RF Exposure

FCC ID: IYL4062-RF1

RF Exposure Info

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FCCID_1121507

MAXIMUM PERMISSIBLE EXPOSURE CALCULATIONS

Test Procedure for Maximum Permissable Exposure: Using the power measurements previously
reported in this report, the power density at a distance of 20 cm from the EUT must be calculated.

The power density at a distance d from an antenna can be calculated from the following equation:

Pinc G
s=
4πd 2

where Pinc is the power incident to the antenna and G is the gain of the antenna. From the conducted
power measurements previously reported, the maximum for all modes of operation is 29.79 dBm
(952.8 mW). Given the gain of the antenna to be -9.6 dBi (0.331), the power density at a distance of
20 cm from the EUT is given by:

(952.8mW )(0.331) 0.0627 mW
s= =
4π (20cm) 2 cm 2

It is expected that due to the nature of the EUT, the user will be located at least 20 cm from the EUT.

Criteria for Maximum Permissable Exposure: Per §1.1310 of the FCC Rules, the limit of
radiation exposure for a device operating in the frequency range of 902 - 928 MHz under the Limits
for General Population/Uncontrolled Exposure, the maximum power density is 0.61 mW/cm2. The
EUT was well below this value for separation distances of 20 cm or greater.

Document Created: 2019-09-07 20:56:55
Document Modified: 2019-09-07 20:56:55

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