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FCC ID: AAO4303526 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 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: Block Diagram and Schematics.

ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 1. Front View of Handset 2. Rear View of Handset ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 3. Bottom View of Handset 4. Front View of Base Unit ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 5. Bottom View of Base Unit 6. Side View of Base Unit ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 7. Front View of Charger 8. Rear View of Charger ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 9. Bottom View of Charger 10. Front View of Adatpor ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 11. Rear View of Adatpor

FCC ID Label FCC ID Label （ 27.5±0.5mm ） This statement will be printed in User’s Manual: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device nay not cause harmful interference and (2) This device must accept any interference received, including interference that may cause undesired operation. FCC ID.: AAO4303526 ︵ 3 ±0.5mm ︶

ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 1. Internal View of Handset 2. Component View of Main PCB (Handset) ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 3. Solder View of Main PCB (Handset) 4. Component View of RF PCB (Handset) ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 5. Solder View of RF PCB (Handset) 6. Internal View of Base Unit ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 7. Component View of Main PCB (Base Unit) 8. Solder View of Main PCB (Base Unit) ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 9. Internal View of RF PCB (Base Unit) 10. Component View of RF PCB (Base Unit) ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 11. Solder View of RF PCB (Base Unit) 12. Internal View of Charger ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 13. Component View of Main PCB (Charger) 14. Solder View of Main PCB (Charger) ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 CONSTRUCTED PHOTOS of EUT 17. Component View of Adatpor’s PCB 18. Solder View of Adatpor’s PCB

Ver. 1.1 Model: DCT4960 Cordless Phone Technical Specification Specifications Circuit Diagrams Technical Description PROPRIETARY INFORMATION NO DISSEMINATION OR USE ALLOWED WITHOUT PRIOR WRITTEN PERMISSION TABLE OF CONTENTS I. INTRODUCTION..................................................................................................... 1 II. SPECIFICATIONS .................................................................................................. 2 III. TECHNICAL DESCRIPTION .............................................................................. 3 1. G ENERAL.............................................................................................................. 3 2. B LOCK DIAGRAM OF RF MODULE.......................................................................... 4 3. F UNCTIONAL DESCRIPTION..................................................................................... 6 3.1. Radio Section ............................................................................................... 6 3.1.1. Antenna ..........................................................................................................6 3.1.1.1. 10.368 MHz Crystal circuit.....................................................................................6 3.1.1.2. Voltage Controlled Oscillator..................................................................................6 3.1.1.3. Phase Lock Loop.....................................................................................................6 3.1.2. Receiver .........................................................................................................7 3.1.2.1. 2400-2450 MHz Ceramic Band-pass Filter ............................................................7 3.1.2.2. Transmit/Receive Switch ........................................................................................7 3.1.2.3. SAW Band-pass Filter .............................................................................................7 3.1.3. Transmitter .....................................................................................................7 3.1.3.1. 2400-2500 MHz Ceramic Band-pass Filter ............................................................8 3.1.3.2. PA Driver................................................................................................................8 3.1.3.3. Power Amplifier ......................................................................................................8 3.1.3.4. 2400-2500 MHz Ceramic Band-pass Filter ............................................................8 3.2. Digital Section .............................................................................................. 8 3.3. Frequency Plan ............................................................................................ 8 4. P RECAUTIONS T AKEN TO A VOID I NTERFERENCE .................................................... 10 4.1. RF Filtering................................................................................................. 10 4.2. Shielding..................................................................................................... 10 Tech Description 1 November 3, 2001 I. Introduction The DCT4960 Cordless Telephone is a frequency hopped spread spectrum transmitter to be compliance with US (FCC Part 15.247) and Canadian (RSS-210) regulations for license free use in the 2400-2483.5MHz ISM band. The DCT4960 Cordless Telephone operates in the ISM (Industrial Scientific and Medical) band (2400 ~ 2483.5 MHz). The 20dB bandwidth of the hopping channels used in DCT4960 is less than 1MHz. And the number of hopping channels used in DCT4960 is 75. It complies with FCC part 15.247(a)(1)(ii). The DCT4960 is a frequency hopper, it uses the full available frequencies in the ISM band for operation and can make it difficult for other 2400MHz devices to operate correctly. The 20dB bandwidth of the hopping channels is about 670 KHz and any two consecutive channels are separated by a bandwidth greater than 670 KHz. It complies with FCC part 15.247(a)(1). The maximum power used in DCT4960 base station and handset are 11.0 mW and 7.08 mW respectively. It complies with FCC part 15.247(b)(2). Each DCT4960 base station supports up to four handsets and uses Time Division Duplex to distinguish the four handsets. Tech Description 2 November 3, 2001 II. Specifications Operating Frequency Range: 2400 ~ 2483.5 MHz Number of Used Channels: 75 RF Output Power: 7.08mW (Handset) / 11.0mW (Base) Range: 90m/600m (In Door/Out Door) Type of Spread Spectrum: Frequency Hopped Spread Spectrum Bandwidth of Channel: ≤ 1MHz (It is 670 KHz.) Channel Separation: ≥ 670KHz (It is 863 KHz.) Duplexing: Time Division Duplex Power Supply: 3.6 VDC (Handset) / 120VAC Adapter (Base) Tech Description 3 November 3, 2001 III. Technical Description 1. General The DCT4960 Cordless Telephone is a frequency hopped spread spectrum transmitter to be compliance with US (FCC Part 15.247) and Canadian (RSS-210) regulations for license free use in the 2400-2483.5MHz ISM band. The DCT4960 is a multiple-handset, single-base cordless telephone system, which provides a full-integrated mobility solution for your business. The DCT4960 handset allows you to freely move around your working space while on a call, and still maintain access to all your telephone system features. The DCT4960 telephone uses advanced digital frequency hopping spread spectrum (FHSS) technology to provide a quality audio path over a 2400MHz radio link. Establishing a call over a radio link is comparable to a wire line communication. The frequency band is divided into 75 channels in DCT4960. And 75 channels are used for each DCT4960 base and handset. Each message from DCT4960 base to handset is four frames in length. That is the message from DCT4960 base to handset hops on four different channels. The DCT4960 handset receiver gets the message from four different hopping channels. The message from…

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Rev. No 1.0 FCC Part 15 EMI TEST REPORT of E.U.T. : Cordless Telephone MODEL : 43-3526 / 43-3527 (43-3526: 1Base +1Handset+1Charger; 43-3527: 1Handset +1 Chager) FCC ID. : AAO4303526 for APPLICANT : Radio Shack Corporation product Evaluation and Compliance ADDRESS : 100 THROCKMOTRON ST., STE. 1300, FORT WORTH TEXAS, U.S.A. Test Performed by ELECTRONICS TESTING CENTER, TAIWAN NO. 34, LIN 5, DING FU TSUN, LINKOU HSIANG, TAIPEI HSIEN, TAIWAN, R.O.C. Tel:(02)26023052, 26023054 Fax:(02)26010910 Report Number : ET91R-01-035 ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 TEST REPORT CERTIFICATION Applicant : Radio Shack Corporation product Evaluation and Compliance 100 THROCKMOTRON ST., STE. 1300, FORT WORTH TEXAS, U.S.A. Manufacturer : TECOM CO., LTD. No.23 R&D Road 2,Science-Based Industrial Park, Hsin-Chu Taiwan, R.O.C. Description of EUT : a) Type of EUT : Cordless Telephone b) Trade Name : Radio Shack c) Model No. : 43-3526 / 43-3527 (43-3526: 1Base +1Handset+1Charger; 43-3527: 1Handset +1 Chager) d) Power Supply : Adaptoer Model: U093030D I/P: 120VAC, 60Hz, 6W; O/P: 9VDC, 300mA Regulation Applied : FCC Rules and Regulations Part 15 Subpart B & C (1999) I HEREBY CERTIFY THAT: The data shown in this report were made in accordance with the procedures given in ANSI C63.4, and the energy emitted by the device was founded to be within the limits applicable. I assume full responsibility for accuracy and completeness of these data. Note: 1. The result of the testing report relates only to the item tested. 2. The testing report shall not be reproduced expect in full, without the written approval of ETC. Issued Date : Jan. 14, 2002 Test Engineer : ( Jeff Chuang ) Approve & Authorized Signer : Will Yauo, Manager EMC Dept. II of ELECTRONICS TESTING CENTER, TAIWAN ETC Report No. : ET91R-01-035 FCC ID. : AAO4303526 Rev. No 1.0 Table of Contents Page 1 GENERAL INFORMATION....................................................................................................... 1 1.1 Product Description...................................................................................................................... 1 1.2 Characteristics of Device ............................................................................................................. 1 1.3 Test Methodology......................................................................................................................... 1 1.4 Test Facility.................................................................................................................................. 1 1.5 Modist List.................................................................................................................................... 1 2 PROVISIONS APPLICABLE...................................................................................................... 2 2.1 Definition...................................................................................................................................... 2 2.2 Requirement for Compliance ....................................................................................................... 3 2.3 Restricted Bands of Operation ..................................................................................................... 5 2.4 Labeling Requirement .................................................................................................................. 5 2.5 User Information........................................................................................................................... 6 3. SYSTEM TEST CONFIGURATION........................................................................................... 7 3.1 Justification................................................................................................................................... 7 3.2 Devices for Tested System ........................................................................................................... 7 4 RADIATED EMISSION MEASUREMENT............................................................................... 8 4.1 Applicable Standard ..................................................................................................................... 8 4.2 Measurement Procedure............................................................................................................... 8 4.3 Measuring Instrument................................................................................................................. 10 4.4 Radiated Emission Data ............................................................................................................. 11 4.4.1 Handset...................................................................................................................................11 4.4.2 Base Unit ................................................................................................................................14 4.4.3 Other Emssion.........................................................................................................................17 4.5 Field Strength Calculation .......................................................................................................... 18 4.6 Photos of Radiation Measuring Setup ........................................................................................ 19 4.6.1 Handset...................................................................................................................................19 4.6.2 Base Unit ................................................................................................................................20 5 CONDUCTED EMISSION MEASUREMENT........................................................................ 21 5.1 Standard Applicable ................................................................................................................... 21 5.2 Measurement Procedure................................................…

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ETC Report No. : ET91R-01-035 Sheet 37 of 43 Sheets FCC ID. : AAO4303526 Rev. No 1.0 Appendix 1 : Plotted Data of Power Line Conducted Emissions ETC Report No. : ET91R-01-035 Sheet 38 of 43 Sheets FCC ID. : AAO4303526 Rev. No 1.0 Appendix 2 : Plotted Data for Separation of Adjacent Channel ETC Report No. : ET91R-01-035 Sheet 39 of 43 Sheets FCC ID. : AAO4303526 Rev. No 1.0 Appendix 3 : Plotted Data for Total Used Hopping Frequencies ETC Report No. : ET91R-01-035 Sheet 40 of 43 Sheets FCC ID. : AAO4303526 Rev. No 1.0 Appendix 4 : Plotted Data for Channel Bandwidth ETC Report No. : ET91R-01-035 Sheet 41 of 43 Sheets FCC ID. : AAO4303526 Rev. No 1.0 Appendix 5 : Plotted Data for Channel Dwell Time ETC Report No. : ET91R-01-035 Sheet 42 of 43 Sheets FCC ID. : AAO4303526 Rev. No 1.0 Appendix 6 : Plotted Data for Output Peak Power ETC Report No. : ET91R-01-035 Sheet 43 of 43 Sheets FCC ID. : AAO4303526 Rev. No 1.0 Appendix 7 : Plotted Data for 100 kHz Bandwidth from Band Edge

ETC Report No.: B0201143 FCC ID: AAO4303526 Rev. No. 1.0 13 Duty Cycle 13.1 Duty Cycle Base Unit: 1.000ms x 4 x 10 / 100 ms = 40% Handset Unit: 1.000ms x 1 x 10 /100 ms = 10% 13.2 Corrected Conducted Output Power Base Unit Channel Plan Conducted Output Power (dBm) Duty cycle Corrected Conducted Output Power (mW) Low Channel 14.50 40% 11.27 Middle Channel 14.33 40% 10.84 High Channel 13.33 40% 8.612 Handset Unit Low Channel 17.17 10% 5.212 Middle Channel 17.50 10% 5.623 High Channel 18.50 10% 7.079 13.3 Duty Cycle Plot Please see Appendix 6 and Appendix 8 for details. ETC Report No.: B0201143 FCC ID: AAO4303526 Rev. No. 1.0 Appendix 7: Plotted Data for Duty Cycle

in accordance with the requirements of FCC Report and Order: ET Docket 93-62, and OET Bulletin 65 Supplement C for 2450M FHSS WIRELESS TELEPHONE MODEL: DCT4960-2/DCX490 FCC ID: AMW4960 November 5, 2001 REPORT NO: 01U1046-1 Prepared for UNIDEN AMERICA CORPORATION 4700 AMON CARTER BOULEVARD FORT WORTH TEXAS 76155 U.S.A. Prepared by COMPLIANCE CERTIFICATION SERVICES 561F MONTEREY ROAD, MORGAN HILL, CA 95037, USA TEL: (408) 463-0885 REPORT NO: 01U1046-1 DATE: NOVEMBER 5,2001 FCC ID: AMW4960 EUT: 2450M FHSS WIRELESS TELEPHONE COMPLIANCE CERTIFICATION SERVICES 2 of 37 DOCUMENT NO: CCSUP4003C 561F MONTEREY ROAD, MORGAN HILL 95037 U.S.A. TEL:(408) 463-0885 FAX:(408) 463-0888 This report shall not be reproduced except in full, without the written approval of CCS. This document may be altered or revised by Compliance Certification Services personnel only, and shall be noted in the revision section of the document. CERTIFICATE OF COMPLIANCE (SAR EVALUATION) Dates of Tests: November 4, 2001 Report No: 01U1046-1 Test Sample is a: Pre-production Unit Tx Frequency: 2402.784 – 2479.680 MHz (FHSS) Max. RF Output Power: 19.08dBm (antenna port conducted). FCC Classification: Unlicensed Intentional Radiator RF Exposure environment: General Population/Uncontrolled Application Type: Certification FCC Rule Part(s): § 15.247 This wireless portable device has been shown to be capable of compliance for localized specific absorption rate (SAR) for uncontrolled environment/general population exposure limits specified in ANSI/IEEE Std. C95.1-1992 and had been tested in accordance with the measurement procedures specified in FCC OET 65 Supplement C (released on 6/29/2001 see Test Report). I attest to the accuracy of data. All measurements reported herein were performed by me or were made under my supervision and are correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the qualifications of all persons taking them. Steve Cheng EMC Engineering Manager NVLAP accreditation does not constitute any product endorsement by NVLAP or any agency of the United States Government. CCS certifies that no party to this application has been denied the FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). APPLICANT: UNIDEN AMERICA CORPORATION 4700 AMON CARTER BOULEVARD FORT WORTH TEXAS, 76155 U.S.A. TRADE NAME: UNIDEN MODEL: DCT4960-2/DCX490 SERIAL NUMBER: N/A (PRE-PRODUCTION) FCC ID: AMW4960 REPORT NO: 01U1046-1 DATE: NOVEMBER 5,2001 FCC ID: AMW4960 EUT: 2450M FHSS WIRELESS TELEPHONE COMPLIANCE CERTIFICATION SERVICES 3 of 37 DOCUMENT NO: CCSUP4003C 561F MONTEREY ROAD, MORGAN HILL 95037 U.S.A. TEL:(408) 463-0885 FAX:(408) 463-0888 This report shall not be reproduced except in full, without the written approval of CCS. This document may be altered or revised by Compliance Certification Services personnel only, and shall be noted in the revision section of the document. TABLE OF CONTENT 1. EUT DESCRIPTION.........................................................................................................4 2. REQUIREMENTS FOR COMPLIANCE TESTING DEFINED BY THE FCC..........5 3. DOSIMETRIC ASSESSMENT SETUP.........................................................................6 3.1. MEASUREMENT SYSTEM DIAGRAM....................................................................................................................7 3.2. SYSTEM COMPONENTS...........................................................................................................................................8 3.3. EUT ARRANGEMENT...............................................................................................................................................12 4. EUT TUNE-UP PROCEDURE......................................................................................18 5. EVALUATION PROCEDURE.......................................................................................19 5.1. SIMULATED TISSUE LIQUID PARAMETER CONFIRMATION........................................................................19 5.2. SYSTEM ACCURACY VERIFICATION..................................................................................................................19 5.3. SAR EVALUATION PROCEDURE.........................................................................................................................21 5.4. EXPOSURE LIMIT.....................................................................................................................................................22 6. RESULTS.........................................................................................................................23 7. REFERENCES................................................................................................................32 8. APPENDIX.......................................................................................................................33 8.1. EUT PHOTOS.............................................................................................................................................................33 8.2 EQUIPMENTS LIST & CALIBRATION INFO.........................................................................................................34 8.3 IEEE SCC-34/SC-2 P1528 RECOMMENDED TISSUE DIELECTRIC PARAMETERS.................................35 8.4 EQUIPMENTS CALIBRATION CERTIFICATE.....................................................................................................36 REPORT NO: 01U1046-1 DATE: NOVEMBER 5,2001 FCC ID: AMW4960 EUT: 2450M FHSS WIRELESS TELEPHONE COMPLIANCE CERTIFICATION SERVICES 4 of 37 DOCUMENT NO: CCSUP4003C 561F MONTEREY ROAD, MORGAN HILL 95037 U.S.A. TEL:(408) 463-0885 FAX:(408) 463-0888 This report shall not be reproduced except in full, without the written approval of CCS. This document may be altered or revised by Compliance Certification Services personnel only, and…

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Rev. No 1.0 RF Maximum Permissible Exposure Measurement Report of E.U.T. : Cordless Telephone FCC ID. : AAO4303526 MODEL : 43-3526 / 43-3527 (43-3526: 1Base +1Handset+1Charger; 43-3527: 1Handset +1 Chager) for APPLICANT : Radio Shack Corporation product Evaluation and Compliance ADDRESS : 100 THROCKMOTRON ST., STE. 1300, FORT WORTH TEXAS, U.S.A. Test Performed by ELECTRONICS TESTING CENTER, TAIWAN NO. 34, LIN 5, DING FU TSUN, LINKOU HSIANG, TAIPEI HSIE, TAIWAN, R.O.C. Tel:(02)26023052, 26023054 Fax:(02)26010910 Report Number : ET91R-01-035 ETC Report No. : ET91R-01-035 FCC ID.: AAO4303526 Rev. No 1.0 TEST REPORT CERTIFICATION Applicant : Radio Shack Corporation product Evaluation and Compliance 100 THROCKMOTRON ST., STE. 1300, FORT WORTH TEXAS, U.S.A. Manufacturer : TECOM CO., LTD. No.23 R&D Road 2,Science-Based Industrial Park, Hsin-Chu Taiwan, R.O.C. Description of EUT : a) Type of EUT : Cordless Telephone b) Trade Name : Radio Shack c) Model No. : 43-3526 / 43-3527 (43-3526: 1Base +1Handset+1Charger; 43-3527: 1Handset +1 Chager) d) Power Supply : Adaptoer Model: U093030D; I/P: 120VAC, 60Hz, 6W; O/P: 9VDC, 300mA Regulation Applied : IEEE C95.1-1991, FCC 47 CFR Part 1 and Part 2 I…

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