
C258
2113944A36
15pF
D254
2113944A27
C269
C296
0.1uF
100pF
2113946B04
47K
47K
10K
4.7K
R269
100
0613952Q49
C262
0.1uF
2113946B04
L256
R257
680nH
56
2416307H01
0613952Q43
C263
150pF
2113944A42
C264
2.2pF
2113944A09
C260
8pF
Q251
2113944A73
R262
4871915M01 3.3K
R263
0613952Q85
200
0613952Q56
L255
680nH
2416307H01
R256
180
0613952Q55
Schematics, Board Overlays, and Parts Lists – UHF: Transceiver (RF) Section
R261
100 NP
0662057M50
Rx_VCO_Out
L258
24nH
2113944A40
2415427H33
C265 100pF
Q252
C268
C267
4885061Y01
16pF 8.2pF
2113944A79 2113944A23
C266
150pF
2113944A42
RXLO
PRES_RX_IN
6871620L01-C