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FREQUENCIES FROM
540 KC
TO 800 KC
1.
The padder
(C11)
100 uufd.
located
on
bottom
of
L3
must
be
connected
in
the
circuit.
2.
Slug
on L3
should
be
screwed down
14
turns
Frequencies from
540 Kc to
approximately
600 Kc can be
resonated
with
C9.
If
complete resonance can not
be
obtained
on C9,
screw
slug on
L3
back
out
a
turn
at
a
time until
resonance
is
obtained
by
tuning
C9.
At 800
Kc
resonance will
be
with
C9
near minimum
capacity and slug
of L3
screwed
out
approximately
7
turns from
starting point
(14
turns down).
CAUTION
-
If
above procedure
is
not followed and padder
not connected,
it
will
be
possible
to
tune
crystals from
540 Kc to 800 Kc to
their
2nd
harmonic.
After resonance
has been
obtained,
the
crystal may
be set to
exact
frequency
by
using
the
frequency monitor.
Set the slots
of the
trimmer condensers, located
on the
front of the unit,
at
right angles
to
the
plane
of the
trimmer mounting screws.
With
the
crystal selector switch turned
to #1
crystal,
the
frequency
should
be
very close
to
zero.
If
not, adjust the
trimmer
FREQ.
#1
until frequency
is
zero or
to
point desired
for
operation.
Turn crystal selector switch
to #2
position and repeat above
operation with trimmer
FREQ.
#2.
The tuning
of
these condensers will not effect the resonate tuning
of the
unit and
C9
need not
be
bothered
again.
The tuning
of C9
will have very little
if
any effect on the
trimmer adjustments.
-2-
M5422 Oscillator
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