Installation Instructions
Type 520570
Strut Kits
for 1.2 m (4 ft) through
3.7 m (12 ft) Parabolic Antennas

Bulletin 237415


Description

The information given in this bulletin describes the kit
installation details for three types of struts: the
azimuth adjustment strut, fixed strut, and bottom strut.
The azimuth adjustment strut provides antenna
rigidity and includes a threaded rod assembly for fine
adjustment of zimuth. The fixed strut is attached to
the side of the antenna to provide greater rigidity in
high winds. The bottom strut provides additional
support in environments of heavy snow and ice.

All three struts have a strut clamp assembly that
can be clamped anywhere along the strut for
attachment to a tower member. The bottom strut
includes an angle member and U-bolt that attaches
to the antenna mounting pipe on the tower and
provides for attachment of the strut clamp assembly.

Strut Length Kit weight
Azimuth 3.2 m (10.5 ft) 17 kg (38 lbs)
Fixed 3.2 m (11 ft) 19 kg (42 lbs)
Bottom 1.5 m (5 ft) 20 kg (45 lbs)

Notice

The installation, maintenance or removal of antenna
systems requires qualified, experienced personnel.
Andrew installation instructions have been written
for such installation personnel. Antenna systems
should be inspected once a year by qualified
personnel to verify proper installation, maintenance
and condition of equipment.

Andrew disclaims any liability for the results of
improper or unsafe installation practices.


Tools

Standard hand tools can be used for this installation.
A ratchet and deep well wrench sockets are recommended.
However, combination wrenches, box or open-end
type, may be used. Wrench sizes for the furnished bolt
hardware are as follows:

Wrench size Bolt size
10mm M6
16-17 mm M10
18-19 mm M12
24 mm M16
30 mm M20

Page 1 of 4 -- Page 2 of 4