OSRWL-T10002.4GHz Digital Wireless System for Audio

ONETECH Corp. http://www.onetech.co.kr 505 SK APT Factory, 223-28 Sangdaewon 1-Dong, Jungwon-Gu, Seongnam-City, Kyunggi-Do 462-121, Korea [ Tel ] 82-31-746-8500, [ Fax ] 82-31-746-8700 ONETECH December 28, 2004 FCC Laboratory 7435 Oakland Mills Road Columbia, MD 21046 Attention: Application Examiner Reviewing Engineer Re: Request for confidentiality per Section 0.459 of FCC Rules Applicant: Eastern Mastec Corporation FCC ID: OSRWL-T1000 To whom it may concern, Request is hereby submitted, on behalf of my client, Eastern Mastec Corporation, to withhold from public review certain portions of the application for equipment certification for the referenced FCC identifier. In particular, the following sections of the application and report are requested to be kept confidential: Schematics Operational Description Rationale for request for confidentiality: Eastern Mastec Corporation, has invested considerable time and materials in research and development to produce the referenced product. Disclosure of the confidential portions of this application to competitors would give them competitive advantage in developing similar products. If you have questions or need further information, please contact the undersigned. Sincerely, Y.K. Kwon / Chief Engineer Onetech Corp. Email: [email protected]

1 Helen Zhao Subject:FW: Eastern Mastec Corp., FCC ID: OSRWL-T1000, Assessment NO.: AN05T4476, Notice#1 WL-T1000_Report. doc WL-T1000_External _Photos.doc WL-T1000_Internal Photos.doc From: Y. G. Gwon Sent: Thursday, February 03, 2005 4:30 AM To: Helen Zhao Subject: Re: Eastern Mastec Corp., FCC ID: OSRWL-T1000, Assessment NO.: AN05T4476, Notice#1 Hi Helen, Enclosed please find a revised test report and internal photo and external photo. I really hope to clear all your kind comments. Thank you very much. Best Regards, Y.G. Gwon > -----Original Message----- > From: Compliance Certification Services [mailto:[email protected]] > Sent: Thursday, January 20, 2005 4:32 PM > Subject: Eastern Mastec Corp., FCC ID: OSRWL-T1000, Assessment NO.: > AN05T4476, Notice#1 > > > Question #1: Please resubmit external photos to include bottom view of the EUT, and the AC/DC adaptor, please clearly show if any suppression compoment is used. > > Question #2: Please resubmit internal photos. The one in the filing is for WL-R1000. > > Question #3: Section 5.4 of the test report indicated that "the Module in the EUT cannot operate with FHSS modulation with the EUT the module was inserted into a test jig instead of the EUT and then the jig was connected to a personal computer. For spurious emission testing, The RF Module was inserted into the EUT and receive audio signal from the signal generator and then transmitted the signal continuously." However the setup photo does not show test jig, or notebook computer, or signal generator. Please explain how you did RF conducted emission testing with test jig, please show setup diagram. Also please explain if you could not change L, M, H channel when the RF module was inside the EUT for RF conducted emission testing, how you could do radiated emission testing with L, M, H channel when the RF module was inside the EUT at that time. > > Question #4: Please provide calibration date of the testing equipment in the test report as requested by ANSI C63.4 section 10 Test Reports. The statement of "All test equipment used is calibrated on a regular basis." is not acceptable. > > Question #5: Section 10 (TIME OF OCCUPANCY) of the report indicated Time of Occupancy per 30 seconds. However, based upon FCC15.247(a)(1)(iii) you need to report Time of 2 Occupancy within 0.4 x 79 = 31.6 seconds. Please revise the report accordingly. > > Question #6: Section 13.5.2.1 of the test report indicated 2200-2300MHz as a restrict band for low channel, actually it should be 2310-2390MHz, please revise the report. > > Question #7: Section 13.5.2.2 of the test report did not report the radiated emission test results for middle channel. Please provide additional middle channel test data. > > Best Regards, > Helen Zhao > The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information within 30 days of the original e-mail date may result in application dismissal and forfeiture of the filing fee. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the e-mail address listed below the name of the sender.

FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab.

FCC ID.: OSRWL-T1000 File No.: E045R-073 ONETECH Testing & Evaluation Lab. IDENTIFICATION LABEL: PROPOSED FCC ID LABEL Due to the product size, only the FCC ID shall be permanently affixed to the rear side of the equipment and other information shall be placed in the instruction manual. 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 operations. Made in Korea FCC ID : OSRWL-T1000 FCC ID AREA

FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not reproduced except in full, written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyunggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-City, Gyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab.

Page 1 of 40 FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not be reproduced except in full, without the written approval of ONETECH. EMC-007(Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Kyunggi-Do, 462-121, Korea (TEL: 82-31-746-8500 FAX: 82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Kwangju-Kun, Kyunggi-Do 464-860 Korea. (TEL: 82-31-765-8289 FAX: 82-31-766-2904) ONETECH Testing & Evaluation Lab. ELECTROMAGNETIC EMISSION C OMPLIANCE REPORT FOR LOW-POWER, NON-LICENSED TRANSMITTER Test report file number : E045R-073 Applicant : Eastern Mastec Corp. Address : 5F Olympia Bldg., 196, Jamsil Bon-dong, Songpa-gu, Seoul Korea Manufacturer 1 st : Eastern Mastec Corp. Address : 308-12, Osan-ri, Chori-myun, Paju-shi, Gyeonggi-do, 413-521 Korea Manufacturer 2 nd : Eastern Acoustic Manufactory Co., Ltd Address : Huangpu Village Shajing Town, Boa’an, Shenzhen, China Type of Equipment : 2.4GHz Digital Wireless System for Audio FCC ID. : OSRWL-T1000 Model Name : WL-T1000 Serial number : None Total page of Report : 40 pages (including this page) Date of Incoming : January 16, 2004 Date of issue : May 31, 2004 SUMMARY The equipment complies with the regulation; FCC Part 15 Subpart C Section 15.247. This test report only contains the result of a single test of the sample supplied for the examination. It is not a generally valid assessment of the features of the respective products of the mass-production. Prepared by: Reviewed by: G. W. Lee/ Chief Engineer Y. K. Kwon/ Director EMC & Telecom Div. EMC & Telecom Div. ONETECH Corp. ONETECH Corp. Page 2 of 40 FCC ID. : OSRWL-T1000 File No. : E045R-073 It should not be reproduced except in full, without the written approval of ONETECH. EMC-007(Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Kyunggi-Do, 462-121, Korea (TEL: 82-31-746-8500 FAX: 82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Kwangju-Kun, Kyunggi-Do 464-860 Korea. (TEL: 82-31-765-8289 FAX: 82-31-766-2904) ONETECH Testing & Evaluation Lab. CONTENTS PAGE 1. VERIFICATION OF COMPLIANCE .............................................................................................5 2. TEST SUMMARY ..............................................................................................................................6 2.1 TEST ITEMS AND RESULTS..............................................................................................................................................6 2.2 ADDITIONS, DEVIATIONS, EXCLUSIONS FROM STANDARDS...........................................................................................6 2.3 RELATED SUBMITTAL(S) / GRANT(S)............................................................................................................................6 2.4 PURPOSE OF THE TEST...................................................................................................................................................6 2.5 TEST METHODOLOGY....................................................................................................................................................6 2.6 TEST FACILITY...............................................................................................................................................................6 3. GENERAL INFORMATION ............................................................................................................7 3.1 PRODUCT DESCRIPTION.................................................................................................................................................7 3.2 ALTERNATIVE TYPE(S)/MODEL(S); ALSO COVERED BY THIS TEST REPORT.................................................................7 4. EUT MODIFICATIONS ....................................................................................................................7 5. SYSTEM TEST CONFIGURATION ...............................................................................................8 5.1 JUSTIFICATION...............................................................................................................................................................8 5.3 PERIPHERAL EQUIPMENT...............................................................................................................................................8 5.4 MODE OF OPERATION DURING THE TEST.......................................................................................................................8 5.5 CONFIGURATION OF TEST SYSTEM...............................................................................................................................9 5.6 ANTENNA REQUIREMENT..............................................................................................................................................9 6. PRELIMINARY TEST ....................................................................................................................10 6.1 AC POWER LINE CONDUCTED EMISSIONS TESTS.......................................................................................................10 6.2 GENERAL RADIATED EMISSIONS TESTS......................................................................................................................10 7. 20DB BANDWIDTH.........................................................................................................................11 7.1 OPERATING ENVIRONMENT.........................................................................................................................................11 7.2 TEST SET-UP.................................................................................................................................................................11 7.3 TEST EQUIPMENT USED....................................................................................................................…

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FCC ID.: OSRWL-T1000 File No.: E045R-073 ONETECH Testing & Evaluation Lab. FCC ID.: OSRWL-T1000 File No.: E045R-073 ONETECH Testing & Evaluation Lab.