Nautel VS1, Troubleshooting Manual

Page: 92 / 109

Issue 10.0 2018-10-29 SD-4
Figure SD-4: NAPA28B Pre-Amp PA PWB
82.5
R1
330uF
470uF
* C19
470uF
PRE-AMP BIAS
RF DRIVE
IPA V
0.1
C7
0.022
C8
0.022
C9
L1
0.043 μ H
1000pF
C20
RF OUTPUT
IPA BIAS
PRE-AMP V
0.022
C4
0.022
C5
0.1
C3
L6
0.022
C12
0.1
C10
L11
0.0175 μ H
0.5W
R2
27.4
L4
0.043 μ H
L5
0.082 μ H
L7
0.12 μ H
1000pF
C15
12pF
C13
12pF
C14
10pF
C17
47pF
C18
C19
*
63V
0.022
C21
0.1
C24
0.022
C22
L15
0.028 μ H
0.001
C23
30pF
C25
30pF
C26
C28
1000pF
L8
0.0355 μ H
C16
1000pF
L10
0.033 μ H
S2110063 V2
L2
NAPA28B
NAPA28
L13
L3 L12
R3
121
C1
1000pF
Q1
MRF6V2010N
1000pF
C6
47pF
C2
C29
68uF
63V
0.022
C11
NAPA28A
L14
0.082 μ H
L16
0.012 μ H
L17
0.012 μ H
30pF
C27
L9
0.0355 μ H
Q2
MRF6V2150NBR1