analysis report

FCC ID: PKG18777RC

RF Exposure Info

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                     INTERTEK TESTING SERVICES

                                  RF Exposure
The equipment under test (EUT) is an R/C Rock Crawler Pro Series 4WS
operating at 2.4G Band. The EUT can be powered by DC3.0V (2 x 1.5V AA
batteries). For more detail information pls. refer to the user manual.

Antenna Type: Integral antenna.
Antenna Gain: 0dBi.
The normal radiated output power (e.i.r.p) is: -5.0dBm (tolerance: +/- 3dB).
The normal conducted output power is -5.0dBm (tolerance: +/- 3dB).
Modulation Type: GFSK.

According to the KDB 447498:
    The Maximum peak radiated emission for the EUT is 91.2dBμV/m at 3m in
    the frequency 2470MHz
    The EIRP = [(FS*D) ^2 / 30] mW = -4.03dBm
    which is within the production variation.

    The Minimum peak radiated emission for the EUT is 89.0dBμV/m at 3m in
    the frequency 2426MHz
    The EIRP = [(FS*D) ^2 / 30] mW = -6.23dBm
    which is within the production variation.

     The maximum conducted output power specified is -2.0dBm =0.63mW
     The source- based time-averaging conducted output power
     =0.63* Duty cycle mW <0.63 mW(Duty cycle <100%)

     The SAR Exclusion Threshold Level:
     = 3.0 * (min. test separation distance, mm) / sqrt(freq. in GHz)
     = 3.0 * 5 / sqrt (2.470) mW
     = 9.54 mW

     Since the source-based time-averaging conducted output power is well
     below the SAR low threshold level, so the EUT is considered to comply
     with SAR requirement without testing.

The duty cycle is simply the on-time divided by the period:
      The duration of one cycle = 10.0ms
      Effective period of the cycle = 391.3μs x 2=0.7826ms=
      DC =0.7826ms / 10.0ms            =0.0783 or 7.83%

FCC ID: PKG18777RC

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Document Created: 2019-03-01 14:26:43
Document Modified: 2019-03-01 14:26:43

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