RT-500-M
RHOTHETA
Page 153 of 168
User Manual
8.8 Guideline for Optimal DF Antenna Position
The quality of the bearing results depends largely on the antenna´s location. So, an antenna location
has to be found where the transmitter´s wavefield can reach the bearing antenna as undisturbed as
possible.
If high bearing accuracy is demanded, no metallic resp. RF-conducting obstacles may be around the
antenna unit (in an angle of ± 45° towards the horizontal).
Objects being in the “restricted area” will disturb the arriving wave field. Reflections will arise which
might disturb bearing accuracy and so on decrease the bearing accuracy. This physical effect
generally is valid for all bearing systems. In practice, often a compromise has to be found between
bearing and other interests.
Figure 190. "Example of Optimal DF Antenna Position"