Figure 7-35. Hud4022A Rf Power Amplifier (Rf Pa) Schematic (Sheet 2 Of 2) - Motorola ASTRO XTL 1500 Detailed Service Manual

Schematics, Component Location Diagrams, and Parts Lists: HUD4022A (VHF) Main Board
OUTPUT NETWORK/RFPA
INTERFACE
IF3700
VREVERSE_ON
IF3701
B(,1),A(,1)
RFPA_OUT D3704
IF3702
L3703
1.2u
K9.1V_ON
IF3703
B(,1),A(,1)
VFORWARD_ON
R3703 R3701
R3704
18. 18. 18.
B(,1),A(,1)
R3700
33
R3702
1K
B(,1),A(,1)
C3736
OUTPUT NETWORK/RX FE
470pF
INTERFACE
IF3704
RX_IN
C3735
470pF
6815854H01-A
L3721
D3701
25nH
470pF B(,1),A(,1) B(,1),A(,1)
C3734
L3720
C3701 30pF
28n
Sector RLS Lib
0 B(,1),A(,0)
L3700 L3732 B(,1),A(,1)
1.2u 25nH
B(,1),A(,1)
C3720
3.9pF
L3701
25nH
C3702
33pF
B(,1),A(,1)
D3705
D3702
C3700
470pF
C3703
470pF
B(,1),A(,1)
L3702
47nH
B(,1),A(,1)
L3704
C3704
1.2u
12pF
D3703
NP
NP
M3700 M3721
SHIELD SHIELD
1 1
L3725 L3722 L3726 L3723
25nH 25nH 25nH 25nH
B(,1),A(,1) B(,1),A(,1) B(,1),A(,1) B(,1),A(,1)
C3721 C3722
39pF
39pF
R3732
1.5K
R3730
100K
B(,1),A(,1)
R3731
30K
B(,1),A(,1)
L3731
18nH
B(,1),A(,1)
R3733 R3734
240 240
W = 20 mil
L3727
S = 45 mil
25nH
L = 400 mil
2
W = 90 mil
D3730
S = 55 mil
B(,1),A(,1) B(,1),A(,1)
W = 20 mil
1
L3724
22n
Sector RLS Lib
B(,1),A(,1)
B(,1),A(,1)
C3723
C3731 R3735
11pF
8.2pF 240
C3730
470pF

Figure 7-35. HUD4022A RF Power Amplifier (RF PA) Schematic (Sheet 2 of 2)

7-43
R3739
R3737
100K
1.5K
B(,1),A(,1)
R3738
D3731
30K
B(,1),A(,1)
C3732 C3733
8.2pF 470pF
B(,1),A(,1)
J3700-1
1
J3700-2
2
L3737
J3700-3
1.2u
3
L3730
18nH
73D02970C73-O
R3736
SHEET 17 OF 23
240
June 15, 2005