2A2CV-C87BMP3 Player FM Transmitters

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. 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. The device has been evaluated to meet general RF exposure requirement.

July 5, 2021 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2A2CV-C87B Product Name: MP3 Player FM Transmitters Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:  Schematics Long-term confidential  Block diagram Long-term confidential  Operation description Long-term confidential These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Signature: Name youchu zhang Position CEO Company Name youxianjiaochushangmaoyouxiangongsi Address hunansheng zhuzhoushi youxiantanqiaojiedaomazhibeicunluojiawen Tel +8613266590386 Fax / Email [email protected]

FCC ID: 2A2CV-C87B FCC ID: 2A2CV-C87B FCC ID: 2A2CV-C87B

2.5cm 1.0cm Label Location FCC ID: 2A2CV-C87B youxianjiaochushangmaoyouxiangongsi Product name: MP3 Player FM Transmitters Model No.: C87B

FCC ID: 2A2CV-C87B FCC ID: 2A2CV-C87B FCC ID: 2A2CV-C87B FCC ID: 2A2CV-C87B FCC ID: 2A2CV-C87B FCC ID: 2A2CV-C87B

FCC TEST REPORT FCC ID: 2A2CV-C87B On Behalf of youxianjiaochushangmaoyouxiangongsi MP3 Player FM Transmitters Model No.: C87B Prepared for : youxianjiaochushangmaoyouxiangongsi Address : hunansheng zhuzhoushi youxiantanqiaojiedaomazhibeicunluojiawen Prepared By : Shenzhen Alpha Product Testing Co., Ltd. Address : Building i, No.2, Lixin Road, Fuyong Street, Bao'an District, 518103, Shenzhen, Guangdong, China Report Number : A2105184-C01-R02 Date of Receipt : June 4, 2021 Date of Test : June 4, 2021 – July 9, 2021 Date of Report : July 9, 2021 Version Number : V0 Page 2 of 30 Report No.: A2105184-C01-R02 TABLE OF CONTENTS Description Page 1. SUMMARY OF STANDARDS AND RESULTS ............................................................. 6 1.1. Description of Standards and Results ......................................................................... 6 2. GENERAL INFORMATION............................................................................................. 7 2.1. Description of Device (EUT) ...................................................................................... 7 2.2. Accessories of Device (EUT) ..................................................................................... 8 2.3. Tested Supporting System Details .............................................................................. 8 2.4. Block Diagram of Connection Between EUT and Simulators ................................... 8 2.5. Test Mode Description ................................................................................................ 8 2.6. Test Conditions ........................................................................................................... 9 2.7. Test Facility ................................................................................................................ 9 2.8. Measurement Uncertainty ......................................................................................... 10 2.9. Test Equipment List .................................................................................................. 11 3. POWER LINE CONDUCTED EMISSION TEST ........................................................ 12 3.1. Block Diagram of Test Setup .................................................................................... 12 3.2. Test Limits ................................................................................................................ 12 3.3. Configuration of EUT on Test .................................................................................. 13 3.4. Operating Condition of EUT .................................................................................... 13 3.5. Test Procedure .......................................................................................................... 13 3.6. Test Results ............................................................................................................... 13 4. RADIATED EMISSION TEST........................................................................................ 15 4.1. Block Diagram of Test Setup .................................................................................... 15 4.2. Test Limit .................................................................................................................. 16 4.3. Configuration of EUT on Test .................................................................................. 18 4.4. Operating Condition of EUT .................................................................................... 18 4.5. Test Procedure .......................................................................................................... 18 4.6. Test Results ............................................................................................................... 19 5. BAND EDGE TEST .......................................................................................................... 22 5.1. Block Diagram of Test Setup .................................................................................... 22 5.2. Test Limit .................................................................................................................. 22 5.3. Configuration of EUT on Test .................................................................................. 23 5.4. Operating Condition of EUT .................................................................................... 23 5.5. Test Procedure .......................................................................................................... 23 5.6. Test Results ............................................................................................................... 25 6. OCCUPIED BANDWIDTH TEST .................................................................................. 26 6.1. Block Diagram of Test Setup .................................................................................... 26 6.2. Test Limit .................................................................................................................. 26 6.3. Test Procedure .......................................................................................................... 26 6.4. Test Results ............................................................................................................... 26 7. ANTENNA REQUIREMENT .......................................................................................... 28 7.1. Standard Requirement ............................................................................................... 28 7.2. Antenna Connected Construction ............................................................................. 28 Page 3 of 30 Report No.: A2105184-C01-R02 7.3. Results ....................................................................................................................... 28 8. PHOTOGRAPH ................................................................................................................ 29 8.1…

Text truncated - open the document above for the full version.

FCC ID: 2A2CV-C87B Radiated Emission FCC ID: 2A2CV-C87B Conducted Emission