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c) Fine alignment
Loosen again the screw on the elevation scale and
move the antenna slightly up and down until
– the strongest signal is shown on the measuring
instrument
– or best picture quality is obtained on the TV set. Move
the antenna slightly up and down until you see the first
„spikes" on the screen of your TV set. The best picture
quality will be found in the middle of these boundery
positions.
Now alternately correct the direction (Azimuth) and the
inclination (Elevation) until there is no more improve-
ment of the measured value or the picture quality.
Note: On tightening-up the nuts on the mast clamp, a
slight movement of the antenna may occur! You need to
take this into account during fine adjustment (and exploit
it to get a very precise adjustment if need be).
d) Final tightening up of antenna
Finally, hand-tighten the wing nuts on the mast clamp
in alternation. Then tighten the wingnuts by 1 1/2
turns using an open-ended spanner
(SW 17 mm) (torque wrench 10-20 Nm).
Next tighten up the screws at left and right on the inc-
lination scale support by
first hand-tightening using the shorter end of the hexa-
gon spanner
then further tightening by 1/4 to 1/2 turn using the
spanner's longer end
Last of all, check again that all screw connections
have been done properly
and secure the cable using cable ties along the full
length of the antenna carrier so that it does not chafe
and sustain damage due to wind effects.
West
Azimuth
hand-tighten
Zenith
Elevation
East
South
Tighten fully: 1 1/2 turns
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