S4ZINTERPHONEWalkie Talkie

antenna selecting frequency high-frequency audio enlarged audio amplify speaker loop circuit enlarged calling switch audio enlarged audio amplify hight frequency selecting frequency antenna enlarged loop circuit calling switch Block diagram

PHOTOGRAPH OF THE PRODUCT FRONT VIEW OF THE PRODUCT REAR VIEW OF THE PRODUCT

FCC ID: S4ZINTERPHONE MADE IN CHINA This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

PHOTOGRAPH OF THE PRODUCT INNER CIRCUIT TOP VIEW INNER CIRCUIT BOTTOM VIEW

FCC ID: S4ZINTERPHONE Circuit Description The 49.86MHz crystal oscillator drives the base of Q1 the final/buffer amplifier. The modulation provided by Speaker. The output of Q1 has the matching network consisting of L1 and C0 that limit the harmonic content and effect the proper coupling of the antenna to the output stage. Antenna, Ground and Power Source The antenna consists of a 6cm long telescoping chrome over brass tubing. There is no external ground connection. The ground is only that of the printed circuit board. Electric current is supplied by a 9 Volt (“6F22” size battery x 1) primary battery

香 港 標 準 及 檢 定 中 心 Hong Kong Standards and Testing Centre Date : 2005-03-16 TEST REPORT Page 1 of 17 No. : HM153191 This report shall not be reproduced unless with prior written approval from the Hong Kong Standards and Testing Centre. 香港新界大埔工業村大宏街10號 10 Dai Wang Street, Taipo Industrial Estate, N.T., Hong Kong Tel: (852) 2666 1888 Fax: (852) 2664 4353 Homepage: www.hkstc.org E-mail: [email protected] For full text of “Conditions of Issuance of Test Report”, please refer to overleaf or refer to the website of STC: www.hkstc.org (the section “Application and Quotation”). Applicant: SHANTOU CHENGHAI DISTRICT XIEHE PLASTIC HARDWARE FACTORY & CO., LTD. NO.4 DONGGANG ROAD, CHENGHAI , SHANTOU CITY,GUANGDONG PROVINCE, CHINA Description of Samples: Model name: 49MHz INTERPHONE Model no.: 9985 Brand name: N/A FCC ID: S4ZINTERPHONE Date Samples Received: 2004-12-31 Date Tested: 2005-02-02 Investigation Requested: FCC Part 15 Subpart C Conclusions: The submitted product COMPLIED with the requirements of Federal Communications Commission [FCC] Rules and Regulations Part 15. The tests were performed in accordance with the standards described above and on Section 2.2 in this Test Report. Remarks: For additional models details, see page 5. K C Lee, EMC for Chief Executive 香 港 標 準 及 檢 定 中 心 Hong Kong Standards and Testing Centre Date : 2005-03-16 TEST REPORT Page 2 of 17 No. : HM153191 香港新界大埔工業村大宏街10號 10 Dai Wang Street, Taipo Industrial Estate, N.T., Hong Kong Tel: (852) 2666 1888 Fax: (852) 2664 4353 Homepage: www.hkstc.org E-mail: [email protected] For full text of “Conditions of Issuance of Test Report”, please refer to overleaf or refer to the website of STC: www.hkstc.org (the section “Application and Quotation”). CONTENT: Cover Page 1 of 17 Content Page 2-3 of 17 1.0 General Details 1.1 Test Laboratory Page 4 of 17 1.2 Applicant Details Page 4 of 17 Applicant HKSTC Code Number for Applicant Manufacturer 1.3 Equipment Under Test [EUT] Page 5 of 17 Description of EUT operation 1.4 Date of Order Page 5 of 17 1.5 Submitted Samples Page 5 of 17 1.6 Test Duration Page 5 of 17 1.7 Country of Origin Page 5 of 17 1.8 Additional Information of EUT Page 6 of 17 2.0 Technical Details 2.1 Investigations Requested Page 7 of 17 2.2 Test Standards and Results Summary Page 7 of 17 3.0 Test Results 3.1 Emission Page 8-12 of 17 3.2 Bandwidth Measurement Page 13-14 of 17 香 港 標 準 及 檢 定 中 心 Hong Kong Standards and Testing Centre Date : 2005-03-16 TEST REPORT Page 3 of 17 No. : HM153191 香港新界大埔工業村大宏街10號 10 Dai Wang Street, Taipo Industrial Estate, N.T., Hong Kong Tel: (852) 2666 1888 Fax: (852) 2664 4353 Homepage: www.hkstc.org E-mail: [email protected] For full text of “Conditions of Issuance of Test Report”, please refer to overleaf or refer to the website of STC: www.hkstc.org (the section “Application and Quotation”). Appendix A List of Measurement Equipment Page 15 of 17 Appendix B Photographs Page 16-17 of 17 香 港 標 準 及 檢 定 中 心 Hong Kong Standards and Testing Centre Date : 2005-03-16 TEST REPORT Page 4 of 17 No. : HM153191 香港新界大埔工業村大宏街10號 10 Dai Wang Street, Taipo Industrial Estate, N.T., Hong Kong Tel: (852) 2666 1888 Fax: (852) 2664 4353 Homepage: www.hkstc.org E-mail: [email protected] For full text of “Conditions of Issuance of Test Report”, please refer to overleaf or refer to the website of STC: www.hkstc.org (the section “Application and Quotation”). 1.0 General Details 1.1 Test Laboratory The Hong Kong Standards and Testing Centre Ltd. EMC Laboratory 10 Dai Wang Street, Taipo Industrial Estate New Territories, Hong Kong Telephone: 852 2666 1888 Fax: 852 2664 4353 1.2 Applicant Details Applicant SHANTOU CHENGHAI DISTRICT XIEHE PLASTIC HARDWARE FACTORY & CO., LTD. NO.4 DONGGANG ROAD, CHENGHAI , SHANTOU CITY,GUANGDONG PROVINCE, CHINA HKSTC Code Number for Applicant STS002 Manufacturer SHANTOU CHENGHAI DISTRICT XIEHE PLASTIC HARDWARE FACTORY & CO., LTD. NO.4 DONGGANG ROAD, CHENGHAI , SHANTOU CITY,GUANGDONG PROVINCE, CHINA 香 港 標 準 及 檢 定 中 心 Hong Kong Standards and Testing Centre Date : 2005-03-16 TEST REPORT Page 5 of 17 No. : HM153191 香港新界大埔工業村大宏街10號 10 Dai Wang Street, Taipo Industrial Estate, N.T., Hong Kong Tel: (852) 2666 1888 Fax: (852) 2664 4353 Homepage: www.hkstc.org E-mail: [email protected] For full text of “Conditions of Issuance of Test Report”, please refer to overleaf or refer to the website of STC: www.hkstc.org (the section “Application and Quotation”). 1.3 Equipment Under Test [EUT] Description of Sample Model Name: 49MHz INTERPHONE Manufacturer: SHANTOU CHENGHAI DISTRICT XIEHE PLASTIC HARDWARE FACTORY & CO., LTD. Brand Name: N/A Model Number: 9985 Additional Model Number: 9987, 9987A, 9989, 9989A, 2001, 2001A Input Voltage: 9Vd.c (“6F22” size battery x 1) 1.3.1 Description of EUT Operation The Equipment Under Test (EUT) is a SHANTOU CHENGHAI DISTRICT XIEHE PLASTIC HARDWARE FACTORY & CO., LTD., 49MHz INTERPHONE. The transmitter is a 6 button transmitter. The EUT continues to transmit while button is being pressed. It is voice transmission, modulation by microphone, and type is amplitude modulation. 1.4 Date of Order 2004-12-31 1.5 Submitted Sample(s): 6 Samples per model 1.6 Test Duration 2005-02-02 1.7 Country of Origin China 香 港 標 準 及 檢 定 中 心 Hong Kong Standards and Testing Centre Date : 2005-03-16 TEST REPORT Page 6 of 17 No. : HM153191 香港新界大埔工業村大宏街10號 10 Dai Wang Street, Taipo Industrial Estate, N.T., Hong Kong Tel: (852) 2666 1888 Fax: (852) 2664 4353 Homepage: www.hkstc.org E-mail: [email protected] For full text of “Conditions of Issuance of Test Report”, please refer to overleaf or refer to the website of STC: www.hkstc.org (the section “Application and Quotation”). 1.8 Additional Information of EUT Submitted Not Available User Manual Part List Circuit Diagram Printed Circuit Board [PCB] Layout Block diagram FCC ID Label 香 港 標 準 及 檢 定 中 心 Hong Kong Standards and Testing Centre Date : 2005-03-16 TEST REPORT Page 7 of 17 No. : HM153191 香港新界大埔工業村大宏街10號 10 Dai Wang Street, Taipo Industrial Estate, N.T.,…

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TEST SET UP PHOTOGRAPH OF THE PRODUCT MEASUREMENT OF RADIATED EMISSION TEST SET UP