2AR82-SKIWB668BU2IEEE 802.11b/g/n/a/ac 2T2R USB WiFi Module Integrated BT 2.1+EDR/4.2/5.0

SKI.WB638BU.2_668BU IEEE 802.11b/g/n/a/ac 2T2R USB WiFi Module Integrated BT 2.1/3.0/4.2 Approved by Shikun Checked by 审核 Rechecked by 复审 Approved by 批准 Please send the original back to us after you have approved and signed. 客户承认签章后敬请寄回正本一份。 Approved by customer Comments 确认意见 Approved by 批准签字 Company’s seal 盖章 Customer’s Name: 广 州 视 琨 电 子 科 技 有 限 公 司 Guangzhou Shikun Electronic Technology Company Limited REVISION HISTORY VERSION DATE BOARD ID PAGE DESCRIPTION AUTHOR V0 2020.01.06 SKO.WB638U.1_668BU A19451 All First Issued Sannis SKI.WB638BU.2_668BU 1 QR-ZZPJ-017A Content 1. Introduction（简介） ............................................................................................................ 2 2. Features（特性） ................................................................................................................... 2 3. Block Diagram（结构框图） ............................................................................................... 3 4. Package Outline and Mounting（外形及安装尺寸） .................................................... 3 5. Pin Definition（引脚定义） .................................................................................................. 4 6. Product Pictures（实物图片） ............................................................................................ 4 7. Key Materials（关键物料）.................................................................................................. 5 8. General Requirements（一般要求） ................................................................................ 6 9. Electrical Characteristics（电气特性）............................................................................ 6 9.1 IEEE 802.11b Section .............................................................................................. 6 9.2 IEEE 802.11g Section .............................................................................................. 7 9.3 IEEE 802.11n HT20 Section .................................................................................. 8 9.4 IEEE 802.11n HT40 Section .................................................................................. 9 9.5 IEEE 802.11a Section ............................................................................................ 10 9.6 IEEE 802.11n HT20 Section(5GHz) .................................................................. 11 9.7 IEEE 802.11n HT40 Section(5GHz) .................................................................. 12 9.8 IEEE 802.11ac Section(5GHz) ............................................................................ 13 9.9 Bluetooth Section .................................................................................................... 14 10. Mechanical,Environmental and Reliability Tests（机械、环境和可靠性测试）15 11. Package（包装） ............................................................................................................... 17 12. Software Requirements（软件要求） ......................................................................... 17 SKI.WB638BU.2_668BU 2 QR-ZZPJ-017A 1. Introduction（简介） SKI.WB638BU.2_668BU module is based on MediaTek MT7668BUN solution. MT7668BUN is a highly integrated single chip which features a low power 2x2 802.11b/g/n Wi-Fi subsystem and a Bluetooth subsystem. The Wi-Fi subsystem contains the 802.11 a/b/g/n/ac radio, baseband, and MAC that are designed to meet both the low power and high throughput application. The Bluetooth subsystem contains the Bluetooth radio which complies with Bluetooth v2.1+EDR, v4.2, and v5.0, baseband, link controller. This documentation describes the engineering requirements specification. SKI.WB638BU.2_668BU 模块基于 MEDIATEK MT7668BUN 解决方案。 MT7668BUN 是一款高度集成的芯片， 具有低功耗 2x2 802.11 a/b/g/n/ac Wi-Fi 子系统和蓝牙子系统。 Wi-Fi 子系统包含 802.11b/g/n 射频、 基带和 MAC， 旨在满足低功耗和高吞吐量应用。蓝牙子 系统包含蓝牙 2.1+EDR、v4.2 和 v5.0、基带和链路控制器。本文件描述了工程需求规范。 2. Features（特性） Reserving System 接收制式 IEEE Std. 802.11a IEEE Std. 802.11b IEEE Std. 802.11g IEEE Std. 802.11n IEEE Std. 802.11ac BT 2.1+EDR BT 4.2 BT 5.0 Chip Solution 芯片方案 MT7668BUN Band 波段 2.4GHz/5GHz Dimensions 尺寸 23mm×21.5mm×3mm Model 型号 Installation Mode 安装方式 Protocol l 支持标准 Frequency 频段 Antenna 天线 Remark 备注 SKI.WB638BU.2 _668BU SMD IEEE 802.11a/b/g/n/ac BT2.1/4.2/5.0 2.4GHz/5GHz IPEX 23mm×21.5mm×3mm SKI.WB638BU.2_668BU 3 QR-ZZPJ-017A 4. Package Outline and Mounting（外形及安装尺寸） SKI.WB638BU.2_668BU 4 QR-ZZPJ-017A Pin Definition（引脚定义） TOP VIEW PIN SYMBOL DESCRIPTION 1 3.3V 3.3V 供电 2 3.3V 3.3V 供电 3 DM USB_DM 4 DP USB_DP 6 RESET 内部有 10K 上拉电阻，低电平有效 7 WL_HOST_WAKE 内部有 10K 上拉电阻，低电平有效 9 BT_HOSTWAKE 内部有 10K 上拉电阻，低电平有效 5,8,10,11,12,13,14 GND GND 5. Product Pictures（实物图片） 正视图（top view） SKI.WB638BU.2_668BU 5 QR-ZZPJ-017A 背视图（bottom view） 标签信息（information view） 6. Key Materials（关键物料） No. 序号 Name 关键件名称 Model 型号 Specification 规格/材料 Remark 备注 1 集成电路 MT7668BUN 76-QFN 2 PCB SKI.WB638BU.2_668BU FR-4,4LAY 3 晶体振荡器 CF4040M00015T2115142 40MHz SKI.WB638BU.2_668BU 6 QR-ZZPJ-017A 7. General Requirements（一般要求） No. Feature Description 8-1 Operation Voltage 工作电压范围 3.3V+/-0.3 8-2 Current Consumption 最大电流 700mA 8-3 Ripple 纹波 ≤100mV 8-4 Operation Temperature 工作温度范围 0°C to +40°C 8-5 Antenna Type 天线类型 External antenna 8-6 USB High Speed USB 2.0 Interface 8-7 Storage Temperature 存储温度 -40°C to +125°C 8. Electrical Characteristics（电气特性） 除非另有说明，电气规范试验都在下列条件下进行: 环境条件温度：25°C±5°C； 电源电压：模块输上入电压 3.3V（±10%）； The Test for electrical specification was performed under the following condition unless otherwise specified： Ambient condition Temperature :25°C ± 5°C; Power supply voltages：3.3V (±10%) input power at the Module; 8.1 IEEE 802.11b Section Items Contents Specification IEEE802.11b Mode CCK Channel CH1 to CH13 Data rate 1, 2, 5.5, 11Mbps TX Characteristics Min. Typ. Max. Unit Remark 1. Power Levels(Calibrated) 1) For antenna port 15 17 19 dBm 2. Spectrum Mask @ target power 1) fc +/-11MHz to +/-22MHz - - -30 dBr 2) fc > +/-22MHz - - -50 dBr 3 Constellation Error(EVM)@ target power 1) 1Mbps - - -10 dB 2) 2Mbps - - -10 dB 3) 5.5Mbps - - -10 dB 4) 11Mbps - - …

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FCC Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Caution: The user is cautioned that changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: —Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver. —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. —Consult the dealer or an experienced radio/TV technician for help. FCC RF Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and any part of your body. The device must be professionally installed The intended use is generally not for the general public.It is generally for industry/commercial use. The connector is within the transmitter enclosure and can only be accessed by disassembly of the transmitter that is not normally required. the user has no access to the connector. Installation must be controlled. Installation requires special training This module has been assessed against the following FCC rule parts: CFR 47 FCC Part 15 C (15.247, DTS and DSS) and CFR 47 FCC Part 15 E (NII). It is applicable to the modular transmitter This radio transmitter 2AR82-SKIWB668BU2has been approved by Federal Communications Commission to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device. The concrete contents to check are the following three points. １) Must use following one of the three antenna. ２) Should be installed so that the end user cannot modify the antenna; ３) Feed line should be designed in 50ohm Fine tuning of return loss etc. can be performed using a matching network. Antenna Frequency (MHz) Antenna Type MAX Antenna Gain (dBi) BT 2402-2480 PCB Antenna 3.94 Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) 1(WIFI0) 2412-2462 PCB Antenna 3.70 2(WIFI1) 2412-2462 PCB Antenna 4.94 Antenna No. Frequency Band Antenna Type Max Antenna Gain (dBi) 1(WIFI0) UNII1 PIFA 2.87 2(WIFI1) UNII1 PIFA 2.53 1(WIFI0) UNII-2A PIFA 3.45 2(WIFI1) UNII-2A PIFA 2.75 1(WIFI0) UNII-2C PIFA 5.45 2(WIFI1) UNII-2C PIFA 4.88 1(WIFI0) UNII3 PIFA 5.2 2(WIFI1) UNII3 PIFA 4.53 Canada Statement This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device. L'émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d'Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : 1)L'appareil ne doit pas produire de brouillage; 2)L'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. The device for operation in the band 5150–5250 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems Les dispositifs fonctionnant dans la bande de 5 150 à 5 250 MHz sont réservés uniquement pour une utilisation à l’intérieur afin de réduire les risques de brouillage préjudiciable aux systèmes de satellites mobiles utilisant les mêmes canaux. Please notice that if the ISED certification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains IC: 24728-SKIWB668BU2” any similar wording that expresses the same meaning may be used. l'appareil hôte doit porter une étiquette donnant le numéro de certification du module d'Industrie Canada, précé dé des mots « Contient un module d'émission », du mot « IC: 24728-SKIWB668BU2 » ou d'une formulation similaire exprimant le même sens, comme suit The device meets the exemption from the routine evaluation limits in section 2.5 of RSS 102 and compliance with RSS-102 RF exposure, users can obtain Canadian information on RF exposure and compliance. Le dispositif rencontre l'exemption des limites courantes d'évaluation dans la section 2.5 de RSS 102 etla conformité à l'exposition de RSS-102 rf, utilisateurs peut obtenir l'information canadienne surl'exposition et la conformité de rf. This transmitter must not be co-located or operating in conjunction with any other antenna or trans…

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Appendix I External Photographs Page 2 of 4 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. . View of EUT-1 View of EUT-2 BT ANTENNA WIFI ANTENNA 2 WIFI ANTENNA 1 Page 3 of 4 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. . View of EUT-3 View of EUT-4 Page 4 of 4 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. . Detail View of Antenna WIFI ANTENNA 1 WIFI ANTENNA 2 BT ANTENNA

Appendix II Internal Photographs Page 2 of 2 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. . Open View of EUT Internal View of EUT-1

The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. This report does not imply that the product(s) has met the criteria for certification. FCC RF EXPOSURE REPORT For IEEE 802.11b/g/n/a/ac 2T2R USB WiFi Module Integrated BT 2.1+EDR/4.2/5.0 MODEL NUMBER: SKI.WB638BU.2_668BU FCC ID: 2AR82-SKIWB668BU2 REPORT NUMBER: 4789476783-5 ISSUE DATE: June 2, 2020 Prepared for Guangzhou Shikun Electronics Co., Ltd NO.6 Liankun Road,Huangpu District,Guangzhou,China Prepared by UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch Building 10, Innovation Technology Park, No. 1, Li Bin Road, Song Shan Lake Hi-Tech Development Zone, Dongguan, People’s Republic of China Tel: +86 769-22038881 Fax: +86 769 33244054 Website: www.ul.com REPORT No.: 4789476783-5 Page 2 of 6 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS .................................................................................... 3 2. TEST METHODOLOGY ........................................................................................................ 3 3. FACILITIES AND ACCREDITATION .................................................................................... 4 4. REQUIREMENT .................................................................................................................... 5 REPORT No.: 4789476783-5 Page 3 of 6 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. 1. ATTESTATION OF TEST RESULTS Applicant Information Company Name: Guangzhou Shikun Electronics Co., Ltd Address: NO.6 Liankun Road,Huangpu District,Guangzhou,China Manufacturer Information Company Name: Guangzhou Shikun Electronics Co., Ltd Address: NO.6 Liankun Road,Huangpu District,Guangzhou,China EUT Description EUT Name IEEE 802.11b/g/n/a/ac 2T2R USB WiFi Module Integrated BT 2.1+EDR/4.2/5.0 Model SKI.WB638BU.2_668BU Sample Status Normal Sample ID 3047339 Sample Received date May 7, 2020 Date Tested May 8 ~ 15, 2020 APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47CFR§2.1091 KDB-447498 D01 V06 PASS Prepared By: Checked By: Kebo Zhang Shawn Wen Project Engineer Laboratory Leader Approved By: Stephen Guo Laboratory Manager REPORT No.: 4789476783-5 Page 4 of 6 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. 2. TEST METHODOLOGY The tests documented in this report were performed in accordance with KDB 447498 D01 General RF Exposure Guidance v06. 3. FACILITIES AND ACCREDITATION Accreditation Certificate A2LA (Certificate No.: 4102.01) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been assessed and proved to be in compliance with A2LA. FCC (FCC Designation No.: CN1187) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. Has been recognized to perform compliance testing on equipment subject to the Commission's Delcaration of Conformity (DoC) and Certification rules ISED(Company No.: 21320) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been registered and fully described in a report filed with Industry Canada. The Company Number is 21320. VCCI (Registration No.: G-20019, R-20004, C-20012 and T-20011) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been assessed and proved to be in compliance with VCCI, the Membership No. is 3793. Facility Name: Chamber D, the VCCI registration No. is G-20019 and R-20004 Shielding Room B , the VCCI registration No. is C-20012 and T-20011 Note 1: All tests measurement facilities use to collect the measurement data are located at Building 10, Innovation Technology Park, Song Shan Lake Hi tech Development Zone, Dongguan, 523808, China Note 2: The test anechoic chamber in UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch had been calibrated and compared to the open field sites and the test anechoic chamber is shown to be equivalent to or worst case from the open field site. Note 3: For below 30MHz, lab had performed measurements at test anechoic chamber and comparing to measurements obtained on an open field site. And these measurements below 30MHz had been correlated to measurements performed on an OFS. REPORT No.: 4789476783-5 Page 5 of 6 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. 4. REQUIREMENT LIMIT Limits for General Population/Uncontrolled Exposure Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Time |E| 2 , |H| 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f2)* 30 30-300 27.5 0.073 0.2 30 300-1500 -- -- f/150 30 1500-100,000 -- -- 1.0 30 Note 1: f = frequency in MHz, * means Plane-wave equivalent power density Note 2: General population/uncontrolled exposures apply in situations in which the general public may be exposed, or in which persons that are exposed as a consequence of their employment may not be fully aware of the potential for exposure or cannot exerci…

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The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. This report does not imply that the product(s) has met the criteria for certification. CFR 47 FCC PART 15 SUBPART C ISED RSS-247 ISSUE 2 CERTIFICATION TEST REPORT For IEEE 802.11b/g/n/a/ac 2T2R USB WiFi Module Integrated BT 2.1+EDR/4.2/5.0 MODEL NUMBER: SKI.WB638BU.2_668BU FCC ID: 2AR82-SKIWB668BU2 IC: 24728-SKIWB668BU2 REPORT NUMBER: 4789476783-1 ISSUE DATE: June 2, 2020 Prepared for Guangzhou Shikun Electronics Co., Ltd NO.6 Liankun Road,Huangpu District,Guangzhou,China Prepared by UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch Building 10, Innovation Technology Park, No. 1, Li Bin Road, Song Shan Lake Hi-Tech Development Zone, Dongguan, People’s Republic of China Tel: +86 769-22038881 Fax: +86 769 33244054 Website: www.ul.com REPORT No.: 4789476783-1 Page 2 of 95 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0087 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. . Revision History Rev. Issue Date Revisions Revised By V0 06/02/2020 Initial Issue REPORT No.: 4789476783-1 Page 3 of 95 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0087 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. . Summary of Test Results Clause Test Items FCC/ISED Rules Test Results 1 6dB Bandwidth and 99% Occupied Bandwidth FCC Part 15.247 (a) (2) RSS-247 Clause 5.2 (a) ISED RSS-Gen Clause 6.7 Pass 2 Peak Conducted Output Power FCC Part 15.247 (b) (3) RSS-247 Clause 5.4 (d) Pass 3 Power Spectral Density FCC Part 15.247 (e) RSS-247 Clause 5.2 (b) Pass 4 Conducted Bandedge and Spurious Emission FCC Part 15.247 (d) RSS-247 Clause 5.5 Pass 5 Radiated Bandedge and Spurious Emission FCC Part 15.247 (d) FCC Part 15.209 FCC Part 15.205 RSS-247 Clause 5.5 RSS-GEN Clause 8.9 Pass 6 Conducted Emission Test For AC Power Port FCC Part 15.207 RSS-GEN Clause 8.8 Pass 7 Antenna Requirement FCC Part 15.203 RSS-GEN Clause 6.8 Pass Note: 1.This test report is only published to and used by the applicant, and it is not for evidence purpose in China. 2. The measurement result for the sample received is <Pass> according to < CFR 47 FCC PART 15 SUBPART C >< ISED RSS-247 > when <Accuracy Method> decision rule is applied. REPORT No.: 4789476783-1 Page 4 of 95 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0087 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. . TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS .................................................................................... 6 2. TEST METHODOLOGY ........................................................................................................ 7 3. FACILITIES AND ACCREDITATION .................................................................................... 7 4. CALIBRATION AND UNCERTAINTY .................................................................................. 8 4.1. MEASURING INSTRUMENT CALIBRATION ................................................................ 8 4.2. MEASUREMENT UNCERTAINTY ................................................................................. 8 5. EQUIPMENT UNDER TEST ................................................................................................. 9 5.1. DESCRIPTION OF EUT ................................................................................................. 9 5.2. MAXIMUM OUTPUT POWER ........................................................................................ 9 5.3. CHANNEL LIST .............................................................................................................. 9 5.4. TEST CHANNEL CONFIGURATION ............................................................................. 9 5.5. THE WORSE CASE POWER SETTING PARAMETER ............................................... 10 5.6. DESCRIPTION OF AVAILABLE ANTENNAS .............................................................. 10 5.7. WORST-CASE CONFIGURATIONS ............................................................................ 10 5.8. TEST ENVIRONMENT ................................................................................................. 11 5.9. DESCRIPTION OF TEST SETUP ................................................................................ 12 6. MEASURING INSTRUMENT AND SOFTWARE USED ..................................................... 13 7. ANTENNA PORT TEST RESULTS .................................................................................... 15 7.1. ON TIME AND DUTY CYCLE ...................................................................................... 15 7.2. 6 dB DTS BANDWIDTH AND 99% BANDWIDTH ........................................................ 16 7.3. PEAK CONDUCTED OUTPUT POWER ...................................................................... 18 7.4. POWER SPECTRAL DENSITY ................................................................................... 19 7.5. CONDUCTED BANDEDGE AND SPURIOUS EMISSIONS ........................................ 21 8. RADIATED TEST RESULTS .............................................................................................. 23 8.1. RESTRICTED BANDEDGE ......................................................................................... 28 8.1.1. GFSK(1Mbps) MODE ...................…

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The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. This report does not imply that the product(s) has met the criteria for certification. CFR 47 FCC PART 15 SUBPART C ISED RSS-247 ISSUE 2 TEST REPORT For IEEE 802.11b/g/n/a/ac 2T2R USB WiFi Module Integrated BT 2.1+EDR/4.2/5.0 MODEL NUMBER: SKI.WB638BU.2_668BU FCC ID: 2AR82-SKIWB668BU2 IC: 24728-SKIWB668BU2 REPORT NUMBER: 4789476783-3 ISSUE DATE: June 2, 2020 Prepared for Guangzhou Shikun Electronics Co., Ltd NO.6 Liankun Road,Huangpu District,Guangzhou,China Prepared by UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch Building 10, Innovation Technology Park, No. 1, Li Bin Road, Song Shan Lake Hi-Tech Development Zone Dongguan, People’s Republic of China Tel: +86 769 22038881 Fax: +86 769 33244054 Website: www.ul.com REPORT No.: 4789476783-3 Page 2 of 214 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No: 10-SL-F0088 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Revision History Rev. Issue Date Revisions Revised By V0 06/02/2020 Initial Issue REPORT No.: 4789476783-3 Page 3 of 214 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No: 10-SL-F0088 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Summary of Test Results Clause Test Items FCC/ISED Rules Test Results 1 6dB Bandwidth and 99% Occupied Bandwidth FCC Part 15.247 (a) (2) RSS-247 Clause 5.2 (a) ISED RSS-Gen Clause 6.7 Pass 2 Conducted Output Power FCC Part 15.247 (b) (3) RSS-247 Clause 5.4 (d) Pass 3 Power Spectral Density FCC Part 15.247 (e) RSS-247 Clause 5.2 (b) Pass 4 Conducted Bandedge and Spurious Emission FCC Part 15.247 (d) RSS-247 Clause 5.5 Pass 5 Radiated Bandedge and Spurious Emission FCC Part 15.247 (d) FCC Part 15.209 FCC Part 15.205 RSS-247 Clause 5.5 RSS-GEN Clause 8.9 Pass 6 Conducted Emission Test For AC Power Port FCC Part 15.207 RSS-GEN Clause 8.8 Pass 7 Antenna Requirement FCC Part 15.203 RSS-GEN Clause 6.8 Pass Note: 1.This test report is only published to and used by the applicant, and it is not for evidence purpose in China. 2. The measurement result for the sample received is <Pass> according to < CFR 47 FCC PART 15 SUBPART C >< ISED RSS-247 > when <Accuracy Method> decision rule is applied. REPORT No.: 4789476783-3 Page 4 of 214 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No: 10-SL-F0088 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS .................................................................................... 6 2. TEST METHODOLOGY ........................................................................................................ 7 3. FACILITIES AND ACCREDITATION .................................................................................... 7 4. CALIBRATION AND UNCERTAINTY .................................................................................. 8 4.1. MEASURING INSTRUMENT CALIBRATION ................................................................ 8 4.2. MEASUREMENT UNCERTAINTY ................................................................................. 8 5. EQUIPMENT UNDER TEST ................................................................................................. 9 5.1. DESCRIPTION OF EUT ................................................................................................. 9 5.2. MAXIMUM OUTPUT POWER ........................................................................................ 9 5.3. CHANNEL LIST .............................................................................................................. 9 5.4. TEST CHANNEL CONFIGURATION ........................................................................... 10 5.5. THE WORSE CASE POWER SETTING PARAMETER ............................................... 10 5.6. THE WORSE CASE CONFIGURATIONS.................................................................... 10 5.7. DESCRIPTION OF AVAILABLE ANTENNAS .............................................................. 11 5.8. TEST ENVIRONMENT .....................................................................…

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