Power Amplifier (Intermittent Duty) - GE Mastr II Maintenance Manual

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FROM
EXCITEFt
SEE NOTE 2
J201
C202
1000
C234
z.zu~
L201
CR201
C230
czos
..
*
L202
C206
210
L203
8.2
AMPL-1
Q201
R20f
..
I
I
I
L
CZ50
"
R224
510
U4W
R223
3.9K
J/4W
R208
15K
!/4W
VR2Df
2.3V
C2C8
•
L2C5
E:
L204
~"
R209
6.8K
I/4W
C207
*
R210
100
I/.4W
VR202
5.4V
C209
•
t210
"
C21l
.JUF
SEE _ ---,
NOTE 1-....,i RT201 1
L_ ~o
_ _j
c~ c~
1000 1000
( It )
H3 H
CR202
CR203
240
.OIUF
R211
2.151(
C241
680
r-
I
R202
"
R2C3
•
R2C4
•
+
R222
6.81<
1!4W
R218
560
V4W
R219
1.8K
I/4W
R212
!.47K
R213
422K
L207
8.2
C212
6.8UF
R214
5..11K
POWER CONTROL
R2C<I
20
IW
----~ ~~--------~~
DRIVER
Q202
C259
*
L209
L208
RZ33
10 IW
L225
C217
C215
C216
.IUF
•
•
L l 8 t , 9
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R230
P.A
0203
1= 1C221
•
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R206 ff1J11
2.7 10
IW
J
1000
i
u
H
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I
RZI5
4.22K
H50
IO~:;
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ADJUST
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CR2~
RZZO
410
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f
iUF
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2.15V Q2ae
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~
£1.6V
- 1-+-_.____.
R217
C2:57
R2211
600
1000
120
li4W
I
I
_j
....,...., C272
3900
+ C248
500F
ens
1000
C25!1
1000
J205
J205 METERING
~
0
0 0 0
0 0 0 0
I
TOP VIEW
C237
•
·=
240
I/4W
L213
L212
{l9R622106, Rev. 16)
=4
*
C222 •
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C'223
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RZ;31
HI
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I
r~­
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L2.'9!5 (SEE NOTE II
: I
I
CR29~
Rl
~21~88
"'
- -
TO
J910-39
H2
C230
3900
C231
.022\JF
C233
.022UF
•
*
C280
C:!tll
*
L214
- ,
L296 CSEE NOTE II
I
____ I
I
CHASSIS GND
I
IBK
--.,
TO
J910--40
I
I
I
_j
---~-- ~----· ~---·-
LZZO L221 L2Z3
-l
I -
SE£
NOT'[
2
I
C 2 T 2 6 2
C265
•
•
•
I
C261 C263 C264
I
• •
..
I
I
I I
I
LOW PASS FILTER
I
L_
-- -- ---- ----
_j
W COMPONENT VAL UES AS R1..LOWS
LL L M H
COIIP. lOOfT. Z5-30 MHZ ~Q-36 MHZ 36-42MHZ 42-50MHZ
C20!5
120 IZO 120 220
C207 390 330 210 220
C208 330
210 210 220
C209 390
210 270 270
C210 330 Z20 220 180
C213 1000 1000 680 680
C214
••
..
47 39
C21S
••
5. 47 39
C217 330 330 220 180
C211 390 330 270 270
C2" 390
330 270
270
C220 330 270 270 180
C221 330 270 270 180
C222 1000 1000 680 680
r---~224 500 500
430 360
C225 500 500 430 360
C226 200 240 22C 180
C235 210 210 220 180
C236
22C 150 100
150
C237 220
150 100
100
C250 100 100 150 100
C258 100
C259 100
C260 91 68 56 5I
C261 110 91 68 56
C262 15 13 12. 10
C263
140 110 91 82
C264 120 100 82 75
C265 91 68 56 5I
R201
10 10 20 20
R202 5.6 5.6 2 1 1.2
R203 56 5.6 2.7 1.2
R204 5.6 5.6 2.1 1.2
R207
C280 6.8U
C281 6.8U
XIOIT
r.;;- - - - - -
--,
0
LBI-4732
I
I
TO J910
OH SYSTEIIIS
BOIUtD IW904)
;
:
J200}
>---+J207
ANT
~--------------1.J----}J203
TO AHT
SEE NOTE 2
J202
TO fiCVIt
r-----------------~sE=E~~==~.--~
c
VOLTAGE READINGS
VOLTAGE READINGS ARE TYPICAL READINGS
MADE WITH THE TRANSMITTER KEYED, AND
MEASURED WITH A 20,000 OHMS-PER-VOLT
METER WITH REFERENCE TO A- AND NOT
CHASSIS GROuND. AN RF CHOKE 125-50
MICROHENRYSI IS USED IN THE HOT METER
LEAD TO AVOID OETUNING RF CIRCUITS.
NOTE: READINGS AT Q20t COLLECTOR AND
IN THE POWER CC:WTROL CIRCUIT WERE
TAKEN WITH TH£ TRANSNITTER ADJUSTED
FOR 50 WATTS OUTPUT. THESE READINGS
WILL VARY DEF'EJIIOIHG CJif THE
SETTING
OF POWER ADJUST CONTROL R216.
PA ASSEMBLY
REV
HEAT SINK ASM
REV
l TR l TR
t9C321395GI A
"'"' t9C32129:5G2
A
....
C<(
19821968861
Z>< 19C321295 63 A
.. u
.....
~
. .
19C321295G4
•
19C321295 69
•
19C321295GIO
•
198219688613
19C32129!5811
•
19C32129!5612
I
J208 SHIELD
OF W904
NOTE: CHANGES TO THIS DIAG .
MAY AFFECT 19R622108.
IN ORDEII TO IIETAIN RATED EQUIPMENT
P'EIIIFOIIMANCI£. tfii[P'LACEMENT OF ANY
SERVICE PA.IfT SHOULD 5E WADE ONLY WlTH
A COMPONEHT HAVIIiiG THE SPECIFICATIONS
SHOWff C. THE PAIIHS L~T FQIII THAT PART
NOTES:
L CAL.LEO FOJt ON
~LI9C3ZI29S.
Z..SOQ MICRO STRIP, PART OF PWil
l. .JJ.-INOICATES A-
*
-INDICATES VEHICLE GROUND
CPNT. 80. ASM
REV
FREQ. RANGIE
LTR
19041796861 0 25-30 IlHZ
:19D4179H62
c
3Q . . .
IlHZ
19D41~63 E 36-42 IlHZ
19041796184
,
42-50 IlHZ
190417968
cu
D 25-30
IlHZ
190417968 G2
c
30-38
MHZ
190417H8 G3
F
36-42 MHZ
19D4179UCi4
F 42-50
MHZ
SCHEMATIC DIAGRAM
25--50 MHz, 50-WATT STATION
POWER AMPLIFIER 19C321295Gl-G4
Issue 4 17
•