ZTJ-VB2WIRELESS MICROPHONE SYSTEM

PV1 VHF 174-216 174-216MHz. Note This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. This device complies with Part 15 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. The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the user's authority to operate the equipment. The antenna used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operated in conjunction with any other antenna or transmitter

` X1 = 14.856 ~ 17.885MHz

Shenzhen Uniwisdom Technologies Co., Ltd. FCC ID: ZTJ-VB2 POWER OF ATTORNEY August 18, 2011 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, the undersigned, hereby authorize Waltek Services (ShenZhen) Co., Ltd. (Philo Zhong) on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Services (ShenZhen) Co., Ltd. (Philo Zhong) on our behalf shall have the same effect as acts of our own. This authorization expires on August 17, 2012. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, Shenzhen Uniwisdom Technologies Co., Ltd., are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely,

2.1 EUT – Front View 2.2 EUT – Back View

Page:28 of 28 Shenzhen Uniwisdom Technologies Co., Ltd. FCC ID: ZTJ-VB2 WALTEK SERVICES Reference No.: WT11073745-E-E-F 12 FCC Label The Label must not be a stick-on paper. The Label on these products must be permanently affixed to the product and readily visible at the time of purchase and must last the expected lifetime of the equipment not be readily detachable. FCC ID : ZTJ-VB2

FCC ID Label Sample for Model: VB-2 LT; VB-2 GT; PV-1 V1 BL(Transmitter); PV-1V1 BHS(Transmitter); PV-1 V1 BG(Transmitter) FCC ID: ZTJ-VB2

2.1 EUT – Open View 2.2 PCB – Front View 2.3 PCB – Back View

Circuit Description AF part: The signal received by MIC is amplified through IC 1B, and entre into the network which is comprised of C15, R15, C16, R16, in the end, the audio frequency compression is completed by IC1A, IC4. RF part: The audio signal out of IC1A is modulated in VD, the crystal of which is from 14.856MHz to 17.885MHz. The Q5 ~ Q7 completes the frequency doubling and amplifying, then the signal is transmitted to space via antenna.

ANT

TUNE-UP PROCEDURE 1. Tune C46, C50, C53, L10 to maximize the main wave output and syntony wave minimize. 2. The frequency is determined and stabilized by the crystal. Ranged from 178.15MHz ~ 214.50MHz is met and fixed by the crystal X1. As the cartridge doesn’t have high sensitivity so there is no such kind a circuit for suppression of spurious radiation, and limiting modulation. 3. As the output power is usually less than 0 dBm, there is no circuit for limiting power. If it is necessary to lower the power then please get the R39’s value higher.

ANT

Page: 1 of 29 FCC TEST REPORT WALTEK SERVICES Reference No.: WT11073745-E-E-F FCC ID : ZTJ-VB2 Applicant : Shenzhen Uniwisdom Technologies Co., Ltd. Address : Bldg.91-94 3rd Industrial Zone, Lisonglang, Gongming Town, Bao’an District, Shenzhen, P.R.China Equipment Under Test (EUT) : Product Name : Wireless Microphone System Model No. : VB-2 LT; VB-2 GT; PV-1 V1 BL(Transmitter); PV-1V1 BHS(Transmitter); PV-1 V1 BG(Transmitter) Standards : FCC CFR47 Part 74 Section 74.861:2009 Date of Test : August 15 ~ August 17, 2011 Date of Issue : August 18, 2011 Test Engineer : Hunk yan Reviewed By : Philo zhong Test Result : PASS Prepared By: Waltek Services (Shenzhen) Co., Ltd. 1/F, Fukangtai Building, West Baima Rd., Songgang Street, Baoan District, Shenzhen 518105, China Tel :+86-755-27553488 Fax:+86-755-27553868 — The sample detailed above has been tested to the requirements of Council Directives ANSI C63.4:2003. The test results have been reviewed against the Directives above and found to meet their essential requirements. Page:2 of 29 Shenzhen Uniwisdom Technologies Co., Ltd. FCC ID: ZTJ-VB2 WALTEK SERVICES Reference No.: WT11073745-E-E-F 2 Test Summary Test Items Test Requirement Test Method Result RF Output Power 74.861(e)(1)(i) TIA/EIA-603-C-2004 PASS Modulation Characteristics 2.1047(a) TIA/EIA-603-C-2004 PASS Occupied Bandwidth 2.1049(c)(1) TIA/EIA-603-C-2004 PASS Spurious Radiated Emissions 2.1053 & 74.861(e)(6) TIA/EIA-603-C-2004 PASS Frequencies Stability 2.1055(a)(1) TIA/EIA-603-C-2004 PASS Page:3 of 29 Shenzhen Uniwisdom Technologies Co., Ltd. FCC ID: ZTJ-VB2 WALTEK SERVICES Reference No.: WT11073745-E-E-F 3 Contents 1 COVER PAGE....................................................................................................................1 2 TEST SUMMARY .................................................................................................................................................. 2 3 CONTENTS............................................................................................................................................................. 3 4 GENERAL INFORMATION ................................................................................................................................ 5 4.1 CLIENT INFORMATION........................................................................................................................................... 5 4.2 GENERAL DESCRIPTION OF E.U.T. ........................................................................................................................ 5 4.3 DETAILS OF E.U.T................................................................................................................................................. 5 4.4 DESCRIPTION OF SUPPORT UNITS.......................................................................................................................... 5 4.5 STANDARDS APPLICABLE FOR TESTING................................................................................................................ 5 4.6 TEST FACILITY...................................................................................................................................................... 6 4.7 TEST LOCATION.................................................................................................................................................... 6 5 EQUIPMENT USED DURING TEST .................................................................................................................. 7 6 RF OUTPUT POWER............................................................................................................................................ 9 6.1 TEST EQUIPMENT.................................................................................................................................................. 9 6.2 TEST PROCEDURE.................................................................................................................................................. 9 6.3 TEST RESULT......................................................................................................................................................... 9 7 MODULATION CHARACTERISTICS ............................................................................................................ 10 7.1 TEST EQUIPMENT................................................................................................................................................ 10 7.2 TEST PROCEDURE................................................................................................................................................ 10 7.3 TEST RESULT...................................................................................................................................................... 11 8 OCCUPIED BANDWIDTH OF EMISSION ..................................................................................................... 12 8.1 TEST EQUIPMENT................................................................................................................................................ 12 8.2 TEST PROCEDURE................................................................................................................................................ 12 8.3 TEST RESULT...................................................................................................................................................... 12 9 FREQUENCY STABILITY................................................................................................................................. 15 9.1 TEST EQUIPMENT................................................................................................................................................ 15 9.2 TEST CONFIGURATION........................................................................................................................................ 15 9.3 TEST PROCEDURE........…

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

2.1 Photograph – Radiated Emission Setup Below 1GHz Above 1GHz