User Manual

PBL UHF 1 & 2 Air Interface
Maintenance Handbook
H/book Number:-60-055900HBKM
Issue No:-1
Date:-13/02/2003
Page:-42 of 42
5.1.5.4 Drg. No. 12-001870, 5Watt PA Circuit Diagram
POWER AMPLIFIER,450MHz,10W CIRCUIT DIAGRAM
12-001870
2A
DBS
19/09/92
C14
C19
TR1
L5
FB4
R1
C1
RF INPUT
C5
L4
C6 C7
L6
FB2
L2
TR2
C9
RF OUTPUT
L3 FB3
C8
FB1
L1
C13
R2
C11C17 C18 C12C16 C10C15
C4
C21
R4
C22
R5
R3
C20
BYDATEDESCRIPTIONNo
ISSUE
USED ON
Fax [phone]
Little Chalfont(0494)763636
England
Aerial Facilities Ltd
ISSCUSTOMER DRG.No
TITLE
SCALE
TWO DECIMAL PLACES ± 0.1mm ONE DECIMAL PLACE ± 0.3mm NO DECIMAL PLACE ± 1mm TOLERANCES
BY AERIAL FACILITIES LTD. PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRITING REPRODUCTION OR USE OF THIS DESIGN BY OTHERS IS THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES LTD.
UNLESS OTHERWISE STATED
ALL DIMENSIONS ARE IN mm
APPD
CHKD
DATEDRAWN
A 3
+ +
C2
C3
+ +
REG1 REG2
24V DC INPUT
CONDUCTORS SHOWN THUS: ARE 50 ohm STRIPLINES REFER TO 12-1801-2 & 12-1802-3 FOR COMPONENT POSITIONS REFER TO COMPONENT LISTS 12-1870-C1 & C2 FOR COMPONENT VALUES
12-1801
in
out
adj
in
adj
out
1 PRODUCTION ISSUE
19/9/92
DBS
2 CR0521 DJL
27/1/94
1n 1n
1n
1K
1K
1K
REF.
MONITOR 2nd STAGE
MONITOR
1st STAGE
1u220p 1u 560p 10n 220p 10n1u 1u
5R6 1R2
LM337TLM337T
1u
TCC596
TP5015
56p
1-14p1-14p1-14p
1-14p
56p
56p 120p
27p
2A
PRODUCTION ISSUE (CR0962)
19/1/99
SEW