2BFZZUR-338Wireless microphone

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Guangzhou Yayin Electronic Technology Co., Ltd Tianhequ Jishanxinlujie4hao301-118 Guangzhoushi Guangdongsheng China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2024-4-28 To whom it may concern: We, Guangzhou Yayin Electronic Technology Co., Ltd, hereby certify that the equipment for which authorization is sought (FCC ID: 2BFZZUR-338) is not “covered” equipment prohibited from receiving an equipment authorization pursuant to § 2.903 of the FCC rules. We also certify that, as of the date of the filing of the application, we are not identified on the Covered List (https://www.fcc.gov/supplychain/coveredlist) as an entity producing “covered” equipment. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(b) and (d)(5) and (6). 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. Sincerely, Signature LUO JI Manager Guangzhou Yayin Electronic Technology Co., Ltd 62_[model] CoveredEqu_2.911(d)(5)(i) and (ii) - U, V03

Guangzhou Yayin Electronic Technology Co., Ltd Tianhequ Jishanxinlujie4hao301-118 Guangzhoushi Guangdong sheng, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2024/04/22 U.S. Agent Designation Guangzhou Yayin Electronic Technology Co., Ltd 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: 2BFZZUR-338): Name and company of U.S. agent: Physical U.S. address of agent: FRN of U.S. agent: Email address of U.S. agent: REP America LLC acknowledges their obligation to accept service of process on behalf of Guangzhou Yayin REP America LLC 1942 Broadway St. STE 314CBoulder, CO 80302United States 0034192500 [email protected] Electronic Technology Co., Ltd Guangzhou Yayin Electronic Technology Co., Ltd with the FRN [0035312750] 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 LUO JI Manager Guangzhou Yayin Electronic Technology Co., Ltd Signature Ben Xu Manager REP America LLC 48_[mo del] US_Agent_2.911(d)(7) - U, V0 5

Guangzhou Yayin Electronic Technology Co., Ltd Add: Tianhequ Jishanxinlujie4hao301-118 Guangzhoushi Guangdongsheng China Date: 2024-4-28 FCC ID: 2BFZZUR-338 Dear Sir/Madam, We, Guangzhou Yayin Electronic Technology Co., Ltd 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 is different for these model: Product name: Wireless microphone Model no.: UR-338, NG-2, EX-8, GX-06, AD14, MX-4, MX-6, J-38, J-37, J-32, J-33, TF-400D, TF-600D, MIX8, MIX12, EX-12, XF8, XF12, XF16,GH10, GH4, GH7, GX6, GX8, GX12, PM-6, PM-8 Sincerely, Name/Title： LUO JI/Manager Company: Guangzhou Yayin Electronic Technology Co., Ltd Address: Tianhequ Jishanxinlujie4hao301-118 Guangzhoushi Guangdongsheng China Phone: 8613672897628 Fax: N/A E-Mail: [email protected]

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date:<2024-4-28> Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2BFZZUR-338 UR-338 For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： LUO JI/Manager Company: Guangzhou Yayin Electronic Technology Co., Ltd Address: Tianhequ Jishanxinlujie4hao301-118 Guangzhoushi Guangdongsheng China Phone: 8613672897628 Fax: N/A E-Mail: [email protected]

Guangzhou Yayin Electronic Technology Co., Ltd Tianhequ Jishanxinlujie4hao301-118 Guangzhoushi Guangdongsheng China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2024-4-28 To whom it may concern: We, the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2BFZZUR-338 including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. By signing this application form, we agree to Eurofins’ current valid General Terms and Conditions (AGB),Testing and Certification Regulations (PZO) which can be viewed on following website www.eurofins.de/ee or retrieved on request. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： LUO JI/Manager Company: Guangzhou Yayin Electronic Technology Co., Ltd Address: Tianhequ Jishanxinlujie4hao301-118 Guangzhoushi Guangdongsheng China Phone: 8613672897628 Fax: N/A E-Mail: [email protected]

FCC ID: 2BFZZUR-338 External Photos of the EUT FCC ID: 2BFZZUR-338 FCC ID: 2BFZZUR-338

Label and Location Size: L: 2.0cm*W: 1.0cm Label and Location FCC ID : 2BFZZUR-338

FCC ID: 2BFZZUR-338 Internal Photos of the EUT FCC ID: 2BFZZUR-338 Spring Antenna FCC ID: 2BFZZUR-338

RF Exposure evaluation FCC ID : 2BFZZUR-338 1.1. Applicable Standard According to §1.1307(b)(1), 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. According to §1.1310 and §2.1093 RF exposure requirement KDB447498 v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 1.2. Requirement According to KDB447498 D01 General RF Exposure Guidance v06 Section 4.3.1 Standalone SAR test exclusion considerations: “Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition, listed below, is satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions.22 The minimum test separation distance is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander (see 5) of section 4.1). To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, typically in the SAR measurement or SAR analysis report, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting is required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for the SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions; for example, handheld PTT two-way radios, handsets, laptops & tablets etc.23 “ [(max. power of channel, including tune-up tolerance, mW)/ (min. test separation distance, mm)] · [√f (GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where: • f (GHz) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. 1.3. Manufacturing tolerance FM(Peak) Channel Channel 1 Target (dBm) 6.0 Tolerance ±(dB) 1.0 Page 2 of 2 2. E v a l u a t i o n R e s u l t Evaluation Results Band/Mode f (GHz) Antenna Distance (mm) RF output power (including tune-up tolerance) SAR Test Exclusion Threshold SAR Test Exclusion dBm mW 500MHz 0.5 5 7.0 6.3096 0.9414<3.0 Yes 3. C o n c l u s i o n The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 v06 .....................End of Report.........................

1. Antenna Description: Antenna type Spring antenna Model UR-338 Frequency range 500MHz Manufacturer Enping Yaxin Electronic Technology Co., Ltd ANT Peak Gain 0.00 dBi 2. Antenna Photo:

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. .............................................: CTA24031900101 2BFZZUR-338 Compiled by ( position+printedname+signature) ... : File administrators Zoey Cao Supervised by (position+printedname+signature) .... : Project Engineer Amy Wen Approved by (position+printedname+signature) .... : RF Manager Eric Wang Date of issue ..................................... : Mar. 29, 2024 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 ............................ : Guangzhou Yayin Electronic Technology Co., Ltd Address ............................................ : Tianhequ Jishanxinlujie4hao301-118 Guangzhoushi Guangdong sheng, China 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 .....................: Wireless microphone Trade Mark ....................................... : NXG Manufacturer .................................... : Enping Yaxin Electronic Technology Co., Ltd Model/Type reference....................... : UR-338 Listed Models ................................... : NG-2, EX-8, GX-06, AD14, MX-4, MX-6, J-38, J-37, J-32, J-33, TF-400D, TF-600D, MIX8, MIX12, EX-12, XF8, XF12, XF16, GH10, GH4, GH7, GX6, GX8, GX12, PM-6, PM-8 Modulation Type ............................... : FM Operation Frequency ........................ : 500MHz Rating ............................................... : DC 3.0V From battery Result................................................ : PASS Report No.: CTA24031900101 Page 2 of 26 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 : Wireless microphone Model /Type : UR-338 Series Model : NG-2, EX-8, GX-06, AD14, MX-4, MX-6, J-38, J-37, J-32, J-33, TF-400D, TF-600D, MIX8, MIX12, EX-12, XF8, XF12, XF16, GH10, GH4, GH7, GX6, GX8, GX12, PM-6, PM-8 Applicant : Guangzhou Yayin Electronic Technology Co., Ltd Address : Tianhequ Jishanxinlujie4hao301-118 Guangzhoushi Guangdong sheng, China Manufacturer : Enping Yaxin Electronic Technology Co., Ltd Address : Tianhequ Jishanxinlujie4hao301-118 Guangzhoushi Guangdong sheng, China 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.: CTA24031900101 Page 3 of 26 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 11 4.3 Occupied Bandwidth 13 4.4 Necessary Bandwidth 14 4.5 Transmitter spurious emissions 16 4.6 Frequency Stability 18 5 T E S T S E T U P P H O T O S O F T H E E U T ......................................... 20 6 P H O T O S O F T H E E U T ........................................................... 21 Report No.: CTA24031900101 Page 4 of 26 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 C63.10-2013:AmericanNationalStandardforTestingUnlicensedWirelessDevices Report No.: CTA24031900101 Page 5 of 26 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 Gen…

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FCC ID: 2BFZZUR-338 Test Setup Photos of the EUT