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Heathkit SB-401 - 8.6 MEGAHERTZ TRAP ADJUSTMENT; CARRIER GENERATOR

Heathkit SB-401
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Page
92
(
)
Key
the
Transmitter
and
adjust
the
slug
of
the
3.5
driver
PLATE
coil
for
a
maximum
indication
on
the
VTVM.
(Readings
of
35
volts
or
higher
should
be
obtained,
depending
on
band.)
Readjust
the
slug
of
the
3.5
GRID
driver
coil
for
a
maximum
indication
on
the
VTVM.
Place
both
BAND
switches
in
the
7.0
position.
Adjust
the
slug
of
the
7.0
PLATE
driver
coil
for
a
maximum
indication
on
the
VTVM.
Readjust
the
slug
of
the 7.0
GRID
coil
for
a
maximum
indication
on
the
VTVM.
Repeat
this
same
procedure
for
each
setting
of
the
BAND
switch
through
28.0
by
adjusting
the
corresponding
PLATE
and
GRID
driver
coils
for
a
maximum
indication
on
the
VT
VM.
Set
the
BAND
switches
to
29.0.
Adjust
the
DRIVER
control
on
the
panel
for
a
maximum
indication
on
the
VTVM.
Adjust
the
slug
of
the
29.0
driver
grid
coil
(on
the
chassis
by
the
rear
section
of
the
driver
capacitor)
for
a
maximum
indication
on
the
VTVM.
Gag
HeatTHHIT
8.6
MEGAHERTZ
TRAP
ADJUSTMENT
NOTE:
Leave
the
VTVM
RF
probe
connected
to
the
bare
wire
between
pins
5
of
V10
and
VII.
(
)
Remove
the
15.895
megahertz
crystal
from
the
SB-303
Receiver.
(_)
Place
the
Transmitter
BAND
switch
in
the
7.0
position
and
set
the
LMO
slide
rule
Dial
to
3.
(_)
Place
the
FUNCTION
switch
in
the
SPOT
position.
(
)
Turn
the
MODE
switch
on
the
Transmitter
to
the
CW
position.
(
)
Advance
the
LEVEL
control
fully
clockwise.
(
)
Set
the
DRIVER
control
fully
clockwise.
( )
Set
the
FREQ
control
to
UNLOCKED.
(_
)
Adjust
the
variable
capacitor
on
terminal
board
#1
(see
Figure
2-2
fold-out
from
Page
93)
for
minimum
on
the
VTVM.

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