N2S-SC42X-235-1WStreamCaster 2x2 MIMO Radio

Rev 1/26/2023 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: May 7, 2026 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: N2S-SC42X-235-1W Silvus Technologies, Inc (“the applicant”) certifies that, as of the date of the filing of the application, Silvus Technologies, Inc is our designated U.S. agent for service of process for the above referenced FCC ID. Silvus Technologies, Inc accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Silvus Technologies, Inc accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Name: Silvus Technologies, Inc Address: 10990 Wilshire Blvd., #1500 Los Angeles, CA 90024 Contact Person: Steve Avila Email: [email protected] FRN: 0021690243 Sincerely, [Insert U.S. agent company name] Silvus Technologies, Inc (U.S. agent company nameprinted name)SteveAvila (U.S. agent company namesignature) [Insert applicant name] Silvus Technologies, Inc (Applicantprinted name)SteveAvila (Applicantsignature)

Silvus Technologies, Inc. Leading the MIMO Revolution 10990 Wilshire Blvd., Suite 1500 Los Angeles, California 90024 Ph 310-479-3333 May 7, 2026 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Ref: Attestation Statements Part 2.911(d)(5)(i) and Part 2.911(d)(5)(ii) Filing Re. KDB 986446 D01 FCC ID: N2S-SC42X-235-1W Dear Sir or Madam, Steve Avila (“the applicant”) certifies that 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. We also certify that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. We further attest that the equipment for which authorization is sought does not contain integrated Kaspersky cybersecurity and/or anti-virus software produced by Kaspersky Lab Inc. or any of its successors and assignees. If you have any questions, please contact us. Sincerely, Steve Avila Director of Legal Department Silvus Technologies, Inc. [email protected] Zoho Sign Document ID: 376054EC-TYLHUNFJKYNC2UDGR5DSS0YD48XFFTQPO9EIOVOQTBK

Silvus Technologies, Inc. Leading the MIMO Revolution 10990 Wilshire Blvd., Suite 1500 Los Angeles, California 90024 Ph 310-479-3333 FCC Agent Authorization Letter May 7, 2026 TUV SUD America Inc. 401 Edgewater Drive Ste 500 Wakefield MA 01880 Dear Sir or Madam, We, (Silvus Technologies Inc., 10990 Wilshire Blvd, Los Angeles, CA 90024), hereby authorize Rossana Sarai of TUV SUD America, 5945 Cabot Parkway, Alpharetta, GA 30005 to act as our agent in all matters relating to applications for equipment authorization, including the signing of all documents relating to these matters. Yours sincerely, Steve Avila Director of Legal Department Silvus Technologies Inc. [email protected] Zoho Sign Document ID: 376054EC-TYLHUNFJKYNC2UDGR5DSS0YD48XFFTQPO9EIOVOQTBK

Silvus Technologies, Inc. Leading the MIMO Revolution 10990 Wilshire Blvd., Suite 1500 Los Angeles, California 90024 Ph 310-479-3333 May 7, 2026 Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Confidentiality Request FCC ID: N2S-SC42X-235-1W Pursuant t o Sections 0.457(d)(1)(ii) and 0.459 of the Commission’s Rules, Silvus Technologies Inc, hereby r equests permanent c onfidential treatment of information accompanying this application as outlined below: •Schematics •Bill of Materials/Parts List •Block Diagrams •Theory of Operation Silvus Technologies Inc, also hereby r equests short-term confidential treatment of information accompanying this application as outlined below for a period of 180 days: •Internal Photos •External Photos •User Manual •Test Set-up Photographs The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant t o Rule 0.457(d)(1)(ii), disclosure of this Application and all accompanying materials will not be made before the date of the Grant f or this Application. Yours sincerely, Steve Avila Director of Legal Department Silvus Technologies, Inc. [email protected] Zoho Sign Document ID: 376054EC-TYLHUNFJKYNC2UDGR5DSS0YD48XFFTQPO9EIOVOQTBK

Silvus Technologies, Inc. Leading the MIMO Revolution 10990 Wilshire Blvd., Suite 1500 Los Angeles, California 90024 Ph 310-479-3333 July 18, 2024 RE: Professional Installation for Silvus Technologies Radio Models in SC4200EP & SC4400E series To Whom It May Concern: These products are designed for outdoor point to multipoint wireless. It is available through special distribution channels worldwide serving systems integrators in military, homeland security and commercial air to ground video markets. A professional installer with experience in extended Ethernet and RF cable deployment, tower/vehicle mounting, and Silvus SC4200EP & SC4400E radios system knowledge will be required to properly enable the equipment. Please contact me if there is any information you may need. Sincerely, Signature Cyrus S. Naim General Counsel Silvus Technologies, Inc. Tel.: (310) 773-5490 [email protected]

TÜV SÜD AMERICA INC 10040 Mesa Rim Road San Diego, CA 92121-2912 Phone: 858 678 1400 FAX: 858 546 0364 April 1, 2026 TUV SUD America CB 10 Centennial Drive FL2 Peabody, MA 01960 Attention: Director of Certification RE: Analysis of RF Exposure for Mobile and Portable Device per KDB 447498 D01 General RF Exposure Guidance v06 FCC ID: N2S-SC42X-235-1W 1. Limits Limits for General Population/Uncontrolled Exposure (Title 47 Subpart J §2.1091 and KDB 447498 D01 referring to limits under §1.1310) Frequency Range (MHz) Electric Field Strength (E) (V/m) Electric Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Time (minutes) 0.3 - 1.34 614 1.63 *(100) 30 1.34 - 30 824/f 2.19/f *(180/f 2 ) 30 30 - 300 27.5 0.073 0.2 30 300 - 1500 - - f/1500 30 1500 - 100,000 - - 1.0 30 f = frequency in MHz *Plane-wave equivalent power density 2. MPE Calculation Summary using a 20cm separation distance: Mode Output Power (dBm) Power Density at 20 cm (mW/cm 2 ) FCC Limit (mW/cm 2 ) ISM Band (2440MHz) 27.989 0.20115 1 TÜV SÜD AMERICA INC 10040 Mesa Rim Road San Diego, CA 92121-2912 Phone: 858 678 1400 FAX: 858 546 0364 3. Mobile MPE Calculation using a 20cm separation distance: Using Power Density formula: S= PG 4πR 2 where: S = power density P = power input to the antenna G = power gain of the antenna in the direction of interest relative to isotropic R = distance to the center of radiation of the antenna ISM Band at 2440 MHz at 20 cm Separation Distance: Maximum peak output power at antenna input terminal: 27.898 (dBm)* Maximum peak output power at antenna input terminal: 616.31 (mW) Maximum System Gain 2.15 (dBi) Maximum System Gain 1.641 (numeric) Prediction distance: 20 (cm) Source Based Time Average Duty Cycle: 100 (%) Prediction frequency: 2440 (MHz) MPE limit for uncontrolled exposure at prediction frequency: 1.000 (mW/cm 2 ) Power density at prediction frequency: 0.20115 (mW/cm 2 ) Power density at prediction frequency: 2.012 (W/m 2 ) Margin of Compliance: -6.96 (dB) Note(s): 1 If the EUT is used at less than 20 cm from the user, SAR evaluation is required. 2(*) The results shown apply to a 2×2 MIMO radio. The maximum peak output power at the antenna terminals represents the combined power delivered across both transmit ports Sincerely, Omar Castillo Name Authorized Signatory Title: Senior EMC / Wireless Test Engineer

TÜV SÜD America, Inc. 10040 Mesa Rim Road San Diego, CA 92121-2912 TÜV SÜD America, Inc. Rancho Bernardo Facility 16936 Via Del Campo San Diego, CA 92127 Phone: 858 678 1400 www.TÜV-sud-america.com TÜV SÜD RESPONSIBLE FOR NAME TITLE DATE SIGNATURE Authorized Signatory Ferdinand S. Custodio Senior EMC Test Engineer / Wireless Team Lead April 9, 2026 Signatures in this approval box have checked this document in line with the requirements of TÜV SÜD document control rules. EXECUTIVE SUMMARY A sample of this product was tested and found to be in compliance with FCC Part 15 Subpart C §15.247 Radio Testing of the Silvus Technologies, Inc. MIMO Radio Model: SC4240EP-235-EB In accordance with FCC Part 15 Subpart C §15.247 Prepared for: Silvus Technologies, Inc. 10990 Wilshire Blvd. #1500 Los Angeles, CA 90024 USA COMMERCIAL-IN-CONFIDENCE Date: April 2026 Document Number: 721017969C Issue 01 | Version Number: 01 A2LA Cert. No. 2955.13 DISCLAIMER AND COPYRIGHT This report has been prepared by TÜV SÜD America with all reasonable skill and care. The document is confidential to the potential Client and TÜV SÜD America. No part of this document may be reproduced without the prior written approval of TÜV SÜD America. ACCREDITATION Our A2LA Accreditation does not cover opinions and interpretations and any expressed are outside the scope of our A2LA Accreditation. FCC ID: N2S-SC42X-235-1W Report No. 721017969C COMMERCIAL-IN-CONFIDENCE Page 2 of 58 REPORT ON TEST REPORT NUMBER TEST REPORT DATE Radio Testing of the Silvus Technologies, Inc. Model: SC4240EP-235-EB 721017969C April 2026 PREPARED FOR Silvus Technologies, Inc. 10990 Wilshire Blvd. #1500 Los Angeles, CA 90024 USA CONTACT PERSON Dang Kha Sr. Compliance RF Test Engineer [email protected] +1 (310) 479-3333 PREPARED BY Omar Castillo Name Authorized Signatory Title: Senior EMC / Wireless Test Engineer APPROVED BY Ferdinand S. Custodio Name Authorized Signatory Title: EMC Test Engineer / Wireless Team Lead DATED April 9, 2026 FCC ID: N2S-SC42X-235-1W Report No. 721017969C COMMERCIAL-IN-CONFIDENCE Page 3 of 58 Revision History 721017969C Silvus Technologies, Inc. Model: SC4240EP-235-EB DATE OLD REVISION NEW REVISION REASON PAGES AFFECTED APPROVED BY April 9, 2026 ― Initial Release Ferdinand S. Custodio FCC ID: N2S-SC42X-235-1W Report No. 721017969C COMMERCIAL-IN-CONFIDENCE Page 4 of 58 CONTENTS Section Page No 1 REPORT SUMMARY ................................................................................................................... 5 1.2 Brief Summary of Results ............................................................................................................. 7 1.3 Product Information ...................................................................................................................... 8 1.4 EUT Test Configuration ................................................................................................................ 8 1.5 Deviations From The Standard ..................................................................................................... 9 1.6 Modification Record .................................................................................................................... 11 1.7 Test Methodology ....................................................................................................................... 11 1.8 Test Facility Location .................................................................................................................. 11 1.9 Test Facility Registration ............................................................................................................ 11 2 TEST DETAILS .......................................................................................................................... 13 2.1 Peak Output Power..................................................................................................................... 14 2.2 Conducted Emissions ................................................................................................................. 16 2.3 99% Emission Bandwidth ........................................................................................................... 20 2.4 Minimum 6 dB RF Bandwidth ..................................................................................................... 23 2.5 Out-Of-Band Emissions - Conducted ......................................................................................... 26 2.6 Band-Edge Compliance of RF Conducted Emissions ................................................................ 30 2.7 Radiated Spurious Emissions ..................................................................................................... 37 2.8 Power Spectral Density .............................................................................................................. 43 3 TEST EQUIPMENT USED ......................................................................................................... 47 3.1 Test Equipment Used ................................................................................................................. 48 3.2 Measurement Uncertainty .......................................................................................................... 49 4 DIAGRAM OF TEST SETUP ..................................................................................................... 53 4.1 Test Setup Diagram .................................................................................................................... 54 5 ACCREDITATION, DISCLAIMERS AND COPYRIGHT ............................................................ 57 FCC ID: N2S-SC42X-235-1W Report No. 721017969C COMMERCIAL-IN-CONFIDENCE Page 5 of 58 SECTION 1 REPORT SUMMARY Radio Testing of the Silvus Technologies, Inc. SC4240EP-235-EB FCC ID: N2S-SC42X-235-1W Report No. 721017969C COMMERCIAL-IN-CONFIDENCE Page 6 of 58 1.1 INTRODUCTION The information contained in thi…

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Overview Southwest Antennas Part # 1001-071 is a dual band, half wave dipole omni antenna with a low band frequency range of 2.15 to 2.5 GHz and a peak gain of 2.1 dBi, and a high band frequency of 4.4 to 5.9 GHz and a peak gain of 2.5 dBi. 1001-071 features an integrated 3" RF Gooseneck with black chrome non-rotating black chrome TNC(m) RF connector, which contributes to the improvement of RF link margin and overall antenna performance. Our proprietary antenna design and manufacturing process ensures optimum antenna RF performance. The non-rotating TNC(m) RF connector can be easily secured or removed from equipment in the field by a single gloved hand, no tools required. The Black Chrome finish keeps the RF connector from reflecting light or being easily spotted in the field. Antennas with integrated RF Goosenecks are ideal for handheld video receivers, portable radio systems, or any other mobile communication platform. The RF Gooseneck can be threaded through MOLLE gear or other tactical vest hardware for added security while moving. A rugged flat black fiberglass radome provides protection from damage and gives the antenna a low visibility finish. The integrated RF Gooseneck allows the antenna to bend and deflect away from impacts during outdoor operations. Features: Dual-Band Coverage 2.1 - 2.5 GHz & 4.4 - 5.9 GHz 50W Power Handling 2.15 to 2.5 dBi Gain Omni Radiation Pattern Integrated 3" RF Co-Axial Gooseneck Assembly Black Chrome Non-Rotating TNC(m) RF Connector Part # 1001-071 Dual-Band Omni Antenna, Half Wave Dipole, 2.1 - 2.5 / 4.4 - 5.9 GHz, 2.1 / 2.5 dBi, Integrated RF Coaxial Gooseneck Doc: 217-0001-415 Created: 07/15/2015 10939 Technology Place • San Diego, CA 92127 PH: (858) 277-3300 • Fax: (858) 571-6911 • Email: [email protected] southwestantennas.comPage 1 Antenna Specifications ParameterValueUnitsTolerance Antenna PatternOmni Antenna Frequency BandS & C Impedance50Ohms Frequency Range 12.1 – 2.5 2,100 – 2,500 GHz MHz Frequency Range 24.4 – 5.9 4,400 – 5,900 GHz MHz Maximum VSWR2:1Ratio Maximum Gain2.5dBi2.15 dBi Low Band Max Gain PolarizationVertical Low Band Horizontal (AZ) Beamwidth 360Degrees High Band Horizontal (AZ) Beamwidth 360Degrees Low Band Vertical (EL) Beamwidth 78Degrees2.1 - 2.5 GHz High Band Vertical (EL) Beamwidth 69Degrees4.4 - 5.9 GHz Ground Plane RequiredNo Radome MaterialFiberglass ColorFlat Black Spring or GooseneckGooseneck Gooseneck Length3.00 / 76.20inches / mm±.06" Gooseneck Diameter0.35 / 8.89inches / mm±.002" Part # 1001-071 Dual-Band Omni Antenna, Half Wave Dipole, 2.1 - 2.5 / 4.4 - 5.9 GHz, 2.1 / 2.5 dBi, Integrated RF Coaxial Gooseneck Doc: 217-0001-415 Created: 07/15/2015 10939 Technology Place • San Diego, CA 92127 PH: (858) 277-3300 • Fax: (858) 571-6911 • Email: [email protected] southwestantennas.comPage 2 ParameterValueUnitsTolerance Maximum Wind Velocity124 / 200mph / kph RF Connector TypeTNC(m) Non-Rotating RF Connector FeaturesBlack Chrome Product Height7.88 / 200.15inches / mm±.13" Product Diameter0.56 / 14.27inches / mm+.020" / -.000" Product Weight2.2 / 62.4oz / grams Part # 1001-071 Dual-Band Omni Antenna, Half Wave Dipole, 2.1 - 2.5 / 4.4 - 5.9 GHz, 2.1 / 2.5 dBi, Integrated RF Coaxial Gooseneck Doc: 217-0001-415 Created: 07/15/2015 10939 Technology Place • San Diego, CA 92127 PH: (858) 277-3300 • Fax: (858) 571-6911 • Email: [email protected] southwestantennas.comPage 3 Elevation Pattern Blue: S-Band, Green: C-Band Part # 1001-071 Dual-Band Omni Antenna, Half Wave Dipole, 2.1 - 2.5 / 4.4 - 5.9 GHz, 2.1 / 2.5 dBi, Integrated RF Coaxial Gooseneck Doc: 217-0001-415 Created: 07/15/2015 10939 Technology Place • San Diego, CA 92127 PH: (858) 277-3300 • Fax: (858) 571-6911 • Email: [email protected] southwestantennas.comPage 4 Engineering Drawing All dimensions are in inches Part # 1001-071 Dual-Band Omni Antenna, Half Wave Dipole, 2.1 - 2.5 / 4.4 - 5.9 GHz, 2.1 / 2.5 dBi, Integrated RF Coaxial Gooseneck Doc: 217-0001-415 Created: 07/15/2015 10939 Technology Place • San Diego, CA 92127 PH: (858) 277-3300 • Fax: (858) 571-6911 • Email: [email protected] southwestantennas.comPage 5