RF Exposure

FCC ID: TV7LTAP2HND

RF Exposure Info

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FCCID_4173802

Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RKSA180929001-00B

FCC §1.1310 & §2.1091 –MAXIMUM PERMISSIBLE EXPOSURE (MPE)
Applicable Standard

According to subpart §2.1091 and subpart §1.1310, 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/4ʌR² = 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:

For worst case:

Tune-up
Frequency Antenna Gain Conducted Evaluation Power
MPE Limit
Mode Range Power Distance Density
(mW/cm2)
(MHz) (cm) (mW/cm2)
(dBi) (numeric) (dBm) (mW)
802.11b 2.50 1.78 19.00 79.43 20 0.0281 1.00
802.11g 2412~2462 2.50 1.78 18.00 63.10 20 0.0223 1.00
802.11
2.50 1.78 20.00 100.00 20 0.0354 1.00
n-HT20
802.11
2422~2452 2.50 1.78 20.00 100.00 20 0.0354 1.00
n-HT40

Result: The device meet FCC MPE at 20 cm distance.

FCC Part 15.247 Page 16 of 113

Document Created: 2019-02-20 11:43:41
Document Modified: 2019-02-20 11:43:41

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