O44J1WAMLEDANTCar Alarm Receiver

O44J1WAMLEDANT Block Diagram RX : B1~B4 (RF receiving block) Logic : B5~B15  ANTENNA(for RX) B5. Micro-Controller B6. Real time clock B10 +DC12V Battery B12. L.E.D Flash-Out B14. Parking Light-Out B13. Trunk Release B11. Siren Out B1. Low noise high-frequency amplify B7. Door Trigger Display B8. Key(IGN) Trigger upconverter B15. Starter Kill B3. Second amplify B2. Demodulation B4. LED & BUTTON B9. +DC5V Regulator

External Photos

Internal Photos

O44J1WAMLEDANT Circuit Descriptions. Block1 : Q1 amplipies the Radio frequency. Block2 : Q2 demodulates the radio frequency to digital AM-signal. Block3 : Operational amplifier U1-A amplifies the digitalized AM-signal; Block4 : These are the driver circuits Block5 : Micro-controller U1 receives the AM-signal. And it acts by the rf- command . Block6 : This is the real time circuit Resonator XR supplies the real time clock to the U1. Block7-8 : These are the sensing circuits of vehicle triggers. Block9-10. : This is the regulating circuit to supply (+)5V power from (+)12V of battery power. Block11-15. : These are the output drive circuits.

KTL Korea Testing Laboratory Page 1 of 9 TEST REPORT This test report only responds to the tested sample and shall not be reproduced except in full without written approval of the Korea Testing Laboratory. Tested and reported by Reviewed by Jeong-Min Kim, Senior Engineer Hee-Soo Kim , Telecommunication Team Manager KOREA TESTING LABORATORY FG101-01-02-00 222-13, Guro-Dong Guro-Gu Seoul Korea 152-053 http://www.ktl.re.kr Ref. Report No. 03-341-022 Name and address of the applicant Youngshin Electronic Co., Ltd. 4FL., Hirun Town Bldg. , 536-3, Unhaeng-Dong, Sihung, Kyungki-Do, 429-060 Korea Standard / Test regulation FCC Part 15, Subpart B Test result Pass Incoming date : June 9, 2003 Test item(s) ; Superregenerative Receiver (One Way Car Alarm System) Model/type ref. ; 1WAMLEDANT Manufacturer ; Youngshin Electronic Co., Ltd. Additional information ; -Required Authorization : Certification -FCC ID. : O44J1WAMLEDANT Test date : July 1, 2003 Issue date : July 3, 2003 Ref. Report No. 03 - 341 – 022 Page 2 of 9 Korea Testing Laboratory Telecommunication Team 222-13, Guro3-dong, Guro-gu, Seoul Korea 152-848 TABLE OF CONTENTS I. GENERAL INFORMATION 3 1. Grantee’s Name and Mailing Address 2. Manufacturer's Name and Mailing Address 3. Equipment Descriptions 4. Rules and Regulations 5. Measuring Procedure 6. Place of Measurement 7. Date of Measurement . GENERAL REQUIREMENTS OF THE EUT 4 1. Labeling Requirement (Section 15.19) 2. Information to User (Sections 15.21) 3. Special Accessories (Section 15.27) . RADIATED EMISSION MEASUREMENT (Section 15.109) 5 1. Test Procedure 2. Photograph for the test configuration 3. Sample Calculation 4. Measurement Data 5. Reference Data . TEST EQUIPMENTS USED FOR MEASUREMENT 9 Ref. Report No. 03 - 341 – 022 Page 3 of 9 Korea Testing Laboratory Telecommunication Team 222-13, Guro3-dong, Guro-gu, Seoul Korea 152-848 . GENERAL INFORMATION 1. Grantee’s Name and : Youngshin Electronics Co., Ltd. Mailing Address 4FL., Hirun Town Bldg., 536-3, Unhaeng-Dong, Sihung,, Kyungki-Do, 429-060 Korea 2. Manufacturer's Name and : Youngshin Electronics Co., Ltd. Mailing Address 4FL., Hirun Town Bldg., 536-3, Unhaeng-Dong, Sihung,, Kyungki-Do, 429-060 Korea 3. Equipment Descriptions 3.1 Tunning Frequency : 433.92 MHz 3.2 Detect Method : Superregenerative Detector 3.3 Power Supply : DC 12V(Car Battery) 4. Rules and Regulations : FCC Part 15, Subpart B 5. Measuring Procedure : ANSI C63.4-2001 6. Place of Measurement : Absorber-lined Room (KTL) 7. Date of Measurement 7.1 Conducted Emission : Not Applicable 7.2 Radiated Emission : July 1, 2003 Ref. Report No. 03 - 341 – 022 Page 4 of 9 Korea Testing Laboratory Telecommunication Team 222-13, Guro3-dong, Guro-gu, Seoul Korea 152-848 . GENERAL REQUIREMENTS OF THE EUT 1. Labeling Requirement (Section 15.19) 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 interface, and (2) this device must accept any interference received, including interference that may cause undesired operation. 1.1 Location of Label : User’s Guide Manual 1.2 How Applied : Printed 2. Information to User (Section 15.21) The following or similar statements were provided in the manual for user instruction. Please refer page 1 of the attached manual for details. CAUTION : Any changes or modifications in construction of this device which are not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 3. Special Accessories (Section 15.27) 3.1 Were the special Accessories provided? [ ] yes, [ x ] no 3.2 If yes, details for the special accessories are as follows : 3.3 If yes, were the appropriate instructions provided on the first page of the text concerned with the installation of the device? [ ] yes, [ ] no 3.4 Are these accessories provided of the type which can be readily obtained from multiple retail outlets ? [ ] yes, [ ] no And therefore does the manual specify what additional components or accessories are required to used in order to comply with the Rules? [ ] yes, [ ] no Ref. Report No. 03 - 341 – 022 Page 5 of 9 Korea Testing Laboratory Telecommunication Team 222-13, Guro3-dong, Guro-gu, Seoul Korea 152-848 . RADIATED EMISSION MEASUREMENT (Section 15.109) 1. Test Procedure 1.1 Preliminary Testing for Reference Preliminary testing was performed in a KTL absorber-lined room to determine the emission characteristics of the EUT. The EUT was placed on the wooden table which has dimensions of 0.8 meters in height, 1 meter in length and 1.5 meters in width. Receiving antenna (Biconi-Log antenna : 30 to 2000MHz or Horn Antenna : 1 to 18GHz) was placed at the distance of 1 meter from the EUT. In order to cohere the individual components of the characteristic broadband emission from the receiver(EUT), a RF generator(CW signal) and a log-periodic antenna were used. The frequency and output level of the generator were adjusted for highest observed coherent receiver emissions on the spectrum analyzer with RF amplifier. An attempt was made to maximize the emission level with the various configurations of the EUT. The effect of changing the position of the cable was observed to find the worst case configuration while rotating the table and varying antenna height and it’s polarization. Radiated and spurious emissions were checked from 30 MHz to 3000 MHz according to section 15.33. 1.2 Final Radiated Emission Test at an Absorber-Lined Room The final measurement of radiated field strength was carried out in a KTL Absorber-Lined Room that was listed up at FCC according to the "Radiated Emissions Testing" procedure specified by ANSI C63.4. Based on the test results in preliminary test, measurement was made in same test set up and configuration which produced maximum emission level. Receiving antenna was installed at 3-meter distance from the EUT, and was connected to an EMI receiver or spectrum analyzer(for above 1GHz) with a RF …

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Ref. Report No. 03 - 341 – 022 Page 6 of 9 Korea Testing Laboratory Telecommunication Team 222-13, Guro3-dong, Guro-gu, Seoul Korea 152-848 2. Photograph of the test configuration 3. Sample Calculation The emission level measured in decibels above one microvolt (dB㎶) was converted into microvolt per meter (㎶/m) as shown in following sample calculation. For example : Measured Value at 437.2 MHz < 35.0 dB㎶ + Antenna Factor 16.7 dB/m + Cable Loss 4.0 dB - Preamplifier 30.0 dB - Distance Correction Factor * 0.0 dB ------------------------------------------------------------------------------------------- = Radiated Emission < 25.7 dB㎶/m ( = < 19.3 ㎶/m ) * Extrapolated from the measured distance to the specified distance by an inverse linear distance extrapolation.