MQ5RF-688DTX2.4GHz Digital Wireless Headphone System

TELEAN TECHNOLOGY LTD. 1601-3, 16/F, FO Tan Industrial Center, 26-28 Au Pui Wan Street, Fo Tan Shatin, N.T.HONG KONG Federal Communications Commission Dear Sir: We, the undersigned, hereby authorize ETS Dr. Genz Taiwan PS Co., Ltd. to act on our behalf in all matters relating to application for“2.4GHz Digital Wireless Headphone System” ( Model : RF-6888D, FCC ID: MQ5RF-688DTX )” authorization, including the signing of all documents relating to these matters. Any and all acts carried out by ETS Dr.Genz Taiwan PS Co., Ltd. on our behalf shall have the same effect as acts of our own. The applicant certifies that in the case of an individual applicant ( e.g., corporation ), no party to the applicant is subject to a denial of federal benefits, that includes FCC benefits, pursuant to section 5301 of the Anti-drug abuse Act of 1988, 21 U.S.C. 862. For a definition of a “party” for these purposes See 47 C.F.R. 1.2002 (b). By: By: Mr. Alan Mok (Signature) (Printed) Title : Section Supervisor Applicant : TELEAN TECHNOLOGY LTD. Address : 1601-3, 16/F, FO Tan Industrial Center, 26-28 Au Pui Wan Street, Fo Tan Shatin, N.T.HONG KONG Tel : +(852)2693-2773 Fax: +(852)2693-1526 Date : Oct 06, 2005

TELEAN TECHNOLOGY LTD. 1601-3, 16/F, FO Tan Industrial Center, 26-28 Au Pui Wan Street, Fo Tan Shatin, N.T.HONG KONG Federal Communications Commission FCC ID: MQ5RF-688DTX Dear Sir: This is to request confidentiality on information submitted for above application. We would like to request confidentiality on some exhibits we submitted for above original application for the reason of trade secret. If those exhibits are available for public inspection, any person who once gets the information contained in those exhibits will be able to design and to make the same products very easily. This is a very serious problem and huge loss for us, because we did invest so much on it. Please be not made the Exhibit Types listed below routinely available for public inspection: Part List Schematics Block Diagram By: By: Mr. Alan Mok (Signature) (Printed) Title : Section Supervisor Applicant : TELEAN TECHNOLOGY LTD. Address : 1601-3, 16/F, FO Tan Industrial Center, 26-28 Au Pui Wan Street, Fo Tan Shatin, N.T.HONG KONG Tel : +(852)2693-2773 Fax: +(852)2693-1526 Date : Oct 06, 2005

ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. External Photo (TX) ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. (RX) ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd.

MPE Prediction FCC Rule: 15.247(b)(5) Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the Commission’s guidelines. See §1.1307(b)(1) of this Chapter. LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm2) Average time (minutes) (A)Limits For Occupational / Control Exposures 30-300 61.4 0.613 1.0 6 300-1500 ... ... F/300 6 1500-100,000 ... ... 5 6 (B)Limits For General Population / Uncontrolled Exposure 30-300 27.5 0.073 0.2 30 300-1500 ... ... F/1500 30 1500-100,000 ... ... 1.0 30 F = Frequency in MHz Prediction of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 PG S = -------------- 4πR² where: S = power density P = power input to the antenna G = power gain of the antenna in the direction of interest relative to an isotropic radiator R = distance to the center of radiation of the antenna Maximum peak output power at antenna input terminal: 11.77 (dBm) Maximum peak output power at antenna input terminal: 15.0314 (mW) Antenna gain(maximal): -3 (dBi) Prediction distance: 20 (cm) Prediction frequency: 2412 (MHz) MPE limit for uncontrolled exposure at prediction frequency: 1.0 (mW/cm²) Power density at prediction frequency: 0.0029903 (mW/cm²) The manual instruct the user to install and operate the device in a minimum distance of 20 cm between antenna and the users body.

ETS Dr.Genz Taiwan PS Co., Ltd. FCC Registration No.: 930600 Industry Canada filed test laboratory Reg. No. IC 5679 Accredited Testing Laboratory A2LA Cert.No.: 2300.01 PTCRB Accredited Type Certification Test House FCC TEST - REPORT FCC RULES PART 15 / SUBPART C FCC ID: MQ5RF-688DTX Test report no.: W6M20508-6150-C-1 ETS DR.GENZ TAIWAN PS CO., LTD. 6F, NO. 58, LANE 188, RUEY-KUANG RD., NEIHU, TAIPEI 114, TAIWAN, R.O.C. PHONE 886-2-66068877 FAX 886-2-66068879 ETS Dr.Genz Taiwan PS CO., Ltd. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. 2 of 35 TABLE OF CONTENTS 1 GENERAL INFORMATION ................................................................................................... 3 1.1 N OTES................................................................................................................................... 3 1.2 T ESTING LABORATORY......................................................................................................... 4 1.2.1 Location .......................................................................................................................4 1.2.2 Details of accreditation status ..................................................................................... 4 1.3 D ETAILS OF APPROVAL HOLDER............................................................................................ 4 1.4 A PPLICATION DETAILS.......................................................................................................... 5 1.5 G ENERAL INFORMATION OF TEST ITEM................................................................................. 5 1.6 T EST STANDARDS.................................................................................................................. 6 2 TECHNICAL TEST ..................................................................................................................7 2.1 S UMMARY OF TEST RESULTS................................................................................................. 7 2.2 T EST ENVIRONMENT.............................................................................................................. 7 2.3 T EST EQUIPMENT LIST.......................................................................................................... 8 3 TEST RESULTS (ENCLOSURE).......................................................................................... 13 3.1 P EAK OUTPUT POWER (TRANSMITTER) ............................................................................... 14 3.2 E QUIVALENT ISOTROPIC RADIATED POWER......................................................................... 15 3.2.1 Transmitter................................................................................................................. 15 3.3 RF EXPOSURE COMPLIANCE REQUIREMENTS..................................................................... 15 3.4 T RANSMITTER RADIATED EMISSIONS IN RESTRICTED BANDS............................................. 16 3.5 S PURIOUS EMISSIONS (TX) .................................................................................................. 17 3.6 M INIMUM 6 DB BANDWIDTH.............................................................................................. 20 3.7 P EAK POWER SPECTRAL DENSITY....................................................................................... 21 3.8 RADIATED EMISSIONS FROM RECEIVER SECTION ...............................................................22 3.9 P OWER LINE CONDUCTED EMISSION.................................................................................. 24 APPENDIX ....................................................................................................................................... 27 A PPENDIX A.................................................................................................................................... 28 A PPENDIX B .................................................................................................................................... 29 A PPENDIX C .................................................................................................................................... 30 A PPENDIX D.................................................................................................................................... 31 A PPENDIX E .................................................................................................................................... 32 A PPENDIX F .................................................................................................................................... 33 A PPENDIX G.................................................................................................................................... 34 A PPENDIX H.................................................................................................................................... 35 ETS Dr.Genz Taiwan PS CO., Ltd. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. 3 of 35 1 General Information 1.1 Notes The purpose of conformity testing is to increase the probability of adherence to the essential requirements or conformity specifications, as appropriate. The complexity of the technical specifications, however, means that full and thorough testing is impractical for both technical and economic reasons. Furthermore, there is no guarantee that a test sample which has Passed all the relevant tests conforms to a specification. Neither is there any guarantee that such a test sample will interwork with other genuinely open systems. The existence of the tests nevertheless provides the confidence that the test sample possesses the qualities as maintained and that is performance generally conforms to representative cases of communications equipment. The test results of this test report relate exclusively to the item tested as specified in 1.5. The test report may only …

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ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. Set Up Photo ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd. ETS DR.GENZ TAIWAN PS CO., LTD. Registration number: W6M20508-6150-C-1 FCC ID: MQ5RF-688DTX ETS Dr.Genz Taiwan PS Co., Ltd.