User's Manual
6-Jul-2004
Page 1 of 1
Radio Frequency Radiation Exposure Evaluation
for GigAccess Self Install GA_900_RSU
1. RF Hazard Distance Calculation
Limit for power density for general population /uncontrolled exposure is
0.604 mW/cm² (for 902MHz)
The Power density is given by:
P (mW/cm²)= PT /4π R²
Therefore:
R = Distance to the center of radiation antenna [cm]
(3)
mWdBm
PP log10×=
Therefore: (4
10
10
dBm
P
mW
P =
The hazard distances versus antenna gain are listed in Table 1-1.
Note! GigAccess™ 900 was designed for fixed and mobile applications.
point-to-multi-point operation
Antenna Gain Tx Power Safe Distance Sector Type
[dBi] [Numeric] [dBm] [mW] [cm]
6 3.98 30 1000
22.6
p2mp
Table 1-1: Hazard Distance versus Antenna Gain for Point to Multi Point
When using the system for point to multi point (p2mp) applications all outdoor units must be
installed with a separation distance of at least 30 cm
from all persons during normal operation.