Installation guide

Installing the Link Tsunami MP.11 Antenna Installation Guide
Determining Optimal Antenna Placement
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To minimize the influence of obstacles, signal interference, or reflections, note the following guidelines:
• Mount the antenna as high as possible above the ground to allow maximum clearance:
– In open areas, ground is the actual surface of the earth.
– In dense urban areas, ground is to be interpreted as the height of the highest obstacle in the signal path between
the two antenna sites.
• Avoid trees in the signal path to avoid signal absorption due to seasonal changes (leaves or ice).
• Install the antenna at least 2 m (6 ft.) away from all other antennas.
Other situations in which reflections of the radio signal may cause interference are environments in which large reflecting
surfaces exist in parallel or partly perpendicular to the antenna beam.
Environments with large reflective surfaces include:
• Mirror-glass buildings
• Crowded parking lots
• Water surface or moist earth and moist vegetation
• Above ground power and telephone lines
NOTE: The use of reflective surfaces can be used to improve a link, especially if the direct line-of-sight is impaired or
absent.
Weather conditions such as rain or snow usually do not have much impact on the performance of your Proxim product,
provided you have sealed all cable connectors with weatherproofing tape.
Seasonal influence on signal propagation can occur in the following situations:
• A marginal communications quality in late fall (with no leaves on the trees in the signal path) might fail in the summer
when leaves are present.
• In winter, a wireless link can fail when the antenna is exposed to ice buildup or when the antenna elements are
covered with snow.
Radio paths over water or extremely flat ground may require optimization of antenna height at one end. This is due to
in-phase or out-of-phase reflections. Adjustment of antenna height by 1 to 3 meters may move the signal from a null to a
peak.