Chapter
8
Installation
of Primary Antenna Feeder System
8-7
BTS on network coverage, space diversity, azimuth angle and pitch angle, thus
ensuring desirable network coverage in future.
8.4.2 Installing Accessories of Directional Antenna
Some fasteners need be installed on a directional antenna first. For example, the
KATHREIN antenna need be installed with the fasteners “738516” and “737974”.
Before fastening the antenna, first install the fastener “737974” with angle adjustment
setting onto the top and bottom of the antenna (as shown in Fig. 8.4-1), and then
connect the fastener “737974” and the pole fastener “738516” with short bolts. During
the installation, spring washers and flat washers are used. Please refer to the guide
book delivered with the equipment for the information of specific fasteners to be used.
Assemble the fasteners and angle adjustment accessories onto the antenna in advance
before installing the antenna on the tower.
φ
75mm
738 516
737 974
0
o
~
16
o
65
o
737 974
Antenna pole
Connect them with two short bolts and nuts
Connect the antenna and the fastener with
short bolts (spring washers and flat
washers are added, and nuts are equipped
with waterproof washers)
After the connection, move the
top of the antenna up and down
to adjust the pitch angle
Scale
KATHREIN
Directional
antenna
After the connection, move the
antenna right or left to adjust the
azimuth angle
Fig. 8.4-1 Installation of the KATHREIN Antenna