HN-291D
Guidelines for Avoiding Terrain Obstructions
Pay attention to signal attenuation from obstructions such as terrain, foliage, buildings
and anything else in the transmission path.
Use the following guidelines to avoid terrain obstructions:
•
A line-of-sight transmission path between the base and the associated remote
sites provides for the longest range transmission path.
•
A line-of-sight path can be achieved by mounting the station antenna on a
tower or elevated structure that raises it to a sufficient level to clear
surrounding terrain and other obstructions.
•
The importance of a clear transmission path relates closely to the distance to
be covered. If the system is to cover only a limited geographical area such as
1-3 miles, then some obstructions may be tolerated with minimal impact.
•
For longer-range systems, any substantial obstruction in the transmission path
could compromise the performance of the system.
©
2000- 2004 Cirronet
™
Inc
46
M-0910-0002 Rev B
