RF Exposure

FCC ID: 2ARNWOEH02

RF Exposure Info

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FCCID_4161654

RADIO FREQUENCY RADIATION EXPOSURE KDB 447498 47 CFR §§1.1307 and 2.1091 Radio frequency radiation exposure evaluation. Mobile devices that operate under CFR47 Part 90 are subject to routine environmental evaluation for RF exposure prior to equipment authorization or use if they operate at frequencies of 1.5 GHz or below and their effective radiated power (ERP) is 1.5 watts or more for FCC requirements. Prediction of MPE limit at a given distance EIRP EIRP S = re - arranged R = 4πR 2 S 4π where: S = power density R = distance to the centre of radiation of the antenna ERP = EUT Maximum power Distance (R) cm Maximum Maximum Prediction Power density required to be ERP EIRP Frequency (MHz) limit (S) (mW/cm2) less than (S) (mW) (mW) mW/cm2 910.43 5.57 5.57 0.606335647 0.855 Distance (R) cm Maximum Maximum Prediction Power density required to be ERP EIRP Frequency (MHz) limit (S) (mW/cm2) less than (S) (mW) (mW) mW/cm2 918.1 5.34 5.34 0.610941029 0.834 Result The EUT meets the limit requirements at the distances specified based on the maximum allowed ERP for a booster as per 90.219.

LIMITS FCC LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) (B) Limits for General Population/Uncontrolled Exposure Averaging Electric Magnetic Power Frequency Range Time Field (V/m Field (A/m Density (MHz) |E| , |H|2 or S 2 rms) rms) (W/m2) (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 RF Field Strength Limits for Devices Used by the General Public (Uncontrolled Environment) Frequency Electric Magnetic Power Averaging Range Field Field Density Time (MHz) (V/m rms) (A/m rms) (W/m2) (minutes) 0.003-1 280 2.19 - 6 1-10 280/ƒ 2.19/ƒ - 6 10-30 28 2.19/ƒ - 6 30-300 28 0.073 2* 6 300-1500 1.585 ƒ 0.5 0.0042 ƒ 0.5 ƒ/150 6 1500-15000 61.4 0.163 10 6 15000-150000 61.4 0.163 10 616000/ƒ 1.2 150000-300000 0.158 ƒ 0.5 4.21 x 10-4 ƒ 0.5 6.67 x 10-5 ƒ 616000/ƒ 1.2


Document Created: 2019-02-07 12:40:05
Document Modified: 2019-02-07 12:40:05
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