AMERITRON AL-80A Manual de instrucciones - Página 5
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7. Key the exciter (no drive) and observe the plate current on the 0-700 mA scale. Plate current should now reacj
between 50 mA and 100 mA.
B . A p p l y o n l y e n o u g h d r i v e t o i n d i c a t e a g r i d c u r r e n t o f 5 C m A o r a n l p o f n o m o r e t h a n 2 0 0 m A . T u n e t h e p L A T E
c o n t r o l f o r m a x i m u r n g r i d c u r r e n t . l t i s n o r m a l f o r t h e p l a t e c u r r e n t t o d i p a t t h i s p o i n t . l f t h e g n d c u r r e n t g o e s o v e r
1 0 0 m A r e d u c e t h e d r i v e a t o n c e . U n k e v t h e e x c i t e r .
9 . P l a c e t h e M U L T I M E T E R s w i t c h i n t h e P O p o s i t i o n a n d o b s e r v e t h e 0 - 2 0 0 0 p e a k R . F . v r a t t s s c a l e . A p p l y t h e s a n r e
drive again and adlust the LOAD and PLATE controls for maximum output on the 0-2000 scale.
1 0 . I n c r e a s e t h e d r i v e u n t i l 1 2 5 m A o f g r i d c u r r e n t i s i n d i c a t e d . A d j u s t t h e L O A D a n d P L A T E c o n t r o l s a g a i n f o r m a x -
i m u m o u t p u t . T h e g r i d c u r r e n t w i l l b e l o w e r n o w .
1 1 . A d v a n c e t h e d r i v e t o 2 0 0 m A o f g r i d c u r r e n t . A d 1 u s t t h e L O A U a n d P L A T E c o n t r c l s { o r m a x i m u m o u t p u t p o w e r
(Repeat this step twice.) The output should be around I000 watts nor.v with iO0 watts of exciter power.
12. Apply enough drive to indicate either t000 watts of output power or 200 mA of grid current. Re-peak the LOAD
. and PLATE controls. The grid current must not be over 200 mA, the plate current over 55OmA or the ouipur over
.1200 watts.
13. In CW operation the drive power should be reduced until the plate current is 400 mA or less. For SSB operation
t h e m o d u l a t i o n c r e s t s h o u l d n o t e x c e e d 4 0 0 m A p l a t e c u r r e n t , 1 0 0 m A g r i d c u r r e n r o r 1 2 0 0 w a t t s P E P o u t p u t
T U N I N G
C H A R T ( T y p i c o l )
F R E Q U E N C Y
B A N D S W I T C H
P L A T E C O N T R O I ,
L O A D C O N T R O L
r . 8 5
1 6 0
li
'
l c
l o
t . t
1 , 1
' )
2 l . 2
, : . ' 4 .
)
: - - ) Q
1
B O
B O
2 0
L 5
1 0
r 0
r _ 6 0
B O
B O
4 0
2 0
2 0
L 5
4
1 I -
q.
_ / )
'l
t-
1
e
: : A L - 8 0 A X ( e x p o r t m o d e l )
I
The AL-80A will operate with full output on all wARC bands except 24.5 MHz. The
AL-BOAX (export modet) wiil operare with fuil output on ail wARC bands.
STANDARD FREQUENCY COVERAGE
AL.8OA
1 6 0 m e t e r s
1 . 8 - 2 . 0 M H z
80 meters
3.3-4.4 MHz
40 meters
6.3-8.3 MHz
2 0 m e l e r s
9 . 5 - 1 5 . 5 M H z
' 1 5 m e t e r s
1 5 . 5 - 2 1 . 5 M H z
A L . s O A X
160 meters
80 meters
40 meters
20 meters
15 meters
10 meters
1 . 8 - 2 . 0 M H z
3 . 3 - 4 . 4 M H z
6 . 3 - 8 . 3 M H z
9 . 5 - 1 5 . 5 M H z
1 5 . 5 - 2 1 . 5 M H z
2a-29 MHz