OQW-STR1900STR-1900 Series Land Mobile Data Radios

Applicant FRN: 0020047247

305 East Dr Ste D, Melbourne, FL 32904 [email protected] www.summationresearch.com (321) 254-2580 3/25/2026 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 FCC ID: OQW-STR1900 Model: STR-1920 Spectrum Efficiency Statement Pursuant to the requirements of 90.203(j)(5) of the Commission’s rules, we hereby certify that the above-listed data transmission equipment is capable of supporting a minimum data rate of 4800 bits per second per 6.25 kHz of channel bandwidth. Dated: March 25, 2026 Name: Todd Gross Title: President On behalf of: Summation Research, Inc.

General Manager, International Sales Department

305 East Dr Ste D, Melbourne, FL 32904 [email protected] www.summationresearch.com (321) 254-2580 Label and Label Location Exhibit Model Number: STR-1920 FCC ID: OQW-STR1900 IC: 9110A-STR1900 Applicant: Summation Research, Inc. Date: March 31, 2026 1. Label Information The product will bear a printed label showing the required regulatory identifiers. The label includes: • FCC ID: OQW-STR1900 • IC: 9110A-STR1900 • Model Number: STR-1920 • SRI Part Number: 70-1900-00 • Serial Number/Bar Code Sample Label Format 2. Label Location The label is located on the bottom of the device. 305 East Dr Ste D, Melbourne, FL 32904 [email protected] www.summationresearch.com (321) 254-2580 Label Location Photo 3. Permanence of Label The label is: o Adhesive label (durable under normal use, per UL 969 or equivalent) o Visible to the user under normal operating conditions

www.nemko.com Nemko Canada Inc., a testing laboratory, is accredited by ANSI National Accreditation Board (ANAB). The test results included in this report are within the scope of this accreditation. The ANAB symbol is an official symbol of the ANSI National Accreditation Board, used under licence. FCC and ISED RSS-102– MPE Calculation; Date: January 2026 RF Exposure Compliance – MPE Calculation Report C h o o s e S c a n d i n a v i a n t r u s t Applicant company: Summation Research, Inc. Model number (HVIN): STR-1920 Model name (PMN): UHF Non-Broadcast Radio FCC Identification: FCC ID: OQW-STR1900 ISED certification number: IC: 9110A-STR1900 Product type: Mobile or Fixed Device Device category Professional Device for Occupational/Controlled Exposure Date of issue: April 17, 2026 Compliance Specifications: FCC 47 CFR Part 1 Subpart I, §§1.1307, 1.1310 FCC 47 CFR Part 2 Subpart J, §§2.1091, 2.1093 FCC KDB 447498 D01 General RF Exposure Guidance v06 FCC KDB 865664 D01 RF Exposure Procedures and Equipment Authorization Policies ISED Canada RSS-102 Issue 6 December 15, 2023 MPE calculation report Product info: FCC ID: OQW-STR1900 IC: 9110A-STR1900 Model: STR-1920 Page 2 of 7 Test locations of Nemko Canada Inc. Ottawa site Montréal site GTA Cambridge site Facility address 303 River Road Ottawa, Ontario Canada K1V 1H2 Tel: +1 613 737 9680 Fax: +1 613 737 9691 292 Labrosse Avenue Pointe-Claire, Québec Canada H9R 5L8 Tel: +1 514 694 2684 Fax: +1 514 694 3528 1-130 Saltsman Drive Cambridge, Ontario Canada N3E 0B2 Tel: +1 519 650 4811 Test site identifier - FCC CA2040 CA2041 CA0101 Test site identifier – ISED Canada 2040A-4 2040G-5 24676 ANAB File Number AT-3195 AT-3193 AT-3194 Andrey Adelberg Senior EMC/Wireless Specialist Prepared by Signature Limits of responsibility The results presented in this report apply solely to the specific device model tested and are valid only for the operating conditions and installation requirements specified herein. Testing was conducted in accordance with ISO/IEC 17025:2017 requirements, and all results fall within the scope of Nemko Canada's accreditation. This MPE evaluation is based on the maximum power levels and operating conditions specified. Any modifications to the device hardware, software, or installation that could affect RF output power or antenna characteristics may invalidate this compliance demonstration. Copyright notification This report may be reproduced by the applicant in its entirety for regulatory submission and internal use. Any use of this report by third parties, including reliance on its contents or decisions made based on it, is solely at the risk of those third parties. Nemko Canada Inc. assumes no responsibility for any damages incurred by third parties as a result of actions taken based on this report. © Nemko Canada Inc. All rights reserved. MPE calculation report Product info: FCC ID: OQW-STR1900 IC: 9110A-STR1900 Model: STR-1920 Page 3 of 7 1. Executive Summary This report presents the Maximum Permissible Exposure (MPE) analysis to demonstrate compliance with FCC and ISED RF exposure requirements. The evaluation considers both single transmitter operation and simultaneous multi-transmitter scenarios where applicable. 2. Key Findings Compliance status Complies Critical separation distances 80 cm Special conditions or limitations Occupational Use Only MPE calculation report Product info: FCC ID: OQW-STR1900 IC: 9110A-STR1900 Model: STR-1920 Page 4 of 7 MPE calculations for stand-alone transmission Device Classification Requirements Portable Device Definition (§2.1093) Devices designed for use by a person where the radiating structure is within 20 cm of the user's body require SAR evaluation rather than MPE calculation. Mobile Device Definition Devices installed in vehicles or with permanently installed antennas may use MPE calculations if minimum separation distances can be established. Fixed/Base Station Definition Stationary transmitters with controlled access to antenna locations may use MPE calculations for both occupational and general population exposure scenarios. 3. References, definitions and limits for FCC FCC §2.1091(d) (2) For operations within the frequency range of 300 kHz and 6 GHz (inclusive), the limits for maximum permissible exposure (MPE), derived from whole-body SAR limits and listed in Table 1 in paragraph (e)(1) of this section, may be used instead of whole-body SAR limits as set forth in paragraphs (a) through (c) of this section to evaluate the environmental impact of human exposure to RF radiation as specified in §1.1307(b) of this part, except for portable devices as defined in §2.1093 of this chapter as these evaluations shall be performed according to the SAR provisions in §2.1093. Table 1: §1.1310(e)(1)—Power Density Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Power density (mW/cm 2 ) Averaging time (minutes) (i) Limits for Occupational/Controlled Exposure 0.3–3.0 *(100) ≤6 3.0–30 *(900 / f 2 ) <6 30–300 1.0 <6 300–1500 f / 300 <6 1500–100000 5 <6 (ii) Limits for General Population/Uncontrolled Exposure 0.3–1.34 *(100) <30 1.34–30 *(180 / f 2 ) <30 30–300 0.2 <30 300–1500 f / 1500 <30 1500–100000 1.0 <30 Notes: f = frequency in MHz. * = Plane-wave equivalent power density. MPE calculation report Product info: FCC ID: OQW-STR1900 IC: 9110A-STR1900 Model: STR-1920 Page 5 of 7 4. References, definitions and limits for ISED RSS-102 Section 5.3.2 The power density reference levels, and associated reference period for devices employed by the general public (uncontrolled environment) and controlled-use devices (controlled environment) are specified in table below. Note that the power density limits specified in this table apply to whole body exposure conditions. Table 2: RSS-102— Power density limits Frequency range (MHz) Power density (W/m 2 ) Power density (mW/cm 2 ) Reference Period (minutes) Limits for controlled-use devices (controlled environment) 10–20 10 1 6 20–48 44.72 / ƒ 0.5 …

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www.nemko.com Nemko Canada Inc., a testing laboratory, is accredited by ANSI National Accreditation Board (ANAB). The tests included in this report are within the scope of this accreditation. The ANAB symbol is an official symbol of the ANSI National Accreditation Board, used under licence. ANAB File Number: AT-3195 (Ottawa); AT-3193 (Pointe-Claire); AT-3194 (Cambridge) FCC 90-I, RSS-119 Issue 12; Date: February 05, 2026 C h o o s e S c a n d i n a v i a n t r u s t RADIO TEST REPORT Report ID: Project number: REP150724 PRJ0092231 Type of assessment: Final product testing Applicant: Summation Research, Inc. Product: Model (HVIN): STR-1900 Series Land Mobile Data Radios STR-1920 FCC ID: ISED certification number: OQW-STR1900 9110A-STR1900 Specifications:  FCC 47 CFR Part 90, Subpart I  RSS-119 Issue 12, July 2025 Date of issue: April 17, 2026 Alvin Liu, EMC/RF Specialist Tested by Signature Dhara Patel, EMC/RF Specialist Reviewed by Signature Report reference ID: REP150724 Page 2 of 49 Lab locations Company name Nemko Canada Inc. Facilities Ottawa site: 303 River Road, Ottawa, ON, Canada, K1V 1H2 Tel: +1 613 737 9680 Test site registration number: CA2040 Montréal site: 292 Labrosse Avenue, Pointe-Claire, QC, Canada, H9R 5L8 Tel: +1 514 694 2684 Test site registration number: CA2041 Cambridge site: 1-130 Saltsman Drive, Cambridge, ON, Canada, N3E 0B2 Tel: +1 519 650 4811 Test site registration number: CA0101 Website www.nemko.com 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 Canada’s ISO/IEC 17025 accreditation. Copyright notification Nemko Canada Inc. authorizes the applicant to reproduce this report provided it is reproduced in its entirety and for use by the company’s employees only. Any use which a third party makes of this report, or any reliance on or decisions to be made based on it, are the responsibility of such third parties. Nemko Canada Inc. accepts no responsibility for damages, if any, suffered by any third party as a result of decisions made or actions based on this report. © Nemko Canada Inc. Report reference ID: REP150724 Page 3 of 49 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 Model variant declaration ........................................................................................................................................................................................ 5 2.4 Deviations from laboratory tests procedures ........................................................................................................................................................... 5 Test conditions ................................................................................................................................................................................... 6 3.1 Atmospheric conditions ............................................................................................................................................................................................ 6 3.2 Power supply range .................................................................................................................................................................................................. 6 Information provided by the applicant ................................................................................................................................................ 7 4.1 Disclaimer ...................................................................................................................................................................................…

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