I7CMODELTX-BAT49 MHz Remote Control Transmitter

TIMCO ENGINEERING INC. PO Box 370 849 SR 45 Newberry, Florida 32669 Ph. 352.472.5500 Fax. 352.331.8840 [email protected] 13 Jan. 00 TO: Diane Poole FCC Subject: MICTRONICS INC. FCCID: I7CMODELTX-BAT Reference: EA 95769 Attached is a plot of the combined CW & modulated signals. I also spoke with the manufacturer and said that the frequency range that they use is 49.83 to 49.89MHz. Not 49.82 to 49.90MHz as we assumed and put on the 731 form. So please change the frequency range on this application. Thanks for your help. BEST REGARDS, Sid Sanders CHECK OUT OUR WEBSITE @www.timcoengr.com

TABLE OF CONTENTS LIST APPLICANT: Microtronics, Inc. FCC ID: I7CMODELTX-BAT TEST REPORT CONTAINING: PAGE 1-2....TEST PROCEDURE & CIRCUIT DESCRIPTION PAGE 3......RADIATION INTERFERENCE TEST DATA PAGE 4......OCCUPIED BANDWIDTH TEST DATA EXHIBITS CONTAINING: EXHIBIT 1............POWER OF ATTORNEY LETTER EXHIBIT 2............BLOCK DIAGRAM EXHIBIT 3............SCHEMATIC EXHIBIT 4A-4B........PARTS LIST EXHIBIT 5A-5L........INSTRUCTION MANUAL EXHIBIT 6............TUNING PROCEDURE EXHIBIT 7............SAMPLE OF FCC ID LABEL EXHIBIT 8............LOCATON OF FCC ID LABEL EXHIBIT 9............EXTERNAL PHOTO - FRONT SIDE EXHIBIT 10...........EXTERNAL PHOTO - BACK SIDE EXHIBIT 11...........INTERNAL PHOTO - COMPONENT SIDE EXHIBIT 12-13........INTERNAL PHOTO - COPPER SIDE EXHIBIT 14...........OCCUPIED BANDWIDTH PLOT - CW EXHIBIT 15...........OCCUPIED BANDWIDTH PLOT APPLICANT: Microtronics, Inc. FCC ID: I7CMODELTX-BAT REPORT #: T:\CUS\M\MICROTRO\MIC227U9\MIC227U9.RPT PAGE: TABLE OF CONTENTS LIST APPLICANT: Microtronics, Inc. FCC ID: I7CMODELTX-BAT TEST EQUIPMENT LIST 1. Spectrum Analyzer: Hewlett Packard 8566B - Opt 462, w/ preselector 85685A, & Quasi-Peak Adapter HP 8565OA, & HP 8449B - OPT H02 Cal. 7/6/99 2. Signal Generator, Hewlett Packard 8640B, cal. 9/23/99 3. Signal Generator, HP 8614A Serial No.2015A07428 cal. 5/27/99 3. Eaton Biconnical Antenna Model 94455-1 20-200 MHz Serial No. 0997 Cal. 10/30/98 4. Electro-Metric Dipole Kit, 20-1000 MHz, Model TDA-30 10/31/98 5. Electro-Metric Horn 1-18 GHz, Model RGA-180, Cal. 4/27/99 6. Electro-Metric Antennas Model TDA-30/1-4,Cal. 10/15/98 7. Electro-Metric Line Impedance Stabilization Network Model No. EM-7821, Serial No. 101; 100KHz-30MHz 50uH. Cal.11/19/98 8. Electro-Metric Line Impedance Stabilization Network Model No. EM-7820, Serial No. 2682; 10KHz-30MHz 50uH. Cal. 11/19/98 9. Special low loss cable was used above 1 GHz 10. Tenney Temperature Chamber 11. AC Voltmeter, HP 400FL, Serial No 2213A14499. Cal. 9/21/99 12. Digital Multimeter, Fluke 8010A/12A, Serial No. 4810047. Cal 9/21/99 13. Digital Multimeter, Fluke 77, Serial No. 43850817. Cal 9/21/99 14. Oscilloscope, Tektronix 2230, Serial No. 300572. Cal 9/23/99 15. Frequency Counter, HP 5385A, Serial No. 3242A07460. Cal 10/6/99 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 80oC with a humidity of 76%. 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 FCC ID: I7CMODELTX-BAT REPORT #: T:\CUS\M\MICROTRO\MIC227U9\MIC227U9.RPT PAGE #: 1 TEST PROCEDURES CONTINUED APPLICANT: Microtronics, Inc. FCC ID: I7CMODELTX-BAT 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. CIRCUIT_DESCRIPTION: In the transmit mode the speaker is switched so that it is con- nected to the input of the audio amplifiers Q1, Q4 & Q5 and the output of Q5 drives the transformer T2, which modulates the voltage of the crystal controlled oscillator, Q6. The crystal controlled oscillator is the transmitter. Q6 is connected to the antenna via the output filter made up of C24, C2, & L1. ANTENNA_AND_GROUND_CIRCUITRY This unit makes use of a external 5" 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: Microtronics, Inc. FCC ID: I7CMODELTX-BAT REPORT #: T:\CUS\M\MICROTRO\MIC227U9\MIC227U9.RPT PAGE #: 2 APPLICANT: Microtronics, Inc. FCC ID: I7CMODELTX-BAT NAME OF TEST: RADIATION INTERFERENCE RULES PART NO.: 15.235 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: PEAK 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. 49.86 67.00 0.25 10.99 78.24 1.76 V 33.00 25.70 0.25 10.36 36.31 3.69 V SAMPLE CALCULATION: FSdBuV/m = MR(dBuV) + ACFdB. 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 placed in both the horizontal and vertical planes and the worse case emissions were reported. The UUT was tested in 3 orthogonal planes. TEST RESULTS: THE UNIT DOES MEET THE FCC REQUIREMENTS. PERFORMED BY: S. S. SANDERS DATE: October 20, 1999 APPLICANT: Microtronics, Inc. FCC ID: I7CMODELTX-BAT REPO…

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