User's Manual

Table Of Contents
Model 1150A DVOR
Rev. - November, 2008
This document contains proprietary information and such information may not be disclosed
to others for any purposes without written permission from SELEX Sistemi Integrati Inc.
1-15
1.2.4
Field Monitor Antenna
Refer to Figure 1-12. There are one or two field monitor antennas in each DVOR system. The single dipole antenna
is the standard configuration and two antennas are the optional configuration. A cable from the field monitor
antenna enters a two way power splitter in the VOR transmitter cabinet. The two outputs from the power splitter are
connected to the two Monitor CCAs. The antenna is installed on a support tower 300 to 360 feet from the carrier
antenna. The monitor antenna may be installed on any radial.
Figure 1-12 DVOR Field Monitor Dipole Antenna
1.2.5
Counterpoise
The counterpoise is a circular, metallic support structure upon which the transmitting antenna system is installed.
The counterpoise typically is between 60 and 100 feet in diameter, 8 to 12 feet above ground level. It can be
aluminum or galvanized steel and is assembled of segments bolted together.