UGQSN-U90Wireless Microphone

UHF-SRYSTAL SN-U90 MIC-IN AF AMP Compres sor OSC*30 RF AMP ANT CRYSTAL 21.88MHz

SCS-F18: Project and Product Certification Representative Authorization Letter Page 1 of 2 Rev 2.0 2206 Ringwood Avenue San Jose, CA 95131 Tel: 408-526-1188 Fax: 408-526-1088 Email: [email protected] Project and Product Certification Representative Authorization Letter Revision History Reason for Amendment (current / obsolete) From To Approved Date Initial Release (current) 1.0 1.0 Nov-14-2006 Revised wording (current) 1.0 2.0 Sept–25-2007 SCS-F18: Project and Product Certification Representative Authorization Letter Page 2 of 2 Rev 2.0 EnPing OKSN Electronics Technology Co.,Ltd 2010-12-14 To: SIEMIC, INC. 2206 Ringwood Avenue, San Jose, CA 95131 USA Dear Sir/Madam, Re: Project and Product Certification Representative Authorization Letter We, _ EnPing OKSN Electronics Technology Co.,Ltd hereby authorize SIEMIC, INC. to act as a Certification Body for certifying for the following project(s): Wireless Microphone SN-U90/SN-U70,SN-U71,SN-8002,SN-U86,SN-777, SN-666,SN-58,SN-U73,SN-U82,SN-U5000,SN-P500, SN-P400,SN-P820,,SN-680,SN-U81,SN-U660, 49BWWU9000，49BWWU1000， We affirm that between SIEMIC and EnPing OKSN Electronics Technology Co.,Ltd, any difference in understanding, including test plan, measurement methods, applicable standards and relevant procedures and processes have been resolved prior to commencement of testing activities. Sincerely, Client’s signature Client’s name / title : Manager , Chensheng Lu Con tact information / address: No.180 South Suburb Industrial area,Enping City,Guangdong,China

SN-U90

FCC ID Label Sample FCC ID: UGQSN-U90 This device complies with Part 74 of the FCC Rules.

Label location of SN-U90

SN-U90

Wireless microphone circuit description of SN-U90 AUDIO CIRCUIT The audio signal is injected via the microphone sensor into the audio circuit composed of the op. amp IC1 （4558）, & compandor IC2 （571）. The signal is compressed via the compandor circuit at a 2:1 ratio and is pre-emphasized by U2. The level of the output signal is controlled by the resistors 4.7k, 1k and 10k VR. MODULATOR CIRCUIT The modulator circuit is a direct FM type built around the local oscillator controlled by Crystal X1 (37 times to local ocsillartor), variable capacitance diode D1 BB179, variable conductor IFT 1~5 (62/62/31/31/71 uH), Q1~6(T33), variable capacitor C45(3pF). The modulated output from the oscillator is sent to the RF pre-amp and RF final amplifier which boosts the output to a nominal level (<1mW). RF PRE-AMPLIFIER & FINAL AMPLIFIER The 2-stage amplifier, consist of two transistors Q6, Q7 (N42 x 2), culminating with a normal transmitter output of <1mW. The output filter (VC49, C53~55, L8-11) suppress the output harmonics and matches the output to the integrate antenna. POWER STEADY CIRCUIT 2 transistors Q9,Q10(L6/113T) for up-voltage, IC3 (9104) and U1 (7150) provide voltage to modulation and amplifier respectively. The battery used as ant, Q8 & LED D3 for power display.

Tune up Procedure I would like to confirm this device does not have tune up information, because the tune up is fixed by the manufacturer. Therefore, the user cannot tune up the device. Sincerely yours, Signature: Clients name / title : Manager , Chensheng Lu Phone: 0750-7777832 Fax: 0750-7777732 Address: No.180 South Suburb Industrial area,Enping City,Guangdong,China

Bill of Material for U58DTX.Bom Used Part Type Designator Footprint ==== ============ ========== ========== 1 0.33uF C17 3 0R R9 R20 R26 2 1.5T L1 L2 5 1K R10 R17 R22 R30 R38 1 1M R44 2 1P C22 C31 2 1R0 L12 L13 2 1uF C10 C11 2 2.2uF C2 C8 1 2AA1.5V BATT 1 2K2 R45 2 2P C33 C39 2 3K3 R2 R8 2 3P C38 C54 6 4.7uF C9 C13 C16 C57 C64 C66 1 4K7 R13 1 5K6 R1 1 5P C42 2 6.8nH L3 L4 2 6P C34 C50 2 7P C44 C46 2 8N2 L10 L11 2 9P C24 C25 12 10K R5 R11 R12 R18 R19 R21 R24 R27 R33 R35 R40 VR1 2 10NH L5 L8 2 10P C32 C58 2 10R R28 R31 1 10uF C15 1 12P C30 3 15K R6 R7 R41 1 15P C18 2 18K R3 R29 1 18P C35 1 20P C40 2 22K R23 R37 1 22P C23 3 22uF C60 C61 C67 2 30P C20 C53 2 31 T3 T4 4 33K R4 R25 R32 R42 1 33P C19 1 33R R39 1 47K R16 2 62 T1 T2 2 100K R14 R15 3 100P C1 C3 C7 2 100R R34 R36 4 100UH L6 L7 L14 L15 10 102P C6 C12 C21 C26 C28 C29 C37 C47 C55 C56 11 103P C5 C27 C36 C41 C43 C48 C52 C59 C62 C63 C65 1 104P C51 1 113T Q10 1 150K R43 1 220P C14 1 7150 U1 1 9104 IC3 1 AMS Q5 1 ANTENNA 1 BB179 D1 1 C4 4.7uF 1 CD15R MIC1 1 JRC4558 IC1 1 JRC4558 1C1 DIP8 3 L6 Q2 Q8 Q9 1 LED D3 2 N42 Q6 Q7 1 R22 L9 2 SS-23D03VG3 K1-1 K1-2 1 T1 T5 2 T33 Q1 Q3 1 TX X1 1 UTC571 IC2 2 VC/3P C45 C49 1 W2 Q4 2 ss14 D2 D4

FCCID: UGQSN-U90 Report Number: HST201011-4321-FCC Page 1 of 20 Test Report Applicant: ENPING OKSN ELECTRONICS TECHNOLOGY CO.,LTD Address of Applicant: NO.180 South Suburb Industrial Area, Enping City, Guangdong Province, China. Equipment Under Test (EUT): EUT Name: Wireless Microphone Model No.: SN-U90, SN-U70, SN-U71, SN-8002, SN-U86, SN-777, SN-666, SN-58, SN-U73, SN-U82, SN-U5000, SN-P500, SN-P400, SN-P820, SN-680, SN-U81, SN-U660, 49BWWU9000，49BWWU1000 Trade Mark: NA Serial No.: Not supplied by client Standards: FCC PART 74H:2010 Date of Receipt: Dec. 5, 2010 Date of Test: Dec. 8 to 10, 2010 Date of Issue: Dec 13, 2010 Test Result : PASS* z In the configuration tested, the EUT complied with the standards specified above. Authorized Signature: Henly Xie / Manager This report refers to the General Conditions for Inspection and Testing Services, printed overleaf This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in this report. This report may only be reproduced and distributed in full. If the product in this report is used in any configuration other than that detailed in the report, the manufacturer must ensure the new system complies with all relevant standards. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. All test results in this report can be traceable to National or International Standards. The test report prepare by: Guangzhou Huesent Testing Service Co., Ltd. No.91, Dongguanzhuang Road, Tianhe District, Guangzhou, China. Tel: 86-20-28263298 Fax: 86-20-28263237 http://www.hst.org.cn E-mail: [email protected] REPORT No: HST201011-4321-FCC Page 2 of 20 Contents 1 TEST SUMMARY .................................................................................................................3 2 GENERAL INFORMATION .................................................................................................. 4 2.1 Client Information ..........................................................................................................4 2.2 General Description of E.U.T......................................................................................... 4 2.3 Details of E.U.T. ............................................................................................................ 4 2.4 Description of Support Units.......................................................................................... 4 2.5 Standards Applicable for Testing ................................................................................... 4 2.6 Test Location ................................................................................................................. 5 2.7 Deviation from Standards .............................................................................................. 5 2.8 Abnormalities from Standard Conditions ....................................................................... 5 3 EQUIPMENTS USED DURING TEST ................................................................................. 6 4 TEST RESULTS ................................................................................................................... 7 4.1 E.U.T. Operation Condition ........................................................................................... 7 4.2 Test Procedure & Measurement Data ........................................................................... 8 4.2.1 Carrier Radiated Power & Radiated Spurious Emissions ............................... 8 4.2.2 Occupied Bandwidth ..................................................................................... 11 4.2.3 Frequency Stability ....................................................................................... 14 4.2.4 Modulation Characteristics............................................................................ 16 4.3 EUT Constructional Details ......................................................................................... 19 REPORT No: HST201011-4321-FCC Page 3 of 20 1 Test Summary Test Test Requirement Standard Paragraph Result Carrier Radiated Power FCC Part 2.1046 74.861 e) 1) 54–72, 76–88 & 174–216 MHz bands, 50 mW 470–608 and 614–806 MHz bands, 250 mW PASS Modulation Deviation FCC Part 2.1047 74.861 e) 3) Within 75kHz PASS Frequency Stability FCC Part 2.1055 74.861 e) 4) <0.005% 50 ppm PASS Operating Bandwidth FCC Part 2.1049 c) 74.861 e) 5) Within 200kHz PASS Unwanted Radiation FCC Part 2.1049 c) 74.861 e) 6) within the mask PASS Radiated Spurious Emission FCC Part 2.1053 74.861 d) 3) < 43+10lgP(W) dB PASS Remark: ♣The EUT has one channel, which is located in the range 614.000 MHz to 698.000MHz . Only test result of a sample in channels 614.2 MHz, 656.1 MHz and 697.8 MHz were recorded in this report. REPORT No: HST201011-4321-FCC Page 4 of 20 2 General Information 2.1 Client Information Applicant: ENPING OKSN ELECTRONICS TECHNOLOGY CO., LTD Address of Applicant: NO.180 South Suburb Industrial Area, Enping City, Guangdong Province, China. 2.2 General Description of E.U.T. EUT Name: Wireless Microphone Item No.: SN-U90, SN-U70, SN-U71, SN-8002, SN-U86, SN-777, SN-666, SN-58, SN-U73, SN-U82, SN-U5000, SN-P500, SN-P400, SN-P820, SN-680, SN-U81, SN-U660, 49BWWU9000， 49BWWU1000 Tested SN-U90 only, since the other models are electrical identical to SN-U90 except the model No. and the color of outlook. Serial No.: Not supplied by client 2.3 Details of E.U.T. Power Supply: 3Vdc, 2 x AA size Battery Main Function: Wireless microphone system with an associated receiver for transmitting voice. The final amplifier Collector Voltage and Collector Current are 0.3V & 3.5mA respectively. Necessary Bandwidth: 2M+2DK= 2 x 30kHz + 2 x 20kHz x 1.0 = 10…

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FCC ID: UGQSN-U90 SETUP