BMW-34750TXARemote Control Toy Transmitter

Low Frequency control code generator 1KHz and 250Hz Oscillating Circuit for a carrier of 27MHz Mixer and Transmit Signal 34750TX Block Diagram 27MHz

PHOTOGRAPH OF THE PRODUCT FRONT VIEW OF THE PRODUCT REAR VIEW OF THE PRODUCT

FCC ID: BMW-34750TXA MADE IN CHINA 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.

PHOTOGRAPH OF THE PRODUCT INNER CIRCUIT TOP VIEW INNER CIRCUIT BOTTOM VIEW

FCC ID: BMW-34750TXA Circuit Description The 27.145MHz crystal oscillator drives the base of Q4 the final/buffer amplifier. The modulation provided by Q1 and Q2. The output of Q4 has the matching network consisting of L1 and C8 that limit the harmonic content and effect the proper coupling of the antenna to the output stage. Antenna, Ground and Power Source The antenna consists of a 14cm long telescoping chrome over brass tubing. There is no external ground connection. The ground is only that of the printed circuit board. Electric current is supplied by a 9 Volt (“6F22” size battery x 1) primary battery

         
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Date: 2002-07-11 TEST REPORT Page 1 of 20 No.: HM108264 FCC PART 15 SUBPART C CERTIFICATION REPORT FOR LOW POWER TRANSMITTER TEST REPORT No.:HM108264 Equipment Under Test [EUT]:Harley RC Motorcycle 27MHz Model Number:34750 Applicant:RC Ertl, Inc. FCC ID :BMW-34750TXA Date: 2002-07-11 TEST REPORT Page 2 of 20 No.: HM108264 CONTENT: Cover Page 1 of 20 Content Page 2-3 of 20 Conclusion Page 4 of 20 1.0General Details 1.1Test Laboratory Page 5 of 20 1.2Applicant Details Page 5 of 20 Applicant HKSTC Code Number for Applicant Manufacturer 1.3Equipment Under Test [EUT] Page 6 of 20 Description of EUT operation 1.4Date of Order Page 6 of 20 1.5Submitted Sample Page 6 of 20 1.6Test Duration Page 6 of 20 1.7Country of Origin Page 6 of 20 1.8 Additional Information of EUT Page 7 of 20 2.0Technical Details 2.1Investigations Requested Page 8 of 20 2.2Test Standards and Results Summary Page 8 of 20 3.0Test Results 3.1Emission Page 9-13 of 20 3.2Bandwidth Measurement Page 14-15 of 20 Date: 2002-07-11 TEST REPORT Page 3 of 20 No.: HM108264 Appendix A List of Measurement Equipment Page 16 of 20 Appendix B Duty Cycle Correction During 100 msec Page 17-18 of 20 Appendix C Photographs Page 19-20 of 20 Date: 2002-07-11 TEST REPORT Page 4 of 20 No.: HM108264 CONCLUSION The submitted product was deemed to have COMPLIED with the requirements of Federal Communications Commission [FCC] Rules and Regulations Part 15. The tests were performed in accordance with the standards described above and on Section 2.2 in this Test Report. Verify byPatrick Wong for Chief Executive Date: 2002-07-11 TEST REPORT Page 5 of 20 No.: HM108264 1.0General Details 1.1Test Laboratory The Hong Kong Standards and Testing Centre Ltd. EMC Laboratory 10 Dai Wang Street, Taipo Industrial Estate New Territories, Hong Kong Telephone:852 2666 1888 Fax:852 2664 4353 1.2Applicant Details Applicant RC ERTL, INC. Units 901-6, 9 th Floor, Tower One, Enterprise Square, 9 Sheung Yuet Road, Kowloon Bay, Kowloon, Hong Kong. Telephone:852 2751 7239 Fax:852 2755 5186 HKSTC Code Number for ApplicantLUC001 Manufacturer LUNG CHEONG TOYS LIMITED. Lung Cheong Building, 1 Lok Yip Road, Fanling, N.T., H.K. Telephone:852 2677 6699 Fax:852 2682 2161 Date: 2002-07-11 TEST REPORT Page 6 of 20 No.: HM108264 1.3Equipment Under Test [EUT] Description of Sample Product:Harley RC Motorcycle 27MHz Manufacturer:Lung Cheong Toys Limited. Brand Name:ERTL Model Number:34750 Input Voltage:9Vd.c (“6F22” size battery x 1) 1.3.1Description of EUT Operation The Equipment Under Test(EUT) is an RC Ertl, Inc., Harley RC Motorcycle 27MHz. The transmitter is a 2 button transmitter. The EUT continues to transmit while button is being pressed. Modulation by transistor and tape is pulse modulation. 1.4Date of Order 2002-07-05 1.5Submitted Sample(s): 3 Samples per model 1.6Test Duration 2002-07-11 1.7Country of Origin China Date: 2002-07-11 TEST REPORT Page 7 of 20 No.: HM108264 1.8Additional Information of EUT SubmittedNot Available User Manual Part List Circuit Diagram Printed Circuit Board [PCB] Layout Block diagram FCC ID Label Date: 2002-07-11 TEST REPORT Page 8 of 20 No.: HM108264 2.0Technical Details 2.1Investigations Requested Perform ElectroMagnetic Interference measurement in accordance with FCC 47CFR [Codes of Federal Regulations] Part 15 and ANSI C63.4:2000 for FCC Certification. 2.2Test Standards and Results Summary Tables EMISSION Results Summary Test ConditionTest RequirementTest MethodClass /Test Result SeverityPassFailedN/A Field Strength of Fundamental Emissions & Spurious Emissions FCC 47CFR 15.227ANSI C63.4:2000N/A Radiated Emissions, 30MHz to 1GHz FCC 47CFR 15.209ANSI C63.4:2000Class B Conducted Emissions on AC, 0.45MHz to 30MHz FCC 47CFR 15.207ANSI C63.4:2000Class B Note: N/A - Not Applicable Date: 2002-07-11 TEST REPORT Page 9 of 20 No.: HM108264 3.0Test Results 3.1Emission 3.1.1Radiated Emissions Test Requirement:FCC 47CFR 15.227 Test Method:ANSI C63.4:2000 Test Date:2002-07-11 Mode of Operation:On mode Test Method: The sample was placed 0.8m above the ground plane on the OATS *. Measurements in both horizontal and vertical polarities were performed. During the test, each emission was maximized by: having the EUT continuously working, investigate all operating modes, rotated about all 3 axis (X, Y & Z) to obtain worst position, manipulating interconnecting cables, rotating turntable, varying antenna height from 1m to 4m in both horizontal and vertical polarizations. The emissions worst-case are shown in Test Results of the following pages. *:OATS [Open Area Test Site] located at HKSTC with a metal ground plane on filed with the FCC pursuant to section 2.948 of the FCC rules, with Registration Number: 90657. Test Setup: EUT distance = 3m Pre -Amplifier Receiver Turn Table Computer Ground plane Date: 2002-07-11 TEST REPORT Page 10 of 20 No.: HM108264 Limits for Field Strength of Fundamental Emissions [FCC 47CFR 15.227]: Frequency Range of Fundamental Field Strength of Fundamental Emission [Peak] Field Strength of Fundamental Emission [Average] [MHz][μV/m][μV/m] 26.96-27.28100,00010,000 Results: FrequencyCorrectionLimit @3mAntenna FactorPolarity MHzdB μ V/m μ V/m 27.1544.222.366.52,113.5100,000Vertical dB μ V/m Field Strength Field Strength of Fundamental Emissions Peak Value Measured Level @3m dB μ V/m Field Strength μ V/m FrequencyCorrectionLimit @3mAntenna FactorPolarity MHzdB μ V/m μ V/m 27.1538.422.360.71,083.9100,00Vertical μ V/mdB μ V/m Field Strength Field Strength of Fundamental Emissions Average Measured Level @3m dB μ V/m Field Strength According to FCC 47CFR15.35, the limit on the radio frequency emissions as measured using instrumentation with a peak detector function, corresponding to 20dB above the maximum permitted average limit for the frequency being investigated unless a different peak emission limit is otherwise specified in the rules. Remarks: *: Adjusted by Duty Cycle = -5.8dB *:Linear interpolations Correction Factor included Antenna Factor and C…

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TEST SET UP PHOTOGRAPH OF THE PRODUCT MEASUREMENT OF RADIATED EMISSION TEST SET UP