BSYWT-131

TABLE OF CONTENTS LIST APPLICANT: GMT INDUSTRIAL LTD. FCC ID: BSYWT-131 TEST REPORT CONTAINING: PAGE 1......TEST PROCEDURE PAGE 2......TEST PROCEDURE CONDTD. AND 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-4C........PARTS LIST EXHIBIT 5A-5B........INSTRUCTION MANUAL EXHIBIT 6............SAMPLE OF FCC ID LABEL EXHIBIT 7............LOCATION OF FCC ID LABEL EXHIBIT 8............EXTERNAL PHOTO - FRONT AND REAR VIEW EXHIBIT 9............INTERNAL PHOTO - COMPONENT SIDE EXHIBIT 10...........INTERNAL PHOTO - COPPER SIDE EXHIBIT 11...........OCCUPIED BANDWIDTH PLOT - CW EXHIBIT 12...........OCCUPIED BANDWIDTH PLOT - TONE EXHIBIT 13...........OCCUPIED BANDWIDTH PLOT - CODE KEY APPLICANT: GMT INDUSTRIAL LTD. FCC ID: BSYWT-131 REPORT #: F:\CUS\G\GMT\GMT105H9.RPT PAGE: TABLE OF CONTENTS LIST APPLICANT: GMT INDUSTRIAL LTD. FCC ID: BSYWT-131 TEST EQUIPMENT LIST 1. Spectrum Analyzer: Hewlett Packard 8566B - Opt 462, w/ preselector 85685A, & Quasi-Peak Adapter HP 8565OA, & HP 8449B - OPT H02 Cal. 6/26/98 2. Signal Generator, Hewlett Packard 8640B, cal. 10/1/98 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. 10/30/98 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 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 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 80oC with a humidity of 76%. APPLICANT: GMT INDUSTRIAL LTD. FCC ID: BSYWT-131 REPORT #: F:\CUS\G\GMT\GMT105H9.RPT PAGE #: 1 TEST PROCEDURES CONTINUED APPLICANT: GMT INDUSTRIAL LTD. FCC ID: BSYWT-131 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 microphone picks up the audio and feeds it to the audio preamplifier Q2. From Q2 the audio goes to Q3 the audio amplifier which drives the transformer T4 which varies the voltage to D1 the varicap. Q4 is the crystal oscillator. From Q4 the RF signal is coupled through T5 to the RF amplifier Q5 which in turn drives T6. T6 is coupled to Q6 the output device which is connected to the low pass filter C43, T7, C45, C1 L4 & L5. In the receive mode the signal comes through the antenna switch to T1 which is connected to Q1 the RF amplifier. From Q1 the signal goes to U1 where it is amplified & converted & detected. The detected audio is connected to the volume control via C12 & R11. From the volume control VR1 the signal goes to U2 the audio amplifier which is connected to the speaker. 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: GMT INDUSTRIAL LTD. FCC ID: BSYWT-131 REPORT #: F:\CUS\G\GMT\GMT105H9.RPT PAGE #: 2 APPLICANT: GMT INDUSTRIAL LTD. FCC ID: BSYWT-131 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: 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 66.00 0.25 10.99 77.24 2.76 H 99.70 8.60 0.80 8.39 17.79 25.71 H 149.60 3.00 0.80 16.90 20.70 22.80 V 199.40 10.00 0.90 12.66 23.56 19.94 V 249.30 14.10 1.20 13.35 28.65 17.35 H 299.20 13.90 1.40 15.65 30.95 15.05 V 349.00 27.60 1.40 15.52 44.52 1.48 V 448.70 7.30 1.60 18.12 27.02 18.98 H 498.60 11.70 1.60 19.27 32.57 13.43 V 54…

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