II650001FM Wireless Microphone Headset

FCC ID: II650001 PHOTOGRAPH OF THE PRODUCT FRONT VIEW OF THE PRODUCT REAR VIEW OF THE PRODUCT

FCC ID: II650001 LABEL LOCATION BOTTOM VIEW OF THE DEVICE WITH FCC ID LABEL FCC ID: II650001 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.

FCC ID: II650001 PHOTOGRAPH OF THE PRODUCT INNER CIRCUIT TOP VIEW INNER CIRCUIT BOTTOM VIEW

Circuit Description The 100.4MHz oscillator drives the base of Q3 the final/buffer amplifier. The modulation provided by Mic. The output of Q3 has the matching network consisting of L2 and C11 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 4.5 Volt (“L1154” size battery x 3) primary battery

Date: 2001-05-19 TEST REPORT Page 1 of 20 No.: HM104706 FCC PART 15 SUBPART C CERTIFICATION REPORT FOR LOW POWER TRANSMITTER TEST REPORT No.: HM104706 Equipment Under Test [EUT]: Headset FM Microphone Model Number: 50001 Applicant: Supersonics Elect. Co. FCC ID : II650001 Date: 2001-05-19 TEST REPORT Page 2 of 20 No.: HM104706 CONTENT: Cover Page 1 of 20 Content Page 2-3 of 20 Conclusion Page 4 of 20 1.0 General Details 1.1 Test Laboratory Page 5 of 20 1.2 Applicant Details Page 5 of 20 Applicant HKSTC Code Number for Applicant Manufacturer 1.3 Equipment Under Test [EUT] Page 6 of 20 Description of EUT operation 1.4 Date of Order Page 6 of 20 1.5 Submitted Sample Page 6 of 20 1.6 Test Duration Page 6 of 20 1.7 Country of Origin Page 6 of 20 1.8 Additional Information of EUT Page 7 of 20 2.0 Technical Details 2.1 Investigations Requested Page 8 of 20 2.2 Test Standards and Results Summary Page 8 of 20 3.0 Test Results 3.1 Emission Page 9-14 of 20 Date: 2001-05-19 TEST REPORT Page 3 of 20 No.: HM104706 3.2 Bandwidth Measurement Page 15-17 of 20 Date: 2001-05-19 TEST REPORT Page 4 of 20 No.: HM104706 Appendix A List of Measurement Equipment Page 18 of 20 Appendix B Photographs Page 19-20 of 20 Date: 2001-05-19 TEST REPORT Page 5 of 20 No.: HM104706 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. Law Man Kit Steven Tsang Patrick Wong Testing Engineer Verify by Patrick Wong for Managing Director Date: 2001-05-19 TEST REPORT Page 6 of 20 No.: HM104706 1.0 General Details 1.1 Test 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 1.2 Applicant Details Applicant Supersonics Elect. Co. Block D 6th Floor, Gee Chang Industrial Building, 108, Lok Shan Road, Tokwawan, Kowloon, Hong Kong. Telephone: 852 2765 7263 Fax: 852 2764 3419 HKSTC Code Number for Applicant SUE001 Manufacturer Shenzhen Jin Hing Supersonics Electric Co., Ltd. Block 115, Shenbu Sha Tsui Ind. Area, Shenzhen, China Telephone: 86 755 337203 Fax: 86 755 337204 Date: 2001-05-19 TEST REPORT Page 7 of 20 No.: HM104706 1.3 Equipment Under Test [EUT] Description of Sample Product: Headset FM Microphone Manufacturer: Shenzhen Jin Hing Supersonics Electric Co., Ltd. Brand Name: N/A Model Number: 50001 Input Voltage: 4.5Vd.c (“L1154” size battery x 3) 1.3.1 Description of EUT Operation The Equipment Under Test (EUT) is an Rising Sun Industrial Ltd., 100.4MHz Headset FM Microphone. The EUT continues to transmit while switch on. It is voice transmission, Modulation by Mic. and tape is frequency modulation. 1.4 Date of Order 2001-05-05 1.5 Submitted Sample(s): 1 Sample 1.6 Test Duration 2001-05-16 1.7 Country of Origin Hong Kong Date: 2001-05-19 TEST REPORT Page 8 of 20 No.: HM104706 1.8 Additional Information of EUT Submitted Not Available User Manual Part List Circuit Diagram Printed Circuit Board [PCB] Layout Rating Label Block diagram FCC ID Label Date: 2001-05-19 TEST REPORT Page 9 of 20 No.: HM104706 2.0 Technical Details 2.1 Investigations Requested Perform ElectroMagnetic Interference measurement in accordance with FCC 47CFR [Codes of Federal Regulations] Part 15 and ANSI C63.4:1992 for FCC Certification. 2.2 Test Standards and Results Summary Tables EMISSION Results Summary Test Condition Test Requirement Test Method Class / Test Result Severity Pass Failed N/A Field Strength of Fundamental Emissions & Spurious Emissions FCC 47CFR 15.239 ANSI C63.4:1992 N/A Radiated Emissions, 30MHz to 1GHz FCC 47CFR 15.209 ANSI C63.4:1992 Class B Conducted Emissions on AC, 0.45MHz to 30MHz FCC 47CFR 15.207 ANSI C63.4:1992 Class B Note: N/A - Not Applicable Date: 2001-05-19 TEST REPORT Page 10 of 20 No.: HM104706 3.0 Test Results 3.1 Emission 3.1.1 Radiated Emissions Test Requirement: FCC 47CFR 15.239 & 15.209 Test Method: ANSI C63.4:1992 Test Date: 2001-05-16 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: 2001-05-19 TEST REPORT Page 11 of 20 No.: HM104706 Limits for Field Strength of Fundamental Emissions [FCC 47CFR 15.239]: Frequency Range of Fundamental Peak Limits Average Limits [MHz] [μV/m] [μV/m] 88-108 2,500 250 Results: Field Strength of Fundamental Emissions Peak Value Frequency Level @3m Correction Factor Field Strength Field Strength Limit ** @3m Antenna Polarity MHz dBμV dB/m dBμV/m μV/m μV/m 100.4 31.2 15.2 46.4 208.9 2,500.0 Vertical Field Strength of Spurious Emissions Peak Value Frequency Level @3m Correction Factor Field Strength Field Strength Limit ** @3m Antenna Polarity MHz dBμV dB/m dBμV/m μV/m μV/m 200.8 12.0 14.5 26.5 21.1 150.0 Horizontal 301.2 15.5 20.6 36.1 63.8 200.0 Horizontal Date: 2001-05-19 TEST REPORT Page 12 of 20 No.: HM104706 Result: Field Strength of Fundamental Emissions Average Value * Frequency Level @3m Correction Factor Field Strength Field Strength Limit ** @3m Antenna Polarity MHz dBμV dB/m dBμV/m μV/m μV/m 100.4 30.6 15.2 45.8 195.0 250.0 Vertical Field Strength of Spurious Emi…

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FCC ID: II650001 26dB Bandwidth of Fundamental Emission

Marianne Bosley To:[email protected] Cc:[email protected] Hi Alice, I didn't know if you received the previous email of today (it was in word perfect), so I am sending it again. Below are the continued technical issues, sent previously by Chris Harvey on July 10, that we need to resolve before we can grant. If you have any questions, please let me know. Alice, we have reviewed the attachments that you sent. However you still have not answered the specific question #2. The Engineer who performed the technical Review of this information noted the following: "...they are describing how the EUT is kept from being re-tuned after it is set at the factory. We want to know if, in its design, the EUT uses any means to limit the level of the input signal (typically clipping diodes) to keep the FM signal from deviating more than +/- 100 kHz regardless of the amplitude (volume) of the input signal." I hope this continues to clarify the requirement so you will be able to provide the appropriate information. Best regards, Marianne T. Bosley EMC Admi nistrator 410-354-3300, ext. 412

FCC ID: II650001 TEST SET UP PHOTOGRAPH OF THE PRODUCT Measurement of Radiated Emission Test Set up