F5J604208RC Toy Transmitter

TABLE OF CONTENTS APPLICANT: KA WAH MANUFACTORY LIMITED FCC ID: F5J604208 PAGE 1.............731 FORM PAGE 2.............POWER OF ATTORNEY LETTER PAGE 3(a,b)........TEST PROCEDURE PAGE 4.............CIRCUIT DESCRIPTION PAGE 5.............BLOCK DIAGRAM PAGE 6.............SCHEMATIC PAGE 7.............PARTS LIST PAGE 8(a,b)........INSTRUCTION MANUAL PAGE 9(a,b)........RADIATION INTERFERENCE TEST DATA PAGE 10(a,b)........OCCUPIED BANDWIDTH TEST DATA PAGE 11-14..........PHOTOGRAPHS FCC ID LABEL SAMPLE & LOCATION ON PG. 12 F:\CUS\K\KAWAH\KAW115H8.RPT APPLICANT: KA WAH MANUFACTORY LIMITED FCC ID: F5J604208 TEST EQUIPMENT LIST 1. Spectrum Analyzer: Hewlett Packard 8566B, with preselector HP 85685A, & Quasi-Peak Adapter HP 8565OA, & HP 8449B OPT H02 Cal. 9/30/97 2. Eaton Biconnical Antenna Model 94455-1 20-200 MHz Serial No. 0997 Cal. 9/17/97 3. Electro-Metric Dipole Kit, 20-1000 MHz, Model TDA 25 cal. 5/15/97 4. Electro-Metric Horn 1-18 GHz, Model RGA-180, Cal. 9/24/97 5. Electro-Metric Antennas Model TDS-25-1, TDS-25-2, 9/3/97 6. Electro-Metric Line Impedance Stabilization Network Model No. EM-7821, Serial No. 101; 100KHz-30MHz 50uH. 9/30/97 7. Electro-Metric Line Impedance Stabilization Network Model No. EM-7820, Serial No. 2682; 10KHz-30MHz 50uH. 9/30/97 TEST PROCEDURE GENERAL: This report shall NOT be reproduced except in full without the written approval of TIMCO ENGINEERING, INC. RADIATION INTERFERENCE: The test procedure used was ANSI STANDARD C63.4-1992 using a HEWLETT PACKARD spectrum analyzer with a prese- lector. The bandwidth of the spectrum analyzer was 100 kHz with an appropriate sweep speed. The analyzer was calibrated in dB above a microvolt at the output of the antenna. The resolution bandwidth was 100KHz and the video bandwidth was 300KHz. The ambient temperature of the UUT was 74.5oF with a humidity of 74%. FORMULA OF CONVERSION FACTORS: The Field Strength at 3m was estab- lished by adding the meter reading of the spectrum analyzer (which is set to read in units of dBuV) to the antenna correction factor sup- plied by the antenna manufacturer. The antenna correction factors are stated in terms of dB. The gain of the Preselector was accounted for in the Spectrum Analyzer Meter Reading. Example: Freq (MHz) METER READING + ACF = FS 33 20 dBuV + 10.36 dB = 30.36 dBuV/m @ 3m POWER LINE CONDUCTED INTERFERENCE: The procedure used was ANSI STAN- DARD C63.4-1992 using a 50uH LISN. Both lines were observed. The bandwidth of the spectrum analyzer was 10kHz with an appro- priate sweep speed. The ambient temperature of the UUT was 74.5oF with a humidity of 74%. APPLICANT: KA WAH MANUFACTORY LIMITED FCC ID: F5J604208 REPORT #: F:\CUS\K\KAWAH\KAW115H8.RPT PAGE #: 3a TEST PROCEDURES CONTINUED APPLICANT: KA WAH MANUFACTORY LIMITED FCC ID: F5J604208 ANSI STANDARD C63.4-1992 10.1.7 MEASUREMENT PROCEDURES: The unit under test was placed on a table 80 cm high and with dimensions of 1m by 1.5m. The table used for radiated measurements is capable of continuous rotation. When an emission was found, the table was rotated to produce the maximum signal strength. At this point, the antenna was raised and lowered from 1m to 4m. The antenna was placed in both the horizontal and vertical planes. The situation was similar for the conducted measurement except that the table did not rotate. The EUT was setup as described in ANSIC63.4-1992 with the EUT 40 cm from the vertical ground wall. APPLICANT: KA WAH MANUFACTORY LIMITED FCC ID: F5J604208 REPORT #: F:\CUS\K\KAWAH\KAW115H8.RPT PAGE #: 3b APPLICANT: KA WAH MANUFACTORY LIMITED FCC ID: F5J604208 CIRCUIT DESCRIPTION: In the transmit mode the momentary switches SW-L, SW-R, SW-B, & SW-F provide input to the encoder intergrated circuit U1. The output of U1 modulates the RF output stage Q2 via Q3 by varing the emitter current. The crystal oscillator Q1 is coupled to the modulated stage Q2 via C3. From Q2 the signal is fed through a doubled tuned circuit T11,C12 and then to the filter made up of C9, C7, L2, C8, & L3. The output ofthe filter is connected to the antenna. ANTENNA AND GROUND CIRCUITRY This unit makes use of a extended length 9 inch antenna. The antenna is inductively coupled. This unit is powered from a 9.0V battery. No ground connection is provided. The unit relies on the ground tract of the printed circuit board. APPLICANT: KA WAH MANUFACTORY LIMITED FCC ID: F5J604208 REPORT #: F:\CUS\K\KAWAH\KAW115H8.RPT PAGE #: 4 APPLICANT: KA WAH MANUFACTORY LIMITED FCC ID: F5J604208 NAME OF TEST: RADIATION INTERFERENCE RULES PART NO.: 15.227 REQUIREMENTS: CARRIER FREQUENCY WILL NOT EXCEED 80 dBuV/m AT 3M. OUT-OF-BAND EMISSIONS SHALL NOT EXCEED: 30 - 88 MHz 40.0 dBuV/M MEASURED AT 3 METERS 88 - 216 MHz 43.5 dBuV/M 216 - 960 MHz 46.0 dBuV/M ABOVE 960 MHz 54.0 dBuV/M TEST DATA: EMISSION METER READING COAX ANTENNA FIELD FREQUENCY AT 3 METERS LOSS CORRECTION STRENGTH MARGIN ANT. MHz dBuV dB FACTOR dB dBuV/m@3m dB POL. 27.15 48.50 0.20 11.75 60.45 19.55 V 54.29 24.80 0.80 9.61 35.21 4.79 V 81.44 24.30 0.80 12.13 37.23 2.77 V 108.58 23.40 0.80 8.38 32.58 10.92 V 135.73 9.10 0.80 15.32 25.22 18.28 V 162.87 7.30 0.90 17.17 25.37 18.13 V 190.02 8.30 0.90 13.67 22.87 20.63 H 217.16 10.30 1.20 12.42 23.92 22.08 H 244.31 16.30 1.20 13.21 30.71 15.29 H 271.45 20.10 1.40 14.00 35.50 10.50 H 298.60 19.20 1.40 15.61 36.21 9.79 H 325.74 18.50 1.40 14.85 34.75 11.25 H 352.89 28.40 1.40 15.63 45.43 0.57 H 380.03 17.90 1.40 16.42 35.72 10.28 H 407.18 9.00 1.60 17.17 27.77 18.23 H 434.33 5.20 1.60 17.79 24.59 21.41 H SAMPLE CALCULATION: FSdBuV/m = MR(dBuV) + ACFdB. APPLICANT: KA WAH MANUFACTORY LIMITED FCC ID : F5J604208 REPORT #: F:\CUS\K\KAWAH\KAW115H8.RPT PAGE #: 9a APPLICANT: KA WAH MANUFACTORY LIMITED FCC ID: F5J604208 NAME OF TEST: RADIATION INTERFERENCE CONTINUED TEST PROCEDURE: The procedure used was ANSI STANDARD C63.4-1992. The spectrum was scanned from 30 MHz to 1000 MHz. When an emission was found, the table was rotated to produce the maximum signal strength. The antenna was…

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