EF4ACP00870

Schwaninger & Associates, P. C . Attorneys at Law Robert H. Schwaninger, Jr. Michael L. Higgs, Jr.t Delaney M. DiStefano Benjaniin J. Aron R ichard P. Hanno t t Admit t ed in M ary land 1331 H Street, N.W., Suite 500, Washington, DC 20005 Internet Address - http: //www. sa-lawyers. net telephone - (202) 347-8580 facsimile - (202) 347-8607 Richard Philip Hanno May 17, 2000 1) Block Diagram2) Operational Description 3) Schematics As attorney's for Linear Corporation, in accord with Section 1. 12 of the Commission's Rules, please provide us with a copy of any correspondence regarding this matter. Thank you for your assistance. Very truly yours, 411"' Vic Jackson Interconnection Consultant RPH:dm via Electronic Filing Dear Sir or Madam: On behalf of Linear Corporation, we hereby revise our Confidentiality Request submitted on April 5, 2000 in regards to attachments files in association with the above referenced matter. The attachments for which we request confidentiality are as follows: Federal Communications CommissionOffice of Engineering and Technology Authorizations and Evaluation Division, Application Branch 7435 Oakland Mills Road Columbia, Maryland 21046 Colombia, Maryland 21046 Re: Applicant: Linear Corporation731 Confirmation Number: EA96794 FCC ID: EF4 ACP00870 Device: GT-31 Remote Control Transmitter Correspondence Ref. No.: 13753 Confirmation Number: EA96794

FCC IDENTIFICATION LABEL Model: Mini-Three Button Remote Control Transmitter Linear Corp. requests authority to use the label as depicted, in accord with Sections 2.925(e) and 15.19(a)(5) of the Commission's Rules, follows herein. LABEL FACSIMILE Linear Corporation Model: GT-31 Frequency: 390 MHz Request for Authorization of Section 2.925(e) and 15.31 (a)(5) The device for which Linear seeks authority is small in size and does not lend itself to the placement of a label, with associated warnings and instructions, in accord with the FCC labeling requirements. For Linear to produce such a label, the type size would be too small as to be useful to purchasers of the device. Accordingly, Linear requests authority to place upon the device an identification label such as the one depicted herein identified as LABEL FACSIMILE. The additional information which is normally required to be included with the FCC Identification Number in accord with Part 15 of the Commission's Rules shall be located herein as portion of the draft manual attached hereto. Accordingly, in accord with Section 2.925(e) and 15.19(a)(5)of the Commission's Rules and past Commission decisions, Linear hereby requests authority to label its devices in the manner described herein. The user instruction manual will have the full text of the FCC disclaimer printed in a prominent location as follows: This device complies with FCC Part 15 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. Linear Corporation; FCC ID: EF4 ACP00870 FCC ID: EF4 ACP00870 Linear Corporation FCC ID: EF4 ACP00870

Radio Standard Specification Low Power Communication Devices C63.4-1992 and FCC Rules Part 15 1.0 General: 1.2, Exclusions to TV Broadcast Freq. Complies 2.0 Related Documents: Reference Documents for Application:CFR 47, FCC Rules Part 15 3.0 Test Equipment: Supply Voltage:Fresh GP-23 12 volt alkaline battery Test Equipment ListSee Section 6 Signal Detector:Peak with 11 dB, peak to average conversion. 4.0 Certification and Test Results: Summary of Results per See Page 1 of this Report 5.0 General Technical Requirements: 5.1 Testing Methods:Peak Signal pulse width modulated A1D signal. 5.1 Reference Standard:C63.4-1992 (FCC Procedure) 5.2 Modulation:Pulse Width A1D, AM Modulation 5.3 Type of Antenna:Integral to Transmitter PCB 5.4 External Controls:Single Push Button No user serviceable parts except for replacement of batteries. 5.5 Accessories:NONE 5.6 TX Bandwidth:<0.010 % (See Section 8) 5.7 Equipment Labels:See Section 2 5.8 Manual Disclaimer:See attached draft copy of manual 5.9 Usage Restrictions:Digital Pulse Code Only Linear CorporationFCC ID: EF4 ACP00870 6.0 Transmitter Characteristics and Tests: 6.1 Momentary Operated Devices:Complies 6.1(a) Types of Signals:Manual Push to Transmit 6.1(a) Automatic Activation:N/A 6.1(a) Five Second Max. upon release: Complies 6.1(b) Maximum Field Strength:390 MHz = 9170 uV/mtr at 3 meters. 6.1(c) Bandwidth (20 dB down)<0.010 % Complies 6.1(d) Frequency StabilityN/A per regulations +/- 0.125 MHz Maximum Error 6.1(e) Reduced Field StrengthN/A 6.2 Non-Momentary Operated Devices: N/A 6.2.1 Frequency Bands:Refer to Table 1 6.3 Restricted Bands:Complies 6.5 Pulsed Operation:Complies (11 dB Peak/Average) See Section 8 6.6 Wireline Conducted Emissions:N/A 7.0 ReceiversN/A 8.0 Self Certification:N/A 9.0 AC Wireline Conducted Emissions:N/A 10.0 Terminated Measurement Method:N/A 11.0 Radiated Measurement Method:See Section 8 11.1 Measuring Distance:Complies 11.2 Open Field Test Site:Complies, C63.4-1992 11.3 Equipment Test Platform:See Section 8 11.4 Measurement Method:Complies, See Section 8 12.0 DC Power Consumption Methods:N/A 13.0 Near Field Measurement for < 30 MHz:N/A 14.0 Test Report Submission:See Attached Linear CorporationFCC ID: EF4 ACP00870 TESTING INSTRUMENTATION AND EQUIPMENT LIST SPECTRUM ANALYZERS : H.P.HP8562A1KHz to 22GHz S/N 2913A03742 Calibrated 1/99 Due 1/00 ANTENNAS : (2)Ailtech DM105A T120-200 MHzTuned Dipole S/N 93412-105 and 93412-114 Calibrated 1/99 Due:1/00 (2)Ailtech DM105A T2140-400 MHzTuned Dipole S/N 93413-113 and 93413-117 Calibrated 1/99 Due:1/00 (2)Ailtech DM105A T3400-1000 MHz Tuned Dipole S/N 93413-105 and 93414-111 Calibrated 1/99 Due 1/00 (2)AH SystemsSAS-200/5111-12.4 GHzLog Periodic S/N 118 and 124, P/Ns 2069 (1)AH SystemsSAS-200/54020-330 MHzBiconical S/N 367P/N 2052 INSTRUMENT ATION : H.P.HP8656B RF Generator100 KHz - 990 MHz S/N A4229590 Calibrated 1/99 Due 1/00 Solar Electronics Line Impedance Stabilization Network, Type 8012-50-R-24-BNCCalibrated:1/99 S/N 8379585Due:1/00 HP 8447D Broadband preamplifier, 0.1-1300 MHz S/N 2443A03660 Calibrated: 4/99 Due: 4/00 Mini-CircuitsZFL-2000 broadband preamplifier, 10-3000 MHz S/N Lin 001Calibrated: 4/99 Due: 4/00 ACCESSORIES : (2)Ailtech Rulers calibrated in MHz 4 Meter ABS Antenna Mast and Trolley Tektronix C5C Scope Camera Eighty Centimeter Tall, Motorized Wooden Turntable BNC to BNC Cables - as-required (2)25' RG-214/U Low-loss Coaxial Cable S/N- LIN001 & LIN002 Calibrated: 1/99 Due: 1/00 (2)3' RG-55/U Low-loss Coaxial Cable, calibarated as part of the preamplifiers. Automatically taken into account when used with the above itemized range preamplifiers. Linear CorporationFCC ID: EF4 ACP00870 MEASUREMENT OF RADIO FREQUENCY EMISSION OF CONTROL AND SECURITY ALARM DEVICES FCC RULES PART 15, C63.4-1992 TEST PROCEDURE I. INTRODUCTION As part of a continuing series of quality control tests to ensure compliance with all applicable Rules and Regulations, this enclosure details the test procedures for certain radio control devices. Testing was performed at a test site located on the property of Linear Corporation, 2055 Corte del Nogal, Carlsbad, California 92009. II. MEASUREMENT FACILITY DESCRIPTION The test facility is a specially prepared area adequately combining the desirability of an interference free location with the convenience of nearby 120 volt power outlets, thus completely eliminating the incidence of inverter hash, so often a problem with field measurements. III. DESCRIPTION OF SUPPORTING STRUCTURES For Measuring Equipment - The antenna is supported on a trolley that can be raised and lowered on a mast by means of remote control to any level between 1 meter and 4 meters above the ground. For measurements at 3 meters, an antenna height (center of dipole) of about 1 meter generally yields the greatest field strength. For measurements at 1 meter, an antenna height equal to the device under test generally yields the greatest field strength. Usually, horizontal polarization yields the greatest field strength for both 1 and 3 meter measurements. For Equipment Under Test (EUT): The equipment to be tested is supported by a wooden turntable at a height of eighty centimeters. A two axis swivel at the top of the turntable permits the unit under test to be manually oriented in the position of maximum received signal strength. The turntable can be rotated by remote control. Test Configuration - All transmitters were located eighty centimeters above ground, at a distance of three meters from the antenna. They were each oriented for maximum radiation by rotating the turntable. The antenna was then moved vertically along the mast for optimum reception in both horizontal and vertical planes. Where no emissions were found, the antenna was also moved to one meter distance to improve system sensitivity. All receivers were located eighty centimeters above ground, at a distance of three meters from the antenna. They were each oriented for maximum radiation by rotating the turntable. The a…

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