2AA7STMA-1000X4ICar Amplifier

Rev1/26/2023 RockfordCorporation FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:December16,2025 Ref:AttestationStatementsPart2.911(d)(7)Filing FCCID:2AA7STMA-1000X4I ApplicantFRN:0023054885 RockfordCorporation(“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,RockfordCorporationisourdesignatedU.S.agentforserviceofprocessfortheabove referencedFCCID. RockfordCorporationacceptstomaintainanagentfornolessthanoneyearafterthegranteehas terminatedallmarketingandimportationortheconclusionofanyCommission-relatedproceeding involvingtheequipment. RockfordCorporationaccepts,asofthedateofthefilingoftheapplication,theobligationofthe designatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentInformation: Name:RockfordCorporation U.S.AgentFRN:0023054885 Address:600SouthRockfordDriveTempeArizona85281USA ContactPerson:JonathanComune Tel.:480-517-3021 Email:[email protected] Sincerely, RockfordCorporationDesignatedAgent:RockfordCorporation CompanyRepresentative:JonathanComuneU.S.Agentprintedname:JonathanComune Signature:Signature:

Rev11/20/07 RockfordFosgate FederalCommunicationsCommission AuthorizationandEvaluationDivision ConfidentialityRequestregardingapplicationforcertificationof FCCID:2AA7STMA-1000X4I PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestconfidential treatmentofinformationaccompanyingthisapplicationasoutlinedbelow: ExhibitTypeFileName (BlockDiagram,Schematics,Operational Description) (BlockDiagram.pdf,Schematics.pdf, OperationalDescription.pdf) Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarilyreleasedto thepublic.Thepublicdisclosureofthesematerialsmaybeharmfultotheapplicantandprovide unjustifiedbenefitstoitscompetitors. TheapplicantunderstandsthatpursuanttoSection0.457oftheRules,disclosureofthis applicationandallaccompanyingdocumentationwillnotbemadebeforethedateoftheGrant forthisapplication. PursuanttoDA04-1705June15,2004oftheCommission’spublicnotice,wealsorequestthat theinformationattachedtothisapplicationbetemporarilyconfidentialfor180daysasoutlined below: ExhibitTypeFileName UserManual.pdf ExternalPhotos.pdf InternalPhotos.pdf TestSetupPhotos.pdf UserManual.pdf ExternalPhotos.pdf InternalPhotos.pdf TestSetupPhotos.pdf Sincerely, Signature: printedname:JonathanComune Date:December10,2025

ProductName:CarAmplifier Model:TMA-1000X4i Manufacture:RockfordCorporation Rated:12VDC100A FCCID:2AA7STMA-1000X4I

Report No. : EED32R81285102Page 1 of 7 RF Exposure Evaluation Report Product:Car Amplifier Trade mark:Rockford Fosgate Model/Type reference :TMA-1000X4i Serial Number:N/A Report Number:EED32R81285102 FCC ID:2AA7STMA-1000X4I Date of Issue:Nov. 19, 2025 Test Standards: 47 CFR Part 1.1307 47 CFR Part 1.1310 47 CFR Part 2.1091(mobile devices) 47 CFR Part 2.1093(portable devices) KDB 447498 D04 Interim General RF Exposure Guidance v01 Test result:PASS Prepared for: Rockford Corporation 600 S Rockford Dr, Tempe, AZ 85281, USA Prepared by: Centre Testing International Group Co., Ltd. Hongwei Industrial Park, Zone 70, Bao’an District, Shenzhen, Guangdong, China TEL: +86-755-3368 3668 FAX: +86-755-3368 3385 Compiled by:Reviewed by: Shifeng WeiKeven Tan Approved by:Date:Nov. 19, 2025 Aaron Ma Check No.:6426250725 Report No. : EED32R81285102Page 2 of 7 1 Contents Page 1 CONTENTS........................................................................................................................................................................2 2 GENERAL INFORMATION..............................................................................................................................................3 2.1 CLIENTINFORMATION................................................................................................................................................... 3 2.2 GENERALDESCRIPTION OFEUT...................................................................................................................................3 2.3 PRODUCTSPECIFICATION SUBJECTIVE TO THIS STANDARD...........................................................................................3 2.4 TESTLOCATION.............................................................................................................................................................4 2.5 DEVIATION FROMSTANDARDS......................................................................................................................................4 2.6 ABNORMALITIES FROMSTANDARDCONDITIONS..........................................................................................................4 2.7 OTHERINFORMATIONREQUESTED BY THECUSTOMER................................................................................................4 3 SAR EVALUATION...........................................................................................................................................................5 3.1 RF EXPOSURECOMPLIANCEREQUIREMENT.................................................................................................................5 3.1.1 Limits....................................................................................................................................................................5 3.1.2 TestProcedure....................................................................................................................................................5 3.1.3 EUT RF Exposure Evaluation..........................................................................................................................6 Report No. : EED32R81285102Page 3 of 7 2 General Information 2.1 Client Information Applicant: Rockford Corporation Address of Applicant: 600 S Rockford Dr, Tempe, AZ 85281, USA Manufacturer: DAINTY & GEMMY TECHNOLOGY VIET NAM CO.,LTD. Address of Manufacturer: (Lot B2-2 Cong Hoa Industrial park, Tran Hung Dao Ward, Hai Phong City, Viet Nam) Factory: DAINTY & GEMMY TECHNOLOGY VIET NAM CO.,LTD. Address of Factory: (Lot B2-2 Cong Hoa Industrial park, Tran Hung Dao Ward, Hai Phong City, Viet Nam) 2.2 General Description of EUT Product Name: Car Amplifier Model No.: TMA-1000X4i Test Model No.: TMA-1000X4i Trade mark: Rockford Fosgate 2.3Product Specification subjective to this standard Frequency Range:BLE: 2402MHz~2480MHz Modulation Type:BLE: GFSK Test Power Grade:Default Test Software of EUT:ESP32-S3 Antenna Type: PCB antenna Antenna Gain: 4.54 dBi Power Supply: DC 12V Sample Received Date: Aug. 22, 2025 Sample tested Date: Aug. 22, 2025 to Sep. 02, 2025 Report No. : EED32R81285102Page 4 of 7 2.4 Test Location All tests were performed at: Centre Testing International Group Co., Ltd Hongwei Industrial Park, Zone 70, Bao'an District, Shenzhen, Guangdong, China Telephone: +86 (0) 755 33683668 Fax:+86 (0) 755 33683385 No tests were sub-contracted. FCC Designation No.: CN1164, Test Firm Registration No.: 260439 2.5 Deviation from Standards None. 2.6 Abnormalities from Standard Conditions None. 2.7 Other Information Requested by the Customer None. Report No. : EED32R81285102Page 5 of 7 3 SAR Evaluation 3.1 RF Exposure Compliance Requirement 3.1.1Limits The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula and f is in GHz, d is the separation distance (cm), and ERP20cm is per Formula (B.1). The 1 mW Blanket Exemption of § 1.1307(b)(3)(i)(A) applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power of no more than 1 mW, regardless of separation distance. 3.1.2TestProcedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Report No. : EED32R81285102Page 6 of 7 3.1.3EUT RF Exposure Evaluation For Stand alone: Frequency (MHz) Estimation distance (cm) Max. Conducted Output power (dBm) Antenna Gain (dBi) ERP (dBm) ERP (mW) Limit (mW) MPE ratio @2.4GHz208.174.54 10.56 11.3763 30600.0037 Note： ①EIRP=conducted power+antenna gain； ②ERP=EIRP-2.15; ③EIRP(dBm) = Field strength of the fundamental signal(dBuV/m@3m) – 95.23…

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ReportNo.:EED32R81285102Page1of35 Appendix:BluetoothLE ReportNo.:EED32R81285102Page2of35 Contents AppendixA:DTSBandwidth.......................................................................................................3 TestResult...............................................................................................................................................3 TestGraphs.............................................................................................................................................4 AppendixB:OccupiedChannelBandwidth................................................................................7 TestResult...............................................................................................................................................7 TestGraphs.............................................................................................................................................8 AppendixC:Maximumconductedoutputpower....................................................................11 TestResultPeak...................................................................................................................................11 TestGraphsPeak.................................................................................................................................12 AppendixD:Maximumpowerspectraldensity.......................................................................15 TestResult.............................................................................................................................................15 TestGraphs...........................................................................................................................................16 AppendixF:Bandedgemeasurements....................................................................................19 TestResult.............................................................................................................................................19 TestGraphs...........................................................................................................................................20 AppendixG:ConductedSpuriousEmission.............................................................................22 TestResult.............................................................................................................................................22 TestGraphs...........................................................................................................................................23 AppendixH:DutyCycle............................................................................................................32 TestResult.............................................................................................................................................32 TestGraphs...........................................................................................................................................33 ReportNo.:EED32R81285102Page3of35 AppendixA:DTSBandwidth TestResult TestModeAntennaFrequency[MHz] DTSBW [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict BLE_1MAnt124020.6362401.6882402.3240.5PASS BLE_1MAnt124400.6522439.6802440.3320.5PASS BLE_1MAnt124800.6202479.7002480.3200.5PASS BLE_2MAnt124021.1042401.4762402.5800.5PASS BLE_2MAnt124401.1722439.4202440.5920.5PASS BLE_2MAnt124801.1962479.3762480.5720.5PASS ReportNo.:EED32R81285102Page4of35 TestGraphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS ReportNo.:EED32R81285102Page5of35 BLE_1M-Ant1-2480-PASS BLE_2M-Ant1-2402-PASS ReportNo.:EED32R81285102Page6of35 BLE_2M-Ant1-2440-PASS BLE_2M-Ant1-2480-PASS ReportNo.:EED32R81285102Page7of35 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaFrequency[MHz] OCB[MHz] FL[MHz]FH[MHz] Limit [MHz] Verdict BLE_1MAnt124021.02542401.49692402.5223------ BLE_1MAnt124401.02322439.49132440.5145------ BLE_1MAnt124801.01752479.49892480.5164------ BLE_2MAnt124022.03522400.99782403.0330------ BLE_2MAnt124402.02562439.00302441.0286------ BLE_2MAnt124802.02982479.00372481.0335------ ReportNo.:EED32R81285102Page8of35 TestGraphs BLE_1M-Ant1-2402 BLE_1M-Ant1-2440 ReportNo.:EED32R81285102Page9of35 BLE_1M-Ant1-2480 BLE_2M-Ant1-2402 ReportNo.:EED32R81285102Page10of35 BLE_2M-Ant1-2440 BLE_2M-Ant1-2480 ReportNo.:EED32R81285102Page11of35 AppendixC:Maximumconductedoutputpower TestResultPeak TestModeAntennaFrequency[MHz] ConductedPeak Powert[dBm] Conducted Limit[dBm] Verdict BLE_1MAnt124027.26≤30PASS BLE_1MAnt124407.93≤30PASS BLE_1MAnt124807.85≤30PASS BLE_2MAnt124027.22≤30PASS BLE_2MAnt124407.76≤30PASS BLE_2MAnt124808.17≤30PASS ReportNo.:EED32R81285102Page12of35 TestGraphsPeak BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS ReportNo.:EED32R81285102Page13of35 BLE_1M-Ant1-2480-PASS BLE_2M-Ant1-2402-PASS ReportNo.:EED32R81285102Page14of35 BLE_2M-Ant1-2440-PASS BLE_2M-Ant1-2480-PASS ReportNo.:EED32R81285102Page15of35 AppendixD:Maximumpowerspectraldensity TestResult TestModeAntennaFrequency[MHz]Result[dBm/3kHz]Limit[dBm/3kHz]Verdict BLE_1MAnt12402-8.30≤8.00PASS BLE_1MAnt12440-7.64≤8.00PASS BLE_1MAnt12480-7.65≤8.00PASS BLE_2MAnt12402-10.10≤8.00PASS BLE_2MAnt12440-9.72≤8.00PASS BLE_2MAnt12480-9.44≤8.00PASS ReportNo.:EED32R81285102Page16of35 TestGraphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS ReportNo.:EED32R81285102Page17of35 BLE_1M-Ant1-2480-PASS BLE_2M-Ant1-2402-PASS ReportNo.:EED32R81285102Page18of35 BLE_2M-Ant1-2440-PASS BLE_2M-Ant1-2480-PASS ReportNo.:EED32R81285102Page19of35 AppendixF:Bandedgemeasurements TestResult TestModeAntennaChNameFrequency[MHz]RefLevel[dBm]Result[dBm]Limit[dBm]Verdict BLE_1MAnt1Low24025.56-48.07≤-14.44PASS BLE_1MAnt1High24806.43-47.74≤-13.57PASS BLE_2MAnt1Low24027.05-42.74≤-12.96PASS BLE_2MAnt1High24808.11-47.24≤-11.89PASS ReportNo.:EED32R81285102Page20of35 TestGraphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2480-PASS ReportNo.:EED32R81285102Page21of35 BLE_2M-Ant1-2402-PASS BLE_2M-Ant1-2480-PASS ReportNo.:EED32R812851…

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ReportNo.:EED32R81285102Page26of35 BLE_1M-Ant1-2480-0~Reference-PASS BLE_1M-Ant1-2480-30~1000-PASS ReportNo.:EED32R81285102Page27of35 BLE_1M-Ant1-2480-1000~26500-PASS BLE_2M-Ant1-2402-0~Reference-PASS ReportNo.:EED32R81285102Page28of35 BLE_2M-Ant1-2402-30~1000-PASS BLE_2M-Ant1-2402-1000~26500-PASS ReportNo.:EED32R81285102Page29of35 BLE_2M-Ant1-2440-0~Reference-PASS BLE_2M-Ant1-2440-30~1000-PASS ReportNo.:EED32R81285102Page30of35 BLE_2M-Ant1-2440-1000~26500-PASS BLE_2M-Ant1-2480-0~Reference-PASS ReportNo.:EED32R81285102Page31of35 BLE_2M-Ant1-2480-30~1000-PASS BLE_2M-Ant1-2480-1000~26500-PASS ReportNo.:EED32R81285102Page32of35 AppendixH:DutyCycle TestResult TestModeAntennaFrequency[MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] BLE_1MAnt124022.102.5084.000.76 BLE_1MAnt124402.102.5084.000.76 BLE_1MAnt124802.102.5084.000.76 BLE_2MAnt124021.061.8856.382.49 BLE_2MAnt124401.061.8856.382.49 BLE_2MAnt124801.061.8856.382.49 ReportNo.:EED32R81285102Page33of35 TestGraphs NTNV-BLE_1M-Ant1-2402 NTNV-BLE_1M-Ant1-2440 ReportNo.:EED32R81285102Page34of35 NTNV-BLE_1M-Ant1-2480 NTNV-BLE_2M-Ant1-2402 ReportNo.:EED32R81285102Page35of35 NTNV-BLE_2M-Ant1-2440 NTNV-BLE_2M-Ant1-2480 ***EndofReport***

Wireless Device Over the Air Performance Data Summary REPORT NO. : OQ1D0806 EQUIPMENT : ESP-ANT S-H BRAND NAME : ESPRESSIF MODEL NAME : ESP32-S3-MINI-1 DEVICE RECEIVING DATE : Nov. 16, 2021 TEST DATE(S) : Nov. 16, 2021 ~ Nov. 16, 2021 Reviewed by: Approved by: Feynman Liu / Vice Manager Kevin Chu / Manager Sporton International (Kunshan) Inc. No. 1098, Pengxi North Road, Kunshan Economic Development Zone Jiangsu Province 215300 People’s Republic of China Sporton International (Kunshan) Inc. Page Number : 2 of 10 TEL : +86-512-57900158 Report Issued Date : Dec. 14, 2021 FAX : +86-512-57900958 Report Version : 1.0 Wireless Device OTA RF Performance Data Summary Report No. : OQ1D0806 Table of Contents Revision History ---------------------------------------------------------------------------------------------------------------------- 3 1. Administration Data ----------------------------------------------------------------------------------------------------------- 4 1.1 Testing Laboratory ------------------------------------------------------------------------------------------------------- 4 1.2 Applicant ------------------------------------------------------------------------------------------------------------------- 4 2. Product Photo ------------------------------------------------------------------------------------------------------------------- 4 3. Summary of Test Results ---------------------------------------------------------------------------------------------------- 5 4. FS Pattern ------------------------------------------------------------------------------------------------------------------------- 6 5. Description for EUT Testing Position ------------------------------------------------------------------------------------ 9 Sporton International (Kunshan) Inc. Page Number : 3 of 10 TEL : +86-512-57900158 Report Issued Date : Dec. 14, 2021 FAX : +86-512-57900958 Report Version : 1.0 Wireless Device OTA RF Performance Data Summary Report No. : OQ1D0806 Revision History REPORT NO. VERSION DESCRIPTION ISSUED DATE OQ1D0806 1.0 Initial issue of report Dec. 14, 2021 Sporton International (Kunshan) Inc. Page Number : 4 of 10 TEL : +86-512-57900158 Report Issued Date : Dec. 14, 2021 FAX : +86-512-57900958 Report Version : 1.0 Wireless Device OTA RF Performance Data Summary Report No. : OQ1D0806 1. Administration Data 1.1 Testing Laboratory Test Site Sporton International (Kunshan) Inc. Test Site Location No. 1098, Pengxi North Road, Kunshan Economic Development Zone Jiangsu Province 215300 People’s Republic of China TEL: +86-0512-5790-0158 FAX: +86-0512-5790-0958 Chamber □ OTA01-KS □ OTA02- KS □ OTA03-KS □ OTA04-KS ■ OTA05-KS ■: Indicates the chamber(s) used in this test report. 1.2 Applicant Company Name ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD Address Suite 204, Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, China 2. Product Photo Sporton International (Kunshan) Inc. Page Number : 5 of 10 TEL : +86-512-57900158 Report Issued Date : Dec. 14, 2021 FAX : +86-512-57900958 Report Version : 1.0 Wireless Device OTA RF Performance Data Summary Report No. : OQ1D0806 3. Summary of Test Results Test / Position Frequency (MHz) Avg Gain (dBi) Peak Gain (dBi) Directivity (dBi) Efficiency (dB) Efficiency (%) Free Space 2397 -1.79 3.72 5.51 -1.79 66.15 2402 -1.74 3.69 5.43 -1.74 66.94 2407 -1.53 3.86 5.39 -1.53 70.28 2412 -1.32 3.99 5.31 -1.32 73.85 2417 -1.25 3.99 5.24 -1.25 75.07 2422 -1.17 4.00 5.17 -1.17 76.35 2427 -1.15 3.94 5.09 -1.15 76.67 2432 -1.18 3.87 5.05 -1.18 76.21 2437 -1.22 3.79 5.01 -1.22 75.58 2442 -1.15 3.92 5.06 -1.15 76.82 2447 -1.07 3.99 5.06 -1.07 78.12 2452 -0.99 4.17 5.16 -0.99 79.65 2457 -0.88 4.31 5.19 -0.88 81.71 2462 -0.82 4.43 5.25 -0.82 82.72 2467 -0.82 4.49 5.31 -0.82 82.81 2472 -0.86 4.54 5.40 -0.86 82.07 2477 -0.95 4.47 5.42 -0.95 80.40 2482 -1.04 4.42 5.45 -1.04 78.77 2487 -1.12 4.40 5.51 -1.12 77.31 Sporton International (Kunshan) Inc. Page Number : 6 of 10 TEL : +86-512-57900158 Report Issued Date : Dec. 14, 2021 FAX : +86-512-57900958 Report Version : 1.0 Wireless Device OTA RF Performance Data Summary Report No. : OQ1D0806 4. FS Pattern Cut1 Cut2 Total Power (dBm) Angle (? Scale: 1/div Min: -8 Max: 3 0 180 30 210 60 240 90270 120 300 150 330 2397 MHz 2402 MHz 2407 MHz 2412 MHz 2417 MHz 2422 MHz 2427 MHz 2432 MHz 2437 MHz 2442 MHz 2447 MHz 2452 MHz 2457 MHz 2462 MHz 2467 MHz 2472 MHz 2477 MHz 2482 MHz 2487 MHz Total Power (dBm) Angle (? Scale: 2/div Min: -10 Max: 6 0 180 30 210 60 240 90270 120 300 150 330 2397 MHz 2402 MHz 2407 MHz 2412 MHz 2417 MHz 2422 MHz 2427 MHz 2432 MHz 2437 MHz 2442 MHz 2447 MHz 2452 MHz 2457 MHz 2462 MHz 2467 MHz 2472 MHz 2477 MHz 2482 MHz 2487 MHz Sporton International (Kunshan) Inc. Page Number : 7 of 10 TEL : +86-512-57900158 Report Issued Date : Dec. 14, 2021 FAX : +86-512-57900958 Report Version : 1.0 Wireless Device OTA RF Performance Data Summary Report No. : OQ1D0806 Cut3 Free Space Gain Pattern Total Power (dBm) Angle (? Scale: 2/div Min: -8 Max: 6 0 180 30 210 60 240 90270 120 300 150 330 2397 MHz 2402 MHz 2407 MHz 2412 MHz 2417 MHz 2422 MHz 2427 MHz 2432 MHz 2437 MHz 2442 MHz 2447 MHz 2452 MHz 2457 MHz 2462 MHz 2467 MHz 2472 MHz 2477 MHz 2482 MHz 2487 MHz Total Response (dB) -12 4 -10 -8 -6 -4 -2 0 2 X Y Z Azimuth = 0.0 Elevation = 0.0 Roll = 0.0 Sporton International (Kunshan) Inc. Page Number : 8 of 10 TEL : +86-512-57900158 Report Issued Date : Dec. 14, 2021 FAX : +86-512-57900958 Report Version : 1.0 Wireless Device OTA RF Performance Data Summary Report No. : OQ1D0806 Free Space Gain Pattern Total Response (dB) -12 4 -10 -8 -6 -4 -2 0 2 Z Y X Azimuth = 88.6 Elevation = -1.7 Roll = -96.3 Total Response (dB) -12 4 -10 -8 -6 -4 -2 0 2 X Z Y Azimuth = -9.7 Elevation = -84.6 Roll = 79.4 Sporton International (Kunshan) Inc. Page Number : 9 of 10 TEL : +86-512-57900158 Report Issued Date : Dec. 14, 2021 FAX : +86-512-57900958 Report Version : 1.0 Wireless Device OTA RF Performance Data Summary Report No. : OQ1D08…

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Report No. : EED32R81285101Page 1 of 52 TEST REPORT Product:Car Amplifier Trade mark:Rockford Fosgate Model/Type reference :TMA-1000X4i Serial Number:N/A Report Number:EED32R81285101 FCC ID:2AA7STMA-1000X4I Date of Issue:Nov. 19, 2025 Test Standards:47 CFR Part 15 Subpart C Test result:PASS Prepared for: Rockford Corporation 600 S Rockford Dr, Tempe, AZ 85281, USA Prepared by: Centre Testing International Group Co., Ltd. Hongwei Industrial Park, Zone 70, Bao’an District, Shenzhen, Guangdong, China TEL: +86-755-3368 3668 FAX: +86-755-3368 3385 Compiled by:Reviewed by: Shifeng WeiKeven Tan Approved by:Date:Nov. 19, 2025 Aaron Ma Check No.:6426250725 Report No. : EED32R81285101Page 2 of 52 1 Content 1 CONTENT............................................................................................................................................................................2 2 TEST SUMMARY............................................................................................................................................................... 3 3 GENERAL INFORMATION...............................................................................................................................................4 3.1 CLIENTINFORMATION....................................................................................................................................................4 3.2 GENERALDESCRIPTION OFEUT.................................................................................................................................4 3.3 TESTCONFIGURATION..................................................................................................................................................5 3.4 TESTENVIRONMENT.....................................................................................................................................................6 3.5 DESCRIPTION OFSUPPORTUNITS...............................................................................................................................6 3.6 TESTLOCATION.............................................................................................................................................................6 3.7 MEASUREMENTUNCERTAINTY(95%CONFIDENCE LEVELS,K=2).............................................................................7 4 EQUIPMENT LIST..............................................................................................................................................................8 5 TEST RESULTS AND MEASUREMENT DATA.........................................................................................................12 5.1 ANTENNAREQUIREMENT............................................................................................................................................12 5.2 CONDUCTEDEMISSIONS.............................................................................................................................................13 5.3 MAXIMUMCONDUCTEDOUTPUTPOWER.................................................................................................................. 16 5.4 DTS BANDWIDTH........................................................................................................................................................17 5.5 MAXIMUMPOWERSPECTRALDENSITY.....................................................................................................................18 5.6 BANDEDGE MEASUREMENTS ANDCONDUCTEDSPURIOUSEMISSION...................................................................19 5.7 RADIATEDSPURIOUSEMISSION& RESTRICTED BANDS...........................................................................................20 6 APPENDIX A.....................................................................................................................................................................35 7 PHOTOGRAPHS OF TEST SETUP..............................................................................................................................36 8 PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS..................................................................................... 38 Report No. : EED32R81285101Page 3 of 52 2 Test Summary Test ItemTest RequirementResult Antenna Requirement 47 CFR Part 15 Subpart C Section 15.203/15.247 (c) PASS AC Power Line Conducted Emission 47 CFR Part 15 Subpart C Section 15.207 PASS DTS Bandwidth 47 CFR Part 15 Subpart C Section 15.247 (a)(2) PASS Maximum Conducted Output Power 47 CFR Part 15 Subpart C Section 15.247 (b)(3) PASS Maximum Power Spectral Density 47 CFR Part 15 Subpart C Section 15.247 (e)PASS Band Edge Measurements 47 CFR Part 15 Subpart C Section 15.247(d) PASS Conducted Spurious Emissions 47 CFR Part 15 Subpart C Section 15.247(d) PASS Radiated Spurious Emission & Restricted bands 47 CFR Part 15 Subpart C Section 15.205/15.209 PASS Report No. : EED32R81285101Page 4 of 52 3 General Information 3.1 Client Information Applicant:Rockford Corporation Address of Applicant:600 S Rockford Dr, Tempe, AZ 85281, USA Manufacturer:DAINTY & GEMMY TECHNOLOGY VIET NAM CO.,LTD. Address of Manufacturer: (Lot B2-2 Cong Hoa Industrial park, Tran Hung Dao Ward, Hai Phong City, Viet Nam) Factory:DAINTY & GEMMY TECHNOLOGY VIET NAM CO.,LTD. Address of Factory:(Lot B2-2 Cong Hoa Industrial park, Tran Hung Dao Ward, Hai Phong City, Viet Nam) 3.2 General Description of EUT Product Name: Car Amplifier Model No.: TMA-1000X4i Test Model No.: TMA-1000X4i Trade mark: Rockford Fosgate Product Type: MobilePortableFix Location Operation Frequency: 2402MHz~2480MHz Modulation Type: GFSK Transfer Rate:1Mbps2Mbps Number of Channel: 40 Antenna Type:PCB antenna Antenna Gain:4.54 dBi Power Supply: DC 12V Test Voltage:DC 12V Sample Received Date: Aug. 22, 2025 Sample tested Date:Aug. 22, 2025 to Sep. 02, 2025 Report No. : EED32R81285101Page 5 of 52 Operation Frequency each of channel Channel Frequency (MHz) Channel Freq…

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