HBW2027Remote Control Transmitter

845 Larch Ave. Elmhurst, IL 60126 Phone 630.993.6306 Fax 630.530.6140 Email: [email protected] December 7, 2004 Federal Communications Commission EQUIPMENT APPROVAL SERVICES PO Box 358315 Pittsburgh, PA 15251-5315 Re: Request for Confidentiality HBW2027 Dear Dan, Indicated on the Elite’s CSF-20-03 form, Item 9 is a “Request for Confidentiality” for the TCB certification of remote control transmitter Model 139.53752 identifier HBW2027. Please include the schematic, block diagram, and theory of operation as part of the confidentiality request. Sincerely, THE CHAMBERLAIN GROUP, INC. Barbara Kelkhoff Manager, Regulatory Affairs

Page 1 of 17 Engineering Test Report No. 34186-01 Measurement of RF Interference from a Chamberlain Model 001A6139 Garage Door Opener For : Chamberlain Manufacturing Elmhurst, IL P.O. No. : 851337 Date Received : October 21, 2004 Date Tested : October 22, 2004 Test Personnel : Richard E. King Specification : FCC "Code of Federal Regulations” Title 47 Part 15, Subpart C Test Report By : Richard E. King Witnessed by : Chamberlain Manufacturing Approved By : Raymond J. Klouda Registered Professional Engineer of Illinois - 44894 Elite Electronic Engineering Inc. 1516 Centre Circle Downers Grove, IL 60515 Tel : (630) 495-9770 Fax: (630) 495-9785 www.elitetest.com Engineering Test Report No. 34186-01 THIS REPORT SHALL NOT BE REPRODUCED, EXCEPT IN FULL, WITHOUT THE WRITTEN APPROVAL OF ELITE ELECTRONIC ENGINEERING INCORPORATED. Page 2 of 17 TABLE OF CONTENTS PARAGRAPH DESCRIPTION OF CONTENTS PAGE NO. 1.0 INTRODUCTION.................................................................................................................................................................. 3 1.1 Description of Test Item ..................................................................................................................................................... 3 1.2 Purpose .............................................................................................................................................................................. 3 1.3 Deviations, Additions and Exclusions................................................................................................................................. 3 1.4 Applicable Documents ....................................................................................................................................................... 3 1.5 Subcontractor Identification................................................................................................................................................ 3 1.6 Laboratory Conditions ...................................................................................................................................................... 3 2.0 TEST ITEM SETUP AND OPERATION...............................................................................................................................3 2.1 Power Input........................................................................................................................................................................ 4 2.2 Grounding.......................................................................................................................................................................... 4 2.3 Peripheral Equipment ......................................................................................................................................................... 4 2.4 Interconnect Cables ............................................................................................................................................................ 4 2.5 Operational Mode............................................................................................................................................................... 4 2.6 Test Item Modifications.................................................................................................................................................... 4 3.0 TEST EQUIPMENT............................................................................................................................................................... 4 3.1 Test Equipment List ........................................................................................................................................................... 4 3.2 Calibration Traceability .................................................................................................................................................... 4 3.3 Measurement Uncertainty................................................................................................................................................. 4 4.0 REQUIREMENTS, PROCEDURES AND RESULTS........................................................................................................... 5 4.1 Powerline Conducted Emissions ...................................................................................................................................... 5 4.1.1 Requirements ............................................................................................................................................................ 5 4.2 Duty Cycle Factor Measurements.................................................................................................................................... 5 4.2.1 Procedures................................................................................................................................................................ 5 4.2.2 Results...................................................................................................................................................................... 5 4.3 Radiated Measurements .................................................................................................................................................... 5 4.3.1 Requirements ............................................................................................................................................................ 5 4.3.2 Procedures................................................................................................................................................................. 6 4.3.3 Results....................................................................................................................................................................... 7 4.4 Occupied Bandwidth Measurements ............................................................................…

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