2AKLX-28303A20-SuperNexus

ASTRAL ® A20-SuperNexus 16to32-Channel,HexVersityRackMountReceiver withSpectraBandandNexLinkTechnology UserGuidev1.00(Draft1) TableofContents WelcometotheA20-SuperNexus4 KeyFeatures4 SpectraBand5 FilterRange5 HexVersity5 DigitalWirelessModulation5 NexLinkWirelessTransmitterControl6 GainForward6 SafetyInformation7 ArchitecturalOverview8 PanelViews10 Powering13 QuickStart13 NavigatingtheA20-SuperNexusUserInterface14 RXViews16 Menus26 TXList27 RFMenu31 AntennaModes31 AntennaPairSettings34 RFHistory34 AntennaRFOverloadIndication35 RTSA(RealTimeSpectrumAnalyzer)36 ScanMode39 AutoAssign41 AudioOutputs43 A20-Opto46 Timecode50 Network50 RFMirrorMode52 NexLinkMenu54 SystemMenu55 QuickSetupMenu60 WebApp63 UpdatingFirmware71 ChannelExpansionLicenses71 AstralWirelessGuitarSystem72 SuperNexusAccessories73 A20-OptoAccessories73 SuperNexusUserGuide2 A20-Outpost-NL(ComingSoon)74 A20-MonarchAntenna74 NexLinkStatusAlerts75 FrequencyBandRestrictions78 ConnectorPinAssignments79 A20-SuperNexusSpecifications80 A20-MonarchSpecifications83 NoteonRFInterference84 ServicingtheA20-SuperNexus84 Warranty84 LegalNotices85 DeclarationofConformity89 SuperNexusUserGuide3 WelcometotheA20-SuperNexus TheA20-SuperNexusisanultra-highperformance,16to32-channelwirelessmicrophonereceiverin1RUrackmountchassis.Itfeatures16independent,HexVersitychannelsthatcanbeexpandedto32 channelsviasoftwarelicense.TheA20-SuperNexusfeaturesNexLink,aninnovativeconceptinwirelessmicrophonereceivers:fullremotecontrolofmicrophonetransmittersviaanintegrated,long distance2.4GHzlink. KeyFeatures ●16-channelultra-high-performance,HexVersityreceiversina1RUsize. ●Expandableto24or32channelsviaoneortwo8-channelexpansionlicenses. ●169MHz–1525MHztuningrangeviaSpectraBandTechnology. ●Threeindependentbands,eachtunabletoany24MHzwidefilterbandforatotalof72MHzofsimultaneouslyusablespectrum. ●NexLink:integrated,longdistanceremotecontrolofindividualorgroupsofwirelesstransmitters. ●IntegratedRealTimeSpectrumAnalyzer(RTSA)andscannerforexcellentvisualizationofRFactivity. ●AutoAssign:automaticdeploymentofcleanRFfrequenciesinseconds. ●MultipleAntennaModes,supportingDiversity,4Versity,HexVersity,3-ZoneCombinerconfigurationsandmore. ●ThreeBNCantennainputpairs-eachcompatiblewithpassive,bias-powered,andsmartantennas. ●RFMirrorModeforfullyredundantoperation. ●Danteaudio-over-IPforRFreceiveraudio. ●4networkports(2xRJ45,2xSFP)configurableforDanteandControl,overcopperorfiber-opticconnections. ●WebAppcontrolfromabrowseronanycomputer,smartphoneortablet. ●Upto32channelsofMADI,Dante,AES,andanalogmic/lineoutputs. ●ExpansionportforconnectingtheA20-Opto-HMAorA20-Opto-ST1RUexpansionchassis(comingsoon). ●BridgingfromDanteinputtoAESandAnalogoutputs. ●Wide,12.4”color,sunlight-readableOLEDarraywithtouchforcontrolandmonitoring. ●SupportsGainForwardArchitecture:NogainsettingontheAstraltransmitter.Adjustgainatthereceiverormixer. ●100%digitallong-rangemodulationdeliversthelongesttransmissiondistanceofanydigitalwirelesssystemonthemarket. ●RFSAWfiltersforexcellentrejectionofinterferencesignals. ●Excellentaudioquality,full10Hz–20kHzaudiobandwidth. ●BNCtimecodeinputforautomaticjamoftimecodetotransmittersoverNexLink. ●BNCcascadeoutsfordaisy-chainingRFsignalstootherreceivers. ●AutomaticpassthroughofBNCantennainputstocascadeoutputsintheeventofpowerloss. ●Front-panel3.5mmand1/4”headphoneoutputs. ●USB-AandUSB-CportsforUSBflashdrives,keyboards,andtransmitterpairing.SupportforUSBhubs. ●PoE+outputforpoweringexternalPoE+powereddevicesincludingtheA20-NexusandA20-Outpost-NL(comingsoon). SuperNexusUserGuide4 SpectraBand TheA20-SuperNexusincorporatesSpectraBand,atechnologythatenablestheA20-SuperNexustotuneoverasuperwiderangeof169-1525MHz.Availabletuningbandswithinthisrangevaryby country. Forinstance: IntheUSA,theavailablefrequencyrangesare: ●TheVHFband(169-216MHz) ●TheentireUHFBroadcastTVband(470-608MHz) ●The600MHzGuardBand(614-616MHz) ●The600MHzDuplexGap(653-663MHz) ●The900MHzISMBand(902-928MHz) ●The950MHzSTLBand(941.5-960MHz) ●The1.5GHzAFTRCCband(1435-1525MHz),withanappropriatelicense. IntheUK,theavailablefrequencyrangesare: ●TheVHFband(173-210MHz) ●ThecoreUKUHFTVband(470-702MHz) ●The800MHzDuplexGap(823-832MHz) ●The800MHzGuardBand(863-865MHz) ●TheDMEbands(961-1015MHz,1045-1075MHz,1105-1154MHz),withanappropriatelicense. ●TheIMTband(1518-1525MHz) Pleaseseehttps://www.sounddevices.com/available-frequencies/forfurtherdetailedinformationonwhichfrequencyrangesareavailableforeachcountry. FilterRange SpectraBand’s169-1525MHzglobalrangeisdividedintomultipletightly-filteredfrequencyrangesknownas‘filterranges’.Thesharpattenuationateitherendofthefiltersignificantlyreducesoutofband interferenceresultinginexcellentrangeandperformance. HexVersity SuperNexus’HexVersityarchitectureiswell-suitedtomassivevenueeventswithitsunrivaledantennacoverage.Thesixantennainputscanbeconfiguredinmultiplewaysfordifferentapplications, includingDiversity(1antennapair),4Versity(2antennapairs),HexVersity(3antennapairs)andZoneCombinemodes.SeeAntennaModes. SuperNexusincludesthreeindependenttuningbands,eachtunabletoanyofthe24MHzwidefilterranges,foratotalof72MHzofsimultaneouslyusablespectrum. DigitalWirelessModulation LongRangeandStandardModulation TheAstralwirelessproductsoffertwoproprietarydigitalmodulationschemesthatprovideunbeatablerange,unrivaledaudioquality,andverylowlatency.LongRangeorStandardmodulationcanbe selectedonaper-receiver-channelbasis.ThemodulationsettingmustmatchbetweentheAstraltransmitterandtheA20-SuperNexusinorderforthetransmittedsignaltobereceivedanddecoded. SuperNexusUserGuide5 IntermodulationImmunity BecausetheAstralseriestransmitterdesignisinherentlyresistanttointermodulation,multipleAstraldigitalwirelesstransmitterscanbeusedsimultaneouslyonnearbyadjacentfrequencieswithout significantworryofintermodulationinterference.Systemscanbeusedtogetherwhenfrequencycentersareseparatedbyatleast400kHz.Notethatwhenoperatinginthe902-928MHzISMBand,itis recommendedtoseparatechannelfrequenciesbyatleast1MHz. NexLinkWirelessTransmitterControl NexL…

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POR TABLE, PROFESSIONAL AUDIO Sound Devices, LLC • E7556 State Rd. 23 and 33 Reedsburg, Wisconsin 53959 USA 608.524.0625 Voice • 608.524.0655 Fax www.sounddevices.com U.S. Agent Designation for Service of Process (Applicant is Both Grantee and U.S. Agent) TO: Kiwa Nederland B.V. Wilmersdorf 50 7327 AC Apeldoorn Postbus 137 7300 AC Apeldoorn Netherlands ATTENTION: FCC Certification – Section 2.911(d)(7) Information This letter is to confirm that the Applicant will also serve as the U.S. Agent for Service of Process as required by 47 CFR 2.911(d)(7). The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The Applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information changes. Applicant & Agent Company name: Sound Devices, LLC FRN: 0026100891 Grantee Code: 2AKLX Contact person name: Matthew Anderson Agent name: Matthew Anderson Street address: PO BOX 576, E7556 State Road 23 and 33, USA ZIP/City/State Reedsburg, WI 53959 Telephone number: (608) 524-0625 Email address: [email protected] Signature Contact person*: Date: March 26, 2024 Signature Agent*: Date: March 26, 2024

POR TABLE, PROFESSIONAL AUDIO Sound Devices, LLC • E7556 State Rd. 23 and 33 Reedsburg, Wisconsin 53959 USA 608.524.0625 Voice • 608.524.0655 Fax www.sounddevices.com Certification Application Attestation Statements Company name: Sound Devices, LLC Address: P.O. Box 576, E7556 State Road 23 and 33 City: Reedsburg, WI 53959 Country: United States of America Subject: FCC ID: 2AKLX-28303 To Whom It May Concern: Statement for 47 CFR section 2.911(d)(5)(i) Sound Devices LLC certifies that as of the date of the application the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, including affiliates or subsidiaries of the named companies, the applicant must include an explanation on why the equipment is not “covered” equipment. Additional Explanation: <N/A> Statement for 47 CFR section 2.911(d)(5)(ii) Sound Devices LLC (“the applicant”) certifies that, as of the date of the filing of this application, the applicant - is / - is not identified on the Covered List as an entity producing “covered” equipment. Date: 03/26/2024 City: Reedsburg Name : Matthew Anderson Function: President and CEO FRN: 0026100891 Telephone number: (608) 524-0625 Email address: [email protected] Signature:

POR TABLE, PROFESSIONAL AUDIO Sound Devices, LLC • E7556 State Rd. 23 and 33 Reedsburg, Wisconsin 53959 USA 608.524.0625 Voice • 608.524.0655 Fax www.sounddevices.com U.S. Agent Designation for Service of Process (Applicant is Both Grantee and U.S. Agent) TO: Kiwa Nederland B.V. Wilmersdorf 50 7327 AC Apeldoorn Postbus 137 7300 AC Apeldoorn Netherlands ATTENTION: FCC Certification – Section 2.911(d)(7) Information This letter is to confirm that the Applicant will also serve as the U.S. Agent for Service of Process as required by 47 CFR 2.911(d)(7). The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The Applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information changes. Applicant & Agent Company name: Sound Devices, LLC FRN: 0026100891 Grantee Code: 2AKLX Contact person name: Matthew Anderson Agent name: Matthew Anderson Street address: PO BOX 576, E7556 State Road 23 and 33, US A ZIP/City/State Reedsburg, WI 53959 Telephone number: (608) 524-0625 Email address: [email protected] Signature Contact person*: Date: March 26, 2024 Signature Agent*: Date: March 26, 2024

POR TABLE, PROFESSIONAL AUDIO Sound Devices, LLC • E7556 State Rd. 23 and 33 Reedsburg, Wisconsin 53959 USA 608.524.0625 Voice • 608.524.0655 Fax www.sounddevices.com Declaration of Authorization We Name: Sound Devices, LLC Address: PO BOX 576, E7556 State Road 23 and 33 City: Reedsburg, WI 53959 Country: USA Declare that: Name Representative of agent: Daniel Sims Agent Company name: Kiwa Ltd Address: Arnolds Court, Arnolds Farm Lane City: Mountnessing, Brentwood Country UK is authorized to apply for Certification of the following product(s): Product description: A20-SuperNexus Type designation: 28303 Trademark: Sound Devices Validity/expiry date: 03-26-2024 / 03-26-2025 on our behalf. Date: March 26, 2024 City: Reedsburg Name: Matthew Anderson Function: President and CEO Signature:

PORTABLE, PROFESSIONAL AUDIO Sound Devices, LLC • E7556 State Rd. 23 and 33 Reedsburg, Wisconsin 53959 USA 608.524.0625 Voice • 608.524.0655 Fax www.sounddevices.com Company Name: Sound Devices, LLC Address: P.O.Box 576, E7556 State Road 23 and 33 City: Reedsburg, WI 53959 Country: United States of America To: Kiwa N etherlands B.V., Dept. FCC TCB Wilmersdorf 50 7327 AC Apeldoorn The Netherlands Subject: Request for confidentiality FCC ID: 2AKLX-28303 Reference number: Dear FCC TCB, 1. Long-Term Confidentiality Pursuant to 47 CFR Section 0.459(a) & (b), we hereby request non-disclosure and confidential treatment of the following materials submitted in support of FCC certification application: Bill(s) of Material Block Diagrams Operational Description Schematic Diagrams Tune-up Procedure Above materials contain secrets, proprietary and technical information, which would customarily be guarded from competitors under 47 CFR, section 0.457(d)(2). Disclosure or publication or any portion of this company confidential material to other parties could cause substantial competitive harm and provide unjustified benefits for competitors. 2. Short-Term Confidentiality (STC) Pursuant to Public Notice DA 04-1705 of the Commission’s policy, in order to comply with the marketing regulations in 47 CFR §2.803 and the importation rules in 47 CFR §2.1204, a pplicant hereby requests Short-Term Confidential treatment of the following materials (See notes below): Internal Photos User’s Manual Test Set-up Photos External Photos Justification: Date: March 26, 2024 Name and signature of applicant: Matthew Anderson

Page 1 of 3 External Photographs Device Model Name: A20-SuperNexus Device Model Number: 28303 Manufacturer: Sound Devices, LLC FRONT VIEW REAR VIEW LEFT VIEW RIGHT VIEW Page 2 of 3 TOP VIEW BOTTOM VIEW Page 3 of 3 2.4 GHz ANTENNAS FITTED TO FRONT PANEL (SUPPLIED ACCESSORY) 2.4 GHz ANTENNAS FITTED TO REAR PANEL (SUPPLIED ACCESSORY)

Page 1 of 2 ID Label and Location Device Model Name: A20-SuperNexus Device Model Number: 28303 Manufacturer: Sound Devices, LLC Drawing of ID Label: Dimensions in mm Page 2 of 2 Location of Label:

Page 1 of 7 Internal Photographs Device Model Name: A20-SuperNexus Device Model Number: 28303 Manufacturer: Sound Devices LLC PCB-RF (TOP) Page 2 of 7 PCB-RF (BOTTOM) Page 3 of 7 PCB-RF (TOP-SHIELDS REMOVED) Page 4 of 7 PCB-RF (BOTTOM-SHIELDS REMOVED) Page 5 of 7 PCB-MAIN (TOP) PCB-MAIN (BOTTOM) Page 6 of 7 PCB-MAIN (TOP-SHIELDS REMOVED) PCB-MAIN (BOTTOM-SHIELDS REMOVED) Page 7 of 7 PCB-ANTENNA INPUT PCB-MADI INTERFACE PCB-FRONT PANEL

1 (7) Copyright©Verkotan 2024 Document ID: FCC MPE-Based RF exposure evaluation report_A20-SuperNexus_ID6699_04062024.docx RF Exposure Evaluation Report Date of Report 11/06/2024 Client’s Contact person: Matthew Anderson Number of pages: 7 Responsible Test engineer: Jesper Varis Testing laboratory: Verkotan Oy Elektroniikkatie 17 90590 Oulu Finland Client: Sound Devices LLC E7556 State Road 23 and 33 Reedsburg 53959 Wisconsin USA Tested devices Multi-Channel Wireless Microphone Receiver Related reports: - Testing has been carried out in accordance with: 47CFR §2.1091 Radiofrequency Radiation Exposure Evaluation: Mobile Devices FCC published RF exposure KDB procedures Documentation: The test report must always be reproduced in full; reproduction of an excerpt only is subject to written approval of the testing laboratory Test Results: The DUT complies with the requirements in respect of all parameters subject to the test. The test results relate only to devices specified in this document Date and signatures: 11.06.2024 For the contents: Laboratory Manager 2 (7) Copyright©Verkotan 2024 Document ID: FCC MPE-Based RF exposure evaluation report_A20-SuperNexus_ID6699_04062024.docx TABLE OF CONTENTS 1. SUMMARY OF SAR TEST REPORT ............................................................................................... 3 1.1 TEST DETAILS ........................................................................................................................... 3 1.2 EVALUATION RESULTS ............................................................................................................ 3 2. DESCRIPTION OF THE DEVICE UNDER TEST (DUT) .................................................................... 4 2.1 SUPPORTED FREQUENCY BANDS AND OPERATIONAL MODES ............................................. 5 3. TEST EXCLUSIONS ......................................................................................................................... 6 4. RESULTS.......................................................................................................................................... 7 4.1 STANDALONE EXPOSURE ........................................................................................................ 7 3 (7) Copyright©Verkotan 2024 Document ID: FCC MPE-Based RF exposure evaluation report_A20-SuperNexus_ID6699_04062024.docx 1. SUMMARY OF SAR TEST REPORT 1.1 Test Details Device under Test (DUT): Product: Multi-Channel Wireless Microphone Receiver Manufacturer: Sound Devices LLC Model: A20-SuperNexus Hardware Version: 28303 FCC ID: 2AKLX-28303 Mobile/Portable device Mobile Document ID: FCC MPE-Based RF exposure evaluation report_A20- SuperNexus_ID6699_04062024.docx Document History/changes Initial FCC Test Firm Designation Number: FI0005 1.2 Evaluation Results The device conforms to the requirements of the standards when the maximum ERP is less than or equal to the Test Exclusion Threshold Limit. System Maximum ERP [mW] MPE-Based Exemption threshold at 20cm separation [mW] Result Bluetooth LE 4.8 768 PASS 2.4GHz Proprietary FHSS 7.7 768 PASS 4 (7) Copyright©Verkotan 2024 Document ID: FCC MPE-Based RF exposure evaluation report_A20-SuperNexus_ID6699_04062024.docx 2. DESCRIPTION OF THE DEVICE UNDER TEST (DUT) The DUT is a 32-channel digital wireless audio receiver positioned on a desktop or rack mount. The DUT supports long-range proprietary 2.4GHz wireless back-link and Bluetooth LE technologies. The DUT has 4 antennas, front RF ports A and B & rear RF ports A and B that are shared between BLE and proprietary transmitters. Only one RF port can be used at a time and for only one technology at a time. Antenna used in all 4 RF ports is model W1010, manufactured by Pulse Electronics. As the model of the antenna are the same for all antennas, the power exemption calculations in this report applies to every RF ports. According to antenna datasheet “Antenna datasheet_w1010_1622314480.pdf” antenna gain is 2 dBi. Figure 1 Front and rear A and B antenna's Exposure Environment General population, uncontrolled 5 (7) Copyright©Verkotan 2024 Document ID: FCC MPE-Based RF exposure evaluation report_A20-SuperNexus_ID6699_04062024.docx 2.1 Supported Frequency Bands and Operational Modes TX Frequency bands Modes of Operation Transmitter Frequency Range (MHz) Bluetooth LE 2402 – 2480 2.4 GHz Proprietary FHSS 2400 – 2482 6 (7) Copyright©Verkotan 2024 Document ID: FCC MPE-Based RF exposure evaluation report_A20-SuperNexus_ID6699_04062024.docx 3. TEST EXCLUSIONS FCC MPE-based Exemption thresholds in 447498 D04 Interim General RF Exposure Guidance v01 are shown in a table below. According to Table B.1 in 447498 D04 Interim General RF Exposure Guidance v01, FCC MPE-based Exemption threshold can be calculated according to formulas: 1500-100 000 MHz: 19.2R 2 where: R = Separation distance (m) f = Frequency (MHz) Transmission mode Frequency [f] Separation distance [d] P th [W] P th [mW] Bluetooth LE 2402 0.2 0.768 768 2.4GHz Proprietary FHSS 2400 0.2 0.768 768 7 (7) Copyright©Verkotan 2024 Document ID: FCC MPE-Based RF exposure evaluation report_A20-SuperNexus_ID6699_04062024.docx 4. RESULTS 4.1 Standalone Exposure Transmission mode Maximum Conducted Power [dBm] Time- Averaged Output power [dBm] Time- Averaged Output power [mW] Power Gain of Antenna, G [dBi] Time- Averaged EIRP [dBm] Time- Averaged ERP [dBm] Time- Averaged ERP [mW] P th [mW] Bluetooth LE 7 7 5.0 2 9 6.85 4.8 768 2.4GHz Proprietary FHSS 9 9 7.9 2 11 8.85 7.7 768 The ERP of the DUT is below the test exclusion threshold.

Wireless External Antenna for 2.4 GHz Application Pulse Part Number: W1010 © 2014. All Rights Reserved. Pulse Finland Oy Takatie 6 90440 Kempele, Finland Tel: +358 207 935 500 Fax: +358 207 935 501 www.pulselectronics.com/products/antennas LxxxA (xx/xx) Features - Shortest antennas in product line Omnidirectional radiation - For WLAN devices using WiFi (802.11b/g), Bluetooth®, ZigBee™ and other applications in the ISM 2.4GHz band - Omnidirectional radiation pattern provides broad 360° coverage - One-quarter wavelength dipole configuration - Connection and color options easily integrate with OEM designs Connector - SMA (Male) Weight 6.3 grams Carton 20/bag; 500/carton Dimensions: Unless otherwise specified, all tolerances are ± Electrical Specifications @ +25 °C Note: This part number is lead-free and RoHS compliant. No additional suffix or identifier is required. Inches mm 0.10 0.25 3.255 1.017 .019 25.85 .50 .039 82.7 1 Frequency [GHz] Gain [dBi] Impedance [Nom] VSWRPolarization Electrical Length Radiation 2.4 – 2.5 2.050 Ω≤ 2.0Vertical 1/4, di- pole Omni Wireless External Antenna for 2.4 GHz Application Pulse Part Number: W1010 © 2014. All Rights Reserved. Pulse Finland Oy Takatie 6 90440 Kempele, Finland Tel: +358 207 935 500 Fax: +358 207 935 501 www.pulselectronics.com/products/antennas LxxxA (xx/xx) Application Notes Omni-directional antennas provide a uniform, donut- shaped, 360° radiation pattern. The omni-directional pattern is suitable for point-to-multipoint broadcast- ing in all directions. This antenna is primarily used for WLAN applications. However, it can also be used for a variety of other applications withing the spec ified frequency range. When used as an access point, the antenna is ideally located at the center of the coverage area. Gain Performance W1010 Vertical Position Horizontal Position

Page 1 of 110 File Name: Sound Devices LLC.14508-6 Issue 01 QMF21J - Issue 05 - KEC Issue 04; 47 CFR Part 15C 2023 Radio Test Report Sound Devices LLC A20-SuperNexus 28303 47 CFR Part 15.247 Effective Date 1st October 2023 DSS: Part 15 Spread Spectrum Transmitter Test Date: 9th April 2024 to 15th April 2024 Report Number: 04-14508-6-24 Issue 01 The testing was carried out by Kiwa Electrical Compliance, an independent test house, at their test facility located at: Kiwa Electrical Compliance Arnolds Court Arnolds Farm Lane Mountnessing Essex CM13 1UT U.K. www.kiwa.com Telephone: +44 (0) 1277 352219 Email: [email protected] This laboratory is accredited in accordance with the recognised International Standard ISO/IEC 17025. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer joint ISO-ILAC-IAF communiqué dated April 2017). This report is not to be reproduced by any means except in full and in any case not without the written approval of Kiwa Electrical Compliance. ©2024 Kiwa Electrical Compliance REPORT NUMBER: 04-14508-6-24 Issue 01 ALL RIGHTS RESERVED Page 2 of 110 File Name: Sound Devices LLC.14508-6 Issue 01 QMF21J - Issue 05 - KEC Issue 04; 47 CFR Part 15C 2023 Arnolds Court, Arnolds Farm Lane, Mountnessing, Brentwood Essex, CM13 1UT Certificate of Test 14508-6 The equipment noted below has been fully tested by Kiwa Electrical Compliance and, where appropriate, conforms to the relevant subpart of 47 CFR Part 15C. This is a certificate of test only and should not be confused with an equipment authorisation. Other standards may also apply. Equipment: A20-SuperNexus Model Number: 28303 Unique Serial Number: VZ0224036000 (AC Conducted emissions only) VZ0224036004 (all other tests) Applicant: Sound Devices LLC PO BOX 576 E7556 State Road 23 and 33 Reedsburg, Wisconsin 53959 USA Proposed FCC ID 2AKLX-28303 Full measurement results are detailed in Report Number: 04-14508-6-24 Issue 01 Test Standards: 47 CFR Part 15.247 Effective Date 1st October 2023 DSS: Part 15 Spread Spectrum Transmitter NOTE: Certain tests were not performed based upon applicant's declarations. Certain other requirements are subject to applicant's declaration only and have not been tested/verified. For details refer to section 3 of this report. This report pertains to proprietary 2.4 GHz FHSS operation only. DEVIATIONS: No deviations have been applied. This certificate relates only to the unit tested as identified by a unique serial number and in the condition at the time it was tested. It does not relate to any other similar equipment and performance of the product before or after the test cannot be guaranteed. Whilst every effort is made to assure quality of testing, type tests are not exhaustive and although no non-conformances may be found, this doesn't exclude the possibility of unit not meeting the intentions of the standard or the requirements of the Federal Regulations, particularly under different conditions to those during testing. Any compliance statements are made reliant on (a) the application of the product and use of the assigned band being acceptable to the FCC and (b) the modes of operation as instructed to us by the Customer based on their specific knowledge of the application and functionality of the EUT. Statements of compliance, where measurements were made, do not include the measurement uncertainty. The measurement uncertainty, where stated, is the expanded uncertainty based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95%. Date of Test: 9th April 2024 to 15th April 2024 Test Engineer: Graham Blake Approved By: Radio Approvals Manager Customer Representative: ©2024 Kiwa Electrical Compliance REPORT NUMBER: 04-14508-6-24 Issue 01 ALL RIGHTS RESERVED Page 3 of 110 File Name: Sound Devices LLC.14508-6 Issue 01 QMF21J - Issue 05 - KEC Issue 04; 47 CFR Part 15C 2023 1 Contents 1 Contents ........................................................................................................................................................................... 3 2 Equipment under test (EUT) ............................................................................................................................................. 5 2.1 Equipment specification ........................................................................................................................................... 5 2.2 Configurations for testing ......................................................................................................................................... 6 2.3 Functional description .............................................................................................................................................. 6 2.4 Modes of operation .................................................................................................................................................. 7 2.5 Emissions configuration ........................................................................................................................................... 8 3 Summary of test results .................................................................................................................................................. 10 4 Specifications .................................................................................................................................................................. 11 4.1 Relevant standards .................................................................................................................................................. 11 4.2 Deviations ................................................................................................................................................................ 11 5 Tests, methods and results ....................................................…

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Test set-up photos J14508-4 1.1 AC power line conducted emissions EUT powered via DC port using a bench power supply 1.2 Radiated emissions 150 kHz - 30 MHz 1.3 Radiated emissions 30 MHz -1 GHz 1.4 Radiated emissions above 1 GHz

Test set-up photos for J14508-6 1.1 Radiated emissions 9 - 150 kHz 1.2 Radiated emissions 150 kHz - 30 MHz 1.3 Radiated emissions 30 MHz -1 GHz 1.4 Radiated emissions above 1 GHz 2.1 AC Conducted emissions EUT powered via DC port using a bench power supply