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ARD
A426 (19D413129-G3)
ove r e c e i v e r f r e q u e n c y r e s p o n s e .
R30 a n d R78.
d Encoder/Decoder A428 (Model 4EK16A10)
F i l t e r A429 (19C3 11797-G2)
x c e s s i v e r o l l - o f f
a t 300 H e r t z .
19E500881-G1 THRU -G4
Lze t h e R.F.
A m p l i f i e r a n d
t o
i m p r o v e
?nd t u n i n g of t h e m u l t i p l i e r a s s e m b l y .
ie R.F.
a m p l i f i e r b o a r d .
Changed C5,
on t h e m u l t i p l i e r a s s e m b l y .
Diagram w a s :
I e
c r i t i c a l s q u e l c h a c t i o n .
:53 a n d a d d e d R84.
s a t e f o r v e n d o r c h a n g e .
:26.
, o r a t e s i l i c o n d i o d e s .
R 3 a n d CR4.
CHASSIS
&
RF ASSEMBLY 19E500881-G2 a n d G4
REV. H
-
To i m p r o v e band-end
t u n i n g .
Changed C6 a n d C8.
REV. J
-
T o r e m o v e u n n e c e s s a r y p r o t e c t i o n .
D e l e t e d CR1.
CHASSIS
&
RF ASSEMBLY 19E500881-G1 a n d G3
REV. H
-
To r e m o v e u n n e c e s s a r y p r o t e c t i o n .
D e l e t e d CR1.
REV. J
-
To p r e v e n t o s c i l l a t i o n s i n t h e h i g h I F a m p l i f i e r
a n d m i x e r .
Changed C2 o n t h e I F a m p l i f i e r
a s s e m b l y 19B216356Gl
&
G2.
Added C8 t o F i r s t
M i x e r a s s e m b l y 19C311974Gl a s p a r t o f L3.
SCHEMATIC W A S :
REV.
K
-
To i n c o r p o r a t e a new t r a n s i s t o r .
Changed Q410 a n d Q411.
CHASSIS
&
RF ASSEMBLY 19E500881-G2 a n d G4
REV. L
-
T o i n c o r p o r a t e a new t r a n s i s t o r .
Changed Q410 a n d Q411.
!
s q u e l c h a c t i o n a t -30"
C.
/lo.
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