YEB-SM500WIRELESS MICROPHONE

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. NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications 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 help.

OPALUX ELECTRONICS MFY CO., LTD FCC ID: YEB-SM500 POWER OF ATTORNEY July 27, 2010 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, OPALUX ELECTRONICS MFY CO., LTD, hereby authorize Most Technology Service Co., Ltd. (Terry YANG/ Manager) on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Most Technology Service Co., Ltd. (Terry YANG/ Manager) on our behalf shall have the same effect as acts of our own. This authorization expires on August 28, 2010. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, OPALUX ELECTRONICS MFY CO., LTD 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. Name: Fu Jun Title: General Manager Date: July 27, 2010

FCC ID: YEB-SM500 Report No.:MOST100706F2 FRONT VIEW OF SAMPLE BACK VIEW OF SAMPLE FCC ID: YEB-SM500 Report No.:MOST100706F2 TOP VIEW OF SAMPLE BOTTOM VIEW OF SAMPLE

FCC ID: YEB-SM500 Report No.:MOST100706F2 INTERNAL PHOTO OF SAMPLE – 1 INTERNAL PHOTO OF SAMPLE - 2 FCC ID: YEB-SM500 Report No.:MOST100706F2 INTERNAL PHOTO OF SAMPLE - 3 INTERNAL PHOTO OF SAMPLE - 4

Operation Description Audio signal is input through MIC. After pre-amplified and noise compressed, the signal will mix with carrier signal controlled by PLL circuit to form modulation signal. The modulation signal will be transmitted to sky after RF amplification circuit and antenna radiation. Power is supplied by DC 3V battery, and the antenna is Internal.

元件名称spare part name元件标值元件封装用量备注 10R R0603 3 101R R0603 5 22K R0603 7 10K R0603 10 100K R0603 3 2K2 R0603 3 331R R0603 3 33K R0603 1 471R R0603 1 47K R0603 1 1K R0603 1 4K7 R0603 3 5K6 R0603 1 Resistance 6K8 R0603 1 751R R0603 1 101p C0603 4 102p C0603 9 103p C0603 8 104p C0603 6 0.5p C0603 1 15p C0603 2 201p C0603 2 22p C0603 2 2p C0603 2 30p C0603 1 4p C0603 1 50p C0603 4 10UC32162 1UC32162 4U7C321615 47UC35285 4148D32162 DiodeS4D32164 Electrolytic Capacitor Capacitor DF-2400手咪元件清单 7.5VD32161 PMBT3904ST0-23 2 N53W ST0-231 AMSSOT3434 VR103VR1031 Transistor 2SC1815ST0-233 LMX1602TSSO-162 JRC3404ASOT-81 HT1621BTSSO-482 mainfold blockME2101ASOT-892 ATMEGA48TQFP-322 101UH4*42 101JR33251 1R0R08055 电感10NR06035 LEDD12062 LEDLEDD08052 OSCMHz small LCD screen1 Screw1set A-81 1 A-801 PCB board DF-2400手咪按键一套 Cable1 Mic tube1套 net head1 aluminum head1

Tune Up Description Product WIRELESS MICROPHONE Brand Name OPALUX Model Number SM500 Power Supply DC 3 V by Battery Frequency Range 575.00 MHz-599.75 MHz Modulation Technique FM Antenna Gain 1.0 dBi Antenna Type Internal Temperature Range -20°C-50°C

Page 1 of 44 FCC 47 CFR PART 74 SUBPART H TEST REPORT For Applicant : OPALUX ELECTRONICS MFY CO., LTD Address : 21F, No.86 LONGWAN NEW RESIDENTIAL QUARTERS, NINGBO, CHINA Product Name : WIRELESS MICROPHONE Model Name : SM500,U660,SX4,BG4,SM920,SM9090,SM550,SM6060,SM2000, DM306,DM201 Brand Name : OPALUX, XSOUND, GEMINI, INTERNSOUND, GRAMMAR SOUND FCC ID : YEB-SM500 Report No. : MOST100706F1 Date of Issue : July 26, 2010 Issued by : Most Technology Service Co., Ltd. Address : No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China Tel : 86-755-8617 0306 Fax : 86-755-8617 0310 The report consists 44 pages in total. It may be duplicated completely for legal use with the approval of the applicant. It should no t be reproduced except in full, without the written approval of our laboratory. The client should not use it to claim produc t endorsement by MOST. The test results in the report only apply to the tested sample. The test report shall be invalid without all the signatures of testing engineers, reviewer and approver. FCC ID: YEB-SM500 Report No.:MOST100706F2 Page 2 of 44 CONTENTS 1. TEST RESULT CERTIFICATION ..................................................................................................3 2. Technical Information..................................................................................................................4 2.1 EUT Description ............................................................................................................................4 2.2 Objective........................................................................................................................................5 2.3 Test Standards and Results ...........................................................................................................5 3. Details of Test ..............................................................................................................................6 3.1 Identification of the Responsible Testing Laboratory .....................................................................6 3.2 Identification of the Responsible Testing Location .........................................................................6 3.3 List of Test Equipments..................................................................................................................7 3.4 Environmental Conditions..............................................................................................................8 4. Test Methodology ........................................................................................................................9 4.1 General Test Procedures ...............................................................................................................9 4.2 Description of Test Modes .............................................................................................................9 5. FCC Part 74 Requirements .......................................................................................................10 5.1 RF Output Power (Radiated) .......................................................................................................10 5.2 Modulation Deviation ...................................................................................................................13 5.3 Audio Frequency Response ........................................................................................................17 5.4 Occupied Bandwidth....................................................................................................................22 5.5 Radiated Spurious Emission........................................................................................................24 5.6 Frequency Stability vs. Temperature............................................................................................34 5.7 Frequency Stability vs. Voltage ....................................................................................................36 Annex A.................................................................................................................................................38 Photographs of the Test Setup ...........................................................................................................38 Annex B........................................................................................................................ .........................40 Photographs of the EUT ......................................................................................................................40 FCC ID: YEB-SM500 Report No.:MOST100706F2 Page 3 of 44 1. TEST RESULT CERTIFICATION Applicant Name: OPALUX ELECTRONICS MFY CO., LTD Address: 21F, No.86 LONGWAN NEW RESIDENTIAL QUARTERS, NINGBO, CHINA Manufacturer Name: OPALUX ELECTRONICS MFY CO., LTD Address: 21F, No.86 LONGWAN NEW RESIDENTIAL QUARTERS, NINGBO, CHINA Brand Name: OPALUX, XSOUND, GEMINI, INTERNSOUND, GRAMMAR SOUND Equipment Under Test: WIRELESS MICROPHONE Model Number: SM500, U660, SX4, BG4, SM920, SM9090, SM550, SM6060, SM2000, DM306, DM201 Series Model Difference description: The series models are different in market name with the same functions and the same PCB. FCC ID： YEB-SM500 Test Standard FCC 47 CFR Part 74 Subpart H File Number: MOST100706F1 Date of Test: July 09, 2010 - July 26, 2010 We (MOST) hereby certify that: The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI TIA 603:2004 and the energy emitted by the sample EUT tested as described in this report is in compliance with radiated emission limits of FCC Rules Part 74 H. The test results of this report relate only to the tested sample identified in this report. Tested by (+ signature): Petter Ping July 26, 2010 Review by (+ signature): July Wen July 26, 2010 Approved by (+ signature): Terry Yan…

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FCC ID: YEB-SM500 Report No.:MOST100706F2 Radio Emission Setup Photo