2AZMERAX-FM1Bluetooth FM TRANSMITTER

NOTE: 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 against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following 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 Changes or modifications not expressly approved by the party responsible for void the user's authority to operate the equipment.

YUANXINGFA TECHNOLOGY CO.,LTD Agent Authorization Company: YUANXINGFA TECHNOLOGY CO.,LTD Address: 16th floor, EMU International Building, Bantian Streets,Longgang District, Shenzhen,China Product Name: Bluetooth FM TRANSMITTER Model Number(s): RAX-FM1 Product Description: Bluetooth FM TRANSMITTER We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2021-04-20 Name: Jeff Wang Company: YUANXINGFATECHNOLOGYCO., LTD

YUANXINGFA TECHNOLOGY CO.,LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2021-04-15 Subject; Request for Confidentiality FCC ID: 2AZMERAX-FM1 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely YUANXINGFATECHNOLOGYCO., LTD Contact person: Jeff Wang

External Photos TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT VIEW OF EUT(PORT)-1 VIEW OF EUT(PORT)-2

FCC ID Label Location 26mm&15mm FCC ID: 2AZMERAX-FM1

Internal Photos OPEN VIEW OF EUT INTERNAL VIEW OF EUT-1 FM antenna port INTERNAL VIEW OF EUT-2 INTERNAL VIEW OF EUT-3 INTERNAL VIEW OF EUT-4 INTERNAL VIEW OF EUT-5 BT Antenna INTERNAL VIEW OF EUT-6

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description Bluetooth FM TRANSMITTER Model Name RAX-FM1 FCC ID 2AZMERAX-FM1 2. EVALUATION METHOD According to 447498 D01 General RF Exposure Guidance v06 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(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 3. CALCULATION P t =3.581dBm=2.28mW The value of the Maximum output power P t is referred to the test report of the CFR47 §15.247. The result for RF exposure evaluation SAR=(2.28mW /5mm) .[√2.441(GHz)]=0.71<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. §15.239 FM Pt= -50.93dBm=0.000008mW The value of the Maximum output power P t is referred to the test report of the CFR47 For frequencies below 100 MHz and test separation distances ≤ 50 mm，the power threshold determined by the following: P max =0.5 * 474 * [1+log(100/f)] mW, where f is MHz For 88.1MHz, P max =250mW. Pt< P max. For 107.9MHz, P = 3 x 5 / 0.1079^0.5 = 45.7 mW P max =45.7mW. Pt< P max. Simultaneous transmission between Bluetooth and FM transmitter: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)]·[√f(GHz)/x] W/kg, for test separation distances ≤ 50 mm; where x = 7.5 for 1-g SAR and x = 18.75 for 10-g SAR. SAR=(0.71+0. 000008)/7.5=0.095W/kg<1.6W/kg 4. CONCLUSION The SAR evaluation is not required.

Page 1 of 25 FCC Test Report Report No.: AGC01254200901FE06 FCC ID : 2AZMERAX-FM1 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Bluetooth FM TRANSMITTER BRAND NAME : RAXFLY MODEL NAME : RAX-FM1 APPLICANT : YUANXINGFA TECHNOLOGY CO.,LTD DATE OF ISSUE : Nov. 11,2020 STANDARD(S) : FCC Part 15.239 REPORT VERSION : V1.0 Attestation of Global Compliance(Shenzhen) Co., Ltd Report No.: AGC01254200901FE06 Page 2 of 25 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Nov. 11,2020 Valid Initial Release Report No.: AGC01254200901FE06 Page 3 of 25 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY .......................................................................................................... 4 2. GENERAL INFORMATION ...................................................................................................................... 5 2.1. PRODUCT DESCRIPTION ................................................................................................................. 5 3. MEASUREMENT UNCERTAINTY............................................................................................................ 5 4. DESCRIPTION OF TEST MODES............................................................................................................ 5 5. SYSTEM TEST CONFIGURATION .......................................................................................................... 6 5.1. EQUIPMENT USED IN EUT SYSTEM ................................................................................................ 6 5.2. SUMMARY OF TEST RESULTS ......................................................................................................... 6 6. TEST FACILITY ........................................................................................................................................ 7 7. RADIATED EMISSION ............................................................................................................................. 8 7.1. MEASUREMENT PROCEDURE ........................................................................................................ 8 7.2.TEST SETUP ..................................................................................................................................... 10 7.3. TEST RESULTFOR FIELD STRENGTH OF FUNDAMENTAL .......................................................... 11 7.4. TEST RESULT FOR FIELD STRENGTH OF BAND EDGE EMISSION ............................................. 11 7.5. TEST RESULT FOR SPURIOUS EMISSION .................................................................................... 12 8. BANDWIDTH .......................................................................................................................................... 14 8.1. MEASUREMENT PROCEDURE ...................................................................................................... 14 8.2. TEST SETUP .................................................................................................................................... 14 8.3. TEST RESULT .................................................................................................................................. 15 APPENDIX A: PHOTOGRAPHS OF TEST SETUP ................................................................................... 17 APPENDIX B: PHOTOGRAPHS OF EUT .................................................................................................. 18 Report No.: AGC01254200901FE06 Page 4 of 25 1. VERIFICATION OF CONFORMITY Applicant YUANXINGFA TECHNOLOGY CO.,LTD Address 16th floor, EMU International Building, Bantian Streets,Longgang District, Shenzh en Manufacturer INTRO UNION ELECTRONICS CO, LIMITED Address 6F, F BUILDING, EAST AREA NO.8, SHANGXUE TECH-CITY, BANTIAN, LONGGANG, SHENZHEN , CHINA Factory INTRO UNION ELECTRONICS CO, LIMITED Address 6F, F BUILDING, EAST AREA NO.8, SHANGXUE TECH-CITY, BANTIAN, LONGGANG, SHENZHEN , CHINA Product Designation Bluetooth FM TRANSMITTER Brand Name RAXFLY Test Model RAX-FM1 Date of test Sep. 17,2020 to Nov. 11,2020 Deviation No any deviation from the test method Condition of Test Sample Normal Test Result Pass Report Template AGCRT-US-BR/RF (2013-03-01) We hereby certify that: The above equipment was tested by Attestation of Global Compliance (Shenzhen) Co., Ltd. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10 (2013) and the energy emitted by the sample EUT tested as described in this report is in compliance with radiated emission limits of FCC part 15.239. Prepared By Sky Dong (Project Engineer) Nov. 11,2020 Reviewed By Max Zhang (Reviewer) Nov. 11,2020 Approved By Forrest Lei (Authorized Officer) Nov. 11,2020 Report No.: AGC01254200901FE06 Page 5 of 25 2. GENERAL INFORMATION 2.1. PRODUCT DESCRIPTION A major technical description of EUT is described as following Operation Frequency 88.1MHz-107.9MHz Test Frequency Low: 88.1 MHz; Middle:98.0 MHz; High: 107.9 MHz Field Strength(3m) 44.27dBuV/m(PK)@3m Modulation FM Number of channels 199(Channel spacing 100kHz) Hardware Version V1.0 Software Version V1.0 Antenna Designation Integral Antenna (Met 15.203 Antenna requirement) Antenna Gain 0dBi Power Supply DC 12V/24 by battery NOTE: About the EUT, please refer to User’s Manual. 3. MEASUREMENT UNCERTAINTY - Uncertainty of Radiated Emission below 1GHz, Uc = ±4.0 dB - Uncertainty of Radiated Emission above 1GHz, Uc = ±4.8 dB 4. DESCRIPTION OF TEST MODES NO. TEST MODE DESCRIPTION 1 Transmitting mode(Low channel) 2 Transmitting mode(Middle channel) 3 Transmitting mode(High channel) Note: 1. For Radiated Emission, 3axis were chosen for testing for each applicable mode. 2. All the requirements have been tested by modulating the transmitter with a 2.5 kHz tone at a fixed level which set to the manufacturer’s maximum rated input to the modulator. 3. Only t…

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Test Setup Photos RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz CONDUCTED TEST SETUP