Proxim TSUNAMI CPN 65756B User Manual

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Tsunami MP.11a Antenna Installation Guide
 
If any significant part of this zone is obstructed, a portion of the radio energy will be lost, resulting in reduced 
performance.  Reduced performance can also occur when obstacles close to the antenna beam cause signal 
reflections or noise that interfere with the radio signal. 
The following figure shows some typical examples of obstacles that you must avoid for the directional 
antenna to operate effectively: 
▪ 
Neighboring buildings 
▪ 
Trees or other obstructions 
▪ 
Power lines 
To allow optimal performance you must ensure that the type and placement of the antennas leave sufficient 
clearance of the Fresnel Zone at the maximum width of the bulge, which is typically at the mid-point between 
the antennas. 
 
Figure 4.  Potential Obstacles for a Directional Antenna 
Chapter 1.  Preparing for Installation 
13
 
CPN 65756B 
Issue Date:  August 2003