RLRCWH900D009150BDigital Wireless Mobile Base Unit

USERS MANUAL MODEL NO. : CWH-900D 900MHz ISM BAND DIGITAL WIRELESS MOBILE HEADSET ......................................................... .................................... ................................. ............................................. ................................................... ........................... ........................ .......................................... ...................................................... ........................................................................ ....................................... User Manual 1 2 2 1 “” 3 4 3 “” “” 2 2 2 4 2 2 4 2 2 4 2 2 4 2 ’ 3 ’ 2 ’ ’ ’ ’ ... ’

AA BB CC DD EE 5 5 4 4 3 3 2 2 1 1 Title Size Document Number R ev Date: Sheet of <Doc> 0 CWH-900D BASE BLOCKDIAGRAM A4 012 Wednesday, Sept ember 17, 2003 907~922MHZ CWH-900D BASE BLOCKDIAGRAM MIC JACK SPK JACK PHASE SHIFTER 39MHZ MODULATOR PFD DIVIDER LIMITERLIMITER FSKDEMODULATOR D/AA/D AUDIO AMP ANTENNA SWITCH MCU AMPAMP LOOP FILTER TALK PA BPF I AMP LPF VCO Q AMP 907~922MHZ BUFFER AMP BPF LNA 902~926MHZ LPF

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 October 15, 2003 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: Cybertree Co., Ltd. FCC ID: RLRCWH900D009150B To whom it may concern, Request is hereby submitted, on behalf of my client, Cybertree Co., Ltd., hold 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: Cybertree Co., Ltd. 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.G. Gwon / Director Onetech Corp. Email: [email protected]

FCCID.: RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCCID.: RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCCID.: RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCCID.: RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCCID.: RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab.

FCC ID.: RLRCWH900D009150B File No. : E03OR-023 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 : RLRCWH900D009150B FCC ID AREA

FCC ID. : RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab.

Page 1 of 14 FCC ID.: RLRCWH900D009150B File No.: E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-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 : E03OR-023 Applicant : CYBERTREE CO., LTD. Address : 409-7, Chungcheon 2-dong, Pupyung-gu, Incheon, Korea Manufacturer : CYBERTREE CO., LTD. Address : 409-7, Chungcheon 2-dong, Pupyung-gu, Incheon, Korea Type of Equipment : WIRELESS DIGITAL MOBILE HEADSET FCC ID. : RLRCWH900D009150B Model Name : CWH-900D Serial number : N/A Total page of Report : 13 pages (including this page) Date of Incoming : September 26, 2003 Date of Issuing : October 10, 2003 SUMMARY The equipment complies with the regulation; FCC PART 15 SUBPART C Section 15.249 This test report contains only the result of a single test of the sample supplied for the examination. It is not a general 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 Div. EMC Div. ONETECH Corp. ONETECH Corp. Page 2 of 14 FCC ID.: RLRCWH900D009150B File No.: E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (Rev.0) HEAD OFFICE : #505 SK APT. Factory 223-28, Sangdaewon 1 Dong, Jungwon-Gu, Seongnam-City, Gyeonggi-Do, 462-121, Korea (TEL: +82-31-746-8500, FAX: +82-31-746-8700) EMC Testing Dept : 426-1 Daessangryung-Ri, Chowol-Myun, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. CONTENTS Page 1. VERIFICATION OF COMPLIANCE ................................................................................................................................ 3 2. GENERAL INFORMATION ............................................................................................................................................... 4 2.1 PRODUCT DESCRIPTION.................................................................................................................................................... 4 2.2 MODEL DIFFERENCES:...................................................................................................................................................... 4 2.3 RELATED SUBMITTAL(S) / GRANT(S)................................................................................................................................4 2.3 TEST SYSTEM DETAILS...................................................................................................................................................... 5 2.4 TEST METHODOLOGY....................................................................................................................................................... 5 2.5 TEST FACILITY................................................................................................................................................................... 5 3. SYSTEM TEST CONFIGURATION.................................................................................................................................. 5 3.1 JUSTIFICATION................................................................................................................................................................... 5 3.2 EUT EXERCISE SOFTWARE............................................................................................................................................... 5 3.3 EQUIPMENT MODIFICATIONS........................................................................................................................................... 5 3.4 CONFIGURATION OF TEST SYSTEM.................................................................................................................................. 6 3.5 ANTENNA REQUIREMENT.................................................................................................................................................. 6 4. PRELIMINARY TEST ......................................................................................................................................................... 6 4.1 AC POWER LINE CONDUCTED EMISSIONS TESTS........................................................................................................... 6 4.2 RADIATED EMISSIONS TESTS............................................................................................................................................ 6 5. FINAL RESULT OF MEASURMENT ............................................................................................................................... 7 5.1 CONDUCTED EMISSION TEST............................................................................................................................................ 7 5.2 FIELD STRENGTH............................................................................................................................................................... 9 5.2.1 Filed Strength of the Fundamental Frequency.......................................................................................................9 5.2.2 Emission of radiated outside of the specified frequency band..............................................................................10 5.2.3 Spurious Emission Test, for harmonics..................................................................................................................12 6. FIELD STRENGTH CALCULATION ..................................................................................................................…

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FCC ID: RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (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, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID: RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (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, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID: RLRCWH900D009150B File No. : E03OR-023 It should not be reproduced except in full, without the written approval of ONETECH. FCC-003 (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, Gwangju-Gun, Gyeonggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab.