RF exposure info

FCC ID: NKR-DNUAE134A

RF Exposure Info

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FCCID_1983287

Report No.: FR341911 Appendix B. Maximum Permissible Exposure FCC ID: NKR-DNUAE134A Page No. : B1 of B3

Report No.: FR341911 1. Maximum Permissible Exposure 1.1. Applicable Standard 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 limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile device whereby a distance of 0.2 m normally can be maintained between the user and the device. (A) Limits for Occupational / Controlled Exposure Averaging Time Frequency Range Electric Field Magnetic Field Power Density (S) |E|²,|H|² or S (MHz) Strength (E) (V/m) Strength (H) (A/m) (mW/ cm²) (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 (B) Limits for General Population / Uncontrolled Exposure Averaging Time Frequency Range Electric Field Magnetic Field Power Density (S) |E|²,|H|² or S (MHz) Strength (E) (V/m) Strength (H) (A/m) (mW/ cm²) (minutes) 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 1500-100,000 1.0 30 Note: f = frequency in MHz ; *Plane-wave equivalent power density 1.2. MPE Calculation Method 30  P  G E2 E (V/m) ＝ Power Density: Pd (W/m²) ＝ d 377 E ＝ Electric field (V/m) P ＝ Average RF output power (W) G ＝ EUT Antenna numeric gain (numeric) d ＝ Separation distance between radiator and human body (m) The formula can be changed to 30  P  G Pd ＝ 377  d 2 From the EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained. FCC ID: NKR-DNUAE134A Page No. : B2 of B3

Report No.: FR341911 1.3. Calculated Result and Limit For 5GHz UNII Band: Antenna Type : PIFA Antenna Max Conducted Power for IEEE 802.11a : 21.61dBm Average Average Power Density Limit of Power Antenna Antenna Gain Output Power Output Power (S) Density (S) Test Result Gain (dBi) (numeric) (dBm) (mW) (mW/cm²) (mW/cm²) 5.65 3.6728 21.6050 144.7105 0.105791 1 Complies For 5GHz ISM Band: Antenna Type : PIFA Antenna Max Conducted Power for IEEE 802.11n MCS0 20MHz : 22.11dBm Average Average Power Density Limit of Power Antenna Antenna Gain Output Power Output Power (S) Density (S) Test Result Gain (dBi) (numeric) (dBm) (mW) (mW/cm²) (mW/cm²) 5.65 3.6728 22.1078 162.4721 0.118776 1 Complies For 2.4GHz Band: Antenna Type : PIFA Antenna Max Conducted Power for IEEE 802.11g : 24.91 dBm Average Average Power Density Limit of Power Antenna Antenna Gain Output Power Output Power (S) Density (S) Test Result Gain (dBi) (numeric) (dBm) (mW) (mW/cm²) (mW/cm²) 4.05 2.5410 24.9073 309.5497 0.156560 1 Complies FCC ID: NKR-DNUAE134A Page No. : B3 of B3


Document Created: 2019-09-16 22:40:13
Document Modified: 2019-09-16 22:40:13
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