IPH-04998Digital Transmission System Transceiver

Rev 1/26/2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: October 4, 2025 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: IPH-04998 Garmin International, Inc., Garmin certifies that, as of the date of the filing of the application, Garmin International, Inc. is our designated U.S. agent for service of process for the 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 the conclusion of any Commission-related proceeding involving the equipment. Garmin International, 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: FRN: 0005088588 Name: Garmin International, Inc. Address: 1200 East 151 st Street, Olathe, Kansas, 66062 Contact Person: Ben Karsak Tel.: 913-440-1946 Email: [email protected] Sincerely, Ben Karsak Manager Compliance Engineering

Rev 1/27/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: October 4, 2025 Ref: Attestation Statements Part 2.911(d)(5) FCC ID: IPH-04998 FRN: 0005088588 Garmin International, Inc., (“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. 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 an entity 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, Dan Irish Lead Compliance Engineer Garmin International, Inc.

March 6, 2024 Federal Communications Commission Equip Approval Services Post Office Box 358315 Pittsburgh, Pennsylvania 15215-5315 To Whom It May Concern: Pursuant to 47 CFR 2.911, Garmin International, Inc. (Garmin) has authorized Mr. Patrick Powell and Mr. Jeremy Cott of The Compatibility Center LLC to act on Garmin’s behalf for the sole and express purpose of processing applications to the Federal Communication Commission (FCC) for equipment FCC authorization. As such Mr. Powell and Mr. Cott are authorized to: 1) Sign Form 731, 2) Sign letters of application, 3) Request confidentiality, and 4) Exchange data and information with the FCC, and authorized TCBs on behalf of Garmin. This authorization is not assignable to other beyond Mr. Powell and Mr. Cott. This authorization is in effect until notified to the contrary by Garmin. Sincerely, Ben Karsak Manager Compliance Engineering

October 18, 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 Ms. Sara Jones, Design Certification Engineer Mr. Mitchell Phillipi, Compliance Engineering Team Lead Mr. Jacky Yeung, Compliance Engineer Mr. William Pertner, Compliance Engineering Team Lead Mr. Hayden Pernia, Compliance Engineer Mr. Jay Everett, Compliance Engineering Team Lead Mr. Jeremiah Darden, Compliance Engineer Mr. Richard Kockelkoren, Compliance Engineer Mr. Henry Lin, Compliance Engineer Mr. Mike Moranha, Compliance Engineer Ms. Claire Fryman, Compliance Engineer Ms. Pam Sequeira, Compliance Engineer Mr. Rick Jankovics, Compliance Engineer Mr. Jeffrey Hailey, Compliance Engineer Mr. Brodie Halbfoster, Compliance Engineer Mr. Dan Irish, 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.

REQUEST FOR CONFIDENTIALITY Date: October 26, 2025 Applicant: Garmin International Subject: Confidentiality Request for FCC ID: IPH-04998 IC: 1792A-04998 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, Dan Irish Lead Compliance Engineer

E-Label Information A. The following specific instructions are provided in the Quick Start Manual that ships with the device. B. The following are the specific instructions provided in the owner’s manual that is provided at www.garmin.com/manuals: M/N: A04998 FCC ID: IPH-04998 IC: 1792A-04998 CONTAINS: FCC ID: IPH-04349 CONTAINS: IC: 1792A-04349 WARNING: This device must be turned off at all times while on board aircraft. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may no cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. 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. E. PMN that is permanently affixed to the back of the unit via a label as shown above.

© 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: September 8-9 , 2025 1200 E. 151 st Street Test Report Number: SAR.20250904 Olathe, KS 66062 Revision B 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 (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-04998 Model(s): A04998 Marketing Name: A04998 Test Sample: Engineering Unit Same as Production Serial Number: 3611591329 Equipment Type: Short-Range Device and Mobile Earth Station Classification: Portable Transmitter Next to Body TX Frequency Range: 1616 – 1626 MHz; 2400 – 2480 MHz Frequency Tolerance: ± 2.5 ppm Maximum RF Output: 1640 MHz – 33.0 dBm, 2450 MHz (BT) – 1.0 dBm, 2450 MHz (ANT) – 1.0 dBm Conducted Signal Modulation: DE-QPSK, QPSK, GFSK, GMSK Antenna Type: External Antenna (1.64 GHz Quad Helical 2.01 dBi Gain); Internal Antenna (2.4 GHz Inverted F -0.85 dBi Gain) Application Type: Certification FCC Rule Parts: Part 2, 15C, 25 KDB Test Methodology: KDB 447498 D01 v06 Maximum SAR Value: 1.32 W/kg Reported Maximum Simultaneous Value: 1.38 W/kg Reported Separation Distance to Probe: 0 mm Report Number: SAR.20250904 © 2025 RF Exposure Lab, LLC Page 2 of 66 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 .................................................................................................................................... 23 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-04998 IC: 1792A-04998 PMN: A04998 Lenexa, KS 66214 Test: 250908 SN’s: 3611591310, 3611591377 Phone/Fax: (913) 660-0666 Test to: 47CFR 15C, RSS-Gen RSS-210 Date: October 27, 2025 Revision 2 File: A04998 DXX TstRpt 250908 r2 Page 1 of 42 47CFR, PART 15C - Intentional Radiators 47CFR Paragraph 15.249 and Industry Canada RSS-GEN Issue 5 and RSS-210 Issue 11 Application For Grant of Certification Model: A04998 2402-2480 MHz Low Power Digital Transmitter (DXX) FCC ID: IPH-04998 IC: 1792A-04998 Garmin International, Inc. 1200 East 151st Street Olathe, KS 66062 Dan Irish Lead Compliance Engineer Test Report Number: 250908 Test Date: September 8, 2025 – September 30, 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-04998 IC: 1792A-04998 PMN: A04998 Lenexa, KS 66214 Test: 250908 SN’s: 3611591310, 3611591377 Phone/Fax: (913) 660-0666 Test to: 47CFR 15C, RSS-Gen RSS-210 Date: October 27, 2025 Revision 2 File: A04998 DXX TstRpt 250908 r2 Page 2 of 42 Table of Cont ents Table of Cont ents TABLE OF CONTENTS .................................................................................................. 2 REVISIONS ..................................................................................................................... 4 EXECUTIVE SUMMARY ................................................................................................ 5 OPINION / INTERPRETATION OF RESULTS ............................................................... 5 EQUIPMENT TESTED .................................................................................................... 6 Environmental Conditions .................................................................................................................................. 6 Equipment Operational Modes ........................................................................................................................... 7 Equipment Function ............................................................................................................................................ 7 Equipment Configuration.................................................................................................................................... 8 APPLICATION FOR CERTIFICATION ........................................................................... 9 APPLICABLE STANDARDS ........................................................................................ 10 EQUIPMENT TESTING PROCEDURES ...................................................................... 10 AC Line Conducted Emission Test Procedure ................................................................................................ 10 Radiated Emission Test Procedure ................................................................................................................... 10 Antenna Port Conducted Emission Test Procedure ........................................................................................ 11 Diagram 1 Test arrangement for power-line conducted emissions ................................................................ 12 Diagram 2 Test arrangement for radiated emissions of tabletop equipment................................................ 13 Diagram 3 Test arrangement for radiated emissions tested in Semi-Anechoic Chamber (SAC) or Open Area Test Site (OATS) ....................................................................................................................................... 14 Test arrangement for radiated emissions Below 1 GHz .................................................................................... 14 Test arrangement for radiated emissions Above 1 GHz .................................................................................... 14 Diagram 4 Test arrangement for Antenna Port Conducted emissions .......................................................... 15 TEST SITE LOCATIONS .............................................................................................. 15 UNITS OF MEASUREMENTS ...................................................................................... 16 NVLAP Lab Code 200087-0 Rogers Labs, a division of The Compatibility Center LLC Garmin International, Inc. 7915 Nieman Road FCC ID: IPH-04998 IC: 1792A-04998 PMN: A04998 Lenexa, KS 66214 Test: 250908 SN’s: 3611591310, 3611591377 Phone/Fax: (913) 660-0666 Test to: 47CFR 15C, RSS-Gen RSS-210 Date: October 27, 2025 Revision 2 File: A04998 DXX TstRpt 250908 r2 Page 3 of 42 STATEMENT OF MODIFICATIONS AND DEVIATIONS ............................................. 16 INTENTIONAL RADIATORS ........................................................................................ 17 Antenna Requirements ...................................................................................................................................... 17 Restricted Bands of Operation .......................................................................................................................... 17 Table 1 Radiated Emissions in Restricted Frequency Bands Data Mode 1 ANT (GFSK) ................................ 18 Summary of Results for Radiated Emissions in Restricted Bands ................................................................ 18 AC LINE C…

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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 A04998-A1/A2 for Garmin Model A04998. 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 Type Maximum Gain Approximate Frequency Band A04998-A1 Inverted-F, PCB -0.85 dBi 2402 to 2480 MHz A04998-A2 Quad-helical 2.01 dBi 1616 to 1626 MHz NOTE: Antenna Gain is listed as N/A in the table when the specific antenna is only used for radios where the applicable rule parts are measured as a radiated field strength, and/or there are no rules pertaining to antenna gain limits. Additional Information: Contact Garmin for other information regarding antenna design, dimensions, cable length, etc.