Handbook

Table Of Contents
PBL UHF1/1A 1 & 2 Air Interface
Maintenance Handbook
H/book Number:-60-055900HBKM
Issue No:-2
Date:-20/10/2003
Page:-
47 of 85
5.1.5.4 Drg. Nō. 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
BYDAT EDESCRIPT IO NNo
ISSUE
USED O N
Fax (0494)764838
Little Chalfont(0494)763636
England
Aerial Facilities Ltd
ISSCUSTOM ER DRG .No
TITLE
SCALE
TWO DECIMAL PL ACES ± 0 .1mm
O NE DECIM AL PL ACE ± 0 .3 mm
NO DECIMAL PLACE ± 1 mm
TO L ERANCE S
BY AERIAL FACILITIES LTD.
PERMISSIBLE ONLY IF EXPRESSLY AUTHORISED IN WRIT ING
REPRO DUCTIO N O R USE O F T HIS DESIG N BY O THERS IS
THIS IS A PROPRIETARY DESIGN OF AERIAL FACILITIES L TD.
UNL ESS OTHERWISE STATED
AL L DIMENSIONS ARE IN mm
APPD
CHKD
DAT EDRAWN
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
2 7 /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)
1 9 /1 /99
SEW