Chapter 4: Legal and regulatory information
Compliance with safety standards
Table 63 Power compliance margins
Band
Antenna
Tx burst
(W)
P
(W)
G
S
(W/m
2
)
d
(m)
R
(m)
C
4.9 GHz
Integrated
0.25
0.2
158
10
0.5
2
4.0
Connectorized
0.25
0.2
398
10
0.8
5
6.25
5.4 GHz
Integrated
0.005
0.004
200
10
0.08
1
12.5
External 4ft Dish
0.00035
0.00028 2884
10
0.08
5.8 GHz
Integrated
0.5
0.41
200
10
0.79
2.5
3.2
External 2ft Flat
Plate
0.5
0.41
631
10
1.26
6.3
5.0
External 6ft Dish
0.5
0.41
6310
10
3.86
12.6
3.25
Note
Gain of antenna in dBi = 10*log(G).
The regulations require that the power used for the calculations is the maximum
power in the transmit burst subject to allowance for source-based time-averaging.
At 5.4 GHz and EU 5.8 GHz, the products are generally limited to a fixed EIRP which
can be achieved with the Integrated Antenna. The calculations above assume that the
maximum EIRP allowed by the regulations is being transmitted.
Note
If there are no EIRP limits in the country of deployment, use the distance calculations
for FCC 5.8 GHz for all frequency bands.
At FCC 5.8 GHz, for antennas between 0.6m (2ft) and 1.8m (6ft), alter the distance
proportionally to the antenna gain.
Page
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