STESNCDMA24CRF Repeater

Jisan IT Venture Center 2,3F, 1004-9,10, Doksan-Dong, Gumcheon-Gu, Seoul, Korea Tel: +82-2-896-4101 Fax: +82-2-896-4107 [email protected] September 28, 2007 Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 In re: R-tron, Inc. FCC ID: STESNCDMA24C WirelessF Repeater (CDMA) Part 24 Certification Request for Confidentiality Gentlemen: In accordance with 0.459 of CFR 47, R-tron Inc. hereby requests confidentiality of the Block Diagram, Circuit Diagrams, Repeater Description, Technical Specification, Parts List, EUT Photographs and Tune-Up Procedure for the above-referenced certification application. These documents contain detailed system and equipment description and related information about the product which R-tron Inc. Considers to be proprietary, confidential, and a custom design and, otherwise, would not release to the general public. Since this design is a basis from which future technological products will evolve, R-tron Inc. considers this information to be of benefit to its competitors, such that the disclosure of the information in these documents would give competitors an unfair advantage in the market. Sincerely, R-tron, Inc.

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 October 2, 2007 RE: FCC ID: STESNCDMA24C_ATCB005490 Attention: Jay Kim I have a few comments on this Application. Please note that further comments may arise in response to answers provided to the questions below. 1. FYI – Please note that the space between “FCC ID” and “:” appears to be fairly great and may be confusing to the user. Please consider placing the “:” immediately after the “FCC ID” term in future applications. 2. Please note that the equipment code in not correct. You have put “PCE” as the equipment code, however, this is not a held to the ear device, but is an amplifier/repeater whose equipment code should be PCB. Please correct the 731 form to show the proper equipment code. 3. Please note that you have not put the description of the device on the 731 form in section 4(a). It is not know therefore how you want this device described on the grant. Unless informed otherwise, the description used will be taken from the authorization letter and be “ RF Repeater”. If a different description is desired, please correct the description field in the 731 form (section 4a). 4. Please note that the manual does not appear to contain the required rf exposure statement. Please provide a manual with the rf exposure statements requiring the 20cm separation distance from antenna and body. 5. Please note that the FCC has stated that when a device in the licensed services has a removable or external antenna, then the power listed on the grant should be the conducted antenna terminal power. Please note that as this is a repeater with external antenna connections, the power out of the device needs to be the antenna terminal conducted power and not the eirp power of the device. Please provide the antenna conducted power for this device. 6. Please note that when EIRP data is provided the FCC has stated that it is not sufficient to simply provide the end results in the measurement data, but that certain other information is needed. Please provide a report giving the power out of the signal generator, the gain of the substitution antenna and any cable loss from the signal generator to the antenna. Please also note that a sample calculation of how the power is obtained is required by 2.1046(c). 7. Please note that in section 4 of the test report you state the section deals with Output Power, but then you state “This spurious level is recorded.” Please note that as the output power would be a fundamental emission measurement it would not be classified as a spurious emission. Please explain and please correct as needed. 8. Please note that the manual states the input level can range from -43dBm to -56dBm. Please note that the input signal used during testing was only -56dBm. Please note that amplifiers, boosters and repeaters are to be tested using the highest input signal levels for the device. Please explain why -43dBm was not used as the input level for this device. Please re-measure if needed. Dennis Ward mailto:[email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. z Page 2 October 2, 2007 Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. 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 sender.

Jisan IT Venture Center 2,3F, 1004-9,10, Doksan-Dong, Gumcheon-Gu, Seoul, Korea Tel: +82-2-896-4101 Fax: +82-2-896-4107 [email protected] September 28, 2007 Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 In re: R-tron, Inc. FCC ID: STESNCDMA24C Wireless Repeater(CDMA) Part 24 Certification Request for Confidentiality To whom it may concern: We the undersigned R-tron,Inc. here by authorize ESTECH Co.,Ltd.(EST) of Korea to act on our behalf in all matters relating to all processes required in the FCC Part 24 approval and any communication needed with the national authority. Any and all acts carried out by EST on our behalf shall have the same effects as acts of our own. If you have any questions regarding the authorization, please don’t hesitate to contact us. Sincerely, yours Sincerely, Jong Hwa, Park/R&D Center Director R&D Center R-tron, Inc.

Jisan IT Venture Center 2,3F, 1004-9,10, Doksan-Dong, Gumcheon-Gu, Seoul, Korea Tel: +82-2-896-4101 Fax: +82-2-896-4107 [email protected] November 5, 2007 Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 In re: R-tron, Inc. FCC ID: STESNCDMA24C Wireless Repeater Part 24 Certification Request for Confidentiality Gentlemen: The service provider, Sprint with Nextel, requests to cover with 65MHz-bandwidth; from 1850MHz to 1915MHz of uplink and from 1930MHz to 1995MHz of downlink frequency. For the reasons, G-block is included as an operating frequency range of RSN-CDMA-24-C. Sprint with Nextel is planning to serve on G- block in the nearest future. Hence, R-tron supports the frequency plan of Sprint with Nextel. Sincerely, R-tron, Inc.

RSN-CDMA-24-C EUT-Photograph *Repeater* <Front View > < Rear View > <Top view> <Bottom view> <Right side view> <Left side view>

Product Name Model Name ͑͑ESTECHCO.,LTD. http://www.estech.co.kr FCC TEST REPORT Wireless Repeater(CDMA) RSN-CDMA-24-C Report Number : ESTR0710-0011 of 27 Applicant FCC ID ESTECH CO., LTD Rm. 1015 World Venture Center, 426-5 Gasan-dong, Geumcheon-gu, Seoul, 153-803, Korea. Tel:82-2-867-3201, Fax:82-2-867-3204 R-TRON, Inc. STESNCDMA24C Report Number : ESTR0710-0011 of 27 FCC ID : STESNCDMA24C Company Name Address Product Name Model No.Manufacturer Serial No. Country of origin Issued DateTested Date Test Result Pass 2007-10-01 2007-08-14 ~ 2007-10-01 Other ESTR0710-001 Jisan IT Venture Bldg., 2/3F, 1004-9/10, Doksan-Dong, Gumcheon- Gu, Seoul, Korea Wireless Repeater(CDMA) NONE R-TRON, Inc. ͑͑ESTECHCO.,LTD. http://www.estech.co.kr FCC Test Report Applicant Product Report Number RSN-CDMA-24-C KOREA R-TRON, Inc. Report Number : ESTR0710-0012 of 27 o This is certified that the above mentioned products have been tested for the sample provided by client. o No part of this document may not be duplicated or reproduced by any means without the express written permission of Estech Co., Ltd. Standard FCC PART 24 Subpart E Tested by Approved by I.K. Hong/ Engineer (Signature) Jay Kim/ Engineering Manager (Signature) Rm. 1015 World Venture Center, 426-5 Gasan-dong, Geumcheon-gu, Seoul, 153-803, Korea. Tel:82-2-867-3201, Fax:82-2-867-3204 ESTECH CO., LTD Report Number : ESTR0710-0012 of 27 FCC ID : STESNCDMA24C 1. General Information Page 4 2. Laboratory Information Page 5 3. Summary of Test Results Page 5 4. RF Output Power Page 6 5. Occupied Bandwidth Page 11 6. Spurious and Harmonic Emission at Antenna Terminal Page 14 7. Field Strength of Spurious Radiation Page 24 8. Frequency stability Page 27 Contents ͑͑ESTECHCO.,LTD. http://www.estech.co.kr Report Number : ESTR0710-0013 of 27Report Number : ESTR0710-0013 of 27 FCC ID : STESNCDMA24C 1. General Information 1.1 EUT Description Input: 110VAC(85 ~ 145VAC), Output: DC 7V Power Rating ͑͑ ESTECHCO.,LTD. http://www.estech.co.kr FCC ID STESNCDMA24C Modulation Type Product Name Model Name Wireless Repeater(CDMA) RSN-CDMA-24-C Channel Uplink :1851.25 ~ 1908.75MHz Uplink&Downlink(25/600/1175) CDMA Frequency Downlink :1931.25 ~ 1988.75MHz Report Number : ESTR0710-0014 of 27Report Number : ESTR0710-0014 of 27 FCC ID : STESNCDMA24C 2. Laboratory Information 3. Summary of Test Results Result 2.1 Laboratory Name 2.2 Location 2.3 Quality System Estech Co., Ltd. Rm. 1015, World Venture Center II, 426-5 Gasan-dong Geumcheon-gu, Seoul, 153-803. Korea. Test Item Accredited by KOLAS(ISO/IEC 17025) Head Office EMC Lab(Ichon) EMC Lab(Yanggi) Standard ͑͑ ESTECHCO.,LTD. http://www.estech.co.kr 58-1, Osan-Ri, GaNam-Myon, YeoJoo-Gun, KyungKi-Do, Korea 97-1, Hoiuk-Ri Majang-Myon, Icheon-city, KyungKi-Do, Korea 2.4 Major Accredited Mark PASS PASS PASS PASS Frequency stability Spurious and Harmonic Emission at Antenna Terminal PASS Part 24 Field Strength of Spurious Radiation RF Output Power Occupied Bandwidth Report Number : ESTR0710-0015 of 27 FCC ID : STESNCDMA24C 4. RF Output Power 4.1 Test Procedure 4.2 Test Equipments The following test equipments are used during tests ͑͑ ESTECHCO.,LTD. http://www.estech.co.kr Signal GeneratorE4432B Equipment Spectrum Analyzer Power output shall be measured at the RF outut terminals when the transmitter is adjusted in accordance with the tune-up procedure to give the values of current and voltage on circuit elements as specified. The electrical characteristics of the radio frequency load attached to the output terminals when this test is made shall be stated Model E4407B HP Manufacturer Agilent Report Number : ESTR0710-0016 of 27 4.3.1 Test Results (Uplink) Conducted power Low25 Mid.600 High1275 Ch No. 1880.00 1913.75 23.76 23.91 1851.2523.90 Freq (MHz)Power Output (dBm) Report Number : ESTR0710-0016 of 27 FCC ID : STESNCDMA24C 4.3.2 Test Results (Downlink) Low25 Mid600 High1275 24.07 1993.7523.86 ͑͑ ESTECHCO.,LTD. http://www.estech.co.kr Ch No.Freq (MHz)Power Output (dBm) 1931.2523.50 1960.00 Report Number : ESTR0710-0017 of 27Report Number : ESTR0710-0017 of 27 FCC ID : STESNCDMA24C 4.4 Test Plot Uplink RF Power Output (25) RF Power Output (600) ͑͑ESTECHCO.,LTD. http://www.estech.co.kr Report Number : ESTR0710-0018 of 27 RF Power Output (1275) Report Number : ESTR0710-0018 of 27 FCC ID : STESNCDMA24C Downlink RF Power Output (25) RF Power Output (600) ͑͑ESTECHCO.,LTD. http://www.estech.co.kr Report Number : ESTR0710-0019 of 27 RF Power Output (1275) Report Number : ESTR0710-0019 of 27 FCC ID : STESNCDMA24C Input Signal Output Power Uplink (600) ͑͑ESTECHCO.,LTD. http://www.estech.co.kr Report Number : ESTR0710-00110 of 27 Downlink (600) Report Number : ESTR0710-00110 of 27 FCC ID : STESNCDMA24C 5. Occupied Bandwidth 5.1 Test Procedure 5.2 Test Equipments The following test equipments are used during tests 5.3 Test Results Spectrum AnalyzerAgilent HP ͑͑ ESTECHCO.,LTD. http://www.estech.co.kr Signal Generator EquipmentModel E4407B E4432B The transmitter output is connected to the spectrum analyzer. The RBW is set to 1% of the Emission bandwidth. The VBW is set to 3 times the RBW. The sweep time is coupled. Manufacturer Report Number : ESTR0710-00111 of 27 (Uplink) (Downlink) 6001960.001.25 12751993.751.27 ChannelFrequency(MHz)26dB Bandwidth(MHz) 251931.251.25 251851.251.25 26dB Bandwidth(MHz)ChannelFrequency(MHz) 12751913.751.25 6001880.001.26 Report Number : ESTR0710-00111 of 27 FCC ID : STESNCDMA24C 5.4 Test Plot Uplink 26dB Channel Bandwidith(25) 26dB Channel Bandwidith(600) ͑͑ESTECHCO.,LTD. http://www.estech.co.kr Report Number : ESTR0710-00112 of 27 26dB Channel Bandwidith(1275) Report Number : ESTR0710-00112 of 27 FCC ID : STESNCDMA24C Downlink 26dB Channel Bandwidith(25) 26dB Channel Bandwidith(600) ͑͑ESTECHCO.,LTD. http://www.estech.co.kr Report Number : ESTR0710-00113 of 27 26dB Channel Bandwidith(1275) Report Number : ESTR0710-00113 of 27 FCC ID : STESNCDMA24C 6. Spurious and Harmonic Emission at Antenna Terminal 6.1 Test Procedu…

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Product Name Model Name RSN-CDMA-24-C ͑͑ESTECH CO., LTD. http://www.estech.co.kr FCC TEST REPORT Wireless Repeater(CDMA) Report Number : ESTR0710-0011 of 27 Applicant FCC ID STESNCDMA24C ESTECH CO., LTD Rm. 1015 World Venture Center, 426-5 Gasan-dong, Geumcheon-gu, Seoul, 153-803, Korea. Tel:82-2-867-3201, Fax:82-2-867-3204 R-TRON, Inc. Report Number : ESTR0710-0011 of 27 FCC ID : STESNCDMA24C Company Name Address Product Name Model No.Manufacturer Serial No. Country of origin Issued DateTested Date ͑͑ESTECH CO., LTD. http://www.estech.co.kr FCC Test Report Applicant Product Report Number RSN-CDMA-24-C KOREA R-TRON, Inc. Test Result Pass 2007-10-01 2007-08-14 ~ 2007-10-01 Other ESTR0710-001 Jisan IT Venture Bldg., 2/3F, 1004-9/10, Doksan-Dong, Gumcheon- Gu, Seoul, Korea Wireless Repeater(CDMA) NONE R-TRON, Inc. Report Number : ESTR0710-0012 of 27 Rm. 1015 World Venture Center, 426-5 Gasan-dong, Geumcheon-gu, Seoul, 153-803, Korea. Tel:82-2-867-3201, Fax:82-2-867-3204 ESTECH CO., LTD o This is certified that the above mentioned products have been tested for the sample provided by client. o No part of this document may not be duplicated or reproduced by any means without the express written permission of Estech Co., Ltd. Standard FCC PART 24 Subpart E Tested by Approved by I.K. Hong/ Engineer (Signature) Jay Kim/ Engineering Manager (Signature) Report Number : ESTR0710-0012 of 27 FCC ID : STESNCDMA24C 1. General Information Page 4 2. Laboratory Information Page 5 3. Summary of Test Results Page 5 4. RF Output Power Page 6 5. Occupied Bandwidth Page 11 6. Spurious and Harmonic Emission at Antenna Terminal Page 14 7. Field Strength of Spurious Radiation Page 24 8. Frequency stability Page 27 Contents ͑͑ESTECH CO., LTD. http://www.estech.co.kr Report Number : ESTR0710-0013 of 27Report Number : ESTR0710-0013 of 27 FCC ID : STESNCDMA24C 1. General Information 1.1 EUT Description Channel Uplink :1851.25 ~ 1908.75MHz Uplink&Downlink(25/600/1175) CDMA Frequency Downlink :1931.25 ~ 1988.75MHz Input: 110VAC(85 ~ 145VAC), Output: DC 7V Power Rating ͑͑ ESTECH CO., LTD. http://www.estech.co.kr FCC ID STESNCDMA24C Modulation Type Product Name Model Name Wireless Repeater(CDMA) RSN-CDMA-24-C Report Number : ESTR0710-0014 of 27Report Number : ESTR0710-0014 of 27 FCC ID : STESNCDMA24C 2. Laboratory Information 3. Summary of Test Results Result ͑͑ ESTECH CO., LTD. http://www.estech.co.kr 58-1, Osan-Ri, GaNam-Myon, YeoJoo-Gun, KyungKi-Do, Korea 97-1, Hoiuk-Ri Majang-Myon, Icheon-city, KyungKi-Do, Korea 2.4 Major Accredited Mark Test Item Accredited by KOLAS(ISO/IEC 17025) Head Office EMC Lab(Ichon) EMC Lab(Yanggi) Standard 2.1 Laboratory Name 2.2 Location 2.3 Quality System Estech Co., Ltd. Rm. 1015, World Venture Center II, 426-5 Gasan-dong Geumcheon-gu, Seoul, 153-803. Korea. PASS PASS PASS PASS RF Output Power Occupied Bandwidth PASS Part 24 Field Strength of Spurious Radiation Frequency stability Spurious and Harmonic Emission at Antenna Terminal Report Number : ESTR0710-0015 of 27 FCC ID : STESNCDMA24C 4. RF Output Power 4.1 Test Procedure 4.2 Test Equipments The following test equipments are used during tests Manufacturer Agilent ͑͑ ESTECH CO., LTD. http://www.estech.co.kr Signal GeneratorE4432B Equipment Spectrum Analyzer Power output shall be measured at the RF outut terminals when the transmitter is adjusted in accordance with the tune-up procedure to give the values of current and voltage on circuit elements as specified. The electrical characteristics of the radio frequency load attached to the output terminals when this test is made shall be stated Model E4407B HP Report Number : ESTR0710-0016 of 27 4.3.1 Test Results (Uplink) Conducted power Low25 Mid.600 High1175 23.76 24.10 1851.2523.90 Freq (MHz)Power Output (dBm)Ch No. 1880.00 1908.75 Report Number : ESTR0710-0016 of 27 FCC ID : STESNCDMA24C 4.3.2 Test Results (Downlink) Low25 Mid600 High1175 ͑͑ ESTECH CO., LTD. http://www.estech.co.kr Ch No.Freq (MHz)Power Output (dBm) 1931.2523.50 1960.0024.07 1988.7523.88 Report Number : ESTR0710-0017 of 27Report Number : ESTR0710-0017 of 27 FCC ID : STESNCDMA24C 4.4 Test Plot Uplink RF Power Output (25) RF Power Output (600) ͑͑ESTECH CO., LTD. http://www.estech.co.kr Report Number : ESTR0710-0018 of 27 RF Power Output (1175) Report Number : ESTR0710-0018 of 27 FCC ID : STESNCDMA24C Downlink RF Power Output (25) RF Power Output (600) ͑͑ESTECH CO., LTD. http://www.estech.co.kr Report Number : ESTR0710-0019 of 27 RF Power Output (1175) Report Number : ESTR0710-0019 of 27 FCC ID : STESNCDMA24C Input Signal Output Power Uplink (600) ͑͑ESTECH CO., LTD. http://www.estech.co.kr Report Number : ESTR0710-00110 of 27 Downlink (600) Report Number : ESTR0710-00110 of 27 FCC ID : STESNCDMA24C 5. Occupied Bandwidth 5.1 Test Procedure 5.2 Test Equipments The following test equipments are used during tests 5.3 Test Results ͑͑ ESTECH CO., LTD. http://www.estech.co.kr Signal Generator EquipmentModel E4407B E4432B The transmitter output is connected to the spectrum analyzer. The RBW is set to 1% of the Emission bandwidth. The VBW is set to 3 times the RBW. The sweep time is coupled. Manufacturer Spectrum AnalyzerAgilent HP Report Number : ESTR0710-00111 of 27 (Uplink) (Downlink) 11751908.751.26 6001880.001.26 251851.251.25 26dB Bandwidth(MHz)ChannelFrequency(MHz) ChannelFrequency(MHz)26dB Bandwidth(MHz) 251931.251.25 6001960.001.25 11751988.751.26 Report Number : ESTR0710-00111 of 27 FCC ID : STESNCDMA24C 5.4 Test Plot Uplink 26dB Channel Bandwidith(25) 26dB Channel Bandwidith(600) ͑͑ESTECH CO., LTD. http://www.estech.co.kr Report Number : ESTR0710-00112 of 27 26dB Channel Bandwidith(1175) Report Number : ESTR0710-00112 of 27 FCC ID : STESNCDMA24C Downlink 26dB Channel Bandwidith(25) 26dB Channel Bandwidith(600) ͑͑ESTECH CO., LTD. http://www.estech.co.kr Report Number : ESTR0710-00113 of 27 26dB Channel Bandwidith(1175) Report Number : ESTR0710-00113 of 27 FCC ID : STESNCDMA24C 6. Spurious and Harmonic Emission at Antenna T…

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