BEK9E3UH4Wireless Microphone

APPENDIX C - EUT EXTERNAL PHOTOGRAPHS Chassis - Front View

APPENDIX A - FCC ID LABELING AND LOCATION Proposed FCC ID Labeling Proposed FCC ID Location Front Side of EUT/Proposed FCC ID Location FCC ID: BEK9E3UH4

APPENDIX C - EUT INTERNAL PHOTOGRAPHS Main Board - Component View Main Board - Solder View

Circuit introduce TX part: 1. Audio frequency amplify and compress parts MIC change tone signal through IC3B amplify, enter C7,R5,C10,R7 network, and deal with The signal by the control plus amplifier. So the audio frequency compress finish. Other way the plus of IC3A is controlled. 2. Modulate and RF parts: The audio signal out of IC3A modulate In D1,Y1 decides the frequency of carrier wave. Q5 Finish oscillate and triple frequency. Q3,Q4 and Q2 finish double frequency. Q1 is power amplifier. RX part: 1. RF and IF parts: Antenna A or B through the RF switch diode D18 or D19 combine to LPF network, Q10 amplify, through C65,L8,L4,C66,C67 combine to LPF networking, sent to Q8, IF mining 71.4MHz.then send to Q17 and mix 60.7MHz signal through Y3,Q15,output 10.7MHz. Q9,F2,F3 combine to middle amplify. After choose-frequency,enter frequency amplify IC8, Output audio signal audio and field strength RSSI 2. Base oscillator (1) Y2,L3,C26,C104,C106,L21,Q12 combine to capacitive oscillator, Transmit the frequency of the receive part want. L20,C99,C98,L19,C93,VC2,L14,C94,C100,C101,C105,C96,VC1,C72 combine to Line pass network about triple or fourfold frequency, sent to Q8. (2) Q15,Y3 generate 60.7MHz signal and output to Q17. 3. Channel contro part: Field strength signal, Audio sent to IC6B and BS sent to IC6A after amplify, sent to the compare IC5C, the result control IC7B, IC7D IC7C combine to switch group. Finish the choose frequency. Better signal from’A Audio in’ and ‘B audio in’.Send audio to IC3. 4. Quiescence noise part: IC8A,IC8B combine to noise amplify circuit, sent to compare ‘IC5A’ , another mixing field signal AS and BS, sent to ‘ IC5D’. the results of the compares sent compares’ IC5B’, the result control ‘IC7A’ to finish quiescence noise control. 5. Audio process part: IC4A is 20dB amplifier, ‘IC4B’ is control plus amplifier and finish audio expanding with ic1,C13,R10,C9,R11 dis-add network, IC2B is inversion.

TUNE-UP PROCEDURE 1. TRANSMITTING. 1.1 FREQUENCY ADJUSTMENT a) Connect the frequency counter to the pot F1. b) Replace the crystal Y1 for the operating frequency. c) Adjust L9. d) Specification: Tx Frequency +/- 0.005% 1.2 TX POWER CHECK. a) Connect the RF power meter to the pot F1.(RF impedance 50 ohm). b) Switch on the transmitter. c) Check the Tx power. d) Specification: 12dBm +/- 1dBm 1.3 MAX. DEVIATION ADJUSTMENT. a) Connect the deviation meter to the pot F1. b) Apply the audio signal 400Hz,30mV to the MIC point. c) Adjust VR1. d) Specification: 20KHz, Dev. +/-2KHz. 1.4 Generate the 32.768KHz signal through the Q2,Q1,Y2 and output to Audio. 2. RECEIVING 2.1 RX FREQUENCY CHECK. a) Connect the spectrum analyzer to C92. b) Adjust T5,T6. c) Check the level,and make it to maximum. 2.2 SENSITIVITY CHECK. a) Connect sinnader meter to the R91. b) Connect DC voltmeter to R96. c) Reduce the RF output level of signal generator below –105dBm. d) Adjust L9,C51,L8,L4,C66 make the DC level To maximum, and get 12dB of the Sinnader.

12345678 A B C D E F G H 87654321 H G F E D C B A Title NumberRevisionSize B Date:13-Dec-2004Sheet of File:C:\WUTEMP\SCHFIL~1\CPROTEL\KST-ULT.SCHDrawn By: R9 10K R12 4K7 R24 15K R4 100K C3 10u 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 IC1NE571 C12 10u C13 10u C10 10u C2 10u C11 10u C34 1u R5 1K R19 33K R20 22K R21 22K C35 201 C22 101 C30 104 C16 10u 3 2 1 8 4 IC3A LM4558 D1 LED VR3 10K 1234 5678 SW1 SW 2*3 BT1 BATTERY 9V C15 10u UB-4 (KST-ULT) C23 101 R7 10K C5 10u C33 102 C21 101 C26 103 C8 10u C6 10u R18 33K R2 47K R15 100K R3 47K R11 4K7 R14 1M R8 10K 5 6 7 IC3B LM4558 C9 10u R10 2.2K R1 5.6K C25 104 C20 101 VR1 10K R3 100K R13 1KR14 1K R18 22K R16 100K R4 33K R17 100K R15 150K R12 510 R19 6.8K C16 22* C22 3* C8 101 C1 68P VC2 3-10 C11 8* C21 22P C32 0.5 VC1 3-10 C35 56P C18 103 C10 101 C37 47P C34 33P C40 10u T1 * T2 31 L4 22N Q3 2SC2734Q4 2SC2757 Q5 2SC2757Y1 * D1 MA840 L2 8.2u T4 30 C3 101 C13 102 L6 22N T3 31 T5 30 C15 102 C9 101 C19 103 C271P C36 33* C28 1 C39 104 C4 101C12 102 C33 12* C17 103 C2 68 C7 101 R9 510 R8 330 R10 1K R5 47 R1 33K C24 12P Q1 2SC2734 L1 68N C23 0.5* L5 22N C31 2P C30 3P R6 330 F1 F-2 C38 104 R2 33K R11 510 C6 101 C29 10* C25 12P C26 1P L3 * Q2 2SC2734 C14 102 C5 101 R7 330 E1 ANTENNA 1234 5678 SW1SW 2*3 J? PHONEJACK L4 22N L4 22N S? SW-SPDT C5 10u R1 56K R1 5.6K R1 5.6K C48 10u/25V C30 101 C23 8P R13 220K R23 3K3 R15 220K R16 330 Q4 9013 Y2 32.768 Q3 9013 R12 47 R22 47 R14 10K C24 104 C31 103 R24 2K2 C33 102 Vin 3 GND 2 Vout 1 IC5 78L05 D? 4001 G GHL H/L 12345678 A B C D E F G H 87654321 H G F E D C B A Title NumberRevisionSize B Date:13-Dec-2004Sheet of File:C:\WUTEMP\SCHFIL~1\CPROTEL\NADY-UHF.SCHDrawn By: R23 10K R20 6K8 R9 1K R13 100K C11 10u/25V 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 IC1NE571 C14 10u/25V C15 10u/25V C4 10u/25V C12 10u/25V C9 47u/16V C16 1u/50V R12 1K R11 33K R8 22K R6 10K C8 101 C13 104 C18 10u/25V 3 2 1 8 4 IC3A LM4558 D1 LED VR1 10K 1234 5678 SW1 SW 2*3 BT1 BATTERY 9V C2 10u/25V UH-4 (NADY-UHT) C21 222 C17 10u/25V C7 102 C3 101 C10 103 C6 10u/25V R7 33K R3 100K R4 100K R5 10K 5 6 7 IC3B LM4558 C5 10u/25V R2 2K2 C26 104 VR2 10K L1 1uH L2 1uH C1 10u R22 82K R19 100 R1 C24 101 C23 8P R17 220K R10 3K3 R15 220K R14 330 Q1 9013 Y2 32.768 Q2 9013 R12 R18 47 R16 10K C19 104 C25 103 R24 2K2 C20 102 Vin 3 GND 2 Vout 1 IC5 78L05 D2 4001 L4 1uH L4 1uH C22 10u/25V X1 BAT- X2 GND P1 VCC 9V P2 AUDIO P3 VCC 5V X3 BAT+ MK1 MIC 12345678910 A B C D E F G H I J 10987654321 J I H G F E D C B ATitle NumberRevisionSize B Date:13-Dec-2004Sheet of File:C:\WUTEMP\SCHFIL~1\CPROTEL\UHF-4.SCHDrawn By: Q4 9013 Q2 9013 R18 56K R23 2K2 R28 10K R29 1K R14 10K C29 1u/50V C3310u/25V C32 10u/25V C12 10u/25V R25 22K VR2 A10K D17 LED J2 PHONEJACK 6.3 3 2 1 8 4 IC2A 4558 12345678 910111213141516 IC1 NE571 R30 100K R4 33K R1 1K R19 22K R11 10K R10 33K R27 100K R31 2K2 C13 103 C28 33P C8 104 C9 102 C25 10u/25V C18 10u/25V C2 1u/50V C30 10u/25V VR6 100K VR5 10K 5 6 7 IC3B 4558 C1 10u/25V C23 10u/25V C24 10u/25V R56 1K R15 7K5 C58 104 C55 10u/25V C14 10u/25V VR3 20K R53 1K C61 2200u/25V C59 10u/25v C54 10u/25V R17 5K1 R58 100 R11 7K5 R55 22K C63 104 C57104 J1 XLR Q7 9015 S1 SW-SPST D9 4001 Vin 1 GND 2 Vout 3 IC7 7809 P1 RCA R47 100K C21 10u/25V C23 104 R21 10K R20 10K R24 7K5 R16 100K R5 22K R15 100K C16 101 C17 101 C22 10u/25V C4 10u/50V C20 10u/50V3 2 1 8 4 IC4A 4558 R3 2K2 R13 330 R6 100K C5 101 C3 10u/50V Q1 9013 D8 5.1V D7 4148 D1 4148 D5 4148 R57 10K C60 102 C27 104 R50 150K C52 104 R45 100K D5 4148 D3 4148 5 6 7 IC2B 4558 3 2 1 8 4 IC3A LM393 C62 102 R54 5K1 VR7 10K R29 10K D16 LED L3 8.2uH C50 104 C49 104 R7 33K VR4 10K D 5 Q 1 CLK 3 Q 2 R 4 S 6 IC6A CD4013BP C35 10u/25V C10 10u/50V C15 101 R9 10K R8 10K C48 18P R38 100K C41 33P R60 8.2K C39 102 R49 100K D 9 Q 13 CLK 11 Q 12 R 10 S 8 IC6B CD4013BP R51 10K 5 4 2 3 12 IC5A LM339 7 6 1 IC5B LM339 9 8 14 IC5C LM339 C18 10u/25V C19 10u/16V R35 1K R34 1M R31 10K Q3 9014 D3 4148 R47 0 D4 4148 11 10 13 IC2D LM339 9 8 14 IC2C LM339 7 6 1 IC2B LM339 R5 150K R18 10K R1 47 C2 104 D11 LED D12 LED D13 LED D10 LED Q1 9015 D1 4148 D2 4148 R2 4K7 5 4 2 3 12 IC2A LM339 D14 LED R32 75K R37 75K R8 1K R6 75K R7150K R54 100K D15 LED R9 22K R3 33K 5 6 7 IC3B LM393 C4 104 C3 1u/50V R20 10K C1 22u/16V C7 101 R68 1K VR1 10K 11 10 13 IC5D LM339 R70 1K UHF-4 Q6 9015 R33 4K7 R37 0 R28 240K R43 4K7 R32 150K R36 100K R44 10K C53 104R48 22K R52 22K 5 6 7 IC3B 4558 3 2 1 8 4 IC4A 4558 C56 100u/16V Y1 32.768 C21 10u R22 5K1 C26 10u/50V Q5 9013 R26 5K1 C6 10u/50V Q6 9014 RSSI ANSW VCC9V VCC12V AF AF VCC12V VCC9V AUDIO RFVCC D6 4148 D4 4148 C46 104 C42 104 C35 33P L1 8.2N L2 8.2N C36 3300P C38 3300P S1 SW-SPST C43 102 C44 102 R41R40 C48 33P R60 1K C31 10u/25V C45 101 C47 101 R12 8K2 D18 BAR64-3 D19 BAR64-3 R39 1K R42 1K5 Q8 2SC2734 Q9 2SC2757Q10 2SC2734 F1 F-2 L4 8.2N L5 68n L6 220n L7 220n L8 8.2n L9 15n L10 68n C51 8P C64 101 C65 5P C66 *C67 3P C68 102 C69 101 C70 103 C71 101 C72 3P R46 22K R59 220 R61 220 C73 68P C74 47P C75 1P C76 102 C77103 C78 102 C79 22P C80 103L17 8.2uH F2 10.7MHz Q17 BF998 R62 330 R63 680 R64 1K R66 1.5K R67 82K R69 100R71 2.2K R72 220K R73 100 Q11 9013 L11 68n L12 68n C81 101 C82 102 C83 101 C84 101 C85 101 R74 1K A ANTENNA F3 10.7MHz R76 47 C87 102 C88 101 C89 102 C90101 C91 102C11 10u/16V L13 68n R77 10K R78 10K R79 1K R80 22K R81 68K R82 47K R83 220 R84 510 R85 68K R86 2.2K R87 510 C92 6P C93 18P C94 1P C95 102 C96 * C97102 C98 18P C99 5P C100 1P C101 1P C102 101 C103 10P C104 33P C105 1P C106 68P C107 102 C108 10P C109 10P C110 102 VC1 1-3P VC2 3-10P L14 8.2N L15 8.2N L18 8.2uH L19 56N L20 56N L21 220N Q12 2SC2757 Q13 2SC2734 Q14 2SC2734 Y2 * R88 510 R89 15K C111 24P C112 22P C113 47P C114 102 C115 102 C116 102 L22 8.2uH L23 220N Q15 2SC2734 Y3 * R90 47K R91 330 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 IC8 1018 R92 3K3 R93 330 R94 56K R95 56K C117 223 C118 103 C119 223 C120 223 C34 10u T1 T-1718 C121 103 R96 1K C37 10u C122 103 C123 101C124 8K2 C125 102 C126 101 D20 5.6V C40 10u/16V Q16 9015 B ANTENNA ANSW RFVCC AUDIO RSSI L16…

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Note: This test report is specially limited to the above client company and the product model only. It may not be duplicated without prior written consent of Bay Area Compliance Laboratory Corporation. This report must not be used by the client to claim product endorsement by NVLAP or any agency of the U.S. Government. FCC PART 74 EMI MEASUREMENT AND TEST REPORT For Nady Systems, Inc. 6701 Shellmond Street Emeryville, CA 94608 USA FCC ID: BEK9E3UH4 This Report Concerns: Original Report Equipment Type: Transmitter, Wireless Handheld Microphone Test Engineer: Snell Leong / Report No.: R0412035 Report Date: 2004-12-29 Reviewed By: Benjamin Jin / Prepared By: Bay Area Compliance Laboratory Corporation 230 Commercial Street Sunnyvale, CA 94085 Tel: (408) 732-9162 Fax: (408) 732 9164 Nady Systems, Inc. FCC ID: BEK9E3UH4 Report # R0412035Rpt-a.DOC FCC Part 74 Test Report Page 2 of 22 TABLE OF CONTENTS GENERAL INFORMATION.......................................................................................................................................3 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ....................................................................................3 OBJECTIVE...................................................................................................................................................................3 RELATED SUBMITTAL(S)/GRANT(S).............................................................................................................................3 TEST METHODOLOGY..................................................................................................................................................3 TEST FACILITY.............................................................................................................................................................3 SYSTEM TEST CONFIGURATION ..........................................................................................................................4 JUSTIFICATION.............................................................................................................................................................4 BLOCK DIAGRAM.........................................................................................................................................................4 EQUIPMENT MODIFICATIONS.......................................................................................................................................4 CONFIGURATION OF TEST SYSTEM..............................................................................................................................5 TEST SETUP BLOCK DIAGRAM.....................................................................................................................................5 SUMMARY OF TEST RESULTS FOR FCC PART 15............................................................................................6 §74.861(E)(1)(II) – OUTPUT POWER MEASUREMENT .......................................................................................7 STANDARD APPLICABLE..............................................................................................................................................7 TEST PROCEDURE........................................................................................................................................................7 TEST EQUIPMENT.........................................................................................................................................................7 ENVIRONMENTAL CONDITIONS....................................................................................................................................7 TEST RESULTS.............................................................................................................................................................7 §74.861(E)(3) – MODULATION CHARACTERISTICS ........................................................................................10 STANDARD APPLICABLE............................................................................................................................................10 TEST PROCEDURE......................................................................................................................................................10 TEST EQUIPMENT.......................................................................................................................................................11 ENVIRONMENTAL CONDITIONS..................................................................................................................................11 TEST RESULTS...........................................................................................................................................................11 §74.861(E)(5) - OCCUPIED BANDWIDTH OF EMISSION ..................................................................................13 STANDARD APPLICABLE............................................................................................................................................13 TEST PROCEDURE......................................................................................................................................................13 TEST EQUIPMENT.......................................................................................................................................................13 ENVIRONMENTAL CONDITIONS..................................................................................................................................13 TEST RESULTS...........................................................................................................................................................13 EMISSION DESIGNATOR...........................................................................................................................................…

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