AAO1901206VHF TRANSCEIVER

TABLE OF CONTENTS LIST APPLICANT: RADIOSHACK, A DIVISION OF TANDY CORP. FCC ID: AAO1901206 TEST REPORT: PAGE 1......COVER SHEET - GENERAL INFORMATION & TECHNICAL DESCR. PAGE 2......TECHNICAL DESCRIPTION CONTD & RF POWER OUTPUT PAGE 3......MODULATION CHARACTERISTICS & OCCUPIED BANDWIDTH PAGE 4......SPURIOUS EMISSIONS AT ANTENNA TERMINALS PAGE 5......METHOD OF MEASURING SPURIOUS EMISSIONS AT ANTENNA TERMINAS AND RADIATED EMISSIONS TEST DATA PAGE 6......METHOD OF MEASURING RADIATED SPURIOUS EMISSIONS PAGE 7......FREQUENCY STABILITY PAGE 8-9....TRANSIENT FREQUENCY STABILITY PAGE 10......CERTIFICATION OF TECHNICAL DATA PAGE 11......LIST OF TEST EQUIPMENT EXHIBITS: EXHIBIT 1........POWER OF ATTORNEY LETTER EXHIBIT 2........FCC ID LABEL SAMPLE EXHIBIT 3........SKETCH OF FCC ID 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-9F....PARTS LIST EXHIBIT 10A-10B..SCHEMATIC EXHIBIT 11A-11K..USER'S MANUAL EXHIBIT 12A-12D..THEORY OF OPERATION EXHIBIT 13A-13B..ALIGNMENT PROCEDURE EXHIBIT 14A-14C..CRYSTAL SPECIFICATION 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 EXHIBIT 19.......OCCUPIED BANDWIDTH 3000 Hz TONE EXHIBIT 20A-20B...TRANSIENT FREQUENCY RESPONSE PLOTS APPLICANT: RADIOSHACK, A DIVISION OF TANDY CORP. FCC ID: AAO1901206 REPORT #: F:\CUS\R\RADSHACK\RAD178A8.RPT PAGE: TABLE OF CONTENTS GENERAL_INFORMATION_REQUIRED FOR_TYPE_ACCEPTANCE 2.983 (a,b,c) RADIOSHACK, A DIVISION OF TANDY CORP. will sell the MODEL NO. AAO1901206 VHF transmitter in quantity, for use under FCC RULES PART 22 & 90. 2.983 (d) TECHNICAL_DESCRIPTION (1) Type of Emission: 10K0F3E For 25KHz 10K0F3E 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: 2.0 Watts & 0.60 Watts, into a 50 ohm resistive load. (5) DC Voltages and Current into Final Amplifier: POWER INPUT High FINAL AMPLIFIER ONLY Vce = 7.20 Volts Ice = 0.72 A. Pin = 5.18 Watts Low FINAL AMPLIFIER ONLY Vce = 7.20 Volts Ice = 0.35 A. Pin = 2.52 Watts (6) Function of each electron tube or semiconductor device or other active circuit device: FCC ID: AAO1901206 REPORT NO.: F:\CUS\R\RADSHACK\RAD178A8.RPT PAGE #: 1 2.983(d) (7) Complete Circuit Diagrams: The circuit diagram is included as EXHIBIT #7. The block diagram is included as EXHIBIT #5. (8) Instruction book. The instruction manual is in cluded as EXHIBIT #8. (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 limit- ing 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 con- tained in the loop filter IC01. Limiting Power: There is no provision for limiting power. (12) Digital modulation. This unit does NOT use digi- tal modulation. 2.983(e) The data required by 2.985 through 2.997 is sub- mitted below. 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 7.2V, and the trans mitter properly adjusted the RF output measures: POWER HIGH INPUT POWER: (7.2V)(0.72A) = 5.18 Watts OUTPUT POWER: 2.0 Watts Efficiency: 38% LOW POWER INPUT POWER: (7.2V)(0.35A) = 2.52 Watts OUTPUT POWER: 0.62Watts Efficiency: 24% /-----------\ /---------\ |Transmitter|---------------------|50 ohm | |under test | |Resistive| \-----------/ |Wattmeter| | \---------/ /-----------\ |Power | |Supply | \-----------/ REPORT NO.: F:\CUS\R\RADSHACK\RAD178A8.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 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 in EXHIBIT #10. 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, whichever is the lesser attenuation. Radiotelephone transmitter with modulation limiter. Test procedure: TIA/EIA-603 para 2.2.11 , with the excepti…

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