YXXUHF-18UHF Wireless Microphone

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UHF-SRYSTAL UHF-18 MIC-IN AF AMP Compres sor OSC*30 RF AMP ANT CRYSTAL 21.88MHz ANT CRY-OSC 21.88MHz BATT COMP LED AMP MIC COMPRESSION 2ndFD RFAMP 2ndFD3rdFD 2ndFD 2ndFD DC-DC VCC UHF-18 TRANSMITTER

UHF-18

FCC ID: YXXUHF-18 This device complies with Part 74 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

FCCID: YXXUHF-18 Label Location

UHF-18

Wireless microphone circuit description of UHF-18 AUDIO CIRCUIT The audio signal is injected via the microphone sensor into the audio circuit composed of the op. amp IC U2 （4558）, & compandor IC U1 （NE571）. The signal is compressed via the compandor circuit at a 2:1 ratio and is pre-emphasized by U2. The level of the output signal is controlled by the resistors 4.7k, 1k and 10k VR. MODULATOR CIRCUIT The modulator circuit is a direct FM type built around the local oscillator controlled by Crystal XTAL1 (37 times to local ocsillartor), variable capacitance diode IS2638, variable conductor IFT1(15uH), Q4,Q5,Q6(T33), IFT 2~5(31/31/62/29). The modulated output from the oscillator is sent to the RF pre-amp and RF final amplifier which boosts the output to a nominal level (<1mW). RF PRE-AMPLIFIER & FINAL AMPLIFIER The 3-stage amplifier, using two transistors Q7(T33),Q8(R24),Q9(415), culminating with a normal transmitter output of <1mW. The output filter (VC1,VC2,VC3, Cap x3, L x 3 suppress the output harmonics and matches the output to the integrate antenna. POWER STEADY CIRCUIT 2 transistors Q2,Q3(L6 x2) for up-voltage, IC3 (6371) and IC4 (7805) provide voltage to modulation and amplifier respectively. The battery supplies the audio input circuit directly. LANSEN AUDIO EQUIPMENT COMPANY #17, FU’AN DONG ROAD, ENPING, CHINA Telephone: +86-7 50-7928726 Fax No.: +86-750-7928726 FCC ID: YXXUHF-18 Operation Description The EUT is powered by 3V （2 x AA） battery and have one channel between 614-698 MHz FM transmitter， it’s Occupied Bandwidth is 70kHz，it cannot be tuned by the end user。 During manufacturing process, adjusting the coils IFT 1-5 to get requested frequency, and may exchange 3 capacitors paralleled with them from 3-30 pF if any.

123456 A B C D 6 54321 D C B A Title NumberRevisionSize B Date: 14-Aug-2010 Sheet of File: CF2 16 RIN2 15 GIN2 14 VCC 13 -IN2 12 RF2 11 OUT2 10 ADJ 9 ADJ 8 OUT 7 RF1 6 -IN 5 GND 4 GIN 3 RIN 2 CF 1 NE571 3 2 1 8 4 4558 1K 4.7uF 1uH 100100K 22K 30 5.6K22K 102J103J 3 2 1 8 4 4558 30 12K12K 10uF 1uF 1uF 4.7uF 4.7uF 4.7uF 1K 2.2K 4.7uF 4.7uF 200 8.2K 4148 4148 100K 1uF L6 T33T33 L6 L6 R24 T33 4.7K 104 4.7uF 4.7uF 4.7uF 4.7K 102 100 10K 1K 2.2uF 10K TO 571 12 PIN TO 571 8 PIN TO 571 5 PIN 47K 82K 220K 31 62 31 15 1-3P IN 1 G 2 OUT 3 7805L 10K 5.6K 820R 68 20 0.510 10K2010K 33K 103 8 1K 33K103 100 1uH1uH 0.22uH 6 10K20100R15 33K ANT 103 103 103 103 103 103 4T 10NH 0.22uH 2 103 103 103 VOUT 3 EXT 4 21 5 VDDNC VSS 6371 0.01uF 100uH 100uH 2.2uF 113 F1 100uF 104104100uF 220K 103 680K 104 0.01uF 10uF 1uH 103 120K 68K 4.7uF 4148 22K4.7K RED3 103 P UHF-18 TRANSMITTER VCC 1K 1S2638 20 10K 21.88M 10K 4.7uF 4148 7 5 T33 29 1K100 1uH 103 103 5 10K8 33K 103 4 11 6 2T 100470 47R 0.51 1.5 10NH 0.5 415 1K 1T 1T 15NH 3-8P 3-8P 2 2 10NH 0.22uH 103 100470 47R

FCCID: YXXUHF-18 Report Number: HST201009-3656-FCC Page 1 of 19 Test Report Applicant: LANSEN AUDIO EQUIPMENT COMPANY Address of Applicant: #17, FU’AN DONG ROAD, ENPING, CHINA Equipment Under Test (EUT): EUT Name: UHF Wireless Microphone Model No.: UHF-18, WM-80, WM-90, WM-100, WM-130, WM-170, WM-190, UHF-28, WIEM-100 Trade Mark: NA Serial No.: Not supplied by client Standards: FCC PART 74H:2008 Date of Receipt: Oct. 9, 2010 Date of Test: Oct. 14 to 16. 2010 Date of Issue: Oct 29, 2010 Test Result : PASS* z In the configuration tested, the EUT complied with the standards specified above. Authorized Signature: Henly Xie / Manager This report refers to the General Conditions for Inspection and Testing Services, printed overleaf This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in this report. This report may only be reproduced and distributed in full. If the product in this report is used in any configuration other than that detailed in the report, the manufacturer must ensure the new system complies with all relevant standards. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. All test results in this report can be traceable to National or International Standards. The test report prepare by: Guangzhou Huesent Testing Service Co.,Ltd. Self-ordained 68# courtyard, No.91, Dongguanzhuang Road,Guangzhou,China. Tel: 86-20-28263298 Fax: 86-20-28263237 http://www.hst.org.cn E-mail:[email protected] REPORT No: HST201009-3656-CE-E Page 2 of 19 Contents 1 TEST SUMMARY .................................................................................................................3 2 GENERAL INFORMATION .................................................................................................. 4 2.1 Client Information ..........................................................................................................4 2.2 General Description of E.U.T......................................................................................... 4 2.3 Details of E.U.T. ............................................................................................................ 4 2.4 Description of Support Units.......................................................................................... 4 2.5 Standards Applicable for Testing ................................................................................... 4 2.6 Test Location ................................................................................................................. 5 2.7 Deviation from Standards .............................................................................................. 5 2.8 Abnormalities from Standard Conditions ....................................................................... 5 3 EQUIPMENTS USED DURING TEST ................................................................................. 6 4 TEST RESULTS ................................................................................................................... 7 4.1 E.U.T. Operation Condition ........................................................................................... 7 4.2 Test Procedure & Measurement Data ........................................................................... 8 4.2.1 Carrier Radiated Power & Radiated Spurious Emissions ............................... 8 4.2.2 Occupied Bandwidth ..................................................................................... 11 4.2.3 Frequency Stability ....................................................................................... 14 4.2.4 Modulation Characteristics............................................................................ 16 4.3 EUT Constructional Details ......................................................................................... 19 REPORT No: HST201009-3656-CE-E Page 3 of 19 1 Test Summary Test Test RequirementStandard Paragraph Result Carrier Radiated Power FCC Part 2.1046 74.861 e) 1) 54–72, 76–88 & 174–216 MHz bands, 50 mW 470–608 and 614–806 MHz bands, 250 mW PASS Modulation Deviation FCC Part 2.1047 74.861 e) 3) Within 75kHz PASS Frequency Stability FCC Part 2.1055 74.861 e) 4) <0.005% 50 ppm PASS Operating Bandwidth FCC Part 2.1049 c)74.861 e) 5) Within 200kHz PASS Unwanted Radiation FCC Part 2.1049 c)74.861 e) 6) within the mask PASS Radiated Spurious Emission FCC Part 2.1053 74.861 d) 3) < 43+10lgP(W) dB PASS Remark: ♣The EUT has one channel, which is located in the range 614.0MHz to 698.0MHz . Only test result of three samples in 614.2 MHz, 656.3 MHz and 697.8 MHz were recorded in this report. REPORT No: HST201009-3656-CE-E Page 4 of 19 2 General Information 2.1 Client Information Applicant: LANSEN AUDIO EQUIPMENT COMPANY Address of Applicant: #17, FU’AN DONG ROAD, ENPING, CHINA 2.2 General Description of E.U.T. EUT Name: UHF Wireless Microphone Item No.: UHF-18, WM-80, WM-90, WM-100, WM-130, WM-170, WM-190, UHF-28, WIEM-100 Tested UHF-18 only, since the other models are electrical identical to UHF-18 except the model No. and the color of outlook. Serial No.: Not supplied by client 2.3 Details of E.U.T. Power Supply: 3Vdc, 2 x AA size Battery Main Function: Wireless microphone system with an associated receiver for transmitting voice. The final amplifier Collector Voltage and Collector Current are 0.3V & 3.5mA respectively. Necessary Bandwidth: 2M+2DK= 2 x 15kHz + 2 x 20kHz x 1.0 = 70 kHz 2.4 Description of Support Units Connect the EUT to mains power, and then test the EUT with signal generator. 2.5 Standards Applicable for Testing The standard used was FCC PART 74H, 2008 The EUT belongs to licensed low power auxiliary devices. REPORT No: HST201009-3656-CE-E Page …

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