RF Exposure

FCC ID: SS3-AG4051701

RF Exposure Info

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FCCID_3311079

Bay Area Compliance Laboratories Corp. (Chengdu)

FCC §15.247 (i) & §1.1307 & §2.1091- MAXIMUM PERMISSIBLE
EXPOSURE (MPE)
Applicable Standard
According to subpart 15.247(i) and subpart §1.1307, systems operating under the provisions of
this section shall be operated in a manner that ensures that the public is not exposed to radio
frequency energy level in excess of the Commission’s guidelines.

Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091)

(B) Limits for General Population/Uncontrolled Exposure

Frequency Electric Field Magnetic Field Power Density Averaging Time
Range (MHz) Strength (V/m) Strength (A/m) (mW/cm2) (minutes)

0.3–1.34 614 1.63 *(100) 30
1.34–30 824/f 2.19/f *(180/f²) 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;

According to §1.1310 and §2.1091 RF exposure is calculated.

Calculated Formulary:

Predication of MPE limit at a given distance
S = PG/4πR² = 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);

Calculated Data:

Maximum
Power Evaluation Power MPE
Frequency Antenna Gain
including Distance Density Limit
(MHz) tolerance (cm) (mW/cm2) (mW/cm2)
(dBi) (numeric) (dBm) (mW)
2408-
3.5 2.24 19 79.43 20.00 0.0354 1.0
2475.5

Note: The tune-up power including tolerance is declared by manufacturer.

Result: The device meet FCC MPE at 20 cm distance

Report No.: RDG170108002A Page 9 of 36

Document Created: 2017-12-25 12:25:14
Document Modified: 2017-12-25 12:25:14

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