RF Exposure

FCC ID: OWI-KA300

RF Exposure Info

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FCCID_2367037

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: RSZ140710003-00B

FCC §15.247 (i) & §1.1307 (b) (1) & §2.1091- MAXIMUM PERMISSIBLE
EXPOSURE (MPE)
Applicable Standard
According to subpart 15.247(i)and subpart §1.1307(b)(1), 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 Range Electric Field Magnetic Field Power Density Averaging Time
(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/4R² = 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:

Conducted Evaluation Power
Frequency Antenna Gain MPE Limit
Mode Power Distance Density
(MHz) (mW/cm2)
(dBi) (numeric) (dBm) (mW) (cm) (mW/cm2)
802.11n-
2437 4.0 2.51 26.41 437.52 20 0.219 1.0
HT40

Note: To maintain compliance with the FCC’s RF exposure guidelines, place the equipment at least 20cm
from nearby persons.

Result: Compliance

FCC Part 15.247 Page 10 of 81

Document Created: 2019-10-18 01:02:16
Document Modified: 2019-10-18 01:02:16

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