Thales DVOR 432, Technical Manual

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DVOR 432
Operation and Maintenance Installation
2-7
Ed. 01.04
2.4 INSTALLATION OF THE DVOR ANTENNAS
2.4.1 General
This chapter describes the installation and adjustment of the DVOR antennas. The installation of the
counterpoise with associated supports and framework, and the framework decking are normally part
of the civil works section and not included in this description. The counterpoise foundation drawing
in section 2.2 is shown for information only.
WARNING
Sturdy shoes, safety gloves and safety helmets must be worn during installation. Safety
belts with rescue line and swivel snaphook should be used when working on the counterĆ
poise platform.
2.4.1.1 Prerequisites
- Counterpoise
The counterpoise for the DVOR antenna has been completely assembled according to the drawĆ
ings set included with the counterpoise material.
- Support for carrier antenna (counterpoise center)
The support for mounting the middle antenna has been installed in the center of the counterpoise.
Permissible deviation from the center: ±150 mm.
- Antenna ring (Fig. 2-7)
The antenna ring has been installed on the counterpoise. The radius measured at the inner ring
is 6623 mm.
- Cable run (Fig. 2-8)
16 plastic or steel pipes have been installed on the lower side of the counterpoise for the cable runs
fromthe sideband antennas to the center of the counterpoise. A further pipe is used in addition
if the antenna of a collocated DME is to be installed.
1 Outer ring
2 Inner ring
1
2
r = 6623
Fig. 2-7 Antenna ring