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HN-1010/1510
Guidelines for Avoiding Terrain Obstructions
The HopNet transceivers operate in the 2.4 GHz frequency band. While this band
offers many advantages over the VHF band for data transmission, it is also more
prone 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 most reliable 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
56
M-2410-0010 Rev A
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