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c) Fine adjustment
Once again slacken the bolt on the inclination scale and tilt
the antenna lightly upwards and downwards until either the
antenna meter shows the strongest antenna signal or visual
assessment is judged to achieve the best picture: To do this,
tilt the antenna far enough upwards and downwards to get to
the limits when the rst “little sh” (analogue) or “little blocks”
(digital) appear on the screen. Position the antenna midway
between the two limit points.
Now alternately correct the direction (azimuth) and inclination
(elevation) until the measured results or the picture quality
show no further improvement.
Note: Tightening the nuts at the clamping piece can cause
the antenna to turn slightly! You should allow for this
at the ne adjustment stage (and if necessary make
use of it when starting the adjustment operation all
over again).
d) Finally tighten the antenna clamps
Then tighten the nuts at the clamping piece by hand, working
across diagonals. Then use a open-ended spanner (size 13) to
tighten up each of the wing nuts one turn ().
After this, tighten the bolts on the left and right of the clamp
of the inclination scale, using the hexagon key rst with
the short end to tighten them nger-tight and then with the
long end tighten them a further 1/4-1/2 turn (torque wrench:
5-10 Nm) ().
Finally check once again that the bolted connections are
secure.
Attach the cables to the carrier arm by clipping them into the
cable clips within the carrier arm and use cable ties to secure
them all along the antenna carrier, so that they cannot chafe
and suffer damage in the wind.
Zenith
Elevation angle
West
East
South
Azimuth angle
Horizon
Tighten by hand
Fully tighten: 1 ½ turns
17


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