CityCom
R
c) Fine adjustment
•
Loosen the screws on each side of the mast fi xing and swivel
the antenna slightly upwards and downwards, until you either
measure the strongest antenna signal on your antenna meter
or until you visualize the best image quality on your screen: to
do this, swivel the antenna upwards and then downwards until
you come to the points where the so-called "fi sh" (analogue)
or "blocks" (digital) appear on your screen. Adjust the antenna
between these two limits.
•
Alternate correcting the orientation (azimuth) and inclination
(elevation) until the measurement or image results no longer
improve.
Note:
There is a risk of the antenna twisting when the nuts
are being tightened on the clamp! You should bear
this in mind while performing fi ne adjustment (and
take advantage of this for a precise adjustment).
d) Final tightening of the antenna
•
Tighten the nuts on the bracket using your hand. Subsequently
tighten the wing nuts using an open-ended spanner (AF 10 or
13 mm) by one turn each.
•
For CCA 600/x:
Tighten the screws left and right of the bracket on the
inclination scale (torque spanner: max. 5 Nm).
•
For CCA 750/x and CCA 850/x:
Tighten both screws on each side of the mast fi xing (torque
spanner : max. 7 Nm).
•
At the end, make sure all screw fi xings are tight.
•
Insert the cables in the opening on the bottom of the boom and
fasten these so that they do not chafe and are not damaged by
wind.
West
Azimuth angle
16 / 20
Zenith
Elevation angle
East
South