Thales DVOR 432, Техническое руководство

Страница: 50 / 234

DVOR 432
Installation Operation and Maintenance
2-8
Ed. 01.04
U-girder
pipes, radially arranged
Fig. 2-8 Pipes for guiding the antenna cables
2.4.2 Antenna mounting
See Figs. 2-9 to 2-13.
2.4.2.1 Lifting the Antennas onto the Counterpoise
The DVOR antennas comprising antenna dome, decoupling module and vertical pipe (installed) are
lifted with their packaging over the outer edge and onto the counterpoise. To do this the use of a lifting
crane, a trestle with swiveling armor, e.g. in the case of the 3 mhigh counterpoise, a guyed auxiliary
mast is recommended (Fig. 2-9).
2.4.2.2 Installation of the Carrier Antenna
Determine the center of the counterpoise with respect to the antenna ring of the sideband antennas.
Install the vertical pipe of the carrier antenna at this point, then align it using a spirit level (compensate
if necessary by means of washers, etc.) and secure. Mount the carrier antenna with cover on the vertiĆ
cal pipe and secure with the appropriate screws.
CAUTION
When removing the cover, always make sure that no rain can penetrate the lower section
of the antenna or come into contact with the antenna elements.
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
Gyed auxiliary mast (3 m counterpoise) Trestle with swiveling arm (3 m, 5 m, 7 m, 10 m counterpoise)
Fig. 2-9 Lifting equipment for DVOR antenna installation