OQ5-GXLIEM4UHF Wireless Transmitter

UHF Wireless Transmitter GXLIEM4 CAD Audio, LLC 154 Woodlawn Rd Berlin CT 06037 United States Of America 564.75-585.75MHz UHF Wireless Transmitter UHF Wireless Transmitter 564.75-585.75MHz 564.75-585.75MHz 506-594MHz This device operates on a no-interference, no-protection basis. Should the user seek to obtain protection from other radio services operating in the same TV bands, a radio licence is required. For further details, consult Innovation, Science and Economic Development Canada’s Client Procedures Circular CPC-2-1-28, Voluntary Licensing of Licence-Exempt Wireless Microphones in the TV Bands. Cet appareil fonctionne sur une base de non-interférence, de non-protection. Si l’utilisateur cherche à obtenir une protection contre d’autres services de radio fonctionnant dans les mêmes bandes de télévision, une licence radio est requise. Pour de plus amples renseignements, veuillez consulter la Circulaire des procédures concernant les clients CPC-2-1-28, Licence volontaire pour les microphones sans fil exempts de licence dans les bandes de télévision. Antenna type:External antenna This radio transmitter [lC:10885A-GXLIEM4] Cetémetteur radio[lC:10885A-GXLlEM4] a étéapprouvé par Innovation, Sciences et English: This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s).Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesiredoperation of the device. ‐ French:Cet appareil contient des émetteurs/récepteurs exempts de licence qui sontconformes aux CNR exempts de licence d’Innovation, Sciences et Développement économiqueCanada. Le fonctionnement est soumis aux deux conditions suivantes : (1) Cet appareil ne doit pas causer d’interférences. (2) Cet appareil doit accepter toute interférence, y compris les interférences susceptibles deprovoquer un fonctionnement indésirable de l’appareil. FCC Warnning: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 0cm between the radiator and your body.

CAD Audio, LLC 154 Woodlawn Rd Suite C Berlin, CT 06037 Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2025/11/26 U.S. Agent Designation CAD Audio, LLC acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: OQ5-GXLIEM4): Name and company of U.S. agent: CAD Audio, LLC Physical U.S. address of agent: 154 Woodlawn Rd Suite C Berlin, CT 06037 FRN of U.S. agent: 0021896345 Email address of U.S. agent: [email protected] CAD Audio, LLC acknowledges their obligation to accept service of process on behalf of CAD Audio, LLC CAD Audio, LLC with the FRN [0021896345] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Gary Byers Manager CAD Audio, LLC Signature Gary Byers Manager CAD Audio, LLC 48_[mo del] US_Agent_2.911(d)(7) - U, V0 5

CAD Audio, LLC Add: 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States Date: 2025-11-30 FCC ID: OQ5-GXLIEM4 Dear Sir/Madam, We, CAD Audio, LLC Hereby declares the following statement for Federal Communications Commission, PCB board, circuit, structure and internal of these model(s) are the same, Only model number and colour is different for these model: Product name: UHF Wireless Transmitter Model no.: GXLIEM, GXLIEM2, GXLIEM4, GXLIEMBP, VocaLync, WX80 Sincerely, Name/Title： Gary Byers/Director of Operations Company: CAD Audio, LLC Address: 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States Phone: 234-226-1337 Fax: 440-248-4902 E-Mail: [email protected]

CAD Audio, LLC 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications Commission Date: 2025-11-30 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID: OQ5-GXLIEM4 CAD Audio, LLC (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List, established pursuant to § 1.50002 of reference chapter, as an entity producing “covered” communication equipment. The equipment for which authorization is sought is not “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List that prohibited from receiving an equipment authorization pursuant to section § 2.903 of the FCC rules. Sincerely yours, Name/Title： Gary Byers/Director of Operations Company: CAD Audio, LLC Address: 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States Phone: 234-226-1337 Fax: 440-248-4902 E-Mail: [email protected]

CAD Audio, LLC 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States 1 | P a g e Attestation Statements To: Federal Communications Commission Date: 2025-11-30 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID:OQ5-GXLIEM4 Product Name:UHF Wireless Transmitter This letter serves as an attestation that the equipment identified above ☐ is / ☒ is not (select one) "covered" software as defined under the Federal Communications Commission (FCC) Covered List requirements, as outlined in FCC 22-84 and KDB 986446. Specifically, the undersigned certifies that the equipment for which authorization is sought: 1. Does not contain cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors, assignees, parents, subsidiaries, affiliates, or any entity that has rebranded or relabeled software produced by the aforementioned entities. 2. Does not have the capability to store, run, or deliver any software identified on the FCC Covered List, including but not limited to cybersecurity and anti-virus software. To support this attestation, the appendix evaluation documentation has been prepared and is included in the certification filing. This attestation is based on a thorough evaluation of the device's design, functionality, and software environment. The undersigned affirms that the information provided is accurate and complete to the best of their knowledge. Sincerely yours, Name/Title： Gary Byers/Director of Operations Company: CAD Audio, LLC Address: 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States Phone: 234-226-1337 Fax: 440-248-4902 E-Mail: [email protected] CAD Audio, LLC 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States 2 | P a g e Evaluation regarding to the Covered List Software: Compliance Methodology Evaluation Process Results Device is Inherent compliance ☒ The Chipset(s) used is limited to run the Cybersecurity or anti-virus software. The MCU “SH88F4051A “, The RF chip “KT0626M “ don’t support the mentioned function. ☐ The Memory used is limited to run the Cybersecurity or anti-virus software. ☐ There is storage capacity limitation for store or install the Cybersecurity or anti-virus software. ☐ Operating system used is limited to run, install or deliver the Cybersecurity or anti-virus software. Device is not Inherent compliance ☐ Evaluation Based on Software Bill of Materials (SBoM) ☐ Evaluation Based on Scan for Software on the device ☐ Evaluation Based on Filesystem scan ☐ Evaluation Based on Running software check

CAD Audio, LLC 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States Date: 2025-11-30 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request for: FCC ID: OQ5-GXLIEM4 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request permanent confidential treatment of the exhibits accompanying this certification application as outlined below : ⎯ Block Diagram ⎯ Schematics ⎯ Operational Description The above exhibits contain trade secrets and/or proprietary information that are not publicly available and materials that the Applicant has spent considerable efforts in developing. Public disclosure of these may be harmful to the Applicant and give an unfair advantage to competitors on the market. Sincerely, Name/Title： Gary Byers/Director of Operations Company: CAD Audio, LLC Address: 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States Phone: 234-226-1337 Fax: 440-248-4902 E-Mail: [email protected]

CAD Audio, LLC 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States Date: 2025-11-30 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: OQ5-GXLIEM4 I, the undersigned, hereby authorize (SHENZHEN CTA TESTING TECHNOLOGY CO., LTD.) to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by (SHENZHEN CTA TESTING TECHNOLOGY CO., LTD.) shall have the same effect as our own and I acknowledge that all responsibility for complying with the terms and conditions of certification, as specified by DERYCOM CERTIFICATION SERVICES, INC., still resides with (CAD Audio, LLC). We certify that we are not 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. §862, and that no party to the application, as defined in 47 CFR §1.2002(b), is subject to a denial of federal benefits that includes FCC benefits pursuant to that section. Sincerely, Name/Title: Gary Byers/Director of Operations Company: CAD Audio, LLC Address: 154 Woodlawn Rd Suite C Berlin Connecticut 06037 United States Phone: 234-226-1337 Fax: 440-248-4902 E-Mail: [email protected]

FCC ID: OQ5-GXLIEM4 External Photos of the EUT FCC ID: OQ5-GXLIEM4 FCC ID: OQ5-GXLIEM4

Label and Location Size: L: 4.0cm*W: 3.0cm Label and Location FCC ID : OQ5-GXLIEM4

FCC ID: OQ5-GXLIEM4 Internal Photos of the EUT ANT FCC ID: OQ5-GXLIEM4 FCC ID: OQ5-GXLIEM4 FCC ID: OQ5-GXLIEM4 FCC ID: OQ5-GXLIEM4 FCC ID: OQ5-GXLIEM4

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn RF Exposure evaluation Report Reference No. ..................... : FCC ID............................................. : CTA25090801402 OQ5-GXLIEM4 Compiled by ( position+printed name+signature) . : File administrators Zoey Cao Supervised by ( position+printed name+signature) . : Project Engineer Ace Chai Approved by ( position+printed name+signature) . : RF Manager Eric Wang Date of issue .................................... : Sep. 19, 2025 Testing Laboratory Name .............. : Shenzhen CTA Testing Technology Co., Ltd. Address............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao‘an District, Shenzhen, China Applicant’s name ............................ : CAD Audio, LLC Address............................................ : 154 Woodlawn Rd Suite C Berlin, CT 06037 Standard ........................................... : 47CFR §1.1310 47CFR §2.1093 KDB447498 D01 General RF Exposure Guidance v06 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purpses as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : UHF Wireless Transmitter Trade Mark ........................................ CAD AUDIO Manufacturer .................................... : CAD Audio, LLC Model/Type reference ...................... : GXLIEM Listed Models ................................... : GXLIEM2, GXLIEM4, GXLIEMBP, VocaLync, WX80 Modulation Type ............................... : FM Operation Frequency ........................ : 564.75-585.75MHz Rating ............................................... : DC 12.0V From external circuit Result ............................................... : PASS Report No.: CTA25090801402 Page 2 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : UHF Wireless Transmitter Model /Type : GXLIEM Listed Models : GXLIEM2, GXLIEM4, GXLIEMBP, VocaLync, WX80 Model difference : The PCB board, circuit, structure and internal of these models are the same, Only model number and colour is different for these model. Applicant : CAD Audio, LLC Address : 154 Woodlawn Rd Suite C Berlin, CT 06037 Manufacturer : CAD Audio, LLC Address : 154 Woodlawn Rd Suite C Berlin, CT 06037 Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA25090801402 Page 3 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 TEST STANDARDS ............................................................................................................ 4 2 SUMMARY .......................................................................................................................... 5 2.1 General Remarks ..................................................................................................... 5 2.2 Product Description ................................................................................................. 5 2.3 Special Accessories ................................................................................................. 5 2.4 Modifications ............................................................................................................ 5 3 TEST ENVIRONMENT ....................................................................................................... 6 3.1 Address of the test laboratory .................................................................................. 6 3.2 Test Facility .............................................................................................................. 6 3.3 Statement of the measurement uncertainty ............................................................. 6 4 Test limit .............................................................................................................................. 7 4.1 Requirement ............................................................................................................ 7 4.2 Conducted Power Results ....................................................................................... 7 4.3 Manufacturing tolerance .......................................................................................... 7 4.4 Evaluation Result ..................................................................................................... 8 4.5 Simultaneous Transmission for SAR Exclusion ...................................................... 8 5 Conclusion ........................................................................................................................... 8 Report No.: CTA25090801402 Page 4 of 8 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875…

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DOC.NO. 005 TYPE TNC FrequencyRange506-594MHZ ProductDrawing PerformanceParameters ElectricalParameters FrequencyRange506-594MHz OutputImpedance 50ohm VSWR≤2.5 Gain 2.0ｄＢｉ DielectricVoltageWithstandTest １.２ＫＶ ContinuityTestingAccess PolarizationVertical RadiationDirectionOmnibearing ConnectTypeTNC MechanicalSpecifications Antennasize 260MM ±3 Coaxial-Cable ＲＧ３１６ EnvironmentalParameters OperatingTemperature－３０°C～６５°C StorageTemperature－３０°C～７５°C

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART CTEST REPORT FCC PART 15.236 Report Reference No. ..................... : FCC ID. .............................................: CTA25090801401 OQ5-GXLIEM4 Compiled by ( position+printedname+signature) ... : File administrators Zoey Cao Supervised by (position+printedname+signature) .... : Project Engineer Ace Chai Approved by (position+printedname+signature) .... : RF Manager Eric Wang Date of issue ..................................... : Sep. 19, 2025 Testing Laboratory Name .............: Shenzhen CTA Testing Technology Co., Ltd. Address ............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao‘an District, Shenzhen, China Applicant’s name ............................ : CAD Audio, LLC Address ............................................ : 154 Woodlawn Rd Suite C Berlin, CT 06037 Test specification ...........................: Standard ........................................... : FCC Part 15.236 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description .....................: UHF Wireless Transmitter Trade Mark ....................................... : CAD AUDIO Manufacturer .................................... : CAD Audio, LLC Model/Type reference....................... : GXLIEM Listed Models ................................... : GXLIEM2, GXLIEM4, GXLIEMBP, VocaLync, WX80 Modulation Type ............................... : FM Operation Frequency ........................ : 564.75-585.75MHz Rating ............................................... : DC 12.0V From external circuit Result................................................ : PASS Report No.: CTA25090801401 Page 2 of 33 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : UHF Wireless Transmitter Model /Type : GXLIEM Listed Models : GXLIEM2, GXLIEM4, GXLIEMBP, VocaLync, WX80 Model difference : The PCB board, circuit, structure and internal of these models are the same, Only model number and colour is different for these model. Applicant : CAD Audio, LLC Address : 154 Woodlawn Rd Suite C Berlin, CT 06037 Manufacturer : CAD Audio, LLC Address : 154 Woodlawn Rd Suite C Berlin, CT 06037 Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory Report No.: CTA25090801401 Page 3 of 33 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 T E S T S T A N D A R D S ................................................................. 4 2 S U M M A R Y ............................................................................ 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Equipment Under Test 5 2.4 Short description of the Equipment under Test (EUT) 5 2.5 EUT operation mode 6 2.6 Block Diagram of Test Setup 6 2.7 Related Submittal(s) / Grant (s) 6 2.8 Modifications 6 3 T E S T E N V I R O N M E N T .............................................................. 7 3.1 Address of the test laboratory 7 3.2 Test Facility 7 3.3 Environmental conditions 7 3.4 Summary of measurement results 7 3.5 Statement of the measurement uncertainty 8 3.6 Equipments Used during the Test 8 4 T E S T C O N D I T I O N S A N D R E S U L T S ........................................... 10 4.1 AC Power Conducted Emission 10 4.2 Maximum Output Power 13 4.3 Occupied Bandwidth 15 4.4 Necessary Bandwidth 17 4.5 Transmitter spurious emissions 19 4.6 Frequency Stability 22 5 T E S T S E T U P P H O T O S O F T H E E U T ......................................... 24 6 P H O T O S O F T H E E U T ........................................................... 26 Report No.: CTA25090801401 Page 4 of 33 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 1 T E S T S T A N D A R D S The tests were performed according to following standards: FCC Rules Part 15.236: Operation of wireless microphones in the bands 54-72 MHz, 76-88 MHz, 174-216 MHz, 470-608 MHz and 614-698 MHz. ANSI C63.10-2020 +COR. 1-2023+ C63.10A-2024+ ERRATA TO C63.10A-2024: American National Standard for Testing Unlicensed Wireless Devices Report No.: CTA25090801401 Page 5 of 33 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : Sep. 08, 2025 Testing commenced on : Sep. 08, 2025 Testing concluded on : Sep. 19, 2025 2.2 Product Description Product Name: UHF Wireless Transmi…

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FCC ID: OQ5-GXLIEM4 Test Setup Photos of the EUT FCC ID: OQ5-GXLIEM4