XU4TLK-TX72LA72Mhz Wireless Transmitter

AUDIO RESOURCE GROUP LARGE AREA TLK‐TX72LA WIRELESS TRANSMITTER Important Safety Instructions Read all instructions in this guide before installing and using the equipment. Use the supplied 9Volt DC power supply with the equipment. Plug the power supply into an appropriate, grounded power outlet. Route power cables so that they are not walked on or pinched by items placed upon or against them. Ensure that the equipment has adequate ventilation. Do not place anything on top of or over the equipment. Do not use on a cushioned surface that could block the ventilation openings. Keep the equipment away from water and moisture. Avoid dropping anything on the equipment. Locate the equipment away from sources of heat, such as radiators, heat registers, and stoves. Avoid temperature extremes. Do not attempt to service the unit yourself except to follow the instructions found in this guide. Contact your dealer or ARG directly for any technical problems. Installation Requirements . To ensure the best range and audio quality, select a location without any major internal obstructions, such as metal support posts, between the transmitter’s antenna and receivers installed on the exercise equipment. The antenna and receivers should also be installed within the range and in direct line of sight. . We recommend to install the transmitter in a rack with other audio components to minimize cabling. Make sure the equipment has adequate ventilation to avoid overheating. FCC Compliance Statement This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: a. this device may not cause harmful interference; b. this device must accept any interference received, including interference that may cause undesired operation. The Talk&Listen TLK‐TX72LA transmitter has been tested and found to comply with the limits pursuant to Part 15 C of CFR47, FCC Rules. These limits are designed to provide reasonable protection against harmful interference when operated in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the manual instructions, may cause harmful interference to radio communications. Introduction Thanks for purchasing the Talk&Listen TLK‐TX72LA wireless transmitter. This system is very reliable and easy to use. It is supported by a professional technical team who will ensure that, in the unlikely event that you strike any problems, you will be satisfied. There is an AUDIO INPUT and Unbalanced Input on this transmitter. User can switch among the MIC input, Bal. Line‐in and Unbal. 70V input according to the connected input source. Adjust the frequency response (20‐20KHz, 175‐20KHz and 725‐20KHz) using the Hi‐pass filter. Transmitter output is adjustable among ‐6dB, ‐3dB, Max. This equipment is easy to operate, allowing the user to record the file into the MP3 USB. The recording sampling rate is selective which meets the pro audio market demands. Large TFT display is attractive and buttons are user‐friendly. Technical Specifications 72MHz Wireless Transmitter Frequency 72.1MHz – 75.9MHz Output Power ‐16dBm / ‐6dBm / ‐3dBm Frequency space 100kHz Channel TBD Audio Sampling Analog Current Draw DC9V 140mAh (TX) / 350mAh (whole) Audio Frequency Response 50Hz – 15KHz Concurrent Systems 8 Transmittion Method FM Audio Input / Output Bal. Line Input / Mic. Input / 70V Unbal. Input, Headphone Output Charge Power 9V power adapter Configurations 1. Lock Button 2. Set Button 3. Mode Button (used to change the recording sampling rate) 4. “ ” Recording Button (used to activate the recording) 5. “ ” Volume UP Button 6. “ “ Volume DOWN Button 7. “ “ Play / Stop Button (used to play or stop the file the MP3 USB is playing) 8. “ “ Back Button (used to review the last file in the MP3 USB) 9. “ “ Next Button (used to play the next file in the MP3 USB) 10. TFT Display 11. USB port (used to insert the MP3 USBs) 12. Headphone Output (used for monitoring audio quality, providing a processed signal for recording, or for other uses.) 13. ON/OFF Switch 14. Coaxial ANT‐A Connector (front antenna) 15. Audio Input, 3‐PIN Female XLR ¼” jack (accepts Bal. Line input, Mic. Input) 16. Audio Select Switch (used to choose the audio input source, i.e, Mic.input, Line input or 70V input) 17. HI‐Pass Filter (used to adjust the frequency response, i.e, 20Hz‐20KHz, 175‐20KHz and 725‐ 20KHz) 18. Transmitter Output Selection Switch (used to adjust the Output Power, i.e, ‐3dB, ‐6dB, Max.) 19. Antenna selection switch (used to choose the front or rear antenna) 20. Coaxial ANT‐B Connector (rear antenna) 21. DC/9V Power Input Jack Programming Procedures Channel setting Unlock by pressing the “Lock” button for two seconds till the key icon disappears on the display. Use the “ ” and “” buttons to change the channels. The frequency spacing is 100k. Time setting (Format: HH/MM/SS MM/DD/YY) Unlock the unit, press “Set” once, the cursor will stay on the Hour, use the “ ” and “” buttons to change the Hour; Press “Set” again, the cursor will move to Minute automatically, use the “ ” and “ ” buttons to change the Hour; and so on. Till you finish the setting of the Year, the unit will save the setting automatically. Transmitter volume setting (00‐79) Use the “ ” and “” buttons to adjust the transmitter volume level under lock status. (Note: If a USB driver is inserted, press “Mode” before you can adjust it.) MP3 Volume setting (00 – 79) Use the “ ” and “” buttons to adjust the MP3 volume level while playing a MP3. Recorder Volume setting (00 ‐ 79) Use the “ ” and “” buttons to adjust the recorder volume while recording. Activate MP3 USB Insert a USB driver, till you see “USB Store OK” on the display which means that the unit has successfully read the data in the USB. The display will show the total readable files on the USB. Press “” to start playing a song or stop a song, use “” and “” to select the file you want to play. Activate the…

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Audio Resource Group, Inc Date: August 19, 2010 To: Federal Communications Commission 7435 Oakland Mills Road Columbia,MD FCC ID:XU4TLK-TX72LA To Whom It May Concern: This letter is to ascertain that Audio Resource Group, Inc. Product 72Mhz Wireless Transmitter has been the units used for conducting FCC compliance testing, the DoC Part will be tested by FCC recognized test lab. If you have any question or concerns, pls, contact us. Sincerely, Signature Name: Rick Allerdings/ CEO Title: ceo Telephone: 701-769-2700 Email: [email protected] Date: August 19, 2010

1 2 34 ABCD 4 3 2 1 D CBA Title Number Revision Size A4 Date: 9-Aug-2010 Sheet of File: D:\pcb\72MHz\Backup of usa_tx_fcc.DDB Drawn By: LINE INPUTMICROPHONE MICROPHONE MP3 RECODER AUDIO FREQUENCY AMPLIFIER MCU MODUL SELECTOR Analog Signal Processing SELECTOR LCD DEVER DC INPUT LDO TRANSMITTER RF AMPLIFIER 72.1~75.9MHz VOLUME ADJ ANTENNA 70V HIGHT IN USB X1: 8MHz X2: 12MHz X3: 24MHz X4: 13MHz

Audio Resource Group, Inc ______________________________________________________ SCS-F18: Project and Product Certification Representative Authorization Letter Page 1 of 2 Rev 2.0 2206 Ringwood Avenue San Jose, CA 95131 Tel: 408-526-1188 Fax: 408-526-1088 Email: [email protected] Project and Product Certification Representative Authorization Letter Revision History Reason for Amendment (current / obsolete) From To Approved Date Initial Release (current) 1.0 1.0 Nov-14-2006 Revised wording (current) 1.0 2.0 Sept–25-2007 Audio Resource Group, Inc ______________________________________________________ SCS-F18: Project and Product Certification Representative Authorization Letter Page 2 of 2 Rev 2.0 (August 19, 2010) To: SIEMIC, INC. 2206 Ringwood Avenue, San Jose, CA 95131 USA Dear Sir/Madam, Re: Project and Product Certification Representative Authorization Letter We, Audio Resource Group, Inc hereby authorize SIEMIC, INC. to act as a Certification Body for certifying for the following project(s): (Product description, model name) FCC ID: XU4TLK-TX72LA Product name: 72Mhz Wireless Transmitter Model: TLK-TX72LA We affirm that between SIEMIC and Audio Resource Group, Inc , any difference in understanding, including test plan, measurement methods, applicable standards and relevant procedures and processes have been resolved prior to commencement of testing activities. Sincerely, Signature Rick Allerdings/CEO Title: CEO Telephone: 701-769-2700 Email: [email protected] Date: August 19, 2010

Full View To p Vi e w To p Vi e w Bottom View Front View Left View Rear View Right View

FCC ID: XU4TLK-TX72LA 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.

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Top View Bottom View Top View Top View ANTENNA Bottom View Top View Bottom View

TLK-TX72LA wireless transmitter Plug the 9V DC power adapter into a grounded outlet, and set the transmitter to the desired frequency following the instructions in the user’s manual. Install the front antenna or rear antenna as per the conditions in the field. Connect the audio source and transmitter the audio cable. The transmitter will transmit the audio signal wirelessly to the receiver through the FM antenna. The frequency range is 72.1MHz to 75.9MHz.

1 2 3 4 5 6 78 ABCD 8 7 6 5 4 3 2 1 D CBA Title Number Revision Size A2 Date: 9-Aug-2010 Sheet of File: D:\pcb\72MHz\Backup of usa_tx_fcc.DDB Drawn By: R21 C93474 VDD_RF C119 1uF C102 0.1uF VCC2 + C118 VCC2 VDD_RF C1030.01uF C1040.01uF VDD_RF + C1610uF + C9 10uF C105 104 RST CON3 6.35mm MIC INPUT WR RS 123 DC-IN110V D61N4007 R60220R R59390R C117100uF/16V C131 CLK DATA ENB C120100uF Vin 3 Gnd 1 Vout 2 U11 R4851 C11010pF C123 0.1uF C1210.1uF VCC2VDDA + C124 10uF C1271uF C12910uF VDD_RF C1261uF L12 C109 VDD_RF C106 C125 L13 BD10R BD20R VCC1 Vin 3 Gnd 1 Vout 2 U12 ANTENNA C99 10P C108 Q8 R49RES1 R22RES1 JP4SMB KEY * 9 R1710K R14100K VCC VCC VCC2 VCC1 C1104 C11104 C29105 C14104 SCKSDA ADC C13101 C1210uF C56 10uF + C1810uF + C1710uF + C2010uF + C11610uF C5510uF C5410uF SCLSDA VCC2 VCC 1 1 2 2 3 3 4 4 13 13 14 14 15 15 16 16 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 U10 8825 C21104 C3104 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 U5PT2258 R6150k C10010PF C101 10pF x413MHz Q6 Q7 D3DIODE R52RES1 R50RES1 R53RES1 R54RES1 R35RES1 R34RES1 C11110pF C11210pF C11310pF C1141pF C11510pF L14L11 L6 L1L2 C3910pF C311pF C371pF C321pF C331pF C3822pF 1 1 2 2 3 3 4 4 5 5 6 6 U2switch C71pF C61pF JP2SMB ANTENNA S2SW DPDT VDD_RF R51RES1 C10710pF SW4SW SPST LEK 1 LEA 2 GND 3 VDD 4 NC 5 NC 6 CS 7 RST 8 RS 9 WR 10 VI 11 D7 12 D6 13 D5 14 D4 15 GND 20 D3 16 D2 17 D1 18 D0 19 LCD2TFT_LCD PB5 1 PB6 2 PB7 3 RESET 4 VCC 5 GND 6 X2 7 X1 8 PD0 9 PD1 10 PD2 11 PD3 12 PD4 13 PD5 14 PD6 15 PD7 16 VCC 17 GND 18 PC0 19 PC1 20 PC2 21 PC3 22 PC4 23 PC5 24 PC6 25 PC7 26 AVCC 27 GND 28 AREF 29 PA7 30 PA6 31 PA5 32 PA4 33 PA3 34 PA2 35 PA1 36 PA0 37 VCC 38 GND 39 PB0 40 PB1 41 PB2 42 PB3 43 PB4 44 U3MEGA16 VCC1 RST WR RS CLK DATA ENB DC9V DC9V Q5NPN Q1PNP 1 2 2 3 3 4 CON 1 SW3RF_POWER_SELECT R32 100R R33 220R DC5V 1 USB+ 2 USB- 3 GND 4 SDA 5 SCK 6 INT 7 +5V 8 ROUT 9 LOUT 10 GND 11 RIN 12 LIN 13 GND 14 MODUL2 MP3 RECODE +5 1 U+ 2 U- 3 GND 4 CON2USB SCK SDA INT INT U4OPAMPU9 OPAMP R40R41 R3610K R37 10K R38 10K R4222K R56 R43 22K R58R57R55 R10 R39 1 2 2 3 3 4 CON 1 SW5INOUT SELECT 1 2 2 3 3 4 CON 1 SW6FREQ_SELECT 1234 JACK170V_INPUT + C8010uF + C8710uF + C98 + C94 + C122 + C95 + C89 + C97 + C96 + C92 + C24 + C19 + C26 R4610K R4710K R4410KR4510K R2310K R2410K R2810K R2710K SCK SDA VCC2 C128 0.1uF + C130 10uF Vin 3 Gnd 1 Vout 2 U13 VCC R25 R26RES1 VCC C22101 U7OPAMP 1/2VCC 1/2VCC D2DIODE SCHOTTKYD1DIODE SCHOTTKY R2910K ADC CON5MONITOR OUTPUT + C25 + 3 - 2 + 5 - 6 o 1 o 7 VCC 8 GND 4 U8 2180 VCC1 R9 + C2 R31 R30 + C27 + C28 C30104

Shenzhen Certification Technologh Service Co., Ltd 3F, Bldg27,Area A, Tanglang Industrial Zone, Xili Town, Nanshan District, ShenZhen, Guang dong, P.R. China. FCCID: XU4TLK-TX72LA Page 1 of 32 TEST REPORT FCC ID: XU4TLK-TX72LA Applicant : Audio Resource Group, Inc Address : 375 Langdon Ave P.O. Box 39 Hannaford, ND 58448 USA Equipment under Test (EUT): Name : 72Mhz Wireless Transmitter Model : TLK-TX72LA Standards : FCC PART 15, SUBPART C : 2008 (Section 15.237) Report No. : STE100809616 Date of Test : August 13-17, 2010 Date of Issue : August 18, 2010 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above Authorized Signature (Mark Zhu) General Manager The manufacture should ensure that all the products in series production are in conformity with the product sample detailed in this report. 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. Any mention of Shenzhen Certification Technology Service Co., Ltd. Or test done by Shenzhen Certification Technology Service Co., Ltd. Approvals in connection with, distribution or use of the product described in this report must be approved by Shenzhen Certification Technology Service Co., Ltd. Approvals in writing. Report No.:STE100809616 FCCID: XU4TLK-TX72LA Page 2 of 32 TABLE OF CONTENT Description Page 1 General Information------------------------------------------------------------------------------------- 3 1.1 Description of Device (EUT)------------------------------------------------------------------ 3 1.2 Description of Test Facility-------------------------------------------------------------------- 4 2 EMC Equipment List --------------------------------------------------------------------------------- 4 3 Test Procedure ----------------------------------------------------------------------------------------- 5 4 Summary of Measurement ------------------------------------------------------------------------- 6 5 POWER LINE CONDUCTED EMISSION -------------------------------------------------------- 7 5.1 Conducted Emission Limits(15.209&249)-------------------------------------------------7 5.2 Test Setup-----------------------------------------------------------------------------------------7 5.3 Test Procedure-----------------------------------------------------------------------------------8 5.4 Test Resluts---------------------------------------------------------------------------------------8 6 Radiation Emission---------------------------------------------------------------------------------- 10 6.1 Radiation Emission Limits(15.209&237 (c))--------------------------------------------- 10 6.2 Test Setup--------------------------------------------------------------------------------------- 11 6.3 Test Procedure--------------------------------------------------------------------------------- 12 6.4 Test Equipment Setting For emission test.est Result--------------------------------- 13 6.5 Test Condition---------------------------------------------------------------------------------- 13 6.6 Test Result-------------------------------------------------------------------------------------- 13 7 Occupied bandwidth -------------------------------------------------------------------------------- 18 7.1 Test limit------------------------------------------------------------------------------------------ 18 7.2 Method of measurement--------------------------------------------------------------------- 18 7.3 Test Setup--------------------------------------------------------------------------------------- 18 8 Antenna Requirement ------------------------------------------------------------------------------ 22 8.1 Standard Requirement----------------------------------------------------------------------- 22 8.2 Antenna Connected Construction---------------------------------------------------------- 22 8.3 Result--------------------------------------------------------------------------------------------- 22 9 Photographs of Test Setup ----------------------------------------------------------------------- 23 10 Photographs of EUT--------------------------------------------------------------------------------- 25 Report No.:STE100809616 FCCID: XU4TLK-TX72LA Page 3 of 32 1 General Information 1.1 Description of Device (EUT) Trade Name : N/A EUT : 72Mhz Wireless Transmitter Model No. : TLK-TX72LA Type of Antenna : Integral Antenna (Provided by non-manufacturers will use the product can not work) Operation Frequency : 72.0-73.0MHz, 74.6-74.8MHz, 75.2-76.0MHz Channel number : 8 (CH1 72.1MHz, CH2 72.5MHz, CH3 72.7MHz, CH4 72.9MHz, CH5 74.7MHz, CH6 75.3MHz, CH7 75.7MHz, CH8 75.9MHz ) Modulation type : FM Power Supply : DC 9V Supply by Adapter Rated PF output Power 91.26 dBuV (PK detector) Applicant : Audio Resource Group, Inc Address : 375 Langdon Ave P.O. Box 39 Hannaford, ND 58448 USA Manufacturer : SHENZHEN ALCORS TECHNOLOGY CO., LTD Address : Room0304, 3/F, 3063# Buxin dongxiao Road luohu shenzhen guangdong china Report No.:STE100809616 FCCID: XU4TLK-TX72LA Page 4 of 32 1.2 Description of Test Facility Shenzhen Certification Technology Service Co.,Ltd. 3F, Bldg.27, Area A, Tanglang Industrial Zone, Xili Town, Nanshan District, Shenzhen 518055, Guangdong, P.R. China FCC Registered No.:305283 2 EMC Equipment List Equipment Manufacture Model No. Serial No. Last cal. Cal Interval 3m Semi-Anechoic ETS-LINDGREN N/A SEL0017 16/06/2010 1Year Spectrum analyzer Agilent E4443A MY46185649 06/06/2010 1Year Receiver R&S ESCI 100492 06/06/2010 1Year Receiver R&S ESCI 101202 07/01/2010 1Year Bilog Antenna Sunol JB3 A121206 04/06/2010 1Year L.I.S.N. R&S ESH3-Z5 100305 16/06/2010 1Year Horn Antenna EMCO 3115 640201028-0 6 04/06/2010 1Year Power Meter Anritsu ML2487A 6K00001491 23/02/2010 1Year ETS Horn Antenna ETS 3160 SEL0076 18/06/2010 1Year Active Loop Antenna Beijing Daze ZN30900A SEL0097 1…

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Photographs-Radiated Emission Test Setup in Chamber Photographs-Conducted Emission Test Setup