BZBAAVTLNon-Broadcast Transmitter 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: BZB AAVTL REPORT #: A\AZDEN\239AUT2\239AUT2RPT.doc PAGE #: TABLE OF CONTENTS TABLE OF CONTENTS LIST FOR PART 90 WIRELESS MICROPHONE APPLICANT: AZDEN CORPORATION FCC ID: BZB AAVTL TEST REPORT: PAGE 1......COVER SHEET - GENERAL INFORMATION & TECHNICAL DESCR. PAGE 2......TECHNICAL DESCRIPTION CONTINUED & RF POWER OUTPUT PAGE 3......MOD CHARACTERISTICS & OCCUPIED B/W PAGE 4......OCCUPIED BANDWIDTH CONTINUED PAGE 5......AUDIO FREQUENCY RESPONSE GRAPH PAGE 6......MODULATION LIMITING – 300 Hz PAGE 7......MODULATION LIMITING – 1000 Hz PAGE 8......MODULATION LIMITING – 15000 Hz PAGE 9......OCCUPIED BANDWIDTH CW PLOT PAGE 10......OCCUPIED BANDWIDTH PAGE 11......FIELD STRENGTH OF SPURIOUS EMISSIONS PAGE 12......METHOD OF MEASURING RADIATED SPURIOUS EMISSIONS PAGE 13......FREQUENCY STABILITY PAGE 14-17...LIST OF TEST EQUIPMENT EXHIBITS CONTAINING: EXHIBIT 1.........FCC ID LABEL SAMPLE & LOCATION OF LABEL EXHIBIT 2A........EXTERNAL FRONT VIEW PHOTOGRAPH EXHIBIT 2B........EXTERNAL REAR VIEW PHOTOGRAPH EXHIBIT 2C........EXTERNAL TOP VIEW PHOTOGRAPH EXHIBIT 2D........INTERNAL COMPONENT SIDE PHOTOGRAPH EXHIBIT 2E........INTERNAL COPPER SIDE PHOTOGRAPH EXHIBIT 3A-3B.....BLOCK DIAGRAM EXHIBIT 4A-4B.....SCHEMATIC EXHIBIT 5.........LIST OF ACTIVE DEVICES EXHIBIT 6.........USERS MANUAL EXHIBIT 7.........TUNING PROCEDURE EXHIBIT 8.........CIRCUIT DESCRIPTION EXHIBIT 9.........TEST SETUP PHOTOGRAPH APPLICANT: AZDEN CORPORATION FCC ID: BZB AAVTL REPORT #: A\AZDEN\239AUT2\239AUT2RPT.doc PAGE #: 1 OF 17 GENERAL INFORMATION REQUIRED FOR TYPE ACCEPTANCE 2.1033 AZDEN CORPORATION will sell the (c)(1)(2) FCC ID: BZB AAVTL VHF microphone in quantity, for use under FCC RULES PART 90 Subpart K. 2.1033 (c) TECHNICAL DESCRIPTION 2.1033 (3) User Manual See Exhibit 6 2.1033 (4) Type of Emission: 25K5F3E Bn = 2M + 2DK M = 7.5 kHz D = 5.25 kHz(Peak Deviation) K = 1 Bn = 2(7.5k) + 2(5.25k)(1) = 25.5k ALLOWED AUTHORIZED BANDWIDTH = 54.00 kHz. 90.209(b)(5) 2.1033 (5) Frequency Range: 169.445, 169.505, 170.245, 170.305 171.045, 171.105, 171.845, and 171.905 MHz (6) Power Range and Controls: There are NO user Power controls. (7) Maximum Output Power Allowed: 0.5 Watts, into a 50 ohm resistive load. (8) DC Voltages and Current into Final Amplifier: POWER INPUT FINAL AMPLIFIER ONLY Vce = 8.9 Volts IC = 0.09 A INPUT POWER - (8.9V)(0.09A) = 0.80 watts (9) Tune-up procedure. The tune-up procedure is given in EXHIBIT 7. APPLICANT: AZDEN CORPORATION FCC ID: BZB AAVTL REPORT #: A\AZDEN\239AUT2\239AUT2RPT.doc PAGE #: 2 OF 17 2.1033 (10) Complete Circuit Diagrams: The circuit diagram is included as EXHIBIT 4A-4B. The block diagram is included as EXHIBIT 3A-3B. (11) Function of each electron tube or semiconductor device or other active circuit device: -SEE EXHIBIT 5 (8) Instruction book. The instruction manual is included as EXHIBIT 6A-6N. (10) Description of all circuitry and devices provided for determining and stabilizing frequency is included in the circuit description in EXHIBIT 8. 2.1033(c)(11) A photograph or drawing of the equipment identification label is shown in Exhibit 1. 2.1033(c)(12) Photographs of the equipment of sufficient clarity to reveal equipment construction and layout and label location are shown in Exhibit 2A-2E. 2.1033(c)(13) For equipment employing digital modulation, a detail description of the modulation technique. This UUT uses voice to modulate the transmitter. 2.1033(c)(14) data required for 2.1046 to 2.1057 See below 2.1046(a) RF power output. RF power is measured as ERP as the antenna is permanently attached. The substitution method was used. With a nominal battery voltage of 9.0 VDC, and the transmitter properly adjusted the RF output measures: OUTPUT POWER: .005 Watts APPLICANT: AZDEN CORPORATION FCC ID: BZB AAVTL REPORT #: A\AZDEN\239AUT2\239AUT2RPT.doc PAGE #: 3 OF 17 2.1033 Measurement Procedures for Type Acceptance: Measurement techniques performed in accordance with TIA/EIA STD 603-1992. METHOD OF MEASURING RF POWER OUTPUT 2.1047(a) Voice modulation characteristics: Audio frequency responses are on pages 5. 2.1049 Audio Low Pass Filter This UUT does not have a low pass filter. 2.1049 Occupied bandwidth: 90.210(c,) For transmitters that are not equipped with an audio low pass filter pursuant to 90.211(b), the power of any emission must be attenuated below the unmodulated carrier output power as follows; (1) On any frequency removed from the center of the authorized bandwidth by a displacement frequency(fd in kHz) of more than 5 kHz but not more than10 kHz: At least 83 log(fd/5)dB; (2)ON any frequency removed from the center of the authorized bandwidth by a displacement frequency(fd in kHz) of more than 10 kHz, but not more than 250% of the authorized bandwidth: At least 29 log(fd2/11)dB or 50 dB, whichever is the lesser attenuation; (3) On any frequency removed from the center of the authorized bandwidth by more than 250% of the authorized bandwidth: At least 43+10 log(Po)dB. APPLICANT: AZDEN CORPORATION FCC ID: BZB AAVTL REPORT #: A\AZDEN\239AUT2\239AUT2RPT.doc PAGE #: 4 OF 17 Test procedure: TIA/EIA-603 para 2.2.11 , with the exception that various tones were used. Test setup diagram OCCUPIED BANDWIDTH MEASUREMENT APPLICANT: AZDEN CORPORATION FCC ID: BZB AAVTL REPORT #: A\AZDEN\239AUT2\239AUT2RPT.doc PAGE #: 5 OF 17 AUDIO FREQUENCY RESPONSE PLOT Azden Corporation #1 -60 -55 -50 -45 -40 -35 -30 100100010000100000 Frequency dBmV audio response APPLICANT: AZDEN CORPORATION FCC ID: BZB AAVTL REPORT #: A\AZDEN\239AUT2\239AUT2RPT.doc PAGE #: 6 OF 17 MODULATION LIMITING 300 Hz PLOT Modulation Limiting Azden Corporation #1 0 1000 2000 3000 4000 5000 6000 7000 -80-70-60-50-40-30-20-10 dBmV Deviation 300 Hz APPLICANT: AZDEN CORPORATION FCC ID: BZB AAVTL REPORT #: A\AZDEN\239AUT2\239AUT2RPT.doc PAGE #: 7 OF 17 MODULATION LIMITING 1000 Hz PLOT Modulation Limiting Azden Corporation # 1 0 1000 2000 3000 4000 5000 6000 7000 -80-70-60-50-40-30-20-10 dBmV Deviation 1000 Hz APPLICANT:…

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