MPE Report

FCC ID: NKR-ATTC71KW

RF Exposure Info

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FCCID_3607467

seomon:«s. RF Exposure Evaluation Report Report No. : FATI1514 Project No: CB10609513 RF Exposure Evaluation Report Equipment : Wireless STB Brand Name : AT&T Model No. : C71KW—400, C71KWBP—400 FCC ID : NKR—ATTC7KW Standard : 47 CFR Part 2.1091 Applicant : Wistron NeWeb Corporation 20 Park Avenue II Hsinchu Science Park Hsinchu, 308 Taiwan Manufacturer : Wistron NeWeb Corporation 20 Park Avenue II Hsinchu Science Park Hsinchu, 308 Taiwan The product sample received on Aug. 18, 2017 and completely tested on Oct. 16, 2017. We, SPORTON, would like to declare that the tested sample has been evaluated in accordance with 47 CFR Part 2.1091 and pass the limit. Without written approval of SPORTON INTERNATIONAL INC., the test report shall not be reproduced except in full. selt «t 1 Y Cliff Chang ym "hihage® y tss 1190 SPORTON INTERNATIONAL inc. SPORTON INTERNATIONAL INC Page No. : 1 of6 TEL: 886—3—327—3456 Report Version : Rev. 01 FAX : 886—3—327—0073 Issued Date : Oct. 16, 2017 FCC ID: NKR—ATTC71KW

RF Exposure Evaluation Report Report No. : FA791514 TABLE OF CONTENTS 1 GENERAL DESCRIPTION ....................................................................................................................4 1.1 EUT General Information .......................................................................................................................4 1.2 Table for Multiple Listing ........................................................................................................................4 1.3 Testing Location .....................................................................................................................................4 2 MAXIMUM PERMISSIBLE EXPOSURE ...............................................................................................5 2.1 Limit of Maximum Permissible Exposure ...............................................................................................5 2.2 MPE Calculation Method........................................................................................................................5 2.3 Calculated Result and Limit....................................................................................................................6 PHOTOGRAPHS OF EUT V01 SPORTON INTERNATIONAL INC. Page No. : 2 of 6 TEL : 886-3-327-3456 Report Version : Rev. 01 FAX : 886-3-327-0973 Issued Date : Oct. 16, 2017 FCC ID: NKR-ATTC71KW

RF Exposure Evaluation Report Report No. : FA791514 REVISION HISTORY REPORT NO. VERSION DESCRIPTION ISSUED DATE FA791514 Rev. 01 Initial issue of report Oct. 16, 2017 SPORTON INTERNATIONAL INC. Page No. : 3 of 6 TEL : 886-3-327-3456 Report Version : Rev. 01 FAX : 886-3-327-0973 Issued Date : Oct. 16, 2017 FCC ID: NKR-ATTC71KW

RF Exposure Evaluation Report Report No. : FA791514 1 General Description 1.1 EUT General Information RF General Information Frequency Operating Evaluation Range Frequency Modulation Type Mode (MHz) (MHz) 802.11b: DSSS (DBPSK, DQPSK, CCK) 802.11g/n: OFDM (BPSK, QPSK, 16QAM, 64QAM) 2.4GHz WLAN 2400-2483.5 2412-2462 802.11ac: OFDM (BPSK, QPSK, 16QAM, 64QAM, 256QAM 5150-5250 5180-5240 802.11a/n: OFDM (BPSK, QPSK, 16QAM, 64QAM) 5250-5350 5260-5320 802.11ac: OFDM (BPSK, QPSK, 16QAM, 64QAM, 5GHz WLAN 5470-5725 5500-5720 256QAM 5725-5850 5745-5825 BR / EDR: FHSS (GFSK / π/4-DQPSK / 8DPSK) Bluetooth 2400-2483.5 2402-2480 LE: DSSS (GFSK) 1.2 Table for Multiple Listing The model names in the following table are all refer to the identical product. Brand Name Model Name Description C71KW-400 AT&T There is nothing different of two models, just for different marketing use. C71KWBP-400 From the above models, model: C71KW-400 was selected as representative model for the test and its data was recorded in this report. 1.3 Testing Location Testing Location HWA YA ADD : No. 52, Hwa Ya 1st Rd., Kwei-Shan Hsiang, Tao Yuan Hsien, Taiwan, R.O.C. TEL : 886-3-327-3456 FAX : 886-3-327-0973 JHUBEI ADD : No.8, Lane 724, Bo-ai St., Jhubei City, HsinChu County 302, Taiwan, R.O.C. TEL : 886-3-656-9065 FAX : 886-3-656-9085 SPORTON INTERNATIONAL INC. Page No. : 4 of 6 TEL : 886-3-327-3456 Report Version : Rev. 01 FAX : 886-3-327-0973 Issued Date : Oct. 16, 2017 FCC ID: NKR-ATTC71KW

RF Exposure Evaluation Report Report No. : FA791514 2 Maximum Permissible Exposure 2.1 Limit of Maximum Permissible Exposure (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 2.2 MPE Calculation Method The MPE was calculated at 20 cm to show compliance with the power density limit. The following formula was used to calculate the Power Density: 30  P  G E2 E (V/m) ＝ Power Density: Pd (W/m²) ＝ d 377 E ＝ Electric field (V/m) P ＝ 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 Pd ＝ 30  P  G 377  d 2 SPORTON INTERNATIONAL INC. Page No. : 5 of 6 TEL : 886-3-327-3456 Report Version : Rev. 01 FAX : 886-3-327-0973 Issued Date : Oct. 16, 2017 FCC ID: NKR-ATTC71KW

RF Exposure Evaluation Report Report No. : FA791514 2.3 Calculated Result and Limit Exposure Environment: General Population / Uncontrolled Exposure DG Power EIRP EIRP Distance S S Limit Mode 2 2 (dBi) (dBm) (dBm) (W) (cm) (mW/cm ) (mW/cm ) 2.4G;D1D 6.30 29.69 35.99 3.97192 20 0.79019 1.00000 5.2G;D1D 7.60 27.80 35.40 3.46737 20 0.68981 1.00000 5.3G;D1D 7.50 22.00 29.50 0.89125 20 0.17731 1.00000 5.6G;D1D 7.00 22.92 29.92 0.98175 20 0.19531 1.00000 5.8G;D1D 7.10 27.91 35.01 3.16957 20 0.63057 1.00000 2.4G;BT-BR 1.11 10.98 12.09 0.01618 20 0.00322 1.00000 Simultaneous Transmission Analysis Mode: WLAN 2.4GHz+ Bluetooth DG Power EIRP EIRP Distance S S Limit Ratio Mode 2 2 (dBi) (dBm) (dBm) (W) (cm) (mW/cm ) (mW/cm ) (S/Limit) 2.4G;D1D 6.30 29.69 35.99 3.97192 20 0.79019 1.00000 0.79019 2.4G;BT-BR 1.11 10.98 12.09 0.01618 20 0.00322 1.00000 0.00322 Sum Ratio 0.79341 Ratio Limit 1 Simultaneous Transmission Analysis Mode: WLAN 5GHz+ Bluetooth DG Power EIRP EIRP Distance S S Limit Ratio Mode 2 2 (dBi) (dBm) (dBm) (W) (cm) (mW/cm ) (mW/cm ) (S/Limit) 5.2G;D1D 7.60 27.80 35.40 3.46737 20 0.68981 1.00000 0.68981 2.4G;BT-BR 1.11 10.98 12.09 0.01618 20 0.00322 1.00000 0.00322 Sum Ratio 0.69303 Ratio Limit 1 SPORTON INTERNATIONAL INC. Page No. : 6 of 6 TEL : 886-3-327-3456 Report Version : Rev. 01 FAX : 886-3-327-0973 Issued Date : Oct. 16, 2017 FCC ID: NKR-ATTC71KW


Document Created: 2017-10-16 18:37:55
Document Modified: 2017-10-16 18:37:55
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