P7KDTX01FM Transmitter

ANY CHANGES OR MODIFICATIONS IN CONSTRUCTION OF THIS DEVICE WHICH ARE NOT EXPRESSLY APPROVED BY THE PARTY RESPONSIBLE FOR COMPLIANCE COULD VOID THE USER'S AUTHORITY TO OPERATE THE EQUIPMENT. FCC WARNINGS :

55 44 33 22 11 D D C C B B A A 3V R-CHL-CH 12~24V GND LINE_INPUT DC_INPUT FM TRANSMITTER U1 BH1417F DTX-01 BLOCK DIAGRAM DC_OUT KDV1472 Q10 PLL/MIX 7.6MHz REGULATOR ISOLATED DC-DC CONVERTER 22 1 17 8 13 14 11 79 UCC2813-3 5 PS2701-1IRFR220NNJM431KTC3911 VD1 KTC3880 INOUT COMP U51, U52, U53, U54, Q51, VIN VOUT SW2 88.1MHz/88.9MHz CLOCK ANTENNA U3 5V VIN VOUT GND

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 November 21, 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: DIASONIC TECHNOLOGY CO., LTD. FCC ID: P7KDTX01 To whom it may concern, Request is hereby submitted, on behalf of my client, DIASONIC TECHNOLOGY CO., LTD., 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: DIASONIC TECHNOLOGY 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.K. Kwon / Director Onetech Corp. Email: [email protected]

1 Mike Kuo From: GeaWon, Lee [[email protected]] Sent: November252003Tuesday 8:28 PM To: CCS - Mikekuo (mikekuo) Subject: FW: Diasonic Technology FCC ID:P7KDTX01, AN03T3436 DataSheet.pdfP7KDTX01_REPORT .doc Dear Mr. Mike Kuo It was my mistyping to record 37.40dBuV/[email protected]. Original emission at 876.92MHz was measured 35.40dBuV/m. Refer to attached original data sheet. I re-send a revised test report. Please find enclosed a test report. Best regards GeaWon, Lee / Onetech Corp. EMC -----Original Message----- From: Y. G. Gwon [mailto:[email protected]] Sent: Wednesday, November 26, 2003 12:36 PM To: ???G?? Subject: FW: Diasonic Technology FCC ID:P7KDTX01, AN03T3436 Best regards, Y. G. Gwon ONETECH Testing & Eval. Lab. EMC Div. email: [email protected] TEL: +82-31-765-8289 FAX: +82-31-766-2904 -----Original Message----- From: Mike Kuo [mailto:[email protected]] Sent: Wednesday, November 26, 2003 12:32 PM To: Y. K. Kwon (E-mail) Subject: Diasonic Technology FCC ID:P7KDTX01, AN03T3436 Question #1: Per section 15.215 (b ) of FCC rules, in no case shall the level of the unwanted emissions from an intentional radiator operating under these additional provisions exceed the field strength of the fundamental emission. The highest measured fundamental field strength is 35.75dBuV/m but the highest unwanted emission with 88.1 MHz fundamental frequency is measured 37.40dBuV/[email protected]. Please address this non-compliance issue. Best Regards Mike Kuo 2 Compliance Certification Services 561F Monterey Road Morgan Hill CA 95037 Tel: (408)463-0885 x: 105 Fax: (408)463-0888 http://www.ccsemc.com

FCC ID. : P7KDTX01 File No. : E03NR-059 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, Kwangju-City, Kyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : P7KDTX01 File No. : E03NR-059 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, Kwangju-City, Kyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : P7KDTX01 File No. : E03NR-059 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, Kwangju-City, Kyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab.

FCC ID. : P7KDTX01 File No. : E03NR-059 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, Kwangju-City, Kyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. IDENTIFICATION LABEL: PROPOSED FCC ID LABEL The FCC ID shall be permanently affixed to the bottom side of the equipment

FCC ID. : P7KDTX01 File No. : E03NR-059 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, Kwangju-City, Kyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : P7KDTX01 File No. : E03NR-059 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, Kwangju-City, Kyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. FCC ID. : P7KDTX01 File No. : E03NR-059 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, Kwangju-City, Kyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab.

Page 1 of 13 FCC ID. : P7KDTX01 File No. : E03NR-059 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, 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 : E03NR-059 Applicant : DIASONIC TECHNOLOGY CO., LTD. Address : 321-43, Suksu-Dong, Manan-Ku, Anyang-City, Kyungki-Do, Korea Manufacturer : DIASONIC TECHNOLOGY CO., LTD. Address : 321-43, Suksu-Dong, Manan-Ku, Anyang-City, Kyungki-Do, Korea Type of Equipment : FM TRANSMITTER FCC ID. : P7KDTX01 Model Name : DTX-01 Multiple Model Name : N/A Serial number : N/A Total page of Report : 13 pages (including this page) Date of Incoming : October 06, 2003 Date of Issuing : November 21, 2003 SUMMARY The equipment complies with the regulation of FCC CRF 47 PART 15, SUBPART C, SECTION 15.239. This test report contains only the results 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 13 FCC ID. : P7KDTX01 File No. : E03NR-059 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, 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 .............................................................................................................................3 2. GENERAL INFORMATION............................................................................................................................................4 2.1 PRODUCT DESCRIPTION.................................................................................................................................................4 2.2 MODEL DIFFERENCES....................................................................................................................................................4 2.3 RELATED SUBMITTAL(S) / GRANT(S)............................................................................................................................4 2.4 TEST SYSTEM DETAILS..................................................................................................................................................4 2.5 TEST METHODOLOGY....................................................................................................................................................4 2.6 TEST FACILITY...............................................................................................................................................................4 3. SYSTEM TEST CONFIGURATION...............................................................................................................................5 3.1 JUSTIFICATION...............................................................................................................................................................5 3.2 EUT EXERCISE SOFTWARE............................................................................................................................................5 3.3 CABLE DESCRIPTION.....................................................................................................................................................5 3.4 NOISE SUPPRESSION PARTS ON CABLE.........................................................................................................................5 3.5 EQUIPMENT MODIFICATIONS........................................................................................................................................6 3.6 CONFIGURATION OF TEST SYSTEM...............................................................................................................................6 3.7 ANTENNA REQUIREMENT..............................................................................................................................................6 4. PRELIMINARY TEST ......................................................................................................................................................7 4.1 AC POWER LINE CONDUCTED EMISSION TEST............................................................................................................7 4.2 RADIATED EMISSION TEST............................................................................................................................................7 5. FINAL RESULT OF MEASURMENT ............................................................................................................................8 5.1 RADIATED EMISSION TEST (WITHIN THE PERMITTED 200KHZ BAND)........................................................................8 5.2 RADIATED EMISSION TEST (OUTSIDE OF THE SPECIFIED 200KHZ BAND)...................................................................9 5.3 BANDWIDTH OF THE OPERATING FREQUENCY............................................................................................................10 6. FIELD STRENGTH CALCULATION ..........................................................................................................................12 7. LIST OF TEST EQUIPMENT......................................................................…

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FCC ID. : P7KDTX01 File No. : E03NR-059 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, Kwangju-City, Kyunggi-Do 464-860 Korea. (TEL: +82-31-765-8289, FAX: +82-31-766-2904) ONETECH Testing & Evaluation Lab. Radiated Emission Test