Figure 7-59. Hue4039A Receiver Mixer Schematic - Motorola ASTRO XTL 1500 Detailed Service Manual

7-76
RECEIVED RF
L5381
MIXER_RF_IN
8.2nH
C5389
12pF
+24.5 dBm I/P from the injection amp
L5380
LO
6.8nH
R5388
0
C5375
C5374
3.9pF
2.4pF
C5380
L5392
12nH
6.8pF

Figure 7-59. HUE4039A Receiver Mixer Schematic

June 15, 2005
C5377
C5379
15pF
9.1pF
L5382
C5390
L5384
12nH
6.8pF 6.8nH
NU
INJECTION
L5383
R5381
3.3nH
10
NU
NU
C5381
R5382 C5378
R5380
6.2pF 5.6pF
470
470
NU NU
NU
NU
B
Schematics, Component Location Diagrams, and Parts Lists: HUE4039A (UHF Range 1) Main Board
THE RECEIVER INPUT SIGNAL AND THE
INJECTION SIGNAL GENERATED BY TH
E
RECEIVE SYNTHESIZER ARE MIXED TO
PROVIDE A 109.65MHz I-F SIGNAL.
109.65 MHz
I. F.
T5381
1
L5386
5
10nH
2
4
R5384 R5385
3
180
180
C5385
C5383
.01uF
.01uF
D5380
L5385
10nH
HIGH SIDE
C5382 C5388
SIGNAL
.01uF
.01uF
T5380 R5386
R5383
180
180
1
5
L5387
10nH
2
4
3
L5390 C5391
68nH
33pF
R5387
47
L5388
C5386
68nH
33pF
A
D5381
10nH
L5389
SH5380
NU
delete,.
1
IF
6815854H01-A