K66GX2350SVHF Marine Transmitter

TIMCO ENGINEERING, INC. 849 N.W. STATE ROAD 45 P.O. BOX 370 NEWBERRY, FLORIDA 32669 OCTOBER 14, 1999 Mr. George Tannahill Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 REFERENCE: YAESU MUSEN CO., LTD.’S FCC ID: K66GX2350S CORRESPONDENCE ID #: EA94954 Dear George: Per your request of 10/8/99, I have attached the list of channel numbers and their corresponding frequencies for the US Mode of Operation. The reason the two emission designators are requested for this device is because for VHF marine operation, the modulation is 16KOF3E. For digital selective calling on CH70, the modulation is 16KOG3E. Please refer to page 44 of the Owner’s Manual. I have advised Yaesu that this unit will be approved as a ship station only and they understand this. Should you require any further information, please advise. Regards, Sharon A. Hoffman SAH/hs Encl.

TABLE OF CONTENTS LIST APPLICANT: YAESU MUSEN CO., LTD. FCC ID: K66GX2350S TEST REPORT: PAGE 1......COVER SHEET - GENERAL INFORMATION & TECHNICAL DESCR. PAGE 2......TECHNICAL DESCRIPTION CNTD. & RF POWER OUTPUT PAGE 3......MODULATION CHARACTERISTICS AND OCCUPIED BANDWIDTH PAGE 4......SPURIOUS EMISSIONS AT ANTENNA TERMINALS PAGE 5......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 PAGE 9......LETTER EXPLAINING SCHEMATICS AND BLOCK DIAGRAMS EXHIBIT CONTAINING: EXHIBIT 1.........POWER OF ATTORNEY LETTER EXHIBIT 2.........80.203 STATEMENT EXHIBIT 3.........FCC ID LABEL SAMPLE EXHIBIT 4.........SKETCH OF FCC ID LABEL LOCATION EXHIBIT 5A........EXTERNAL FRONT VIEW PHOTOGRAPH EXHIBIT 5B........EXTERNAL REAR VIEW PHOTOGRAPH EXHIBIT 5C........EXTERNAL TOP VIEW PHOTOGRAPH EXHIBIT 5D........EXTERNAL BOTTOM VIEW PHOTOGRAPH EXHIBIT 5E-5F.....EXTERNAL SIDE VIEW PHOTOGRAPH EXHIBIT 5G........INTERNAL CHASSIS VIEW PHOTO - COMPONENT SIDE EXHIBIT 5H........INTERNAL COMPONENT SIDE PHOTO EXHIBIT 5I-5J.....INTERNAL SOLDER SIDE PHOTO EXHIBIT 6.........MAIN BLOCK DIAGRAM - 2 PAGES EXHIBIT 7.........FRONT PART BLOCK DIAGRAM - 6 PAGES EXHIBIT 8.........PARTS LIST (23 PAGES) EXHIBIT 9.........SCHEMATIC - PA PCB EXHIBIT 10........MAIN SCHEMATIC (10 PAGES) EXHIBIT 11........LIST OF ACTIVE DEVICES (2 PAGES) EXHIBIT 12........USER'S MANUAL (25 PAGES) EXHIBIT 13........THEORY OF OPERATION (11 PAGES) EXHIBIT 14........TUNING PROCEDURE (4 PAGES) EXHIBIT 15........AUDIO FREQUENCY RESPONSE GRAPH EXHIBIT 16........AUDIO INPUT VS DEVIATION GRAPH EXHIBIT 17........AUDIO LOW PASS FILTER GRAPH EXHIBIT 18........OCCUPIED BANDWIDTH CW PLOT - HI LOWER EXHIBIT 19........OCCUPIED BANDWIDTH CW PLOT - LO POWER EXHIBIT 20........OCCUPIED BANDWIDTH PLOT - HI POWER EXHIBIT 21........OCCUPIED BANDWIDTH PLOT - LO POWER APPLICANT: YAESU MUSEN CO., LTD. FCC ID: K66GX2350S DATE: JULY 23, 1999 REPORT #: F:\CUS\Y\YAE\YAE295A9.RPT PAGE: TABLE OF CONTENTS GENERAL INFORMATION REQUIRED FOR TYPE ACCEPTANCE 2.983 (a,b,c) YAESU MUSEN CO., LTD. will sell the MODEL NO. K66GX2350S VHF Marine transmitter in quantity, for use under FCC RULES PART 80. 2.983 (d) TECHNICAL DESCRIPTION (1) Type of Emission: 16K0G3E/16K0F3E For 20KHz For 25KHz Bn=2M+2DK M = 3000 D = 4.6KHz (Peak Deviation) K=1 Bn = 2(3.0K) + 2(4.6K)(1) = 6.0K + 10.0 = 16.0K 80.205(A) ALLOWED AUTHORIZED BANDWIDTH = 20.00KHz. (2) Frequency Range: 156.025-157.425 MHz (3) Power Range and Controls:There is a user Power switch for High/Low Power. (4) Maximum Output Power Rating: High 25.0 Watts, 1.0Watt into a 50 ohm resistive load. (5) DC Voltages and Current into Final Amplifier: POWER INPUT FINAL AMPLIFIER ONLY High Low Vce = 13.6 Volts Vce = 13.6 VDC Ice = 4.50 A. Ice = 0.21 Pin = 62.1 Watts Pin = 2.8 Watts (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 9-10. The block diagram is included as EXHIBIT 6-7. (8) Instruction book. The instruction manual is included as EXHIBIT #8. APPLICANT: YAESU MUSEN CO., LTD. FCC ID: K66GX2350S DATE: JULY 23, 1999 REPORT #: F:\CUS\Y\YAE\YAE295A9.RPT PAGE #: 1 2.983(d) (9) Tune-up procedure. The tune-up procedure is given in EXHIBIT #8. (10) Description of all circuitry and devices provided for determining and stabilizing frequency is included in the circuit description in the instruction manual. 2.983 (11) Description of any circuits or devices employed for suppression of spurious radiation, for limiting modulation, and for limiting power. In addition to the interstage filtering the multi- section low pass filter made up of L12, L11, C40, C47, C95, C46, C94, C45, & C26. Limiting Modulaton: The transmitter audio limiting circuitry is contained in the loop filter IC01. Limiting Power: There is no provision for limiting power. (12) Digital modulation. This unit does NOT use digital modulation. 2.983(e) The data required by 2.985 through 2.997 is submitted below. 2.985(a) RF power output. 80.215(e)(1) RF power is measured by connecting a 50 ohm, re- sistive wattmeter to the RF output connector. With a nominal battery voltage of 13.6V, and the transmitter properly adjusted the RF output measures: POWER OUTPUT INPUT POWER: (13.6V)(4.5A) = 62.1 Watts OUTPUT POWER: 25.0 Watts Efficiency: 40.3 METHOD OF MEASURING RF POWER OUTPUT /-----------\ /---------\ |Transmitter|---------------------|50 ohm | |under test | |Resistive| \-----------/ |Wattmeter| | \---------/ /-----------\ |Power | |Supply | \-----------/ APPLICANT: YAESU MUSEN CO., LTD. FCC ID: K66GX2350S DATE: JULY 23, 1999 REPORT #: F:\CUS\Y\YAE\YAE295A9.RPT PAGE #: 2 2.987(a) Voice Modulation characteristics: (a) AUDIO FREQUENCY RESPONSE See the EXHIBIT #9. 2.987(a) AUDIO LOW PASS FILTER The audio low pass filter is included and the plot is shown as EXHIBIT #11. Rules 80.213(e) for ship stations with a low pass filter. 2.987(b) Audio input versus modulation A plot of the 80.213(d) audio input versus deviation is shown in in EXHIBIT #10. 2.989(c) Occupied bandwidth: 80.210(b,) Data in the plots shows that on any frequency removed from the assigned frequency by more than 50%, but not more than 100%: At least 25dB. On any frequency removed from the assigned frequency by more than 100%, but not more than 250%: At least 35dB. On any frequency removed from the assigned frequency by more than 250%, of the authorized bandwidth: At least 43+log(P)dB. Radiotelephone transmitter with modulation limiter. Test procedure: TIA/EIA-603 para 2.2.11 , with the exception that various tones were used. Test procedure diagram OCCUPIED BANDWIDTH MEASUREMENT Coupler /-----------\ /---\ /---------\ |Transmitter| | | |50 ohm | |under test |------------| |---------|Resistive| \-----------/ | | |Wattmeter| | \---/ \---------/ /-----------\ /----------\ |A…

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