RF Exposure Information

FCC ID: UU3FC302VD

RF Exposure Info

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FCCID_3092895

FCC §1.1307 & §2.1091 - MaximuM Permissible exposure (MPE)

Applicable Standard
According to subpart 15.247 (i) and subpart 1.1307 (b)(1), 2.1091 systems operating under
the provisions of this section shall be operated in a manner that ensures the public is not
exposed to RF energy level in excess of the communication guidelines.

Limits for General Population/Uncontrolled Exposure

Limits for General Population/Uncontrolled Exposure
Frequency Electric Field Magnetic Field Power Averaging
Range Strength Strength Density Time
(MHz) (V/m) (A/m) (mW/cm2) (Minutes)
0.3-1.34 614 1.63 *(100) 30
2
1.34-30 824/f 2.19/f *(180/f ) 30
30-300 27.5 0.073 0.2 30
300-1500 / / f/1500 30
1500-100,000 / / 1.0 30

f = frequency in MHz
* = Plane-wave equivalent power density

Result
Calculated Formulary:
Predication of MPE limit at a given distance

PG
S=
4R 2
S = power density (in appropriate units, e.g. mW/cm2)
P = power input to the antenna (in appropriate units, e.g., mW).
G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the
power gain factor, is normally numeric gain.
R = distance to the center of radiation of the antenna (appropriate units, e.g., cm)

For worst case:

Target Antenna Gain MPE
Target Evaluation Power
Frequency power Limit
power Distance Density
(MHz) (mW) (dBi) (numeric)
(dBm) (cm) (mW/cm2)
(mW/cm2)
136-174 37.50 5623.41 9 7.94 150 0.16 0.2

The maximum antenna gain is 9.0 dBi

Note: To maintain compliance with the FCC’s RF exposure guidelines, place the equipment
at least 150cm from nearby persons.

Result: Compliance

Document Created: 2017-12-11 23:47:49
Document Modified: 2017-12-11 23:47:49

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