M23FRS-460Family Radio Transceiver

TABLE OF CONTENTS LIST APPLICANT: WOOJIN E & T, LTD. FCC ID: M23FRS-460 TEST REPORT: PAGE 1......COVER SHEET - GENERAL INFORMATION & TECHNICAL DESCR. PAGE 2......TECHNICAL DESCRIPTION CONTD. & RF POWER OUTPUT PAGE 3......RF POWER OUTPUT CONTD. & MODULATION CHARACTERISTICS PAGE 4......OCCUPIED BANDWIDTH PAGE 5......SPURIOUS EMISSIONS AT ANTENNA TERMINALS AND FIELD STRENGTH OF SPURIOUS EMISSIONS PAGE 6......METHOD OF MEASURING RADIATED SPURIOUS EMISSIONS PAGE 7......FREQUENCY STABILITY PAGE 8......CERTIFICATION OF TECHNICAL DATA AND LIST OF TEST EQUIPMENT EXHIBITS CONTAINING: EXHIBIT 1.........POWER OF ATTORNEY LETTER EXHIBIT 2.........FCC ID LABEL SAMPLE EXHIBIT 3.........SKETCH OF FCC ID LABEL LOCATION EXHIBIT 4A........EXTERNAL REAR VIEW PHOTOGRAPH EXHIBIT 4B........EXTERNAL FRONT VIEW PHOTOGRAPH EXHIBIT 4C-4D.....INTERNAL COMPONENT SIDE PHOTOGRAPH EXHIBIT 4E-4F.....INTERNAL SOLDER SIDE PHOTOGRAPH EXHIBIT 5.........BLOCK DIAGRAM EXHIBIT 6A-6E.....PARTS LIST EXHIBIT 7.........SCHEMATIC EXHIBIT 8A-8U.....USER'S MANUAL EXHIBIT 9.........AUDIO FREQUENCY RESPONSE GRAPHS EXHIBIT 10A-10C...AUDIO INPUT VS DEVIATION GRAPH EXHIBIT 11........AUDIO LOW PASS FILTER GRAPH EXHIBIT 12........OCCUPIED BANDWIDTH CW PLOT EXHIBIT 13........OCCUPIED BANDWIDTH With DEVIATION PLOT APPLICANT: WOOJIN E & T, LTD. FCC ID: M23FRS-460 REPORT #: F:\CUS\W\WOOJIN\WET224A9.RPT PAGE: TABLE OF CONTENTS GENERAL_INFORMATION_REQUIRED FOR_TYPE_ACCEPTANCE 2.983 (a,b,c) WOOJIN E & T, LTD. will manufacture the FCCID: M23FRS-460 FAMILY RADIO SERVICES 14 CHANNEL TRANSCEIVER in quantity, for use under FCC RULES PART 95. 2.983 (d) TECHNICAL_DESCRIPTION 2.983 (d) (1) Type of Emission: 10K2F3E 95.629 Bn = 2M + 2DK M = 3000 D = 2.1K Bn = 2(3.0)+2(2.1) = 10.20K Authorized Bandwidth 12.5KHz 2.983 (d) (2) Frequency Range: 1. 462.5625 8. 467.5625 95.627 2. 462.5875 9. 467.5875 3. 462.6125 10. 467.6125 4. 462.6375 11. 467.6375 5. 462.6625 12. 467.6625 6. 462.6875 13. 467.6875 7. 462.7125 14. 467.7125 MHz 2.983 (d) (3) Power Output shall not exceed 0.500Watts effective 95.637 radiated power. There can be no provisions for 95.647 increasing the power. 2.983 (d) (4) Maximum Output Power Rating: 500 milliWatts 95.637 effective radiated power. 95.645 The antenna is an intergral part to the unit, it cannot be removed without rendering the unit inoperative. In order to remove the antenna the case must unscrewed, then the PCB assemblies must be removed then the antenna can be removed. 2.983 (d) (5) DC Voltages and Current into Final Amplifier: FINAL AMPLIFIER ONLY Vce = 4.5 Volts DC Ice = 0.33A. Pin = 1.51 Watts APPLICANT: WOOJIN E & T, LTD. FCC ID: M23FRS-460 REPORT #: F:\CUS\W\WOOJIN\WET224A9.RPT PAGE #: 1 2.983 (d) (6) Function of each electron tube or semiconductor device or other active circuit device: SEE EXHIBIT #: 2.983(d) (7) Complete Circuit Diagrams: The circuit diagram is included as EXHIBIT of this report. The block diagrams are included as EXHIBIT 5 of this report. 2.983(d) (8) Instruction book. A draft copy of the instruction manual is included as EXHIBIT 8. 2.983 (d) (9) Tune-up procedure. The tune-up procedure is included INCLUDED IN USER'S MANUAL. (10) Description of all circuitry and devices provided for determining and stabilizing frequency is given in EXHIBIT 8. The crystal specifications are included as PAGES NA. 2.983 (d)(11) Description of any circuits or devices employed for suppression of spurious radiation, for limit- ing modulation, and for limiting power will be INCLUDED IN USER'S MANUAL. (12) Digital modulation. This unit does not use digital modulation. 2.983(e) The data required by 2.985 through 2.997 is submit ted below. 2.985(a) RF_power_output. 95.637 RF power is measured by measuring the radiated power at 3 meters and then replacing the transmitter with a signal generator to determine the effective radiated power. The ERP shall not exceed 0.500 Watts. MEASURED POWER OUTPUT = 500 milliWatts ERP APPLICANT: WOOJIN E & T, LTD. FCC ID: M23FRS-460 REPORT #: F:\CUS\W\WOOJIN\WET224A9.RPT PAGE #: 2 R.F. POWER OUTPUT HP TEST SET UP Spectrum Analyzer /-------\ /-----------------\ | | | | TRANSMITTER | | | | | UNDER TEST WITH | \--| | | INTERNAL ANTENNA| | | | \-----------------/ | | | | | \-------/ | | |<-- 3.0 meters-->| /-------------\ | SIGNAL | DIPOLE | Tuned, Calibrated | GENERATOR | ANTENNA | Antenna which may | |----------/ be raised from 1 \-------------/ to 4 meters above ground and changed in polarization Equipment placed 1 meter above ground on a rotatable platform. 2.987(a)(b) Modulation_characteristics: AUDIO_FREQUENCY_RESPONSE The audio frequency response was measured in ac- cordance with TIA/EIA Specification 603. The audio frequency response curve is shown on the next page. The audio signal was fed into a dummy microphone circuit and into the microphone connector. The input required to produce 30 percent modulation level was measured. 2.987(b) 1 Audio_input_versus_modulation The audio input level needed for a particular per- percentage of modulation was measured in accor- dance with TIA/EIA Specification 603. The audio input curves versus modulation are on the following pages. Curves are provided for audio input frequen- cies of 300, 1000, and 3000 Hz. 95.635(b) Post Limiter Filter The filter must be between the modulation limiter and the modulated stage. At any frequency between 3 & 20KHz the filter must have an attenuation of 60log (f/3) greater tha the attenuation at 1KHz. see the proceeding page. APPLICANT: WOOJIN E & T, LTD. FCC ID: M23FRS-460 REPORT #: F:\CUS\W\WOOJIN\WET224A9.RPT PAGE #: 3 2.989(c) EMISSION BANDWIDTH: 95.633(b)(1)(3)(7) Data in the plots shows that the sidebands from greater than 50% to 100% of the authorized bandwidth must be attenuated by at least 25dB and from 100 to 250% the sidebands must be attenuated by at least 35dB. Beyond 250% the sidebands must be attenuated by at least 43+log10(TP). The transmitter was modulated with 2500 Hz, adjusted for 50% modulation plus 16 dB. The sp…

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Deviation rms Volts frequency 150062300 13.5400 8.5500 4.75700 4.2900 41000 1.951500 1.352000 1.12500 1.13000 WOOJIN E & T Co. LTD. Model: FRS-460 0 10 20 30 40 50 60 70 0500100015002000250030003500 Frequency rms mVolts audio re audio response

300 0.044500 0.0881000 0.1141500 0.1382000 0.22400 0.252400 0.32400 Modulation Limiting WOOJIN E & T Co. LTD. Model: FRS-460 0 500 1000 1500 2000 2500 3000 00.050.10.150.20.250.30.35 rms Volts Deviation 300 Hz 300 Hz

1000 0.0032500 0.0071000 0.01021500 0.0111750 0.01252000 0.0192400 0.022400 0.032400 Modulation Limiting WOOJIN E & T Co. LTD Model: FRS-460 0 500 1000 1500 2000 2500 3000 00.0050.010.0150.020.0250.030.035 rms Volts Deviation 1000 Hz 1000 Hz

3000 0.00135500 0.002381000 0.004851500 0.00741750 0.01081800 0.0162000 0.022000 0.0252000 Modulation Limiting WOOJIN E & T Co. LTD. Model: FRS-460 0 500 1000 1500 2000 2500 00.0050.010.0150.020.0250.03 rms Volts Deviation 3000 Hz 3000 Hz