Analysis Report

FCC ID: ZNK3081A

RF Exposure Info

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FCCID_4311552

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 4 x 1.5V AA 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: 91.8dBμV/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 94.8dBμV/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: 2019-06-03 16:44:15
Document Modified: 2019-06-03 16:44:15
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