JFZT5000ADHANDHELD WIRELESS MICROPHONE

February 8, 2010 Equipment Authorization Division Office of Engineering and Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Ref: FCC ID: JFZT5000AD Request for Confidentiality Dear Sirs: With regard to the referenced application, Audio-Technica, is requesting confidentiality of certain sections of the accompanying documents. The documents for which Audio Technica is requesting confidentiality are: Schematic for AEW-T3300aD, AEW-T4100aD, AEW-T5400aD and AEW-T6100aD wireless handheld transmitter Block diagram for AEW-T3300aD, AEW-T4100aD, AEW-T5400aD and AEW-T6100aD wireless handheld transmitter Operational description for AEW-T3300aD, AEW-T4100aD, AEW-T5400aD and AEW-T6100aD wireless handheld transmitter Tuning / Adjustment procedure for AEW-T3300aD, AEW- T4100aD, AEW-T5400aD and AEW-T6100aD wireless handheld transmitter Parts list for AEW-T3300aD, AEW-T4100aD, AEW-T5400aD and AEW-T6100aD wireless handheld transmitter This request is made under the provisions of Section 0.457(d) of the Commission’s Rules, and Section 552(b)(4) of the Freedom of Information Act. The material for which confidentiality is requested falls within the scope of Section 552(b)(4) as trade secrets and includes material covered by Section 0.459 of the Commission’s Rules. Sincerely, Jacquelynn Green Vice President R&D Audio-Technica U.S., Inc.

APPLICANT: AUDO TECHNICA CORP. FCC ID: JFZT5000AD INTERNAL PHOTOS

FCC PART 74 AND INDUSTRY CANADA RSS-123 LOW POWER LICENSED TRANSMITTER TEST REPORT APPLICANT AUDIO TECHNICA CORPORATION 2206 NARUSE, MACHIDA TOKYO 194 JAPAN FCC ID JFZT5000AD IC CERT 1752B-AEW5000AD MODEL NUMBER AEW-T5400aD, AEW-T3300aD, AEW-T4100aD, AEW-T6100aD PRODUCT DESCRIPTION HANDHELD WIRELESS MIC DATE SAMPLE RECEIVED 1/20/2010 DATE TESTED 2/2/2010 TESTED BY NAM NGUYEN APPROVED BY MARIO R. DE ARANZETA TIMCO REPORT NO. 143AUT10TestReport.doc TEST RESULTS PASS FAIL THE ATTACHED REPORT SHALL NOT BE REPRODUCED EXCEPT IN FULL WITHOUT THE WRITTEN APPROVAL OF TIMCO ENGINEERING, INC. 849 NW STATE ROAD 45 NEWBERRY, FL 32669 USA PH: 888.472.2424 OR 352.472.5500 FAX: 352.472.2030 EMAIL: [email protected] HTTP://WWW.TIMCOENGR.COM Certificate # 0955-01 Applicant: AUDIO TECHNICA CORPORATION FCC ID: JFZT5000AD IC #: 1752B-AEW5000AD MODEL #: AEW-T5400aD, AEW-T3300aD, AEW-T4100aD, AEW-T6100aD REPORT: Z:\A\AudioTechnica_JFZ\143AUT10\143AUT10TestReport.doc Page 2 of 17 TABLE OF CONTENTS GENERAL REMARKS ........................................................................................................3 GENERAL INFORMATION .................................................................................................4 TEST PROCEDURES ........................................................................................................6 RF POWER OUTPUT .........................................................................................................7 MODULATION CHARACTERISTICS ...................................................................................8 VOICE MODULATED COMMUNICATION EQUIPMENT .......................................................9 AUDIO INPUT VERSUS MODULATION ............................................................................ 10 OCCUPIED BANDWIDTH ................................................................................................ 11 SPURIOUS EMISSIONS AT ANTENNA TERMINALS (CONDUCTED) ................................... 13 FIELD STRENGTH OF SPURIOUS EMISSIONS ................................................................ 14 RADIATED EMISSIONS CONTD. ..................................................................................... 15 FREQUENCY STABILITY ................................................................................................. 16 EMC EQUIPMENT LIST .................................................................................................. 17 Applicant: AUDIO TECHNICA CORPORATION FCC ID: JFZT5000AD IC #: 1752B-AEW5000AD MODEL #: AEW-T5400aD, AEW-T3300aD, AEW-T4100aD, AEW-T6100aD REPORT: Z:\A\AudioTechnica_JFZ\143AUT10\143AUT10TestReport.doc Page 3 of 17 GENERAL REMARKS The attached report shall not be reproduced except in full without the written permission of Timco Engineering Inc. The test results relate only to the items tested. Summary The device under test does: fulfill the general approval requirements as identified in this test report not fulfill the general approval requirements as identified in this test report Attestations This equipment has been tested in accordance with the standards identified in this test report. To the best of my knowledge and belief, these tests were performed using the measurement procedures described in this report. All instrumentation and accessories used to test products for compliance to the indicated standards are calibrated regularly in accordance with ISO 17025 requirements. Certificate # 0955-01 I attest that the necessary measurements were made, under my supervision, at: Timco Engineering Inc. 849 NW State Road 45 Newberry, Fl 32669 Authorized Signatory Name: Mario de Aranzeta C.E.T. Compliance Engineer/ Lab. Supervisor Date: 2/2/2010 Applicant: AUDIO TECHNICA CORPORATION FCC ID: JFZT5000AD IC #: 1752B-AEW5000AD MODEL #: AEW-T5400aD, AEW-T3300aD, AEW-T4100aD, AEW-T6100aD REPORT: Z:\A\AudioTechnica_JFZ\143AUT10\143AUT10TestReport.doc Page 4 of 17 GENERAL INFORMATION RULES PART 2.1033 DUT TECHNICAL DESCRIPTION DUT Description HANDHELD WIRELESS MIC FCC ID JFZT5000AD IC Certification 1752B-AEW5000AD Model Number AEW-T5400aD, AEW-T3300aD, AEW-T4100aD, AEW- T6100aD Modulation FM Type of Emission 110KOF3E Bn = 2M+2DK M = 15000 D = 40 kHz (Peak Deviation) K = 1 Bn = 2(15k) + 2(40k)(1) = 110k Frequency Range (655.50 – 680.375) MHz Test Frequencies 655.50 – 667.95 – 680.38 Maximum Output Power 0.035 Watts Conducted DUT Power Source 110–120Vac/50– 60Hz DC Power Battery Operated Exclusively Test Item Prototype Pre-Production Production Type of Equipment Fixed Mobile Portable Applicant: AUDIO TECHNICA CORPORATION FCC ID: JFZT5000AD IC #: 1752B-AEW5000AD MODEL #: AEW-T5400aD, AEW-T3300aD, AEW-T4100aD, AEW-T6100aD REPORT: Z:\A\AudioTechnica_JFZ\143AUT10\143AUT10TestReport.doc Page 5 of 17 GENERAL INFORMATION Test Facility Timco Engineering, Inc. 849 NW State Road 45, Newberry, FL 32669 Test Condition The temperature was 26ºC with a relative humidity of 50% . Modifications None Test Exercise (e.g. software description, test signal, etc.) The DUT was placed in continuous transmit mode of operation. Applicable Standards ANSI/TIA 603-C:2004, FCC CFR 47 Parts 2 and 74, RSS- 123 Issue 1, Rev. 2 Applicant: AUDIO TECHNICA CORPORATION FCC ID: JFZT5000AD IC #: 1752B-AEW5000AD MODEL #: AEW-T5400aD, AEW-T3300aD, AEW-T4100aD, AEW-T6100aD REPORT: Z:\A\AudioTechnica_JFZ\143AUT10\143AUT10TestReport.doc Page 6 of 17 TEST PROCEDURES Power Line Conducted Interference: The procedure used was ANSI/TIA 603-C:2004 using a 50uH LISN. Both lines were observed with the DUT transmitting. The bandwidth of the spectrum analyzer was 10 kHz with an appropriate sweep speed. Bandwidth 20 dB: The measurements were made with the spectrum analyzer's resolution bandwidth (RBW) = 1 MHz and the video bandwidth (VBW) = 3 MHz and the span set as shown on plot. Power Output: For a device with a fixed antenna, RF power is measured as ERP as the antenna is permanently attached. The substitution method was used as described…

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