CINM-1000WIRELESS MICROPHONE

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 7/28/99 Mr. Joe Dichoso FCC 7435 Oakland Mills Road Columbia, Md. 21045 SUBJECT: CHIAYO ELECTRONICS CO., LTD. FCCID: CINM-1000 REFERENCE: EA94032 MR. DICHOSO, The test procedure used was TIA/EIA-602 Para. 2.2.11. with the following exceptions; 1. Resolution Bandwidth =1000Hz 2. Video Bandwidth =100KHz 3. Modulating frequency of 15,000Hz In the plots originally sent to you I took the “system deviation” to be 30KHz and therefore set the input 16dB above the input required for 15KHz deviation. If I set the input to 30dB above the level to produce 50% modulation I get the plot that have labeled #3. This is the picture that you are looking for I think. If you have any questions please let me know or call toll free at 888.472.2424. BBEST REGARDS, S.S. Sanders G:\CUS\C\CHIAYO\JD90728.doc

TABLE OF CONTENTS LIST APPLICANT: CHIAYO ELECTRONICS CO., LTD. FCC ID: CINM-1000 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......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 AND SKETCH OF LOCATION EXHIBIT 3A........EXTERNAL FRONT & REAR VIEW PHOTOGRAPH EXHIBIT 3B........EXTERNAL TOP VIEW PHOTOGRAPH EXHIBIT 3C........INTERNAL COMPONENT SIDE PHOTOGRAPH EXHIBIT 3D........INTERNAL SOLDER SIDE PHOTOGRAPH EXHIBIT 4.........BLOCK DIAGRAM EXHIBIT 5A-5C.....PARTS LIST EXHIBIT 6.........SCHEMATIC EXHIBIT 7.........TUNING PROCEDURE EXHIBIT 8A-8G.....USER'S MANUAL EXHIBIT 9.........AUDIO FREQUENCY RESPONSE GRAPH EXHIBIT 10........AUDIO INPUT VS DEVIATION GRAPH EXHIBIT 11........OCCUPIED BANDWIDTH PLOT - NO MODULATION EXHIBIT 12........OCCUPIED BANDWIDTH PLOT - 15 kHz TONE EXHIBIT 13........OCCUPIED BANDWIDTH PLOT - 2500 HZ TONE APPLICANT: CHIAYO ELECTRONICS CO., LTD. FCC ID: CINM-1000 REPORT #: F:\CUS\C\CHIAYO\CHI83T9.RPT PAGE: TABLE OF CONTENTS ̋ GENERAL_INFORMATION_REQUIRED ̋ FOR_TYPE_ACCEPTANCE ̋ ̋ 2.983 (a,b,c) CHIAYO ELECTRONICS CO., LTD. will manufacture the CINM-1000 in quantity, for use under FCC RULES PART 74.801, LOW POWER AUXILIARY STATIONS. 2.983 (d) TECHNICAL_DESCRIPTION (1) Type of Emission: 110K0F3E Bn = 2M + 2DK M = 1000 D = 40.0KHz (Peak Deviation) K = 1 Bn = 2(1K) + 2(40.0K)(1) = 2K +80.0K = 82.0KHz M = 15,000 D = 28KHz K = 1 Bn = 2(15K) + 2(28K) = 30 +56 = 86KHz Bn = 2(15) + 2(40) = 30 + 80 = 110KHz 74.861(e)(5) ALLOWED AUTHORIZED BANDWIDTH = 200KHz. (2) Frequency Range: Part 74: 161.625-161.775MHz & 174-216MHz TEST FREQ = 215.20MHz. (3) Power Range and Controls:UNIT has no power controls. (4) Maximum Output Power Rating: 2.0 MilliWatts ERP. (5) DC Voltages and Current into Final Amplifier: FINAL AMPLIFIER ONLY 9.0V BATTERY Vce = 8.9 Volts Ice = 4.0mA. (6) Function of each electron tube or semiconductor device or other active circuit device: See part list Exhibit 5B. APPLICANT: CHIAYO ELECTRONICS CO., LTD. FCC ID: CINM-1000 REPORT #: F:\CUS\C\CHIAYO\CHI83T9.RPT PAGE: 1 2.983(d) (7) Complete Circuit Diagrams: The circuit diagram is ̋ included as EXHIBIT 6. The block diagram ̋ is included as EXHIBIT 4. The part list is included EXHIBIT 5A-5C. 2.983(d) (8) Instruction book. The instruction manual is in- cluded as last item in this report. (9) Tune-up procedure. The tune-up procedure is given in page 7. (10) Description of all circuitry and devices provided for determining and stabilizing frequency. The transmitter frequency is controlled by a crystal, the crystal specifications are included in PAGE . (11) Description of any circuits or devices employed for suppression of spurious radiation, for limit- ing modulation, and for limiting power. There are no devices or circuitry to limit the power, since this is a low power device. The interstage cou- pling between TR1, TR2, TR3, TR4, and TR6 as well as the low pass filter made up of L2, VC1, C26, L3, VC2, C28, L4, L6, VC3, & C29 suppress the harmonics. Limiting Modulation: The transmitter audio circuitry is contained in IC2. The modulation limiting is also provided by IC1B. 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 sub- mitted below. 2.985(a) RF_power_output. ERP was measured by the method described later in this report. The input power to the final stage was measured with a 1.5V supply connected in place of the 1.5V battery. INPUT POWER: FOR 9.0 V OPERATION (8.9V)(0.004A) = 35.6milliWatts OUTPUT POWER: FOR 9.0 V OPERATION 1.0 mWATTS ERP FCC ID: CINM-1000 REPORT #: F:\CUS\C\CHIAYO\CHI83T9.RPT PAGE: 2 R.F. POWER OUTPUT ̋ /-------\ /-----------------\ | | | | TRANSMITTER | | | |HP | UNDER TEST WITH | \--| |SPECTRUM | INTERNAL ANTENNA| | | |ANALYZER \-----------------/ | | | | | \-------/ |?- 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. The center of the Dipole antenna at the center of the platform and the output of the signal generator adjusted to produce the same meter reading as measured for the fundamental in the radiated emissions test. 2.987(a)(b) Modulation_characteristics: AUDIO_FREQUENCY_RESPONSE The audio frequency response was measured in accordance with TIA/EIA Specification 603 S2.2.6.2.1. with the follwoing excep- tions; Constant Deviation Test /---------------\ /----------\ /----------\ | Dummy | | Audio | | RMS | /-| Microphone |--| Generator| /-| VOLTMETER| | | | \----------/ | \----------/ | \---------------/ | |----------------------------------/ | /------------\ /------------\ /---------\ | | | | | | | | Test | | | Transmitter|---/ \----| NEAR FIELD|---| Receiver| \-| under test | | PROBE | | | \------------/ \------------/ \---------/ 1.The test receiver audio bandwidth was <50Hz to >20,000Hz. 2. Apply a 1000Hz tone and adjust the audio generator to produce 10% of the rated system deviation. 3. Measure frequency responce over the frequency range from 100Hz to 20,000Hz. The audio frequency response curve is shown on the next page. AUDIO_LOW_PASS_FILTER The audio low pass filter is not required in this unit. APPLICANT: CHIAYO ELECTRONICS CO., LTD. FCC ID: CINM-1000 REPORT #: F:\CUS\C\CHIAYO\CHI83T9.RPT PAGE: 3 2.989(c) Occupied_bandwidth: Using TIA/EIA 2.2.10 aAccoustic Microphone Sensitivity test procedure to determ…

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