RF Exposure

FCC ID: UJ9-2604600

RF Exposure Info

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FCCID_3011842

MRE report Applicant: I-Rocks Technology Co., Ltd Product Description: Wireless Dongle Model No.: SF-C-8510 FCC ID: UJ9-2604600 Frequency range: 2402MHz – 2480MHz According to FCC §15.247(i) and §1.1307(b)(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 level in excess of the Commission’s guidelines. Limits for General Population/Uncontrolled Exposure Frequency Range Electric Field Magnetic Field Power Density Averaging Time (MHz) Strength (V/m) Strength (A/m) (mW/cm2) (minutes) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *(100) 30 1.34-30 824/f 2.19/f *(180/f) 30 30-300 27.5 0.073 0.2 30 300-1500 / / f/1500 30 1500-100000 / / 1.0 30 f = frequency in MHz * = Plane-wave equivalent power density MPE Calculation Method The MPE was calculated at 20cm to show compliance with the power density limit. The following formula was used to calculate the Power Density: √ ∗ ∗ ! E = Power Density: Pd = "" E = Electric field (V/m) P = Peak RF output power (W) G = EUT Antenna numeric gain d = Separation distance between radiator and human body (m) The formula can be changed to 30 ∗ % ∗ & Pd = 377 ∗ () Calculated Result and Limit Maximum peak output power (dBm): 0.26 Maximum peak output power (mW): 1.062 Distance (cm): 20 Frequency (MHz): 2480 Antenna Gain (dBi): -21.64

Antenna Gain (numeric): 0.007 Power density of prediction frequency at 20 cm (mW/cm2): 0.0000015 MPE limit for uncontrolled exposure at prediction frequency (mW/cm2): 1.0 The device is compliant with the requirement MPE limit for uncontrolled exposure. The maximum power density at the distance of 20 cm is 0.0000015 mW/cm2, limit is 1.0 mW/cm2.


Document Created: 2016-05-31 10:45:57
Document Modified: 2016-05-31 10:45:57
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