PERWT020Headset Walkie Talkie

1 2 34 ABCD 4 3 2 1 D CBA 1 TSUEN SHING ELECTRONICS LTD 1 SCH-WT020-01A A Title Size: Model No.: Rev.: Sheet of A4 方框图 DWG.: Drawing No.: CHK.:APP.: WT-020 ENG-015-B NOTE: REV:NAME:DATE:NAME:DATE:REV:REV:NAME:NAME:DATE:DATE:REV:REV:NAME:NAME:DATE:DATE:REV:REV:NAME:DATE: ANT L1 DUP AF AMP IF AMP SP IC TDA1083 LOCAL MIX Q5 OSCILATOR DET Q4 MODULATOR AF AMPLIFIER Q2 A机:27.260MHZ Q1,3 POWER 9V B机:26.980MHZ RX + MIC SW1 RX TX TX X1 100 OHM A 胡泽南 2003/07/09 最新发行

Operation Description This is a transceiver for Headset Walkie Talkie operation at 26.980 (B unit) and 27.260 (A unit) MHz which is controlled by a crystal. The Headset Walkie Talkie is powered by 9V battery. When the Headset Walkie Talkie (A unit) is power on, it can transmit a voice signal to another Headset Walkie Talkie. When it received a voice signal from another Headset Walkie Talkie, it will amplify the voice to speaker. It is the same function when operating in B unit. The brief circuit description is listed as follows: -Q4, x1 and associated circuit act as local oscillator -Q1, Q3 and associated circuit act as modulator -Q2 and associated circuit act as AF amplify -L1 and associated circuit act as separation of transmitting and receiving signal -Q5 and associated circuit act as mixer -IC TDA1083 and associated circuit act as AMP, DET and AF AMP

1 2 34 ABCD 4 3 2 1 D CBA 1 TSUEN SHING ELECTRONICS LTD 1 SCH-WT020-01@D @D Title Size: Model No.: Rev.: Sheet of A4 耳筒对讲机 DWG.: Drawing No.: CHK.:APP.: WT-020 ENG-015-B NOTE: REV:NAME:DATE:NAME:DATE:REV:REV:NAME:NAME:DATE:DATE:REV:REV:NAME:NAME:DATE:DATE:REV:REV:NAME:DATE: R122K C1100N BAT19.0V C3100UF C710N R4 330K VDD T1 4847005 T2 28129502 T3 2812952 T4A-5A01Q1 9014C Q3 9013G/H L1 4T SP1 32OHM X1 A:27.260MHZ C8 47n C91n R62.2k R71M C1210n C1620P C17 12p Q4 C1815 R82K R222kR910k C1912PF R11220 ANT1 C1830P C20470 C1310N R13390K Q5 9018F/G/H T5 89802 R121K 515161412610 981247 13 3 11 IC1 TDA1083 C2210N C101N C23 47N R143.3K C2510N C4100uF C547uF C24 22n C6100uF C1410n C27220u 123 123 4 123 46 1 34 6 R1010K VDD B:26.980MHZ + MIC1 C111n R166.8k C2847u R173.3k C2947N R195.1K Q29014C C30 560P R5470K R183.3K R201k C1510N SW1B LED1 * R242.2K C3310N P5 P4 P10P10P10 P9 01@A 03/01/17 胡泽南 首次电路 SW1A R156.8K R213.3K HiLoOFF 01B ZNHU 2003/0702 更改T5中周名 01c ZNHU 2003/7/13 为符合FCC要求:增加L2.L3.L4.L5 01D ZNHU 2003/722 更改美国版频率 C21 220P R3 39K

TEST REPORT This document shall not be reproduced either in full or in part except with written approval by the Authorized Representative of CMA Testing. Room 1401-3, Yan Hing Centre, 9-13 Wong Chuk Yeung St.., Fo Tan, Shatin, Hong Kong. Tel: (852) 2698 8198 Fax: (852) 2695 4177 E-mail: [email protected] Web Site: http://www.cmatcl.com Report No. : AD014307-1 Date : 2003 August 14 Applicant : Tsuen Shing Enterprises Limited 19/F., Billion Plaza, No. 8 Cheung Yue Street, Cheung Sha Wan, Kowloon, Hong Kong. Sample Description : One(1) submitted sample stated to be Headset Walkie Talkie of Model No. WT-020 . Rating : 9 V size battery No. of submitted sample : Three (3) sets *** Date Received : 2003 July 30. Test Period : 2003 July 30 – 2003 August 12. Test Requested : FCC Part 15 Certification Test Method : FCC Rules and Regulations Part 15 – May 2002 ANSI C63.4 – 1992 Test Result : See attached sheet(s) from page 2 to 12. Conclusion : The submitted sample was found to comply with requirement of FCC Part 15 Subpart C. For and on behalf of CMA Testing and Certification Laboratories Authorized Signature : Page 1 of 12 Danny Chui EMC Engineer - EL. Division FCC ID : PERWT020 TEST REPORT This document shall not be reproduced either in full or in part except with written approval by the Authorized Representative of CMA Testing. Room 1401-3, Yan Hing Centre, 9-13 Wong Chuk Yeung St.., Fo Tan, Shatin, Hong Kong. Tel: (852) 2698 8198 Fax: (852) 2695 4177 E-mail: [email protected] Web Site: http://www.cmatcl.com Report No. : AD014307-1 Date : 2003 August 14 Table of Contents 1 General Information........................................................................................................................ 3 1.1 General Description.................................................................................................................. 3 1.2 Related Submittal Grants.......................................................................................................... 3 1.3 Location of the test site............................................................................................................. 4 1.4 List of measuring equipment..................................................................................................... 5 2 Description of the radiated emission test.......................................................................................... 6 2.1 Test Procedure......................................................................................................................... 6 2.2 Test Result............................................................................................................................... 6 2.3 Radiated Emission Measurement Data....................................................................................... 7 2.3 Radiated Emission Measurement Data....................................................................................... 8 3 Description of the Line-conducted Test............................................................................................ 9 3.1 Test Procedure......................................................................................................................... 9 3.2 Test Result............................................................................................................................... 9 3.3 Graph and Table of Conducted Emission Measurement Data...................................................... 9 4 Photograph................................................................................................................................... 10 4.1 Photographs of the Test Setup for Radiated Emission and Conduction Emission........................ 10 4.2 Photographs of the External and Internal Configurations of the EUT......................................... 10 5 Supplementary document............................................................................................................... 11 5.1 Bandwidth............................................................................................................................. 11 6 Appendices............................................................................................................................... 12 Page 2 of 12 FCC ID : PERWT020 TEST REPORT This document shall not be reproduced either in full or in part except with written approval by the Authorized Representative of CMA Testing. Room 1401-3, Yan Hing Centre, 9-13 Wong Chuk Yeung St.., Fo Tan, Shatin, Hong Kong. Tel: (852) 2698 8198 Fax: (852) 2695 4177 E-mail: [email protected] Web Site: http://www.cmatcl.com Report No. : AD014307-1 Date : 2003 August 14 1 General Information 1.1 General Description The equipment under test (EUT) is transceiver for Headset Walkie Talkie operating at 26.980 (B unit) and 27.260 (A unit) MHz which is controlled by a crystal. The EUT is powered by 9V battery. When the Headset Walkie Talkie (A unit) is power on, it can transmit a voice signal to another Headset Walkie Talkie. When it received a voice signal from another Headset Walkie Talkie, it will amplify the voice to speaker. It is the same function when operating in B unit. The brief circuit description is listed as follows : - Q4, x1 and associated circuit act as local oscillator - Q1, Q3 and associated circuit act as modulator - Q2 and associated circuit act as AF amplifier - L1 and associated circuit act as separation of transmitting and receiving signals - Q5 and associated circuit act as mixer - IC TDA1083 and associated circuit act as IF AMP, DET and AF AMP. 1.2 Related Submittal Grants This is a single application for certification of a transceiver. Page 3 of 12 FCC ID : PERWT020 TEST REPORT This document shall not be reproduced either in full or in part except with written approval by the Authorized Representative of CMA Testing. Room 1401-3, Yan Hing Centre, 9-13 Wong Chuk Yeung St.., Fo Tan, Shatin, Hong Kong. Tel: (852) 2698 8198 …

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CMA Testing and Certification Laboratories P. of Report No.: AD014307-1 Bandwidth Plot Bandwidth 1 Bandwidth 2