RDJ9307427MHz Radio Transmitter

A>BLOCK DIAGRAM B> IC BLOCK DIAGRAM TX2C TRANSMITTER IC CONTROL FRONT BACK LEFT RIGHT X1，Q1，Q2 OSCILL A TING & MIX AMP L3 TUNNING ANT TX DC 4.5V POWER SUPPLY TX2C

FCC ID Location FCC ID Label Sample FCC ID: RDJ93074 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.

CIRCUIT DESCRIPTION: In transmitter, press the Forward ,Backward, Left or Right, output IC1 pin 8 supply encoding signal. Q1 &X1 is a crystal oscillator of 49.860MHz frequency. Q2 is a modulator. Output of Q2 drivers the transformer L3. The antenna is coupled to the modulator by the transformer. ANTEENA AND GROUND CIRCUITRY This unit makes use of an external flexible 31centimeters long antenna. The antenna is inductively coupled. The unit relies on the ground tract of the printed circuit board. No external ground is provided .Energy is supplied a 4.5-volt batteries(including three 1.5v “AA” battery.)

SGS-CSTC Standards Technical Services Co., Ltd. Report No.: 03.12.2145EF Page: 1 of 10 FCC ID: RDJ93074 Authorized Signature: Kent Hsu Laboratory Manager SGS-CSTC Co.,Ltd. This report refers to the General Conditions for Inspection and Testing Services, printed overleaf This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product and does not permit the use of the SGS PRODUCT CERTIFICATION MARK.. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in this report. This report may only be reproduced and distributed in full. If the product in this report is used in any configuration other than that detailed in the report, the manufacturer must ensure the new system complies with all relevant standards. Any mention of SGS International Electrical Approvals or testing done by SGS International Electrical Approvals in connection with, distribution or use of the product described in this report must be approved by SGS International Electrical Approvals in writing. Member of the SGS Group (Société Générale de Surveillance) 1/F., Building No. 1 Building, Agriculture Machinery Materials Co. Wushan Road, Shipai, Tianhe District,Guangzhou, China Telephone: +86 (0) 20 3848 1001 Fax: +86 (0) 20 3848 1006 [email protected] FEDERAL COMMUNICATIONS COMMISSION Registration number: 282399 FCC TEST REPORT Application No. : 03.12.2145E Applicant : Serendipity (H.K.) Ltd FCC ID : RDJ93074 Fundamental Frequency : 27.145 MHz Equipment under Test (EUT): Name : OFF-ROAD TUMBLERS Model : 93074 Serial No. : Not Supplied by Applicant Standards : FCC PART 15, SUBPART C : 2002 Date of Receipt : 06 December 2003 Date of Test : 10 to 20 December 2003 Date of Issue : 02 January 04 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Report No.: 03.12.2195ER Page: 2 of 10 FCC ID No.: RDJ93074 2 Contents Page 1 COVER PAGE.........................................................................................................................................................1 2 CONTENTS .............................................................................................................................................................. 2 3 GENERAL INFORMATION.................................................................................................................................. 3 3.1 CLIENT INFORMATION....................................................................................................................................... 3 3.2 DETAILS OF E.U.T. ............................................................................................................................................ 3 3.3 DESCRIPTION OF SUPPORT UNITS....................................................................................................................... 3 3.4 TEST LOCATION................................................................................................................................................. 3 3.5 OTHER INFORMATION REQUESTED BY THE CUSTOMER...................................................................................... 3 3.6 TEST FACILITY................................................................................................................................................... 4 4 TEST RESULTS....................................................................................................................................................... 5 4.1 TEST INSTRUMENTS........................................................................................................................................... 5 4.2 E.U.T. OPERATION............................................................................................................................................ 5 4.3 TEST PROCEDURE & MEASUREMENT DATA....................................................................................................... 5 4.3.1 Radiated Emissions ...................................................................................................................................... 5 4.3.2 Occupied Bandwidth .................................................................................................................................... 7 4.3.3 Photographs - Radiated Emission Test Setup in Chamber ..........................................................................8 5 PHOTOGRAPHS - EUT CONSTRUCTIONAL DETAILS ...........................................................................9-10 SGS-CSTC Standards Technical Services Co., Ltd. Report No.: 03.12.2195ER Page: 3 of 10 FCC ID No.: RDJ93074 3 General Information 3.1 Client Information Applicant: Serendipity (H.K.) Ltd Address of Applicant: Room 1115, 11/F., Peninsula Center, 67 Mody Road T.S.T., East, Kowloon Hong Kong 3.2 Details of E.U.T. Product Name: OFF-ROAD TUMBLERS (Transmitter Part) Model: 93074 Power Supply: 4.5V DC (3 x ‘AA’ Size Batteries) Power Cord: N/A- 3.3 Description of Support Units The EUT was tested as an independent unit: a 27MHz radio transmitter. 3.4 Test Location All tests were performed at:- SGS-CSTC Standards Technical Services Ltd., Guangzhou Safety & EMC Laboratory, 1/F, Building No. 1, Agriculture Machinery Materials Company Warehouse Ltd., Wushan Road Shipai, Tianhe District, Guangzhou, China. P.C. 510630. Tel: +86 20 3848 1001 Fax: +86 20 3848 1006 3.5 Other Information Requested by the Customer None. SGS-CSTC Standards Technical Services Co., Ltd. Report No.: 03.12.2195ER Page: 4 of 10 FCC ID No.: RDJ93074 3.6 Test Facility The test facility is recognized, certified, or accredited by the following organizations: • NVLAP – Lab Code: 200611-0 SGS-CSTC Standards Technical Services Co., Ltd., Guangzhou EMC Laboratory is recognized under the National…

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