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3.4 AM Alignment Procedures (Function iwitch in the "AM" position)
'1
.
AM lF Alignment
Stop
Sign.l So(l rc.
Conn6ction
Sign.l
lndicator
Connsction
Sor Dbl
Pointer toi
Adiun
1
Sweep generator to
O S C V a r i a b l e C a p .
450 kHz marker
O s c i l l o s c o p e t o T . P .
O u i e t p o i n t o n b a n d
LA02 & LAO3 for m6ximum
ano symmetflc response.
2 . M W R F A l i g n m e n t
3.
LW RF Alignment
Test Loop
FigurB 3. Application of AM Signtl
St.p
Signal Sourca
Conmction
Signal
lndic.tor
Connoction
S€t tho Dioir.l
Reado0t Fr€qu6ncy
Adjust
A p p l y t h e s i g n a l t o
t h e A M b a r a n t e n n €
from rhe RF generator,
u s i n g t h e t e s t l o o p .
a s p e r t h e F i g u r e 2 .
520 kHz
c h a n n e l o u t p u t
T u n i n g c a p a c i t o r
m i n i m u m c l o s e d .
LB04 for maximum output,
1,630 kHz
T u n i n g c a p a c i t o r
CBO2 for maximum output.
600 kHz
600 kHz
L B 0 1 f o r m a x i m u m o u t p u t .
4
1 , 4 0 0 k H z
1,400 kHz
CB01 for maximum output.
Rep€at steps 1 t o 4 d n e c e s s a r y t o o b t a i n m a x i m u m s e n s i t i v i t y .
Al\4 Loop Antenna
Stop
Sigrul SoU rce
C,onn€ction
Signal
lndic€tor
Connection
Set ohl
Pointor to
Adjun
I
R F g € n o r a t o r t o
Alvl an'tenna t6rminals
t h r o u g h I H F d u m r r r y
1 4 5 k H z
'l45 kHz wirh
tuning gang closed.
L803 for maximum output.
2
380 kHz
380 kHz with
tuning gang op€n.
CB02 for maximum output.
't70 kHz
1 7 0 k H z
LB02 for rmximum outpul.
4
350 kHz
350 kHz
CBo1 for maximum output.
5
450 kHz
T u n i n g g e n g c l o s 6 d .
LB05 for minimum output.
Rep€at steps 1 to 4 as necossary to obtain maximum senritivity.
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