PHC1420Family Radio Transceiver

TABLE OF CONTENTS LIST APPLICANT: LINKOMM COMMUNICATIONS NETWORK FCC ID: PHC1420 TEST REPORT: PAGE 1......COVER SHEET - GENERAL INFORMATION & TECHNICAL DESCR. PAGE 2......TECHNICAL DESCRIPTION CONTINUED & RF POWER OUTPUT PAGE 3......MODULATION CHARACTERISTICS AND OCCUPIED BANDWIDTH PAGE 4......METHOD OF MEASURING OCCUPIED BANDWIDTH PAGE 5......OCCUPIED BANDWIDTH PLOT - CW PAGE 6......OCCUPIED BANDWIDTH PLOT PAGE 7......UNWANTED RADIATION PAGE 8......MEHTOD OF MEASURING UNWANTED RADIATION PAGE 9......FREQUENCY STABILITY PAGE 10.....LIST OF TEST EQUIPMENT EXHIBITS CONTAINING: EXHIBIT 1.........FCC ID LABEL SAMPLE EXHIBIT 2.........SKETCH OF FCC ID LABEL LOCATION EXHIBIT 3A........EXTERNAL PHOTO - FRONT VIEW EXHIBIT 3B........EXTERNAL PHOTO - TOP VIEW EXHIBIT 3C........EXTERNAL PHOTO - BOTTOM VIEW EXHIBIT 3D........EXTERNAL PHOTO - LEFT SIDE VIEW EXHIBIT 3E........EXTERNAL PHOTO - RIGHT SIDE VIEW EXHIBIT 3F........EXTERNAL PHOTO - REAR VIEW EXHIBIT 3G........INTERNAL PHOTO - COMPONENT VIEW EXHIBIT 3H........INTERNAL PHOTO - COPPER VIEW EXHIBIT 4.........BLOCK DIAGRAM EXHIBIT 5A-5B.....SCHEMATIC - RF EXHIBIT 6.........USERS MANUAL EXHIBIT 7A-7B.....CIRCUIT DESCRIPTION EXHIBIT 8A-8B.....SPECIFICATION SHEET EXHIBIT 9.........AUDIO FREQUENCY RESPONSE GRAPH EXHIBIT 10A.......MODULATION LIMITING PLOT - 300 Hz EXHIBIT 10B.......MODULATION LIMITING PLOT - 1000 Hz EXHIBIT 10C.......MODULATION LIMITING PLOT - 3000 Hz EXHIBIT 11........AUDIO LOW PASS FILTER GRAPH EXHIBIT 12........TEST SET UP PHOTO APPLICANT: LINKOMM COMMUNICATIONS NETWORK FCC ID: PHC1420 REPORT #: T:\CUS\L\LINKOMM\333BK1\333bk1rpt.doc PAGE: TABLE OF CONTENTS GENERAL INFORMATION REQUIRED FOR TYPE ACCEPTANCE 2.1033(c)(1)(2) LINKOMM COMMUNICATIONS NETWORK will manufacture the FCCID: PHC1420 FAMILY RADIO SERVICES 14 CHANNEL TRANSCEIVER in quantity, for use under FCC RULES PART 95. The UUT is a PTT Radio with a maximum duty cycle of 50%. LINKOMM COMMUNICATIONS NETWORK #371-36, GASAN-DONG GEUMCHEON-GU SEOUL, KOREA 158-803 2.1033 (c) TECHNICAL DESCRIPTION 2.1033(c)(3) Instruction book. A draft copy of the instruction manual is included as EXHIBIT 6. 2.1033(c) (4) Type of Emission: 10K0F3E 95.631 Bn = 2M + 2DK M = 3000 D = 2.0K Bn = 2(3.0)+2(2.0) = 10.0K Authorized Bandwidth 12.5KHz 2.1033(c)(5) 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 2.1033(c)(6)(7) Power Output shall not exceed 0.500Watts effective 95.639 radiated power. There can be no provisions for 95.649 increasing the power or varing the power. The Maximum Output Power Rating: 300 milliWatts effective radiated power. 95.647 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. 2.1033(c)(8) DC Voltages and Current into Final Amplifier: FINAL AMPLIFIER ONLY Vce = 4.5 Volts DC Ice = 0.12A. Pin = 0.54 Watts FCC ID: PHC1420 PAGE #: 1 2.1033(c)(10) Complete Circuit Diagrams: The circuit diagram is Included as EXHIBIT 5A-5B of this report. The block diagram is included as EXHIBIT 4 of this report. 2.1033(c)(11) A photograph or a drawing of the equipment identifica tion label is included as exhibit No. 1. 2.1033(c)(12) Photographs(8"X10") of the equipment of sufficient clarity to reveal equipment construction and layout, including meters, labels for controls, including any view under shields - See EXHIBIT 3A-3H. 2.1033(c)(13) Digital modulation is not allowed. 2.1033(c)(14) The data required by 2.1046 through 2.1057 is submitted below. 2.1046(a) RF power output. 95.639 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 = 300 milliWatts ERP 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 80cm above ground on a rotatable platform. APPLICANT: LINKOMM COMMUNICATIONS NETWORK FCC ID: PHC1420 REPORT #: T:\CUS\L\LINKOMM\333BK1\333bk1rpt.doc PAGE #: 2 2.1047(a)(b) Modulation characteristics: AUDIO FREQUENCY RESPONSE The audio frequency response was measured in ac- cordance with TIA/EIA Specification 603. 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. See Exhibit 9. 2.1047(b) 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. Curves are provided for audio input frequencies of 300, 1000, and 3000 Hz. See Exhibit 10A-10C. 95.637(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 that the attenuation at 1KHz. See Exhibit 11. 2.9895c) 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, and adjusted for 50% modulation plus 16 dB.The spectrum analyzer was set with the unmodulated carrier at the top of the screen. The test procedure diagram an…

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Linkomm Comm. PHC1026 0 10 20 30 40 50 60 100100010000 Freque ncy rms mVolts audio response LINKOMM LINKOMM COMMUNICATIONS NETWORK FCC ID : PHC1420 JOB # : 333BK1 EXHIBIT # : 9

Modulation Limiting Linkomm Comm. PHC1026 0 500 1000 1500 0 2040 6080 rms mVolts Deviation 300 Hz LINKOMM COMMUNICAITONS NETWORK FCC ID: PHC1420 JOB # : 333BK1 EXHIBIT # : 10A MODULATION LIMITING

Modulation Limiting Linkomm Comm. PHC1026 0 500 1000 1500 2000 2500 3000 0 1020304050 rms mVolts Deviatio n 1000 Hz LINKOMM COMMUNICATIONS NETWORK FCC ID : PHC1420 JOB # : 333BK1 EXHIBIT # : 10B

Modulation Limiting Linkomm Comm. PHC1026 0 200 400 600 800 1000 1200 0 10 203040 rms mVolts Deviatio n 3000 Hz LINKOMM COMMUNICATIONS NETWORK FCC ID : PHC1026 JOB # : 333BK1 EXHIBIT # : 10C PHC1420