2AYSN-DB21Duckiebot Founder edition

DB21-M DB21-M-NoJet DB21-M-NoBatt DB21-M-NoJetNoBat Duckiebot MOOC Founder's edition datasheet Duckiebot MOOC Founder's edition - DB21-M and variants 1.Use restriction notice This USE RESTRICTION NOTICE ("Notice") is for customers who are considering or currently using the Duckietown hardware products ("Products") set forth in this document. Duckieworks ("DW") may, at any time, modify this Notice which will be available to you in the latest specifications book for the Products. You should abide by the latest version of this Notice. If a DW subsidiary or distributor has its own use restriction notice on the Products, such a use restriction notice will additionally apply between you and the subsidiary or distributor. You should consult a sales representative of the subsidiary or distributor of DW on such a use restriction notice when you consider using the Products. Use Restrictions The Products are intended for demonstrational purposes (for example, in education or exhibitions), and are unsuitable for other uses, and so are their parts and accessories. Duckietown hardware is not a toy, and should not be treated as such. Keep out of reach of children, as small parts can be swallowed and plastic bags may cause suffocation. You should not use the Products for critical applications which may pose a life- or injury- threatening risk or are highly likely to cause significant property damage in the event of failure of the Products. You should consult your sales representative beforehand when you consider using the Products for such critical applications. In addition, you should not use the Products in weapons or military equipment. DW disclaims and does not assume any liability and damages arising out of misuse, improper use, modification, use of the Products for the above-mentioned critical applications, weapon and military equipment, or any deviation from the requirements set forth in this document. 30/12/2020 v2 Duckiebot MOOC Founder's edition - DB21-M and variants Design for Safety DW is making continuous efforts to further improve the quality and reliability of the Products; however, failure of a certain percentage of the Products is inevitable. Therefore, you should take sufficient care to ensure the safe design of your products such as component redundancy, anti-conflagration features, and features to prevent mis-operation in order to avoid accidents resulting in injury or death, fire or other social damage as a result of such failure. Export Control If the Products are controlled items under the export control laws or regulations of various countries, approval may be required for the export of the Products under the said laws or regulations. You should be responsible for compliance with the said laws or regulations. No License Implied The technical information shown in this specifications book is for your reference purposes only. The availability of this document shall not be construed as giving any indication that DW and its licensors will license any intellectual property rights in such information by any implication or otherwise. DW will not assume responsibility for any problems in connection with your use of such information or for any infringement of third-party rights due to the same. It is therefore your sole legal and financial responsibility to resolve any such problems and infringement. Governing Law This Notice shall be governed by and construed in accordance with the laws of Switzerland, without reference to principles of conflict of laws or choice of laws. All controversies and disputes arising out of or relating to this Notice shall be submitted to the exclusive jurisdiction of the Zurich District Court as the court of first instance. Other Applicable Terms and Conditions The terms and conditions in the DW additional specifications, which will be made available to you when you order the Products, shall also be applicable to your use of the 30/12/2020 v2 Duckiebot MOOC Founder's edition - DB21-M and variants Products as well as to this specifications book. You should review those terms and conditions when you consider purchasing and/or using the Products. 2.General information The Duckiebot MOOC Founder's Edition (DB) is a do-it-yourself (DIY) hardware components kit for assembling a model self-driving car. It is available in 4 variants, defined by the presence of the computational unit and / or th battery as follows: 3.What's in the box The Duckiebot DB21-M box includes the hardware components (and spares) to assemble, initialize, calibrate and operate a Duckiebot DB21-M. No soldering, nor additional tools are required. 30/12/2020 v2 Name Variant SKU Duckiebot MOOC Founder's Edition DB21 MOOC 2021 edition. DB21-M DB21-M without Jetson Nano 2GB DB21-M-NoJet DB21-M without battery DB21-M-NoBatt DB21-M without Jetson Nano 2GB and without battery DB21-M-NoJetNoBat Subsystem Name Number Chassis Roof plate 1 Bottom plate 1 Top plate 1 Side plate (left) 1 Side plate (right) 1 Side cover (left) 1 Side cover (right) 1 Support hut 1 Suport battery 2 Motor mount 4 Duckiebot MOOC Founder's edition - DB21-M and variants 30/12/2020 v2 Camera mount 1 Wheels Omni-wheel 1 Front wheels 2 Stand-offs Nylon stand-off M3x5+6mm M-F 1 Metal stand-off M2.5x18+6mm M-F 6 Metal hexagon stand-off M3 25mm F-F 2 Spacer M6x12x1.5mm (white) 2 Spacer M2.5x5x1mm (black) 4 Screws Nylon screw M2x8 4 Nylon screw M2.5x10 16 Metal screw M3x8 26 Metal screw M3x30 4 Metal screw M3x12 4 Nuts Metal nut M3 24 Nylon nut white M3 2 Nylon nut white M2.5 18 Nylon nut white M2 4 Computation Jetson Nano 2GB 1 Duckietown Hut 3.1 1 Actuation Blue DC Motors with Encoders 2 Front bumper 1 Back bumper 1 Power Duckiebattery 1 Tools Cross screwdriver 1 Interaction Screen 1 Add. parts Back pattern 1 Shutdown button with M12 nut 1 Fan for cooling 1 Wifi-dongle 1 Ethernet cable 1 Camera Calibration Pattern 1 Sensors IMU (model MPU-9250) 1 ToF sensor 1 Jetson Camera with cable 1 Swag Duckies 2 Instructions 1 Duckietown Stickers 2 Me…

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Duckieworks Ltd. Date: 2021-01-26 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AYSN-DB21 To Whom It May Concern: This letter is to statement that DB21, DB21-M, DB21-MNoJet, DB21-M-NoBat, DB21-M-NoJetNoBat, Duckiebot Founder edition has been tested according to FCC Part 15B by Waltek Testing Group Co., Ltd. (Test Report No.: WTF21D01002805E). And the SDOC file, meeting the requirements of the FCC regulations, would been provided when the device is sold by the responsible party in US. The service will not be sold until the SDOC is provided. If the sale does not have an SDOC, all responsibility is the responsibility of the applicant. Sincerely, Jacopo Tani CEO Duckieworks Ltd.

Duckieworks Ltd. Date: Jan. 26, 2021 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AYSN-DB21 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Schematics Block Diagram Operational Description Schematics.pdf Block Diagram.pdf Operational Description.pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Duckieworks Ltd. Jacopo Tani / CEO

Duckieworks Ltd. FCC ID: 2AYSN-DB21 POWER OF ATTORNEY Date: Jan. 26, 2021 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, the undersigned, hereby authorize Waltek Testing Group Co., Ltd. (Philo Zhong) on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Testing Group Co., Ltd. (Philo Zhong) in this regards on our behalf shall have the same effect as acts of our own. This authorization expires on Jan. 25, 2022. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, Duckieworks Ltd., are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, Duckieworks Ltd. Jacopo Tani / CEO

Duckieworks Ltd. FCC ID: 2AYSN-DB21 Date: 3/4/21 Subject: authorization for adding family models To whom it May concern, Statement We would like to confirm the product Duckiebot Founder edition with models DB21, DB21-M, are same in all respects. Only the model names are different for different market requirement. Whereas, DB21-M-NoJet, DB21-M-NoBat, (DB21-M-NoJetNoBat) are the same as DB21, DB21-M, but using a subset of components of the DB21, DB21-M. Yours sincerely, Jacopo Tani CEO Duckieworks Ltd.

Appendix-DB21-Photos Page 1 of 4 Photographs – Constructional Details EUT – Appearance View Model: DB21 FCC ID: 2AYSN-DB21 Appendix-DB21-Photos Page 2 of 4 Appendix-DB21-Photos Page 3 of 4 Appendix-DB21-Photos Page 4 of 4

Appendix-DB21-Photos Page 1 of 16 Photographs – Constructional Details EUT – Open View Model: DB21 FCC ID: 2AYSN-DB21 Appendix-DB21-Photos Page 2 of 16 Appendix-DB21-Photos Page 3 of 16 Appendix-DB21-Photos Page 4 of 16 Appendix-DB21-Photos Page 5 of 16 Appendix-DB21-Photos Page 6 of 16 Appendix-DB21-Photos Page 7 of 16 Appendix-DB21-Photos Page 8 of 16

Appendix-DB21-Photos Page 9 of 16 Appendix-DB21-Photos Page 10 of 16 Appendix-DB21-Photos Page 11 of 16 Appendix-DB21-Photos Page 12 of 16 Appendix-DB21-Photos Page 13 of 16 Appendix-DB21-Photos Page 14 of 16 Appendix-DB21-Photos Page 15 of 16 Appendix-DB21-Photos Page 16 of 16 ======End====== 2.4G/5G ANT

Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Page 1 of 7 TEST REPORT Referen ce No. .................... : WTF21D01002802W003 FCC ID ................................ : 2AYSN-DB21 Applicant ............................ : Duckieworks Ltd. Address .............................. : Turnerstrasse 39 8006, Zurich, Switzerland Manufacturer .................... : The same as above Address .............................. : The same as above Product ............................... : Duckiebot Founder edition Model(s). ............................ : DB21, DB21-M, DB21-MNoJet,DB21-M-NoBat, DB21-M- NoJetNoBat Brand Name ....................... : N/A Standards........................... : FCC Part 2.1091 Date of Receipt sample .... : 2021-01-15 Date of Test ....................... : 2021-01-18 to 2021-01-27 Date of Issue ...................... : 2021-01-28 Test Result ......................... : Pass Remarks: The re sults shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group Co., Ltd. Address: No. 77, Houjie Section, Guantai Road, Houjie Town, Dongguan City, Guangdong, China Tel: +86-769-2267 6998 Fax: +86-769-2267 6828 Compiled by: Approved by: levi Xiao / Project Engineer Daniel Liu / Designated Reviewer Reference No.: WTF21D01002802W003 Page 2 of 7 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 2 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 CONTENTS ............................................................................................................................................................ 2 3 REVISION HISTORY ............................................................................................................................................ 3 4 GENERAL INFORMATION .................................................................................................................................. 4 4.1 GENERAL DESCRIPTION OF E.U.T. ................................................................................................................ 4 4.2 DETAILS OF E.U.T. ......................................................................................................................................... 4 4.3 TEST FACILITY ................................................................................................................................................. 4 5 TEST SUMMARY .................................................................................................................................................. 5 6 RF EXPOSURE ...................................................................................................................................................... 6 6.1 PROCEDURES AND REQUIREMENTS ............................................................................................................... 6 6.2 TEST RESULT .................................................................................................................................................. 7 Reference No.: WTF21D01002802W003 Page 3 of 7 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 3 Revision History Test report No. Date of Receipt sample Date of Test Date of Issue Purpose Comment Approved WTF21D01002 802W003 2021-01-15 2021-01-18 to 2021-01-27 2021-01-28 original - Valid Reference No.: WTF21D01002802W003 Page 4 of 7 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 4 General Information 4.1 General Description of E.U.T. Product: Duckiebot Founder edition Model(s): DB21, DB21-M, DB21-MNoJet,DB21-M-NoBat, DB21-M-NoJetNoBat Model Description: Only different for the model names. Wi-Fi Specification: 2.4G-802.11b/g/n HT20/n HT40 5G-802.11a/n/ac HT20 /n/ac HT40 /ac HT80 Hardware Version: A Software Version: V1.0 4.2 Details of E.U.T. Ratings: DC 5V from battery 4.3 Test Facility The test facility has a test site registered with the following organizations: ISED CAB identifier: CN0013. Test Firm Registration No.: 7760A. Waltek Testing Group Co., Ltd. Has been registered and fully described in a report filed with the Industry Canada. The acceptance letter from the Industry Canada is maintained in our files. Registration number 7760A, October 15, 2016. FCC Designation No.: CN1201. Test Firm Registration No.: 523476. Waltek Testing Group Co., Ltd. EMC Laboratory `has been registered and fully described in a report filed with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in our files. Registration number 523476, September 10, 2019. Reference No.: WTF21D01002802W003 Page 5 of 7 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 5 Test Summary Test Items Test Requirement Result Maximum Permissible Exposure (Exposure of Humans to RF Fields) 2.1091 PASS Reference No.: WTF21D01002802W003 Page 6 of 7 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 6 RF Exposure Test Requirement: FCC Part 2.1091 Test Mode: The EUT work in test mode(Tx). 6.1 Procedures and Requirements 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 0.2m normally can be maintained between the user and the device. FCC Part 1.1307: (A) Limits for Occupational / Controlled 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) 0.3-3.0 614 1.63 (100)* 6 …

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Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Page 1 of 110 TEST REPORT Referen ce No. .................... : WTF21D01002802W002 V1 FCC ID................................. : 2AYSN-DB21 Applicant ............................ : Duckieworks Ltd. Address .............................. : Turnerstrasse 39 8006, Zurich, Switzerland Manufacturer ..................... : The same as above Address .............................. : The same as above Product Name .................... : Duckiebot Founder edition Model No. . ......................... : DB21, DB21-M, DB21-MNoJet,DB21-M-NoBat, DB21-M-NoJetNoBat Brand. ................................. N/A Standards ........................... : FCC CFR47 Part 15 E Section 15.407: 2018 Date of Receipt sample ..... : 2021-01-15 Date of Test ........................ : 2021-01-18 to 2021-01-27 Date of Issue ...................... : 2021-03-08 Test Result ......................... : Pass Remarks: The re sults shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group Co., Ltd. Address: No. 77, Houjie Section, Guantai Road, Houjie Town, Dongguan City, Guangdong, China Tel: +86-769-2267 6998 Fax: +86-769-2267 6828 Compiled by: Approved by: levi Xiao / Project Engineer Daniel Liu / Designated Reviewer Reference No.: WTF21D01002802W002 V1 Page 2 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 2 Contents Page 1 COVER PAGE ........................................................................................................................................ 1 2 CONTENTS .......................................................................................................................................................... 2 3 REVISION HISTORY .......................................................................................................................................... 3 4 GENERAL INFORMATION ................................................................................................................................ 4 4.1 GENERAL DESCRIPTION OF E.U.T. .............................................................................................................. 4 4.2 DETAILS OF E.U.T. ....................................................................................................................................... 4 4.3 CHANNEL LIST ............................................................................................................................................... 5 4.4 TEST MODE DESCRIPTION: ........................................................................................................................... 6 4.5 TEST FACILITY ............................................................................................................................................... 8 5 EQUIPMENT USED DURING TEST ................................................................................................................ 9 5.1 EQUIPMENTS LIST ......................................................................................................................................... 9 5.2 DESCRIPTION OF SUPPORT UNITS ............................................................................................................... 9 5.3 MEASUREMENT UNCERTAINTY ................................................................................................................... 10 5.4 TEST EQUIPMENT CALIBRATION ................................................................................................................. 10 6 TEST SUMMARY .............................................................................................................................................. 11 7 RADIATED EMISSIONS................................................................................................................................... 12 7.1 EUT OPERATION ......................................................................................................................................... 12 7.2 TEST SETUP ................................................................................................................................................ 13 7.3 SPECTRUM ANALYZER SETUP .................................................................................................................... 14 7.4 TEST PROCEDURE ...................................................................................................................................... 15 7.5 CORRECTED AMPLITUDE & MARGIN CALCULATION ................................................................................... 15 7.6 SUMMARY OF TEST RESULTS ..................................................................................................................... 16 8 DUTY CYCLE ..................................................................................................................................................... 30 8.1 SUMMARY OF TEST RESULTS ..................................................................................................................... 30 9 BAND EDGE ...................................................................................................................................................... 37 9.1 TEST PRODUCE ........................................................................................................................................... 37 9.2 TEST RESULT .............................................................................................................................................. 38 10 6 DB BANDWIDTH ............................................................................................................................................ 50 10.1 TEST P…

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Reference No.: WTF21D01002802W002 V1 Page 76 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Test result plots shown as follows: 802.11a U-NII-1 Low channel 802.11a U-NII-1 Middle channel Reference No.: WTF21D01002802W002 V1 Page 77 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11a U-NII-1 High channel 802.11n(HT20) U-NII-1 Low channel Reference No.: WTF21D01002802W002 V1 Page 78 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11n(HT20) U-NII-1 Middle channel 802.11n(HT20) U-NII-1 High channel Reference No.: WTF21D01002802W002 V1 Page 79 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11n(HT40) U-NII-1 Low channel 802.11n(HT40) U-NII-1 High channel Reference No.: WTF21D01002802W002 V1 Page 80 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11ac(HT20) U-NII-1 Low channel 802.11ac(HT20) U-NII-1 Middle channel Reference No.: WTF21D01002802W002 V1 Page 81 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11ac(HT20) U-NII-1 High channel 802.11ac(HT40) U-NII-1 Low channel Reference No.: WTF21D01002802W002 V1 Page 82 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11n(HT40) U-NII-1 High channel 802.11ac(HT80) U-NII-1 Low channel Reference No.: WTF21D01002802W002 V1 Page 83 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11a U-NII-3 Low channel 802.11a U-NII-3 Middle channel Reference No.: WTF21D01002802W002 V1 Page 84 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11a U-NII-3 High channel 802.11n(HT20) U-NII-3 Low channel Reference No.: WTF21D01002802W002 V1 Page 85 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11n(HT20) U-NII-3 Middle channel 802.11n(HT20) U-NII-3 High channel Reference No.: WTF21D01002802W002 V1 Page 86 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11n(HT40) U-NII-3 Low channel 802.11n(HT40) U-NII-3 High channel Reference No.: WTF21D01002802W002 V1 Page 87 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11ac(HT20) U-NII-3 Low channel 802.11ac(HT20) U-NII-3 Middle channel Reference No.: WTF21D01002802W002 V1 Page 88 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11ac(HT20) U-NII-3 High channel 802.11ac(HT40) U-NII-3 Low channel Reference No.: WTF21D01002802W002 V1 Page 89 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11n(HT40) U-NII-3 High channel 802.11ac(HT80) U-NII-3 Low channel Reference No.: WTF21D01002802W002 V1 Page 90 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 13 Power Spectral density Test Requirement: FCC CFR47 Part 15 Section 15.407(a) Test Method: KDB662911 D01 Multiple Transmitter Output v02r01 KDB789033 D02 General U-NII Test Procedures New Rules v02r01, Section F Test Limit: ≤11.00dBm/MHz for Operation in the U-NII-1(5150MHz-5250MHz)of mobile device ≤30.00dBm/500KHz for Operation in the U-NII-3(5725MHz- 5850MHz)of device Test Result: PASS 13.1 Test Procedure: 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: U-NII-1 RBW = 1MHz, VBW ≥3* RBW Sweep = auto; Detector Function = Peak. Trace = Max hold. U-NII-3 RBW = 510KHz, VBW ≥3* RBW Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. Reference No.: WTF21D01002802W002 V1 Page 91 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 13.2 Test Result: Band Operation mode Power Spectral Density (dBm/MHz) Low Middle High U-NII-1 802.11a 4.359 2.844 4.363 802.11n(HT20) 3.135 4.648 3.333 802.11n(HT40) 0.027 / 2.390 802.11ac(HT20) 3.076 4.106 4.914 802.11ac(HT40) -0.032 / 1.904 802.11ac(HT80) -3.968 / / Limit ≤11.00dBm/MHz Band Operation mode Power Spectral Density (dBm/MHz) Low Middle High U-NII-3 802.11a -0.022 -0.862 -1.416 802.11n(HT20) 2.166 1.154 0.860 802.11n(HT40) -3.238 / -3.671 802.11ac(HT20) 1.483 0.271 0.205 802.11ac(HT40) -2.973 / -4.070 802.11ac(HT80) -6.255 / / Limit ≤30.00dBm/500kHz * All transmit signals are completely uncorrelated with each other, Directional gain = G ANT which is less than 6dBi. So the limit does not be reduced. Reference No.: WTF21D01002802W002 V1 Page 92 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Test result plots shown as follows: 802.11a U-NII-1 Low channel 802.11a U-NII-1 Middle channel Reference No.: WTF21D01002802W002 V1 Page 93 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11a U-NII-1 High channel 802.11n(HT20) U-NII-1 Low channel Reference No.: WTF21D01002802W002 V1 Page 94 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11n(HT20) U-NII-1 Middle channel 802.11n(HT20) U-NII-1 High channel Reference No.: WTF21D01002802W002 V1 Page 95 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11n(HT40) U-NII-1 Low channel 802.11n(HT40) U-NII-1 High channel Reference No.: WTF21D01002802W002 V1 Page 96 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11ac(HT20) U-NII-1 Low channel 802.11ac(HT20) U-NII-1 Middle channel Reference No.: WTF21D01002802W002 V1 Page 97 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11ac(HT20) U-NII-1 High channel 802.11ac(HT40) U-NII-1 Low channel Reference No.: WTF21D01002802W002 V1 Page 98 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11n(HT40) U-NII-1 High channel 802.11ac(HT80) U-NII-1 Low channel Reference No.: WTF21D01002802W002 V1 Page 99 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11a U-NII-3 Low channel 802.11a U-NII-3 Middle channel Reference No.: WTF21D01002802W002 V1 Page 100 of 110 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 802.11a U-NII-3 High channel 802.11n(HT20) U-NII-3 Low channel…

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Appendix-DB21-Photos Page 1 of 1 Photographs – Constructional Details Photograph - Spurious Emissions Radiated Test Setup Model: DB21 FCC ID: 2AYSN-DB21 For 30MHz-1000MHz For Above 1GHz