Analysis Report

FCC ID: ZNK3083A

RF Exposure Info

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FCCID_4340451

Analysis Report The Equipment Under Test (EUT), is a portable 2.4GHz Transceiver (Car Unit) for a RC car. The operation frequency range is between 2405MHz and 2473MHz with following 8 channels used. Channel Frequency (MHz) 0 2405 1 2415 2 2427 3 2437 4 2440 5 2445 6 2450 7 2473 The EUT is powered by ni-cd AA 700mAh 6V batteries. After switching on the EUT, the car will be moved forward or backward and turned left and right based on the switches pressed in the controller. Antenna Type: Internal integral antenna Antenna Gain: 0dBi Nominal rated field strength: 97.3dBμV/m at 3m Maximum allowed field strength of production tolerance: +/- 3dB According to the KDB 447498: Based on the Maximum allowed field strength of production tolerance was 100.3dBμV/m at 3m. Thus, it below calculated field strength according to minimum SAR exclusion threshold level as follows: The worst case of SAR Exclusion Threshold Level: = 3.0 * (min. test separation distance, mm) / sqrt(freq. in GHz) = 3.0 * 5 / sqrt (2.483.5) mW = 9.52 mW According to the KDB 412172 D01: EIRP = [(FS*D) ^2*1000 / 30] Calculated Field Strength for 9.52mW is 105dBuV/m @3m

Since maximum field strength plus production tolerance < = 105dBuV/m @3m and antenna gain is > = 0.0dBi, it is concluded that maximum Conducted Power and Field Strength are well below the SAR Exclusion threshold level, so the EUT is considered to comply with SAR requirement without testing.


Document Created: 2019-06-24 10:47:10
Document Modified: 2019-06-24 10:47:10
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