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KDK FM-2016A - Page 12

KDK FM-2016A
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4.
ADJUSTMENTS
ALL
KDK
TRANSCEIVERS
HAVE BEEN
CAREFULLY
ALIGNED
AND
INSPECTED
PRIOR
TO
SHIPMENT
AND
WE
DO
NOT
RECOMMEND
ATTEMPTING
FURTHER
ADJUSTMENT
WITHOUT
THE
PROPER
TOOLS
AND
TEST
EQUIPMENT.
HOWEVER,
AGING
OF
PARTS
MAY
RESULT
IN
DRIFTING
OF
SOME
CONTROLS
PERIOD
OF
USE AND
THE
FOLLOWING
DESCRIBED
ADJUSTMENTS
MAY
BE
MADE
IN
THE
FIELD.
ANY
OTHER
ALIGNMENT
OR
TUNE-UP
SHOULD
NOT
BE
ATTEMPTED
WITHOUT
THE
PROPER
TESTING
EQUIPMENT
AND
WE
RECOMMEND
RETURN
TO
THE
AUTHORIZED
DEALOR
OR
NATIONAL
DISTRIBUTOR.
a)
RECEIVE
"S"
METER
SENSITIVITY
CONTROL
Adjusted
to
read
full
scale
with
a
20dBm
input.
Adjust
control
VRL
of
Main
unit
in
clock-wise
direction
to
increase
sensitivity.
b)
DISC.
METER
ZERO
BALANCE
ADJUSTMENT
Adjust
by
varying
control
VR6
of
Main
Unit.
Short
gate
terminal
of
Q12
to
ground.
c)
RIT
ALIGNMENT
Set
control
to
center
click-stop
position,
pull
out
on
knob
and
switch
meter
to
DISC
position.
Apply
correct
frequency
input
to
antenna
receptacle
and
adjust
L9
of
Main
Unit
to
center
needle
on
zero.
(Apply
hot
soldering
iron
tip
to
proximity
of
tuning
slug
of
this coil
to
melt
sealing
wax
on
slug.
CAUTION:
Overheating
may
damage
coil.)
d)
MICROPHONE
AMPLIFIER
GAIN
Adjust
using
control
VR7
of
Main
Unit.
Turning
in
clock-wise
direction
increases
gain.
This
control
is
best
left
untouched
unless
a
severe
change
of
gain
is
noted
as
for
instance
when
changing
to
a
different
type
microphone.
Over
increasing
will
result
in
constant
clipping
and
distortion
of
transmitted
signal.
e)
TRANSMITTER
DEVIATION
CONTROL
Adjusted
for
+5KHz
at
factory.
Turning
control
VR8
of
main
unit
in
a
cluck-wise
direction
will
increase
deviation.
if).
TRANSMITTER
LOW
POWER
yk=
Continuously
adjustable
between
1
watt
and
maximum
power
using
control
VR1
of
Main
Unit.
(Do
not
set
below
1
watt).
Clock-wise
rotation
increases
power
output.
g)
TRANSMITTER
HIGH
POWER
Continuously
adjustable
between
1
watt
and
maximum
power
using
control
VR4
of
Main
Unit.
Turning
in
clock-wise
direction
increases
power.
(Do
not
set
below
1
watt.)
h)
TRANSMITTER
POWER
METER
Adjusted
at
factory
to
give
reading
of
8
for
a
power
output
of
15
watts
into
50ohm
dummy
load.
Setting
can
be
changed
by
varying
control
VR2
of
Main
Unit.
i)
MULTI-PURPOSE
TONE
OSCILLATOR
The
tone
oscillator
is
IC-4
located
on
the
main
unit.
It
is
designed
to
provide
ei-
ther
a
burst
or
continuous
tone
as
selected
by
the
internal
switch.
Its
frequency
can
be
set
by
changing
capacitors
and
adjusting
the
trim-pot
according
to
the
fol-
lowing
table:
C-124
Frequency
Range
Remarks
-068mfd
Appx.
60
-
130Hz
FM-2016A
set
at
100HzZ
-068
"
90
-
210Hz
a
-0047
"
"
1300
-
1800Hz
FM-2016E
set
at
1750Hz
1
a
N
~~
'

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