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7.
8.
9.
Insert a small
amount
of exciter drive until the
plate
eurrent
begins
to rise to
approximately
400mA.
Rotate the
Tune
Control for
maximum
output
on
your
station
wattmeter.
Go between Tune
and Load
for
maximum
output.
1
KW
input (Plate Voltage
x
Plate
Current
=
Power
Input)
Example: PIate Current =
40OmA
Plate
Voltage
=
2500 V
DC
.4
x
2500
S
=
1000
Watts
Input
10.
Inerease
drive power.
Repeat
steps 8 through
10
until
you
obtain desired
output.
11.
During tune up
alternately
monitor
Grid
and
Plate
Current.
12.
Grid
current
can be reduced by
sl ightty
decreasing
the
Load
control.
Turn
control to right,
elockwise.
13.
ALWAYS TT]NE FOR MN(IMUM OUTPUT
!
14.
TI]NE
FOR MAXIMI,]M OUTPUT
ATALL
TIMES
!!!!!!!!!!!!!!!!!!!!!!!
TARNING
CT]RRENT
LIMITATIONS
FOR
NORI\4AL
OPERATIONs
Plate Current.
.
Grid Current
..
r
. not to
exeeed 950 MA.
in full
tune-up
under tune up,
RTTY,
or
SSTV,
never
to
exeeed
350
mA.
on SSB
voiee
peaks
shoul
d average
I
ess
than
25()mA
whi
le
operat
ing.
.on Cw
between 100
and
25OmA, depending
on
aa
a
ao
sending
speed.
.
SENYICB
DATA
ct\ItTIe{
EXTREME CARE MUST
BE
TAI{EN I{ITENEVER MAI{ING
AI\TY
ADJUSTMENTS INSIDE
THE
LKS()()ZB.
Remqying--Igg-QqygL.
After
eompl
etely
diseonnect
ing
the
LK500zB
from
power
wait
30
minutes
so
aIl electrolytic
eapacitors
have
diseharged through
their
bleeding
resistors.
The
top
eover
ean
then
be
safely
removed
by taking out the top
and
side
row of
serews.
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