Help Hot Line (U.S. only): 1-800-530-9960
5-17
D-620605-0-20 Rev A
CONFIDENTIAL
Estimating RF Coverage
For reference, Tables 5-12 through 5-16 show the distance covered by an antenna for
various in-building environments. The following assumptions were made:
• Path loss Equation (4)
• 6 dBm output per carrier at the RAU output
• 3 dBi antenna gain
• RSSI design goal = –85 dBm (typical for narrowband protocols, but not for
spread-spectrum protocols)
Table 5-12
Approximate Radiated Distance from Antenna
for 850 MHz Cellular Applications
Environment Type
Distance from Antenna
Meters
Feet
Open Environment
73
241
Moderately Open Environment
63
205
Mildly Dense Environment
55
181
Moderately Dense Environment
47
154
Dense Environment
39
129
Table 5-13
Approximate Radiated Distance from Antenna
for 900 MHz GSM Applications
Facility
Distance from Antenna
Meters
Feet
Open Environment
70
230
Moderately Open Environment
60
197
Mildly Dense Environment
53
174
Moderately Dense Environment
45
148
Dense Environment
38
125
