BZBAAVTMNon-Broadcast TX Worn on Body

" ~ "" Ci;j~l1c AA VT -PRO-C CIRCUIT DESCRIPTION Description of circuits employed for suppression of spurious emissions, limiting modulation and limiting power: In the final amplifier stage L14 ,VC1 ,VC2 ,L5 ,C58 ,C62 ,C64 ,L6 ,L7 and Antenna (usil:1g a Microphone cable) forms a band-pass filter. The band-pass filter suppresses the out of band emission. In the transmitter audio amplifier IC3 forms an operational amplifier which clips and suppresses excess audio input voltage. This limits the voltage applied to the modulator and the deviation of the transmitter. Description of circuit for determining and stabilizing frequency: Designation Type No. Diode, Transistor Q1 2SC4215Y Transistor D2 HVU306 Variable Capacitance Diode X1,X2 Crystal The above components are located in the oscillator circuit of the transmitter. The oscillator circuit is standard pierce type. The frequency stability is maintained by X1 ,X2 at crystal. To compensate temperature drift over the operating range, TH1 ,C 19 and C22 are provided, these thermistor and capacitors and a native temperature coefficient. Thus the temperature drift is minimized. Description of circuit with CTCSS CTCSS Tone frequency are generated by #15 pin of IC5 and then mixed at IC3. There are 48 kinds of CTCSS Tone frequencies which are located between 67.0Hz and 250.3Hz. These CTCSS tone frequency will be set up by SW2.

Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: Table of Contents APPLICANT: AZDEN CORPORATION FCC ID: BZBAAVTM TABLE OF CONTENTS LIST TEST REPORT CONTAINING: PAGE 1........ GENERAL INFORMATION PAGE 2.........DESCRIPTIONS PAGE 3.........RF POWER TEST PROCEDURE & AUDIO FREQUENCY RESPONSE PAGE 4.........AUDIO FREQUENCY RESPONSE GRAPH PAGE 5.........MODULATION LIMITING GRAPH – 300 Hz PAGE 6.........MODULATION LIMITING GRAPH – 1000 Hz PAGE 7.........MODULATION LIMITING GRAPH – 3000 Hz PAGE 8.........OCCUPIED BANDWIDTH PAGE 9.........OCCUPIED BANDWIDTH PLOT PAGE 10........OCCUIPED BANDWIDTH PLOT - CW PAGE 11........RADIATED EMISSIONS TEST DATA PAGE 12........METHOD OF MEASURING RADIATED SPURIOUS EMISSIONS PAGE 13........FREQUENCY STABILITY TEST DATA PAGE 14-17.....EQUIPMENT LIST EXHIBITS CONTAINING: EXHIBIT 1.......FCC ID LABEL SAMPLE & ID LABEL LOCATION EXHIBIT 2.......BLOCK DIAGRAM EXHIBIT 3.......SCHEMATICS EXHIBIT 4.......TUNING PROCEDURE EXHIBIT 5.......CIRCUIT DESCRIPTION EXHIBIT 6.......USER'S MANUAL EXHIBIT 7.......TEST SET UP PHOTOGRAPH EXHIBIT 8.......EXTERNAL FRONT VIEW PHOTOGRAPH EXHIBIT 9.......EXTERNAL REAR VIEW PHOTOGRAPH EXHIBIT 10......EXTERNAL TOP VIEW PHOTOGRAPH EXHIBIT 11......INTERNAL COMPONENT SIDE PHOTOGRAPH EXHIBIT 12......INTERNAL COPPER SIDE PHOTOGRAPH EXHIBIT 13......LIST OF ACTIVE DEVICES Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 1 of 17 GENERAL INFORMATION REQUIRED FOR TYPE ACCEPTANCE 2.1033(c)(1) AZDEN CORPORATION will manufacture the BZBAAVTM in 2.1033(c)(2) quantity, for use under FCC RULES PART 74.801, LOW POWER AUXILIARY STATIONS. AZDEN CORPORATION 1-12-17 KAMI-REJANKU MITAKA, TOKYO, JAPAN 181 2.1033 TECHNICAL DESCRIPTION (c)(3) Instruction book. The instruction manual is in- cluded as Exhibit 6. (c)(4) Type of Emission: 39K0F3E Bn = 2M + 2DK M = 7500 D = 12 kHz(Peak Deviation) K = 1 Bn = 2(7.5k) + 2(12k)(1) = 39k ALLOWED AUTHORIZED BANDWIDTH = 200 kHz. 74.861(e)(5) (c)(5) Frequency Range: Part 74: 169-172 MHz (c)(6) Power Range and Controls: UNIT has no controls. (c)(7) Maximum Output Power Rating: .007 Watts into 50 ohms resistive load. (c)(8) DC Voltages and Current into Final Amplifier: FINAL AMPLIFIER ONLY 9.0V BATTERY Vce = 8.9 Volts Ice = 0.09 A INPUT POWER: (8.9V) (0.09A) = 0.80 WATTS (c)(9) Tune-up procedure. The tune-up procedure is given in EXHIBIT #4. (c)(10) Complete Circuit Diagrams: The circuit diagram is included as EXHIBIT # 3. The block diagram is included as EXHIBIT #2. Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 2 of 17 2.1033(c)11) Photo or Drawing of Label and sketch of location: See EXHIBIT # 1. 2.1033(c)12) Photos of Equipment: See EXHIBIT #'S 8-12.. (c)(13) Description of all circuitry and devices provided for determining and stabilizing frequency. Description of any circuits or devices employed for suppression of spurious radiation, for limit- ing modulation, and for limiting power. This circuitry is described on exhibit 5. Limiting Modulation: Included in schematic. Limiting Power: There is no provision for changing the power. (13) Digital modulation. This unit does not use digital modulation. 2.1033(c)(14) The data required by 2.1046 through 2.1057 is sub- mitted below. 2.1046 RF power output. RF power measured is: OUTPUT POWER: .007 WATTS ERP Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 3 of 17 R.F. POWER OUTPUT TEST PROCEDURE 2.1047(a)(b) Modulation characteristics: AUDIO FREQUENCY RESPONSE The audio frequency response was measured in accordance with TIA/EIA Specification 603. 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: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 4 of 17 Azden Corporation #8 -55 -50 -45 -40 -35 -30 100100010000100000 Frequency dBmV audio response Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 5 of 17 Modulation Limiting Azden Corporation #8 0 2000 4000 6000 8000 10000 12000 -65-55-45-35-25-15 dBmV Deviation 300 Hz Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 6 of 17 Modulation Limiting Azden Corporation # 8 0 2000 4000 6000 8000 10000 12000 14000 16000 -70-60-50-40-30-20-10 dBmV Deviation 1000 Hz Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 7 of 17 Modulation Limiting Azden Corporation # 1 0 2000 4000 6000 8000 10000 12000 14000 16000 -50-40-30 dBmV Deviation 3000 Hz Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 8 of 17 2.1049(c) Occupied Bandwidth: Data in the plots show that all sidebands between 50 & 100% for the authorized bandwidth are attenuated by at least 25dB. From 100 to 250% of the authorize3d band- width they are attenuated by at least 35dB and beyond 250% 43 log(Po) dB. The plot shows the transmitter modulated with 7000 Hz, 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 and occupied bandwidth plots follow. Wireless Microphone transmitter: Test procedure diagram for: OCCUPIED BANDWIDTH MEASUREMENT Transmitter Coupler 50 ohm under test Resistive Load Audio Spectrum Oscillator Analyzer PART 74.861 MAXIMUM EMISSION BANDWIDTH: 200 kHz Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 9 of 17 Occupied BW Plot Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 10 of 17 Occupied BW CW Plot Applicant: Azden Corporation FCC ID: BZBAAVTM Report #: A\Azden\239BUT2\239BUT2TestReport.doc Page #: 11 of 17 2.1051 Sp…

Text truncated - open the document above for the full version.