2AV8DBB2787Universal FM Transmitter

FCC Caution： 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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 hel p.

Rev 11/20/07 (TELEPHONE EST(HK)CO.,LTD) Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AV8DBB2787 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Block Diagram, Schematics, Operational Description Block Diagram Schematics Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, ( Heidi)

(TELEPHONE EST(HK)CO.,LTD) Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: SUBJECT: FCC Application for FCC ID: 2AV8DBB2787 To Whom It May Concern: We, the undersigned, hereby authorize Andy Yuan at Shenzhen BCTC Testing Co., Ltd. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Andy Yuan of Shenzhen BCTC Testing Co., Ltd. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, ( Heidi)

External Photos

10*5mm Label Location FCC ID: 2AV8DBB2787

Internal Photos Antenna

Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2004001540E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 1 of 33 FCC Part 15C Test Report FCC ID: 2AV8DBB2787 Product Name: Universal FM Transmitter Trademark: N/A Model Name : BB2787 Prepared For : TELEPHONE EST(HK)CO.,LTD Address : Room 706, 7F, FuLi tianhe commercial building, Linhe East Road and tianhe district, Guangzhou, China Prepared By : Shenzhen BCTC Testing Co., Ltd. Address : BCTC Building & 1-2F, East of B Building, Pengzhou Industrial, Fuyuan 1st Road, Qiaotou Community, Fuyong Street, Bao’an District, Shenzhen, China Test Date: Apr. 20, 2020 to May 07, 2020 Date of Report : May 08, 2020 Report No.: BCTC2004001540E Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2004001540E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 2 of 33 VERIFICATION OF COMPLIANCE Applicant’s name ........ TELEPHONE EST(HK)CO.,LTD Address ....................... . Room 706, 7F, FuLi tianhe commercial building, Linhe East Road and tianhe district, Guangzhou, China Manufacture's Name .. . TELEPHONE EST(HK)CO.,LTD Address ....................... . Room 706, 7F, FuLi tianhe commercial building, Linhe East Road and tianhe district, Guangzhou, China Product description Product name ................ Universal FM Transmitter Trademark: N/A Model Name: BB2787 Test Standards: FCC Part15.239 ANSI C63.10:2013 This device described above has been tested by BCTC, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of BCTC, this document may be altered or revised by BCTC, personal only, and shall be noted in the revision of the document. Test Result ....................................... Pass Prepared by(Engineer): Cai Fang Zhong Reviewer(Supervisor): Eric Yang Approved(Manager): Zero Zhou Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2004001540E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 3 of 33 Table of Contents Page 1 . SUMMARY OF TEST RESULTS 5 1.1 TEST FACILITY 6 1.2 MEASUREMENT UNCERTAINTY 6 2 . GENERAL INFORMATION 7 2.1 GENERAL DESCRIPTION OF EUT 7 2.2 DESCRIPTION OF TEST MODES 8 2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 8 2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 9 2.5 EQUIPMENTS LIST FOR ALL TEST ITEMS 10 3 . EMC EMISSION TEST 12 3.1 CONDUCTED EMISSION MEASUREMENT 12 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS 12 3.1.2 TEST PROCEDURE 13 3.1.3 DEVIATION FROM TEST STANDARD 13 3.1.4 TEST SETUP 13 3.1.5 EUT OPERATING CONDITIONS 13 3.1.6 TEST RESULTS 13 3.2 RADIATED EMISSION MEASUREMENT 14 3.2.1 RADIATED EMISSION LIMITS 14 3.2.2 TEST PROCEDURE 15 3.2.3 TEST SETUP 16 3.2.4 EUT OPERATING CONDITIONS 17 3.2.5 TEST RESULTS 18 3.2.6 TEST RESULTS (1GHZ~6GHZ) 21 3.2.7 FIELD STRENGTH CALCULATION 22 4 . BANDWIDTH TEST 25 4.1 APPLIED PROCEDURES / LIMIT 25 4.1.1 TEST PROCEDURE 25 4.1.2 DEVIATION FROM STANDARD 25 4.1.3 TEST SETUP 25 4.1.4 EUT OPERATION CONDITIONS 25 4.1.5 TEST RESULTS 26 5 . BAND EDGE MEASUREMENT 28 5.1 APPLICABLE STANDARD 28 5.2 TEST PROCEDURE 28 5.3 DEVIATION FROM STANDARD 28 5.4 TEST SETUP 28 Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2004001540E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 4 of 33 Table of Contents Page 5.5 EUT OPERATION CONDITIONS 28 6 . ANTENNA REQUIREMENT 31 6.1 STANDARD REQUIREMENT 31 6.2 EUT ANTENNA 31 7 . EUT TEST PHOTO 32 8 . EUT PHOTO 33 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2004001540E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 5 of 33 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.239) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission N/A 15.209&15.239 Fundamental &Radiated Spurious Emission Measurement PASS 15.239a Occupy Bandwidth PASS 15.203 Antenna Requirement PASS 15.239a Band Edge Measurement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2004001540E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 6 of 33 1.1 TEST FACILITY Shenzhen BCTC Testing Co., Ltd. Add.: BCTC Building & 1-2F, East of B Building, Pengzhou Industrial, Fuyuan 1st Road, Qiaotou Community, Fuyong Street, Bao’an District, Shenzhen, China FCC Test Firm Registration Number: 712850 IC Registered No.: 23583 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %。 No. Item Uncertainty 1 3m camber Radiated spurious emission(30MHz-1GHz) U=4.3dB 2 3m chamber Radiated spurious emission(1GHz-18GHz) U=4.5dB 3 3m chamber Radiated spurious emission(18GHz-40GHz) U=3.34dB 4 Conducted Adjacent channel power U=1.38dB 5 Conducted output power uncertainty Above 1G U=1.576dB 6 Conducted output power uncertainty below 1G U=1.28dB 7 humidity uncertainty U=5.3% 8 Temperature uncertainty U=0.59°C Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2004001540E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 7 of 33 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT Equipment Universal FM Transmitter Trade Name N/A Model Name BB2787 Serial Model N/A Model Difference N/A Product Description Operation Frequency: 88.1-107.9 MHz Modulation Type: FM Antenna Type: Internal antenna Antenna Gain: 0dBi Ratings DC 12V Connecting I/O Port(s) Please refer to the User's Manual Note: 1. For a more detailed features description, please refer to the manufacturer’s specification…

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Shenzhen BCTC Testing Co., Ltd. Radiated Measurement Photos