2BDAA-DATARADIOThe DATARADIO is a wireless modem that will provide high speed data link for simple and reliable data trans-receive.

Covered Equipment Certification Attestation Letter 8/26/2025 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2BDAA-DATARADIO MEDHA SERVO DRIVES PRIVATE LIMITED (“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. This includes certifying that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. MEDHA SERVO DRIVES PVT LTD, (“the applicant”) certifies 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. Signed: Printed name: Gopathi Uday Title: Assistant Manager Company Name: M/s Medha Servo Drives Private Limited Date: 8/26/2025

U.S. Agent Designation for Service of Process - Certification Attestation Letter August 26, 2025 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2BDAA-DATARADIO Per section 2.911(d)(7) of the FCC rules, Albatros North America, Inc (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. Designated agent* for service of process: Company Name: Albatros North America, Inc Physical U.S. Company Address: 6 McCrea Hill Rd, Ballston Spa, NY 12020, United States Agent name: Samir Nirula Agent Email Address: [email protected] FRN: 0035270404 The above contact person accepts the obligation for service of process. The applicant 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. Applicant Signed:Designated Agent Signed: (Required, if different to Applicant): Signed:Signed: Printed name:Gopathi UdayPrinted Name:Samir Nirula Title:Assistant ManagerTitle:Director Company Name: Medha Servo Drives Pvt. Ltd., Company Name: Albatros North America, Inc Date:August 26, 2025Date:August 26, 2025 * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process.

08/26/2025 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 AUTHORITY TO ACT AS AGENT – FCC On our behalf, I appoint M/s Nemko North America, Inc. to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in FCC regulations will have affixed to it a label identical to that submitted for approval with this application. In signing this letter, Applicant certifies that neither the applicant nor any party to the application is not subject to a denial of Federal benefits, that include FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. § 862 because of a conviction for possession or distribution of a controlled substance. See 47 CFR 1.2002(b) for the definition of a "party" for these purposes. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko North America Inc., still resides still resides with us. Sincerely, Printed Name: Gopathi Uday Assistant Manager Medha Servo Drives Pvt. Ltd., Hyderabad, India.

August 26, 2025 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY – FCC FCC ID: 2BDAA-DATARADIO Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. We also request short-term confidentiality on certain exhibits until the intended date of marketing as outlined below. We request the exhibits be withheld from public view for a period of 180 days. We attest marketing of the product will only commence after the period of short-term confidentiality expires, or if marketing is to commence before the requested number of days listed above, the grantee will inform Nemko to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. Exhibit Type of Confidentiality Requested Block Diagrams☐ Permanent ☑ Short Term External Photos------------------ ☑ Short Term Internal Photos ☐ Permanent*☑ Short Term Operation Description☐ Permanent ☑Short Term Parts List & Placement/BOM ☑ Permanent☐ Short Term Tune-Up Procedure ☑ Permanent☐ Short Term Schematic Diagrams ☑ Permanent☐ Short Term Test Setup Photos------------------ ☑ Short Term User’s Manual ☐ Permanent*☑ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note: any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed: Printed name: Gopathi Uday Title: Assistant Manager Company Name: Medha Servo Drives Pvt. Ltd., Hyderabad, India.

Ref: MEDHA:FCC:0822:2025 Date: 26 th August 2025 To, Nemko India (Test Lab) Pvt Ltd. Plot No. 193, Sector 68, IMT Faridabad-121004. Sub: Model difference letter-Reg. Dear Sir, In reference to above subject, we here by bring to your kind notice that, We are obtaining FCC certification for medha make Radio Modems. Specifically, we are pursuing certification for two model variants: 1.Model MDR4047 (Frequency range: 406.125MHz to 469.975 MHz) 2.Model Variant MDR4243 (Frequency range: 420.000MHz to 430Mhz). Both of these models share identical parameters, except for the frequency specifications. The technical details and other features of these modems remain consistent. So, we requesting you to look forward to continue certification. Thanking You Yours sincerely, For Medha Servo drive Pvt. Ltd., Gopathi Uday Asst Manager

Ref: MEDHA:FCC:0832:2025 Date: 26 th August 2025 Nemko North America, Inc. 303 River Road Ottawa, Ontaria, Canada K1V 1H2 Dear Sir/Madam, Subject: Extend Frequencies Justification Original Application FCC ID: 2BDAA-DATARADIO This Digital radio was designed to operate in the frequency bands 406.125-469.975 MHz; To aid equipment authorization in other countries that accepts the United States FCC Grant for Certification, Medha Servo Drives Private Limited is requesting that the FCC list the frequencies 406.125-468.975 MHz under FCC Rule Parts 90 and the Grantee code “2BDAA”. For the FCC’s Rule Part 90 applications, this radio is used in systems by Indian Railways or Railway communication systems, as indicated in the table below. Equipment programming is the responsibility of Authorized Service Personal. Also, the radio complies with 47 CFR Part 90.203 (e), in that the operator cannot directly program the transmit frequencies using the normally accessible external controls. Per the FCC’s KDB634817 guidance, as an alternative to listing the exact frequencies, we acknowledge that it’s a violation of the FCC Rules if this device operates on unauthorized frequencies. Frequency Range (MHz) Part 22Part 74Part 80Part 90Federal 406.125 – 469.975 X Thanking you, For Medha Servo Drives Pvt Ltd., Gopathi Uday Asst Manager

Ref: MEDHA:FCC:0836:2025 Date: 28 th August 2025 Nemko North America, Inc. 303 River Road Ottawa, Ontaria, Canada K1V 1H2 Dear Sir/Madam, Subject: Extend Frequencies Justification Original Application FCC ID: 2BDAA-DATARADIO We, Medha Servo Drives Private Limited declares that the Digital radio meets 47CFR Section FCC part 90. This Digital radio is support 12.5 KHz and 25 KHz for FSK digital modulation; Emission Designator: F1D for data modes, also this Digital radio designed in accordance with FCC parts 90 and 15B requirement, will at least support 9600 bits per second in a 12.5 KHz channel bandwidth, and 19200 bits per second in a 25 KHz channel bandwidth. We, Medha Servo Drives Private Limited declares that the Digital radio capable of operating from frequency range 406.125-469.975 MHz, meets 47CFR sections 90.203(j) (4) and 90.203(j)(5) Spectrum efficiency requirements Thanking you, For Medha Servo Drives Pvt Ltd., Gopathi Uday Asst Manager

NAME PLATE FOR DATARADIO MODEL NO : MDR4047 NAME PLATE FOR DATARADIO MODEL NO : MDR4243

Report number: SR/2507005 Issue Date: 10.03.2026 Nemko India (Test Lab) Pvt Ltd CIN: U74999HR2016FTC065033 Plot No. 193, Sec -68, IMT Faridabad-121004, Haryana EMAIL: [email protected] Page No. 1 of 7 RF EXPOSURE EVALUATION REPORT Report Number. ................................... : SR/2507005 Date of issue ........................................ : 10.03.2026 Total number of pages ......................... : 7 Sample ID FCC/2310003 Testing Laboratory ................................. : Nemko India (Test Lab) Pvt. Ltd. Address ................................................ : Plot no 193, IMT, Sector 68, Faridabad-121004, Haryana, India Applicants / Customers Name and Address MEDHA SERVO DRIVES PVT.LTD P-4/5B, IDA NACHARAM, HYDERABAD, TELANGANA, 500076, INDIA Manufacturer’s name ............................ : Address .................................................. : MEDHA SERVO DRIVES PVT.LTD UNIT - III: PLOT NO 8/A, RAVIRYALA VILLAGE, MAHESWARAM MANDAL, RANGA REDDY DISTRICT –501359, TELANGANA, INDIA. UNIT - I: JODIMETLA CROSS ROADS, KORREMULA, GHATKESAR, HYDERABAD - 500088, TELANGANA, INDIA. Standard Test Method ......................... : §1.1310 and §2.1091 Test item description ........................... : DATARADIO Trademark ........................................... : Model/Type reference ......................... : MDR4047 (Main Model) MDR4243 (Series Model) Date of receipt of test item 09.12.2024 Remarks: • The results of this report relate only to the item(s) tested. • The testing laboratory is responsible for all the information provided in the report, except the information provided by the customer/manufacturer, wherever applicable. • The report may be reproduced in full. Partial reproduction may only be made with the written consent of Nemko India. • The report is released by Nemko India in pdf format only. Printed copies of this report are uncontrolled including scans of colored prints. • This report is digitally signed on first page, doesn’t required signature on each page. Tested by: Approved by / Authorized Signatory: Issued by: Dinesh Dhawan/Sr. Testing Engineer Kavita Dagar/ Lab Manager -EMC&RF Shubham Gupta/ Project Engineer Report number: SR/2507005 Issue Date: 10.03.2026 Page No. 2 of 7 Contents Page No. 1. Test Summary 3 2. General Information 4 3. General Description of EUT 5 4. FCC Maximum Permissible Exposure (MPE) 6 4.1 Introduction 6 4.2 Limit 6 4.3 Classification of the assessment methods 6 4.4 Calculated Data 7 4.5 Result 9 Report number: SR/2507005 Issue Date: 10.03.2026 Page No. 3 of 7 1. Test Summary Sr. No Test Parameter Test Requirement Verdict Remarks 1 RF EXPOSURE EVALUATION FCC 1.1310 & 2.1091 EUT Complies the assessment -- Report number: SR/2507005 Issue Date: 10.03.2026 Page No. 4 of 7 2. General Information EUT Peripheral List No. Equipment Manufacturer Model No. Serial No. Power cord Remark -- -- -- -- -- -- -- Test Peripheral List No. Equipment Manufacturer Model No. Serial No. Power cord Remark 1 Laptop Dell Latitude 3480 -- N/A N/A Report number: SR/2507005 Issue Date: 10.03.2026 Page No. 5 of 7 3. General Description of EUT – based on the information provided by manufacturer. Manufacturer Name: MEDHA SERVO DRIVES PVT. LTD Manufacturer address: UNIT - III: PLOT NO 8/A, RAVIRYALA VILLAGE, MAHESWARAM MANDAL, RANGA REDDY DISTRICT –501359, TELANGANA, INDIA. UNIT - I: JODIMETLA CROSS ROADS, KORREMULA, GHATKESAR, HYDERABAD - 500088, TELANGANA, INDIA. Product: DATARADIO Main Model: MDR4047 Trademark: Serial Number: 2067 Hardware Number: 6.02.2 Software Number: 6.02.2 Frequency Band/ Supported Bands: 406.125 MHz to 469.975 MHz Rating: 24 VDC RF power Max (W) 10 W Antenna Gain 2.0 dBi FCC ID: 2BDAA-DATARADIO Federal Registration Number (FRN): 0034384974 Report number: SR/2507005 Issue Date: 10.03.2026 Page No. 6 of 7 4. FCC Maximum Permissible Exposure (MPE) 4.1 Introduction According to subpart §1.1310, 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 level in excess of the Commission’s guidelines. 4.2 Limits Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) Frequency Range (MHz) E-field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Limits for Occupational/Controlled Exposure 0.3-3.0 614 1.63 *100 3.0-30 1842/f 4.89/f *(900/f 2 ) 30-300 61.4 0.163 1.0 300-1500 -- -- f/300 1500-100,000 -- -- 5 f = frequency in MHz. * = Plane-wave equivalent power density. 4.3 Classification of the assessment methods Measurements at separation distances down to 200 cm are acceptable dependent on the measurement frequency and measurement equipment. Warning statement by manufacturer (in user manual) for keeping 200 cm separation distance – ‘People should not be in front of the antenna within 200 cm distance when the transmitter is operating.’’ Electric field strength or magnetic field strength in the far-field to the reference field calculated by the far-field Equation: Power density (s) is (in appropriate units, e.g. mW/cm 2 ) Where, P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); 2 4R PG S  = Report number: SR/2507005 Issue Date: 10.03.2026 Page No. 7 of 7 4.4 Calculated Data: Antenna Gain: 2.0 dBi (declared by manufacturer). Channel and frequency Maximum Conducted Power (dBm) Antenna Gain (dBi) Evaluation Distance (cm) Power density (S) (mW/cm 2 ) Power density Limit (mW/cm 2 ) Verdict 406.125 MHz 40.34 2.0 200 0.034 1.35 Pass 435.500 MHz 40.53 2.0 200 0.036 1.45 Pass 469.975 MHz 40.92 2.0 200 0.039 1.57 Pass Note: Maximum Conducted Power are taken from the report no. FCC/2310003 dated August 13, 2025 issued by Nemko India (Test Lab) Pvt. Ltd., Plot no 193, IMT, Sector 68, Faridabad-121004, H…

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Report number: FCC/2310003 Page 1 of 33 RADIO TEST REPORT Type of assessment: Final product testing Applicant: Product: MEDHA SERVO DRIVES PRIVATE LIMITED DATARADIO Model: Model variant(s): MDR4047 MDR4243 FCC ID: Federal Registration Number (FRN): 2BDAA-DATARADIO 0034384974 Specifications:  FCC 47 CFR Part 90, Subpart I Date of issue: March 10, 2026 Dinesh Dhawan Tested by Signature Kavita Dagar Reviewed by Shubham Gupta Signature Issued by Signature Report number: FCC/2310003 Page 2 of 33 Lab locations Company name Nemko India (Test Lab) Pvt. Ltd. Plot no 193, IMT, Sector 68, Faridabad-121004, Haryana, India Limits of responsibility Note that the results contained in this report relate only to the items tested and were obtained in the period between the date of initial receipt of samples and the date of issue of the report. This test report has been completed in accordance with the requirements of ISO/IEC 17025. All results contained in this report are within Nemko India ISO/IEC 17025 accreditation. The test facility is accredited by A2LA with certificate no. 6933.01 FCC Designation number IN1345. Report number: FCC/2310003 Page 3 of 33 Table of Contents Table of Contents ......................................................................................................................................................................................................... 3 Report summary ................................................................................................................................................................................. 4 1.1 Test specifications .................................................................................................................................................................................................... 4 1.2 Test methods ............................................................................................................................................................................................................ 4 1.3 Exclusions ................................................................................................................................................................................................................. 4 1.4 Statement of compliance .......................................................................................................................................................................................... 4 1.5 Test report revision history ....................................................................................................................................................................................... 4 Engineering considerations ................................................................................................................................................................. 5 2.1 Modifications incorporated in the EUT for compliance ............................................................................................................................................ 5 2.2 Technical judgment .................................................................................................................................................................................................. 5 2.3 Deviations from laboratory tests procedures ........................................................................................................................................................... 5 Test conditions ................................................................................................................................................................................... 6 3.1 Atmospheric conditions ............................................................................................................................................................................................ 6 3.2 Power supply range .................................................................................................................................................................................................. 6 Measurement uncertainty .................................................................................................................................................................. 7 4.1 Uncertainty of measurement ................................................................................................................................................................................... 7 Information provided by the applicant ................................................................................................................................................ 8 5.1 Disclaimer ................................................................................................................................................................................................................. 8 5.2 Applicant/Manufacture ............................................................................................................................................................................................ 8 5.3 EUT information ....................................................................................................................................................................................................... 8 5.4 Technical information ............................................................................................................................................................................................... 9 5.5 EUT setup details ...................................................................................................................................................................................................... 9 Summary of test results ............................................................................................................................…

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