O3U630174TXWireless Audio

To: Lee Wing Yan ITS/ES-HKG Cc: Robert F. Martin ITS/ES-Box Subject: RE: FCC ID: O3U630174TX Dear Yan: Thank you for this application for a Part 15 107.7 MHz FM band transmitter. Administrative review is complete, and the following are noted: 1) The Operational description is missing. Please provide. 2) The Test report shows the fundamental 15 dB below the applicable limit. That is very low. does this device actually work? 3) The Bandwidth plot shows the marker on the fundamental peak at 107.9 MHz. This is different from the Test report data table (107.568 MHz). Neither is at the Form 731 frequency of 107.7 MHz. Can these differences be explained? This is important because the fundamental is very close to the upper limit of 108 MHz, above which there can be NO emissions. Accordingly, please provide: a) a description of how the emission frequency is set (there is no crystal); b) a bandwidth plot clearly showing that the emission bandwidth is 200 kHz or less, and showing that there are no emissions above 108 MHz. Thank you, Roland -----Original Message----- From: Lee Wing Yan ITS/ES-HKG Sent: Thursday, June 21, 2001 6:15 AM To: Roland Gubisch ITS/ES-Box Subject: FCC ID: O3U630174TX Dear Roland, Attached please find 5 files of application for FCC ID: O3U630174TX. 1. Test report 2. Operation Description 3. Radiated Emission Photo 1 4. Radiated Emission Photo 2 5. Bandwidth Plot Thanks & regards. Yan.

Product Description The equipment under test (EUT) is a transmitter a Wireless Audio operating at 107.8 MHz which is controlled by a crystal. The EUT is powered by four 1.5V AA batteries. There is a ON/OFF switch on the EUT. Once turn on the EUT and input a audio signal into the EUT. It can transmit a RF signal out . The brief circuit description is listed as follows : -Q2 and associated circuit act as Audio Amplifier -Q1 and associated circuit act as RF Amplifier -C9, L5 and associated circuit act as Local Oscillator.

Frequency Alignment Procedure of #630174 Real Shuttle Commander 1.Transmitter a)Connect the transmitter unit to the DC power supply (+6VDC); b)Use the Spectrum Analyzer to monitor the frequency; c)Adjust the coil L5 on the PCB unit the frequency reading on the Spectrum Analyzer is 107.7MHz +/-0.05MHz; d)Use the wax to seal and fix the coil L5. 2.Receiver a)Connect the receiver unit to the DC power supply (+4.5VDC); b)Use the Sweep Generator to generate a RF signal of 107.7MHz, and connect the speaker output of the receiver unit to the input of the Sweep Generator, there will be a “S” curve display on the Sweep Generator c)Adjust the coil L1 to align the center point of the “S” curve on the Sweep Generator to the frequency point of 107.7MHz +/- 0.1MHz; d)Use the wax to seal and fix the coil L1.

• The test results reported in this report shall refer only to the sample actually tested and shall not refer or be deemed to refer to bulk from which such a sample may be said to have been obtained. • This report shall not be reproduced except in full without prior authorization from Intertek Testing Services Hong Kong Limited FCC ID : O3U630174TX Playmates Asia Services Limited Application For Certification (FCC ID: O3U630174TX) Transmitter, Model : 630174 We hereby certify that the sample of the above item is considered to comply with the requirements of FCC Part 15, Subpart C for Intentional Radiator, mention 47 CFR [10-1-99 edition] WO# 0107031 WN/at June 21, 2001 INTERTEK TESTING SERVICES FCC ID: O3U630174TX i LIST OF EXHIBITS INTRODUCTION EXHIBIT 1:General Description EXHIBIT 2:System Test Configuration EXHIBIT 3:Emission Results EXHIBIT 4:Equipment Photographs EXHIBIT 5:Product Labelling EXHIBIT 6:Technical Specifications EXHIBIT 7:Instruction Manual EXHIBIT 8:Miscellaneous Information INTERTEK TESTING SERVICES FCC ID: O3U630174TX ii MEASUREMENT/TECHNICAL REPORT Playmates Asia Services Limited - MODEL: 630174 FCC ID: O3U630174TX June 21, 2001 This report concerns (check one:)Original Grant X Class II Change Equipment Type: Low Power Transmitter (example: computer, printer, modem, etc.) Deferred grant requested per 47 CFR 0.457(d)(1)(ii)?Yes No X If yes, defer until: date Company Name agrees to notify the Commission by: date of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37?Yes No X If no, assumed Part 15, Subpart C for intentional radiator Report prepared by:Wilbur Ng Intertek Testing Services 2/F., Garment Center, 576, Castle Peak Road, HONG KONG Phone:852-2173-8502 Fax:852-2742-9149 INTERTEK TESTING SERVICES FCC ID: O3U630174TX iii Table of Contents 1.0 General Description.......................................................................................................................2 1.1 Product Description...................................................................................................................2 1.2 Related Submittal(s) Grants.....................................................................................................2 1.3 Test Methodology......................................................................................................................3 1.4 Test Facility...............................................................................................................................3 2.0 System Test Configuration............................................................................................................5 2.1 Justification...............................................................................................................................5 2.2 EUT Exercising Software..........................................................................................................5 2.3 Special Accessories....................................................................................................................5 2.4 Equipment Modification...........................................................................................................6 2.5 Support Equipment List and Description.................................................................................6 3.0 Emission Results............................................................................................................................8 3.1 Field Strength Calculation........................................................................................................9 3.1 Field Strength Calculation (cont’d).........................................................................................10 3.2 Radiated Emission Configuration Photograph......................................................................11 3.3 Radiated Emission Data.........................................................................................................12 4.0 Equipment Photographs.............................................................................................................15 5.0 Product Labelling.........................................................................................................................17 6.0 Technical Specifications..............................................................................................................19 7.0 Instruction Manual......................................................................................................................21 8.0 Miscellaneous Information.........................................................................................................23 8.1 Measured Bandwidth..............................................................................................................24 8.2 Emissions Test Procedures.....................................................................................................25 8.2 Emissions Test Procedures (cont'd)........................................................................................26 INTERTEK TESTING SERVICES FCC ID: O3U630174TX iv List of attached file Exhibit typeFile Descriptionfilename Test ReportTest Reportreport.doc Operation DescriptionTechnical Descriptiondescri.pdf Test Setup PhotoRadiated Emissionradiated1.jpg to radiated2.jpg Test ReportBandwidth Plotbw.pdf External PhotoExternal Photoophoto1.jpg to ophoto2.jpg Internal PhotoInternal Photoiphoto1.jpg to iphoto2.jpg Block DiagramBlock Diagramblock.pdf SchematicsCircuit Diagramcircuit.pdf ID Label/LocationLabel Artwork and Locationlabel.pdf User ManualUser Manualmanual.pdf INTERTEK TESTING SERVICES FCC ID: O3U630174TX 1 EXHIBIT 1 GENERAL DESCRIPTION INTERTEK TESTING SERVICES FCC ID: O3U630174TX 2 1.0General Description 1.1Product Description The equipment under test (EUT) is a transmitter a Wireless Audio operating at 107.7 MHz which is controll…

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