18_UA23 RFExp

FCC ID: ZKWUA231905001

RF Exposure Info

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FCCID_4328757

Dongguan Nore Testing Center Co., Ltd. Report No.: NTC1905279F-1 FCC ID: ZKWUA231905001 RF EXPOSURE EVALUATION EUT Specification EUT 2.4G WIFI FPV DRONE Frequency band WLAN: 2.412GHz ~ 2.462GHz (Operating) WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz WLAN: 5.745GHz ~ 5825GHz Others(2425~2470MHz) Device category Portable (<20cm separation) Mobile (>20cm separation) Others ___ Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Max. output power 102.57dBuV/m (7.31dBm)(5.38mW) Antenna gain 0dBi Evaluation applied SAR Exclusion Evaluation Standard Requirement Portable Device According to §15.247(i) and §1.1307b(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 levels in excess of the Commission’s guidelines. See KDB 447498 D01 General RF Exposure Guidance v05, section 4.3.1. The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR,16 where ·f(GHz) is the RF channel transmit frequency in GHz ·Power and distance are rounded to the nearest mW and mm before calculation17 ·The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion.

Dongguan Nore Testing Center Co., Ltd. Report No.: NTC1905279F-1 FCC ID: ZKWUA231905001 Measurement Result Channel Max Output Max Output Max Output Calculati Threshold Frequency power power (dBm) power (mW) on Value Value (Note 1) (MHz) (dBuV/m) 2425 102.36 7.10 5.13 1.597 3.0 2454 102.00 6.74 4.72 1.479 3.0 2470 102.57 7.31 5.38 1.692 3.0 EIRP= E-104.8+20logD=102.57-104.8+20log3=7.31dBm Note 1: Calculation Value =[(max. power of channel, mW)/(min. test separation distance, mm)] ·[√f(GHz)]. Fox example:5.38/5*√2.47=1.692 ≤ 3.0 According to KDB447498 D01 V06, threshold at which no SAR required is ≤3.0 for 1-g SAR, separation distance is 5mm, and no simultaneous SAR measurement is required.


Document Created: 2019-06-19 12:27:08
Document Modified: 2019-06-19 12:27:08
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