User's Manual

Appendix A. Radio Signal Propagation
User's Manual A-12 BreezeNET DS.11
Table 0.1: Signal Loss Chart
Obstruction Additional Loss
(dB)
Effective
Range
Approx. Range
Open Space 0dB 100% 1000ft. (300m)
Window (non-metallic tint) 3dB 70% 700ft. (215m)
Window (metallic tint) 5-8dB 50% 500ft. (150m)
Light Wall (dry wall) 5-8dB 50% 500ft. (150m)
Medium Wall (wood) 10dB 30% 300ft. (100m)
Heavy Wall (solid core 6”) 15-20dB 15% 150ft. (50m)
Very Heavy Wall (solid core
12”)
20-25dB 10% 100ft. (30m)
Floor/Ceiling (solid core) 15-20dB 15% 150ft. (50m)
Floor/Ceiling (heavy solid core)
20-25dB 10% 100ft. (30m)
Note:
Take stairwells and elevator shafts into consideration when positioning Access
Points. There is no way to quantify the loss associated with these obstructions,
however they do have an effect on the signal.
1.1.3. Cell Size
Cell size is determined by the maximum possible distance between the Access
Point and the Station Adapter. This distance varies according to the building floor
plan and the nature of that environment. There are several general categories:
Open Indoor Areas
Open office areas with no partitioning and no obstacles between the Access Point
and the BreezeNET workstation.