ADDITIONAL
FINE
TUNING
TECHNIQUES
To
receive
the
optimum
from
your
antenna,
you
must
take
time
to
fine
tune
the
antenna.
What
are
the
antenna
adjustments?
They
are:
make
the
front
surface
flat,
be
sure
the
feed
looks
at
the
center
of
the
dish,
and
set
the
proper
focal
length.
You
must
also
be
pointed
at
the
satellite
and
have
the
feedhorn
skew
properly
adjusted.
Many
of
the
adjustments
are
done
without
any
measurement
of
the
signal,
and
in
fact
require
no
signal
at
all.
The
adjustment
of
making
the
front
surface
flat,
adjusting
the
focal
length,
and
aligning
the
feed
will
be
done
without
signal.
You
will
use
the
strings
and
the
back
braces
to
make
the
dish
flat,
a
focal
finder
and
measure
tape
to
align
the
feedhorn
to
find
center,
and
set
the
focal
length
using
a
measure
tape
to
measure
from
dish
to
feedhorn.
You
will
use
a
satellite
tool
to
locate
signal
in
further
steps
of
fine
tuning.
We
feel
that
you
must
use
strings
to
assure
the
front
of
the
dish
is
flat.
The
strings
must
be
taut
and
run
from
brace
to
the
opposite
brace
at
180
degrees.
A
dish
with
8
braces
needs
four
strings.
Do
all
adjustments
with
the
braces
loose.
The
strings
must
touch
at
the
center,
if
they
do
not,
sight
the
dish
from
the
side
to
see
which
braces
should
be
slightly
adjusted
to
make
the
front
surface
of
the
antenna
perfectly
flat.
CAUTION:
do
not
over
tighten
the
8
bolts
that
hold
the
dish
to
the
ring
as
they
can
distort
the
dish.
The
easiest
way
to
assure
yourself
that
the
feedhorn
is
looking
directly
at
the
center
of
the
antenna
is
to
use
a
Focal
Finder
(SEE
PHOTO
“A”
BELOW)
or
to
make
a
tool
to
assist
in
finding
the
center
of
the
antenna.
You
can
if
no
focal
finder
is
available,
cut
a
1”
X
4”
board
to
the
length
of
the
antenna’s
focal
length.
Held
vertically
against
the
feed
it
should
point
at
the
center
of
the
antenna,
this
will
be
true
at
the
horizontal
plane
as
well.
DH
recommends
using
an
AI
Turbo
S2
made
by
Applied
Instruments
or
another
tool
such
as
a
spectrum
analyzer
to
locate
your
satellite
signal
in
order
to
complete
the
following
steps:
Setting
the
Azimuth:
To
set
the
azimuth
of
the
system
you
will
use
the
base
can
and
a
tool
to
locate
and
measure
signal.
Find
a
satellite
signal
using
the
AI
Turbo
S2
or
another
satellite
tool
that
will
show
signal
spiking.
Any
signal
strength
will
work.
This
is
your
reference
point.
Now
you
will
go
from
bad
signal
to
bad
signal.
From
this
reference
point
you
will
move
the
antenna
left
of
the
reference
point
to
see
if
the
signal
gets
better
or
worse
and
right
of
the
reference
point
to
see
if
this
makes
it
better
or
worse.
When
you
see
the
location
of
the
base
can
for
the
best
signal,
you
will
tighten
down
the
set
screws
on
the
base
can.
(Special
Note:
It
is
best
to
make
a
mark
on
the
pole
and
base
can
to
reference
your
starting
point
before
making
any
moves
with
the
base
can.
Re
‐
mark
your
base
can
and
pole
so
that
you
now
know
the
location
that
is
allowing
the
strongest
satellite
signal.)
Setting
the
Elevation
T
he
fine
tune
adju
s
tment
for
the
e
l
ev
a
tion
of
the
AZ
‐
EL
Mount
is
v
ery
sim
pl
e
to
operate
.
F
i
rst
eleva
t
e
the
an
t
enna
t
o
t
he
satell
i
te
an
d
l
ock
the
eleva
t
ion
rod
d
o
wn
.
Tight
en
the
U
‐
b
o
l
t
on
th
e
tub
e
and
l
oo
s
e
n
the
bolts
on
th
e
bracket
that
ho
l
d
the
tube
.
Th
e
tub
e
now
can
be
mov
e
d
u
p
and
do
w
n
by
loos
e
ning
and
tighten
i
ng
th
e
n
uts
o
n
either
side
of
t
h
e
b
racket
.
Y
o
u
c
an
m
ake
v
ery
sm
a
l
l
a
djustments
with
t
hi
s
bracket,
t
h
us
optim
i
z
i
ng
yo
ur
signal
.
Skewing
the
feedhorn:
You
will
rotate
the
feedhorn;
again
going
from
left
or
right
of
the
marked
reference
location
for
your
feedhorn,
to
find
your
strongest
signal.
Once
you
find
your
strongest
signal
tighten
down
into
place.
Keep
in
mind
when
you
are
making
these
last
“Additional
Fine
Tuning
Techniques”
very
small
moves
will
be
needed
to
make
the
best
improvements
in
signal
strength.
PHOTO
A
Focal
Finder
to
Locate
Center
of
Antenna
AI
Turbo
S2
Made
By
Applied
Instruments
Page
12
