IPH-B4281Portable Digital Transceiver

Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: October 08, 2025 Ref: Attestation Statements Part 2.903, Part 2.911(d)(5) FCC ID: IPH-B4281 FRN: 0005088588 Garmin International, Inc., (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited fr om receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Garmin International, Inc., (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as a n entit y producing “covered” equipment. Garmin International, Inc., (“the applicant”) certifies that, the device does not have cybersecurity and/or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, identified on the Covered List installed on the device, nor will it be installed by the applicant after certification. Sincerely, Ben Karsak Manager Compliance Engineering Garmin International, Inc.

Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: September-5-2025 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: IPH-B4281 Garmin International, Inc., Garmin certifies that, as of the date of t he filing of the application, Garmin International, Inc. is our designated U.S. agent for service of process for t he above referenced FCC ID. Garmin International, Inc., accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or t he conclusion of any Commission-related proceeding involving the equipment. Garmin International, Inc. accepts, as of the date of t he 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: FRN: 0005088588 Name: Garmin International, Inc. Address: 1200 East 151 st Street, O lathe, Kansas, 66062 Contact Person: Ben Karsak Tel.: 913-440-1946 Email: [email protected] Sincerely, Ben Karsak Manager Compliance Engineering

REQUEST FOR CONFIDENTIALITY Date: 10 October 2025 Applicant: Garmin International Subject: Confidentiality Request for FCC ID: IPH-B4281 IC: 1792A-B4281 Pursuant to FCC 47 CFR 0.457(d) and 0.459, and IC RSP-100 Section 12.4, we request that a part of the FCC and ISED application be held confidential. Type Of Confidentiality Requested Exhibit ☐Short Term☒Permanent☐Not Provided Block Diagrams ☐Short Term☒Permanent☐Not Provided Schematics ☐Short Term☒Permanent☐Not Provided Operational Description/ Theory of Operation ☐Short Term☐Permanent☒Not Provided Parts List & Placement/BOM ☐Short Term☒Permanent☐Not Provided Tune-Up Procedure ☒Short Term☐Permanent☐Not Provided Test Setup Photos ☒Short Term☐Permanent☐Not Provided User’s Manual(s) ☒Short Term☐Permanent☐Not Provided External Photos ☒Short Term☐Permanent☐Not Provided Internal Photos Garmin International has spent a substantial effort in developing this product and it is one of the first of its kind in the industry. Having the subject information easily available to "competition" would negate the advantage we have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality: Garmin requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality (if applicable): The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Sincerely, Brodie Halbfoster Compliance Engineer

April 16, 2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Innovation, Science and Economic Development Canada Certification and Engineering Bureau 3701 Carling Avenue PO Box 11490, Station H Ottawa, Ontario, Canada K2H 8S2 To Whom It May Concern: Pursuant to 47 CFR 2.911, Garmin International, Inc. (Garmin) has authorized the following Garmin International Associates to act on Garmin's behalf for the sole and express purpose of processing applications to the Federal Communication Commission (FCC) and Innovation, Science and Economic Development Canada (ISED) for equipment authorization or certification. Mr. Niklas Haydon, Compliance Engineering Team Lead Mr. Mitchell Phillipi, Compliance Engineering Team Lead Mr. William Pertner, Compliance Engineering Team Lead Mr. Jay Everett, Compliance Engineering Team Lead Mr. Richard Kockelkoren, Compliance Engineer Mr. Mike Moranha, Compliance Engineer Ms. Pam Sequeira, Compliance Engineer Mr. Jeffrey Hailey, Compliance Engineer Mr. Dan Irish, Compliance Engineer Ms. Sara Jones, Design Certification Engineer Mr. Jacky Yeung, Compliance Engineer Mr. Hayden Pernia, Compliance Engineer Mr. Jeremiah Darden, Compliance Engineer Mr. Henry Lin, Compliance Engineer Ms. Claire Fryman, Compliance Engineer Mr. Rick Jankovics, Compliance Engineer Mr. Brodie Halbfoster, Compliance Engineer Mr. Jonathan Shafer, Design Certification Engineer As such, the Garmin Associates listed above are authorized to: 1) sign Form 731, 2) sign letters of application, 3) request confidentiality, and 4) exchange data and information with the FCC, IC and/or authorized TCBs on behalf of Garmin. In addition, these individuals shall be considered "authorized individuals" to act on Garmin's behalf where an "authorized individual's" attestation is necessary or preferred. This authorization remains in effect until notified to the contrary by Garmin. Sincerely, Ben Karsak Manager Compliance Engineering Garmin International, Inc.

E-Label Information A.The following specific instructions are provided in the Quick Start Manual that ships with the device. a.Label viewing directions are found in the user manual (outlined here for reference) and available online at www.garmin.com b.Getting the Owner's Manual The owner's manual includes instructions for using device features and accessing regulatory information Go to www.garmin.com/manuals/B04281 B.The following are the specific instructions provided in the owner’s manual that is provided at www.garmin.com/manuals: a.Device Information b.Viewing Regulatory and Compliance information. C.The above information is programmed by Garmin in such a manner that third-parties cannot modify it. a.“No special accessories or supplemental plug-ins (e.g., installation of a SIM/USIM card) are required to access the information. Access to the information is provided without special codes, accessories, or permissions beyond the normal security protection to unlock the screen, sign-in page, or overall product access.” b.Electronically displayed information is clearly legible without the aid of magnification. D.The above M/N, FCC ID, and IC numbers can be found printed on the product packaging.

© 2025 RF Exposure Lab, LLC This report shall not be reproduced except in full without the written approval of RF Exposure Lab, LLC. 802 N. Twin Oaks Valley Road, Suite 105 • San Marcos, CA 92069 • U.S.A. TEL (760) 471-2100 • FAX (760) 471-2121 http://www.rfexposurelab.com CERTIFICATE OF COMPLIANCE SAR EVALUATION Garmin International, Inc. Dates of Test: July 1-2, 2025 1200 E. 151 st Street Test Report Number: SAR.20250701 Olathe, KS 66062 Revision D Lab Designation Number: US1195 This wireless mobile and/or portable device has been shown to be compliant for localized specific absorption rate (SAR) for controlled environment/occupational limits specified in ANSI C95.1 – 1999 Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz, ANSI C95.3 – 2002 Recommended Practice for the Measurement of Potentially Hazardous Electromagnetic Fields, IEEE Std.1528 – 2013 Recommended Practice and had been tested in accordance with the measurement procedures specified in KDB 447498 and KDB 248227 (See test report). I attest to the accuracy of the data. All measurements were performed by myself or were made under my supervision and are correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the qualifications of all persons taking them. RF Exposure Lab, LLC certifies that no party to this application is subject to a denial of Federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). Jay M. Moulton Vice President Testing Cert. # 2387.01 FCC ID: IPH-B4281 Model(s): B04281 Marketing Name: B04281 Test Sample: Engineering Unit Same as Production Serial Number: Eng 1 Equipment Type: Portable Digital Transceiver Classification: Portable Transmitter Next to Body TX Frequency Range: 2412 – 2462 MHz; 5745 – 5825 MHz Frequency Tolerance: ± 2.5 ppm Maximum RF Output: 2450 MHz (b) – 16.50 dBm, 2450 MHz (g) – 16.50 dBm, 2450 MHz (n20) – 16.50 dBm, 5800 MHz (a) – 16.50 dBm, 5800 MHz (n20/40) – 16.00 dBm, 5800 MHz (ac80) – 16.00 dBm, 2450 MHz (BT) – 6.00 dBm Conducted Signal Modulation: DSSS, OFDM, GFSK Antenna Type: Internal Antenna (2.4 GHz Inverted F 5.24 dBi Gain, 5 GHz Loop 0.08 dBi Gain) Application Type: Certification FCC Rule Parts: Part 2, 15C, 15E KDB Test Methodology: KDB 447498 D01 v06, KDB 248227 v02r02 Maximum SAR Value: 1.29 W/kg Reported Maximum Simultaneous Value: 1.44 W/kg Reported Separation Distance to Probe: 0 mm Report Number: SAR.20250701 © 2025 RF Exposure Lab, LLC Page 2 of 77 This report shall not be reproduced except in full without the written approval of RF Exposure Lab, LLC. Table of Contents 1. Introduction ................................................................................................................................................ 4 SAR Definition [5] .......................................................................................................................................... 5 2. SAR Measurement Setup .......................................................................................................................... 6 Robotic System ............................................................................................................................................. 6 System Hardware .......................................................................................................................................... 6 System Electronics ........................................................................................................................................ 7 Probe Measurement System ......................................................................................................................... 7 3. Probe and Dipole Calibration ................................................................................................................... 14 4. Phantom & Simulating Tissue Specifications ........................................................................................... 15 Head Simulating Mixture Characterization ................................................................................................... 15 5. RF Exposure Limits [2] ............................................................................................................................. 16 Uncontrolled Environment ............................................................................................................................ 16 Controlled Environment ............................................................................................................................... 16 6. Measurement Uncertainty ........................................................................................................................ 17 7. SAR System Verification .......................................................................................................................... 18 Tissue Verification ....................................................................................................................................... 18 SAR System Verification .............................................................................................................................. 18 8. SAR Test Data Summary ......................................................................................................................... 19 Procedures Used To Establish Test Signal .................................................................................................. 19 Device Test Condition .................................................................................................................................. 19 9. SAR Test Results .................................................................................................................................... 22 10. Simultaneous Transmission Analysis .....…

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NVLAP Lab Code 200087-0 Rogers Labs, a division of The Compatibility Center LLC Garmin International, Inc. 7915 Nieman Road FCC ID: IPH-B4281 IC: 1792A-B4281 PMN: B04281 Lenexa, KS 66214 Test: 250528 SN’s: 3514215240, 3514215200 Phone/Fax: (913) 660-0666 Test to: 47CFR 15C, RSS-Gen RSS-247 Date: October 14, 2025 Revision 1 File: B04281 DSS TstRpt 250528 r1r1 Page 1 of 49 47CFR Paragraph 15.247 FHSS and Industry Canada RSS-GEN Issue 5 and RSS-247 Issue 4 Application For Grant of Certification Model: B04281 2402-2480 MHz (DSS) Frequency Hopping Spread Spectrum License Exempt Intentional Radiator FCC ID: IPH-B4281 IC: 1792A-B4281 Garmin International, Inc. 1200 East 151st Street Olathe, KS 66062 Jeff Hailey Staff Compliance Engineer Test Report Number: 250528 Test Date: May 28, 2025 – August 28, 2025 Authorized Signatory: Patrick Powell Rogers Labs, a division of The Compatibility Center LLC FCC Designation: US5305 ISED Registration: 3041A This report shall not be reproduced except in full, without the written approval of the laboratory. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the U.S. Government. Rogers Labs, a division of The Compatibility Center LLC 7915 Nieman Rd. Lenexa, KS 66214 Phone / Fax (913) 660-0666 NVLAP Lab Code 200087-0 Rogers Labs, a division of The Compatibility Center LLC Garmin International, Inc. 7915 Nieman Road FCC ID: IPH-B4281 IC: 1792A-B4281 PMN: B04281 Lenexa, KS 66214 Test: 250528 SN’s: 3514215240, 3514215200 Phone/Fax: (913) 660-0666 Test to: 47CFR 15C, RSS-Gen RSS-247 Date: October 14, 2025 Revision 1 File: B04281 DSS TstRpt 250528 r1r1 Page 2 of 49 Tabl e of Cont ents Tabl e of Cont ents TABLE OF CONTENTS .................................................................................................. 2 REVISIONS ..................................................................................................................... 4 EXECUTIVE SUMMARY ................................................................................................ 5 OPINION / INTERPRETATION OF RESULTS ............................................................... 5 EQUIPMENT TESTED .................................................................................................... 8 Environmental Conditions .................................................................................................................................. 8 Equipment Operational Modes ........................................................................................................................... 9 Equipment Function .......................................................................................................................................... 10 Equipment Configuration.................................................................................................................................. 11 APPLICATION FOR CERTIFICATION ......................................................................... 12 APPLICABLE STANDARDS ........................................................................................ 13 TEST PROCEDURES ................................................................................................... 14 AC Line Conducted Emission Test Procedure ................................................................................................ 14 Radiated Emission Procedure ........................................................................................................................... 14 Antenna Port Conducted Emission Test Procedure ........................................................................................ 14 Diagram 1 Test arrangement for power-line conducted emissions ................................................................ 15 Diagram 2 Test arrangement for radiated emissions of tabletop equipment................................................ 16 Diagram 3 Test arrangement for radiated emissions tested in Semi-Anechoic Chamber (SAC) and Outdoor Area Test Site (OATS) ....................................................................................................................... 17 Diagram 4 Test arrangement for Antenna Port Conducted emissions .......................................................... 18 TEST SITE LOCATIONS .............................................................................................. 18 UNITS OF MEASUREMENTS ...................................................................................... 19 STATEMENT OF MODIFICATIONS AND DEVIATIONS ............................................. 20 INTENTIONAL RADIATORS ........................................................................................ 20 NVLAP Lab Code 200087-0 Rogers Labs, a division of The Compatibility Center LLC Garmin International, Inc. 7915 Nieman Road FCC ID: IPH-B4281 IC: 1792A-B4281 PMN: B04281 Lenexa, KS 66214 Test: 250528 SN’s: 3514215240, 3514215200 Phone/Fax: (913) 660-0666 Test to: 47CFR 15C, RSS-Gen RSS-247 Date: October 14, 2025 Revision 1 File: B04281 DSS TstRpt 250528 r1r1 Page 3 of 49 Antenna Requirements ...................................................................................................................................... 20 Restricted Bands of Operation .......................................................................................................................... 20 Table 1 Radiated Emissions in Restricted Frequency Bands Data Mode 1, BT BR (GFSK) ............................ 21 Summary of Results for Radiated Emissions in Restricted Bands .................................................................... 21 AC LINE CONDUCTED EMI PROCEDURE ................................................................. 22 Figure 1 AC Line Conducted Emissions Data L1 (Config. #4, EUT – Computer) ....................................... 23 Figure 2 AC Line Conducted Emissions Data L2 (Config. #4,…

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Antenna Data Sheet Antenna Manufacturer Information: Antenna(s) are manufactured and designed at Garmin headquarters located at 1200 E. 151 st Street, Olathe, KS, 66062, USA. Garmin is an antenna manufacturer that specializes in antenna construction and has been a technology leader in high performance antenna design for over thirty years. State-of-the art equipment is used to design, measure, and analyze new designs that are superior to competitor designs and highly proprietary in nature. Antenna Description: This data sheet contains the antenna gain information for the B04281-A1/A2 for Garmin Model B04281. The approximate operational frequency band of these technologies is given, and the maximum gain within the frequency band is shown in table 1. Table 1 Antenna Gain: Antenna Model Number Antenna Type Antenna Maximum Gain @ Frequency Antenna Approximate Frequency Band B04281-A1 Inverted F 5.24 dBi @ 2480MHz 2402 to 2480 MHz B04281-A2 Loop 0.08 dBi @ 5755 MHz 5725 to 5850 MHz Additional Information: Contact Garmin for other information regarding antenna design, dimensions, cable length, etc.