PERWT41822 channels FRS+GMRS

Test Setup FCC ID : PERWT418 External Photo -front External Photo - rear

Test Setup FCC ID : PERWT418 Internal Photo – 1 Internal Photo - 2 Test Setup FCC ID : PERWT418 Internal Photo – 3 Internal Photo – 4 Test Setup FCC ID : PERWT418 Internal Photo – 5 Internal Photo – 6 Test Setup FCC ID : PERWT418 Internal Photo – 7 Internal Photo – 8 Test Setup FCC ID : PERWT418 Internal Photo – 9 Internal Photo – 10 Test Setup FCC ID : PERWT418 Internal Photo – 11 Internal Photo – 12

Modulation Frequency Response 0.000.501.001.502.002.50 200 700 1200 1700 2200 2700 3200 3700 4200 4700 Modulation Frequency (Hz) Frequency Deviation (kHz) Modulation Frequency Response 0.000.501.001.502.002.503.00 200 700 1200 1700 2200 2700 3200 3700 4200 4700 Modulation Frequency (Hz) Modulation Index (%)

Modulation Limiting Characteristic 0.000.501.001.502.002.50 47 57 67 77 87 97 107 117 127 137 Modulation Input (dBSPL) Frequency Deviation (kHz) 500Hz1000Hz2500Hz3125Hz

E • The test results reported in this report shall refer only to the sample actually tested and shall not refer or be deemed a refer to bulk from which such a sample may be said to have been obtained. • This report shall not be reproduced except in full without prior authorization from Intertek Testing Services Hong Kong Limited • For Terms And Conditions of the services, it can be provided upon request. • The evaluation data of the report will be kept for 3 years from the date of issuance. Intertek Testing Services Hong Kong Ltd. 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Tel: (852) 2173 8888 Fax: (852) 2371 0521 Website: www.hk.intertek-etlsemko.com Tsuen Shing Enterprises Ltd. Application For Certification (FCC ID: PERWT418) April 29, 2004 0401987(S1) TL/ Ann Choy April 29, 2004 INTERTEK TESTING SERVICES FCC ID: PERWT418 i SUMMARY OF CONTENTS LIST OF EXHIBITS EXHIBIT 1: General Description EXHIBIT 2: System Test Configuration EXHIBIT 3: RF Power Output EXHIBIT 4: Modulation Characteristics EXHIBIT 5: Occupied Bandwidth EXHIBIT 6: Spurious Emission EXHIBIT 7: Frequency Stability EXHIBIT 8: Technical Specifications EXHIBIT 9: Product Labelling EXHIBIT 10: Photographs EXHIBIT 11: Instruction Manual EXHIBIT 12: Tune Up Procedure EXHIBIT 13: Part List EXHIBIT 14: Input Current EXHIBIT 15: RF Exposure Info INTERTEK TESTING SERVICES FCC ID: PERWT418 ii MEASUREMENT/TECHNICAL REPORT Application : Tsuen Shing Enterprises Limited Trade Name/Model No : WT 418 Date : April 29, 2004 This report concerns (check one:)Original Grant X Class II Change Equipment Type: Family Radio Service + General Mobile Radio Service, FRS + GMRS Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? Yes No X If yes, defer until: date Company Name agrees to notify the Commission by: date of the intended date of announcement of the product so that the grant can be issued on that date. Report prepared by: Tommy Leung Intertek Testing Services 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Phone: 852-2173-8538 Fax: 852-2741-1693 INTERTEK TESTING SERVICES FCC ID: PERWT418 iii Table of Contents 1.0 General Description.............................................................................................2 1.1 Product Description.........................................................................................2 1.2 Related Submittal(s) Grants...........................................................................3 1.3 Test Methodology...........................................................................................3 1.4 Test Facility....................................................................................................3 2.0 System Test Configuration .................................................................................5 2.1 Justification.....................................................................................................5 2.2 EUT Exercising Software................................................................................6 2.3 Special Accessories.......................................................................................6 2.4 Measurement Uncertainty..............................................................................6 2.5 Equipment Modification..................................................................................6 3.0 RF Output Power (Section 95.639(d)) .................................................................8 4.0 Modulation Characteristics (Section 95.637(a))...............................................12 4.1 Modulation Frequiency Response.................................................................13 4.2 Modulation Limiting Characteristic.................................................................15 4.3 Audio Low Pass Filter Response..................................................................17 5.0 Occupied Bandwidth (Section 95.633(c)) ........................................................19 6.0 Spurious Emission (Section 95.635(b)) ............................................................21 6.1 Field Strength of Spurious Radiation..............................................................22 7.0 Frequency Stability (Section 95.627)................................................................28 7.1 Frequency Tolerance....................................................................................29 7.2 Temperature Extreme Condition....................................................................31 7.3 Voltage Extreme Condition............................................................................34 8.0 Technical Specifications...................................................................................37 9.0 Product Labelling..............................................................................................41 10.0 Equipment Photographs.................................................................................44 11.0 Instruction Manual ..........................................................................................46 12.0 Tune Up Procedure.........................................................................................48 13.0 Part List............................................................................................................50 14.0 Input Current ...................................................................................................52 15.0 RF Exposure Info.............................................................................................54 INTERTEK TESTING SERVICES FCC ID: PERWT418 iv List of attached file Exhibit type File Description Filename Operation Description Technical Description descri.pdf Test Report Bandwidth Plot bw.pdf Test Report Modulation Frequency Response mfr.pdf Test Report Modulation Limit Characteristic mlc.pdf Test Report Spurious Emission spurious.pdf Block Diagram Block Diagram block.pdf Schematics Circuit Diagram circuit.pdf ID Label/Loca…

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Audio Low Pass Filter Response -60.0-50.0-40.0-30.0-20.0-10.0 0.0 10.0 1 10 100 Frequency (kHz) dB relative to 1 kHz LPF ResponseTIA/EIA-603

Test Setup FCC ID : PERWT418 Radiated -front Radiated - rear