2AU7P-W35BWaist pack transmitter

SoundkingElectronics&SoundCo.,Ltd. Address:No.818IntegrityRoad,YinzhouDistrict,Ningbocity,ZhejiangProvince,China 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Jan.4,26 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:2AU7P-W35B ProductName:Waistpacktransmitter Thisletterservesasanattestationthattheequipmentidentifiedabove☐is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, ApplicantSignature PrintedName:ZhiChen Title:LabDirector Address:No.818IntegrityRoad,YinzhouDistrict,Ningbocity,ZhejiangProvince,China Tel.:0574-88235195-526 Email:[email protected] SoundkingElectronics&SoundCo.,Ltd. Address:No.818IntegrityRoad,YinzhouDistrict,Ningbocity,ZhejiangProvince,China 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck SBOM(SoftwareBillofMaterials)[ForDeviceisnotInherentcompliance] SectionComponentNameVersionSupplier 1 2 3

Soundking Electronics& Sound Co., Ltd. No.818 Integrity Road, Yinzhou District , Ningbo city, Zhejiang Province, China U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: Dec. 26, 25 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2AU7P-W35B [Soundking Electronics& Sound Co., Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, [Wilson Tech Service LLC] (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. [Wilson Tech Service LLC] ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: Wilson Tech Service LLC FRN: 0033402033 Address: 1312 17th Street Suite 692, Denver, CO, 80202, US Signature: Contact Person: Wilson Cheung Tel: +1-716-965-5112 Email: [email protected] Applicant Company Name: Soundking Electronics& Sound Co., Ltd. Address: No.818 Integrity Road, Yinzhou District , Ningbo city, Zhejiang Province, China Signature: Contact Person: Zhi Chen Tel: 0574-88235195-526 Email: [email protected]

SoundkingElectronics&SoundCo.,Ltd. Add:No.818IntegrityRoad,YinzhouDistrict,Ningbocity,ZhejiangProvince,China Tel:0574-88235195-526 Date:2025-07-18 DearSir/Madam, We,SoundkingElectronics&SoundCo.,Ltd.Herebydeclaresthefollowingstatement,PCB board,structureandinternalofthesemodels(s)arethesame,onlythemodelnamesisdifferent forthesemodels:doesnotaffecttheelectricalstructure: Productname:Waistpacktransmitter ModelsNo.:W35B,W35R8/BL,W35R8/BH,W35R4/BL,W35R4/BH,W35R2/BL,W35R2/BH, W8U-RL8,W4U-RL4,W2U-RL2 FCCID:2AU7P-W35B Sincerely, (Signature) Client’sname/title:ZhiChen/LabDirector Contactinformation/address:SoundkingElectronics&SoundCo.,Ltd./No.818Integrity Road,YinzhouDistrict,Ningbocity,ZhejiangProvince,China Tel::0574-88235195-526 E-Mail:[email protected]

SoundkingElectronics&SoundCo.,Ltd. Address:No.818IntegrityRoad,YinzhouDistrict,Ningbocity,ZhejiangProvince,China Jul.18,2025 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2AU7P-W35B I,theundersigned,herebyauthorizeShenzhenNCTTestingTechnologyCo.,Ltd.toactonourbehalfin allmattersrelatingtothisapplicationforequipmentcertification. AnyactcarriedoutbyShenzhenNCTTestingTechnologyCo.,Ltd.shallhavethesameeffectasour ownandIacknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsofcertification, asspecifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswithSoundkingElectronics& SoundCo.,Ltd. WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) PrintedName:ZhiChen Title:LabDirector Tel:0574-88235195-526 Email:[email protected]

FCCID:2AU7P-W35B RFExposureEvaluation AccordingtoKDB447498V06andpart2.1093，Unlessspecificallyrequiredbythe publishedRFexposureKDBprocedures,standalone1-gheadorbodyand10-gextremity SARevaluationforgeneralpopulationexposureconditions,bymeasurementornumerical simulation,isnotrequiredwhenthecorrespondingSARTestExclusionThreshold condition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤5mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f (GHz) ]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Here, SoaSARtestisnotrequired Frequen cy (MHz) Max Power (dBm) Targetpower W/tolerance (dBm) Maxtuneup power tolerance (dBm) Max Power (mW) Min. Distance (mm) Calc. thresholds limit MIC 551.100 0.816 1±1.02 1.5855.000.2353 3.0 557.100 0.722 1±1.02 1.5855.000.2366 3.0 563.350 0.726 1±1.0 2 1.5855.000.2379 3.0

佛山市新电科技有线公司 承 认 书 SPECIFICATION FOR APPROVAL 客 户 名 称 CUST OMER： 音王 客 户 料 号 CUS PART NO: SD-Y050021 品 名 规 格 ：PART NAME: SMA发射天线 料 号 PART NO: XR-SMA001 客户： 电子 日期： 24年 月 日 采购部 工程部 批准 恩平市通信鑫锐通信电子有限公司 日期：24年 5月 12日 工程部 销售部 批准 冯松欣 毛云飞 佛山市新电科技有线公司 备注：承认签章后请回复一份（或复印）给我司。如果在签章的承认书（或复印件）回复 给我司之前，下了有关此规格产品的订单且又无特别说明，那么我司就确定贵司已完全承 认了。 Please return one specification or one copy of it with your chop and signature of approval and retain the others for your record. In the event of an order being placed for this part number before the chop and signed with specification (or copy) is returned and without special explanation, it will be assumed that full approval have been given. 佛山市新电科技有线公司 目录 1. 目录................................................................................................ 2 2. 天线技术规格................................................................................. 3 3. 成品图纸......................................................................................... 4 佛山市新电科技有线公司 2.技术规格 产品图示： 产品测试参数： 电气指标 机械指标 产品名称Name SMA钢丝天线 型号Model Type SMA-001 电气参数ELECTRICAL SPECTFICATIONS 机械参数MECHANICAL SPECTFICATIONS 频率Frenquency Rang: 400-900MHz 尺寸Dimensions 100-150mm 带宽Band width 40 MHz 连接器型号Connector SMA STD PLUG 输入阻抗Impedance 50Ω 天线材料Antenna Material 驻波比VSWR ＜1.5 MAX 天线材料Antenna Material Brass 增益Peak Gain 0dBi 工作温度Working Temperature -40°C- +85°C 极化方式Polarization 垂直 存放温度Limit Temperature -40°C-+85°C 辐射方向Radiation 全向 功率容量Power 50W 佛山市新电科技有线公司

Page 1 of 36 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn FCCTESTREPORT FCCID:2AU7P-W35B Product: Waistpacktransmitter ModelName: W35B,W35R8/BL,W35R8/BH, W35R4/BL,W35R4/BH, W35R2/BL,W35R2/BH, W8U-RL8,W4U-RL4,W2U-RL2 Brand: ReportNo.: NCT23048004E Preparedfor SoundkingElectronics&SoundCo.,Ltd. No.818IntegrityRoad,YinzhouDistrict,Ningbocity,ZhejiangProvince,China Preparedby ShenzhenNCTTestingTechnologyCo.,Ltd. A101&2FB2,Fuqiao6thArea,XintianCommunity,FuhaiStreet,BaoanDistrict, Shenzhen,People’sRepublicofChina TEL:400-8868-419 FAX:86-755-27790922 ReportNo.:NCT23048004E Page 2 of 36 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn TESTRESULTCERTIFICATION Applicant’sname:SoundkingElectronics&SoundCo.,Ltd. Address: No.818IntegrityRoad,YinzhouDistrict,Ningbocity,Zhejiang Province,China Manufacture'sname:SoundkingElectronics&SoundCo.,Ltd. Address: No.818IntegrityRoad,YinzhouDistrict,Ningbocity,Zhejiang Province,China Productname:Waistpacktransmitter Modelname: W35B,W35R8/BL,W35R8/BH,W35R4/BL,W35R4/BH,W35R2/BL, W35R2/BH,W8U-RL8,W4U-RL4,W2U-RL2 Standards:FCCCFR47Part15Section15.247 Testprocedure:ANSIC63.10-2020/Cor1-2023 Dateoftest:Mar.07,2025-Jan.14,2026 DateofIssue:Jan.14,2026 ThisdevicedescribedabovehasbeentestedbyNCT,andthetestresultsshowthatthe equipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonlyto thetestedsampleidentifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofNCT,thisdocument maybealteredorrevisedbyNCT,personalonly,andshallbenotedintherevisionofthedocument. TestEngineer: KevenWu/Engineer TechnicalManager: HenryWang/Manager ReportNo.:NCT23048004E Page 3 of 36 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn TableofContentsPage TESTRESULTCERTIFICATION...................................................................................2 1.VERSION...................................................................................................................5 2.SUMMARYOFTESTRESULTS...............................................................................6 2.1TESTFACILITY.................................................................................................................7 2.2MEASUREMENTUNCERTAINTY....................................................................................7 3.GENERALINFORMATION.........................................................................................8 3.1GENERALDESCRIPTIONOFEUT.................................................................................8 3.2DESCRIPTIONOFTESTMODES..................................................................................10 3.3BLOCKDIGRAMSHOWINGTHECONFIGURATIONOFSYSTEMTESTED............10 3.4DESCRIPTIONOFSUPPORTUNITS(CONDUCTEDMODE)......................................10 3.5EQUIPMENTSLISTFORALLTESTITEMS.................................................................11 4.EMCEMISSIONTEST.............................................................................................13 4.1CONDUCTEDEMISSIONMEASUREMENT..................................................................13 4.1.1POWERLINECONDUCTEDEMISSIONLIMITS..................................................13 4.1.2TESTPROCEDURE...............................................................................................14 4.1.3DEVIATIONFROMTESTSTANDARD..................................................................14 4.1.4TESTSETUP...........................................................................................................14 4.1.5EUTOPERATINGCONDITIONS...........................................................................14 4.1.6TESTRESULTS......................................................................................................14 N/A....................................................................................................................................14 4.2.1RADIATEDEMISSIONLIMITS...............................................................................15 4.2.3TESTSETUP...........................................................................................................16 4.2.4TESTPROCEDURE...............................................................................................17 4.2.5TESTRESULTS....................................................................................................17 5.MAXIMUMRADIATEDPOWER(EIRP)...................................................................22 5.1APPLIEDPROCEDURES/LIMIT.............................................................................22 5.2TESTPROCEDURE..................................................................................................22 5.3DEVIATIONFROMSTANDARD...............................................................................22 5.4TESTSETUP..............................................................................................................22 5.5EUTOPERATIONCONDITIONS..............................................................................22 5.6TESTRESULTS.........................................................................................................23 6.CHANNELBANDWIDTH....................................................................................25 7.NECESSARYBANDWIDTH....................................................................................28 7.1LIMIT................................................................................................................................28 ReportNo.:NCT23048004E Page 4 of 36 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn TableofContentsPage 7.2TESTSETUP...................................................................................................................28 7.3TESTPROCEDURE........................................................................................................28 7.4TESTRESULTS.............................................................................…

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