H78ATS100VHF Alarm Transmitter

TELEPHONE: (352) 472-5500 (888) 472-2424 FAX: (352) 472-2030 E-MAIL: [email protected] Engineering, Inc.WEBSITE: www.timcoengr.com TIMCO ENGINEERING, INC.
25355 WEST NEWBERRY ROAD
P.O. BOX 370
NEWBERRY, FL 32669 TIMCO ENGINEERING INC. 25355 West Newberry Road PO Box 370 Newberry, Florida 32669 [email protected] 9/30/98 TO: George Tanahill FCC Subject: FCCID :H78ATS100 REFERENCE: CORRESPONDANCE ID: 3446 1. ATTACHED YOU WILL FIND A CORRECTED OCCUPIED WITH 100Hz RESOLUTION. 2. 90.217 ATTACHED IS LABELED PLOT. I thought that the Toff was not required for Transmitters under 6.0Watts. Has this requirement changed? 3. IN the the original application the maximum deviation was set in a manner that would allow greater than 2.5KHz deviation at 1.0KHz and I did not understand that the deviation on any frequency could not exceed 2.5KHz. So in the NEW modulation limiting plots I set the maximum deviation to be 2.5KHz and remeasured the modulation limiting. BEST REGARDS, Sid Sanders [email protected]

TABLE OF CONTENTS LIST APPLICANT: KP ELECTRONICS INC. FCC ID: H78ATS100 TEST REPORT CONTENTS: PAGE 1......COVER SHEET - GENERAL INFORMATION & TECHNICAL DESCR. PAGE 2......TECHNICAL DESCRIPTION CONTINUED PAGE 3......RF POWER OUTPUT PAGE 4......MODULATION CHARACTERISTICS PAGE 5......OCCUPIED BANDWIDTH PAGE 6......SPURIOUS EMISSIONS AT ANTENNA TERMINALS PAGE 7......FIELD STRENGTH OF SPURIOUS EMISSIONS PAGE 8......METHOD OF MEASURING RADIATED SPURIOUS EMISSIONS PAGE 9......FREQUENCY STABILITY PAGE 10-11...TRANSIENT FREQUENCY STABILITY PAGE 12......CERTIFICATION OF TECHNICAL DATA PAGE 13......LIST OF TEST EQUIPMENT EXHIBITS CONTENTS: EXHIBIT 1.........POWER OF ATTORNEY LETTER EXHIBIT 2.........FCC ID LABEL SAMPLE EXHIBIT 3.........SKETCH OF FCC ID LABEL LOCATION EXHIBIT 4.........FRONT VIEW EXTERNAL PHOTOGRAPH EXHIBIT 5.........REAR VIEW EXTERNAL PHOTOGRAPH EXHIBIT 6.........COMPONENT SIDE INTERNAL PHOTOGRAPH EXHIBIT 7.........COPPER SIDE INTERNAL PHOTOGRAPH EXHIBIT 8.........BLOCK DIAGRAM EXHIBIT 9A-9D.....PARTS LIST EXHIBIT 10A.......SCHEMATIC - SYNTHESIZER EXHIBIT 10B.......SCHEMATIC - RF TRANSMITTER EXHIBIT 10C.......SCHEMATIC - ENCODER EXHIBIT 10D.......SCHEMATIC - POWER SUPPLY EXHIBIT 11A-11E...USER'S MANUAL EXHIBIT 12........AUDIO FREQUENCY RESPONSE GRAPH EXHIBIT 13........AUDIO INPUT VS DEVIATION GRAPH EXHIBIT 14........AUDIO LOW PASS FILTER GRAPH EXHIBIT 15........OCCUPIED BANDWIDTH CW PLOT EXHIBIT 16........OCCUPIED BANDWIDTH PLOT EXHIBIT 17A-17B...TRANSIENT FREQUENCY RESPONSE PLOTS APPLICANT: KP ELECTRONICS INC. FCC ID: H78ATS100 REPORT #: F:\CUS\K\KP\KP07U8.RPT PAGE: TABLE OF CONTENTS GENERAL_INFORMATION_REQUIRED FOR_TYPE_ACCEPTANCE 2.983 (a,b,c) KP ELECTRONICS INC. will sell the MODEL NO. H78ATS100 VHF transmitter in quantity, for use under FCC RULES PART 22 & 90. 2.983 (d) TECHNICAL_DESCRIPTION (1) Type of Emission: 10K0F3E & 10K0F2D For 25KHz 10K0F3E & 10K0F2D For 12.5KHz For 25KHz Bn = 2M + 2DK M = 3000 D = 2.0KHz (Peak Deviation) K = 1 Bn = 2(3.0K) + 2(2.0K)(1) = 6.0K + 4.0K = 10.0K ALLOWED AUTHORIZED BANDWIDTH = 20.00KHz. For 12.5KHz Bn = 2M + 2DK M = 3000 D = 2.0KHz (Peak Deviation) K = 1 Bn = 2(3.0K) + 2(2.0K)(1) = 6.0K + 4.0K = 10.0K ALLOWED AUTHORIZED BANDWIDTH = 11.25KHz. 90.209(b)(5) (2) Frequency Range: 148-174 MHz (3) Power Range and Controls:There are NO user Power controls. (4) Maximum Output Power Rating: 2.0Watts, into a 50 ohm resistive load. (5) DC Voltages and Current into Final Amplifier: POWER INPUT FINAL AMPLIFIER ONLY Vce = 13.2 Volts Ice = 0.51 A. Pin = 6.70 Watts (6) Function of each electron tube or semiconductor device or other active circuit device: APPLICANT: KP ELECTRONICS INC. FCC ID: H78ATS100 REPORT NO.: F:\CUS\K\KP\KP07U8.RPT PAGE #: 1 2.983(d) (7) Complete Circuit Diagrams: The circuit diagram is included as PAGE Exhibit 10A-10D. The block diagram is included as PAGE Exhibit 8. (8) Instruction book. The instruction manual is in cluded as PAGES Exhibit 11A-11D. (9) Tune-up procedure. The tune-up procedure is given in PAGE P/O User Manuel. (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 limit- ing modulation, and for limiting power. In addition to the interstage filtering the multi- section low pass filter made up of L13, L14,L15, L16, C96, C89, C97, C90, & C94. Limiting Modulaton: The transmitter audio limiting circuitry is con- tained in the loop filter U6. Limiting Power: There is no provision for limiting power. (12) Digital modulation. This unit does NOT use digi- tal modulation, it uses 900 & 1500Hz in the AFSK transmission of data in addition to the voice. 2.983(e) The data required by 2.985 through 2.997 is sub APPLICANT: KP ELECTRONICS INC. FCC ID: H78ATS100 REPORT NO.: F:\CUS\K\KP\KP07U8.RPT PAGE #: 2 2.985(a) RF_power_output. 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 trans mitter properly adjusted the RF output measures: POWER HIGH INPUT POWER: (13.2V)(0.51A) = 6.73 Watts OUTPUT POWER: 2.0 Watts Efficiency: 29% /-----------\ /---------\ |Transmitter|---------------------|50 ohm | |under test | |Resistive| \-----------/ |Wattmeter| | \---------/ /-----------\ |Power | |Supply | \-----------/ APPLICANT: KP ELECTRONICS INC. FCC ID: H78ATS100 REPORT NO.: F:\CUS\K\KP\KP07U8.RPT PAGE #: 3 2.987(a) Voice Modulation_characteristics: AUDIO_FREQUENCY_RESPONSE (a) See Exhibit 12. 2.987(a) AUDIO_LOW_PASS_FILTER The audio low pass filter is included and the plot is Exhibit 14. Rules 90.210(b,d, & e) for mobile stations with a low pass filter. 2.987(b) Audio_input_versus_modulation A plot of the audio input versus deviation is shown in Exhibit 13. APPLICANT: KP ELECTRONICS INC. FCC ID: H78ATS100 REPORT NO.: F:\CUS\K\KP\KP07U8.RPT PAGE #: 4 2.989(c) Occupied_bandwidth: 90.210(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. 90.210( d) 12.5KHz channel bandwidth equipment. For transmit- ters de signed to operate with a 12.5KHz channel bandwidth, any emission must be attenuated below the power (P) of the highest emission contained within the authorized bandwidth as follows; (1) On any frequency from the center of the authorized bandwidth f0 to 5.625kHz removed from fP0: Zero dB. (2) On any frequency removed from the center of the authorized bandwidth by a displacement frequency(fd-2.88kHz)dB. (3) On any frequency removed from the center of the authorized bandwidth by a displacement frequency(fd in kHz Log(P) or 70dB, w…

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