EF4DNT00089Garage Door Opener

LINEAR LLC FCC ID: EF4 DNT00089

LINEAR LLC FCC ID: EF4 DNT00089 STATEMENT OF ATTESTATION MCT-3 - Remote Control Transmitter FCC ID: EF4 DNT00089 The equipment under test is a low powered visor clip style transmitter used as a remote control transmitter for garage door operators. No supervisory signals are provided by this transmitter. This equipment has been tested in accordance with the requirements contained in the appropriate Commission regulations. To the best of my knowledge, these tests were performed using measurement procedures consistent with industry or commission standards and demonstrate that the equipment complies with the appropriate standards. Each unit manufactured, imported or marketed, as defined in the Commission's regulations, will conform to the sample(s) tested within the variations that can be expected due to quantity production and testing on a statistical basis. I further certify that the necessary measurements were made by Linear LLC, 2055 Corte Del Nogal, Carlsbad, California. 92009. Certified by: __________________________ _ April 9, 2004 _ John W. Kuivinen, P.E. Date Regulatory Compliance Engineer

LINEAR LLC FCC ID: EF4 DNT00089 318 MHZz OSCILLATOR

LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089 FCC LABEL AT THIS LOCATION

LINEAR LLC FCC ID: EF4 DNT00089 FCC IDENTIFICATION LABEL Model: MCT-3 Three Button Remote Control Transmitter Linear Corp. requests authority to use the label as depicted, in accord with Section 2.925(e) of the Commission's Rules, follows herein. LABEL FACSIMILE Linear LLC Model: DNT00089 Frequency: 318 MHz Request for Authorization of Section 2.925(e) 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) 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 and Industry Canada Rules and Regulations. 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. FCC ID: EF4 DNT00089

LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089 FCC LABEL AT THIS LOCATION

LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089

LINEAR LLC FCC ID: EF4 DNT00089 SPECIFICATIONS & FUNCTIONAL DESCRIPTION MCT-3 REMOTE CONTROL TRANSMITTER 1.0 DESCRIPTION The MCT-3 is a low-power hand held remote control device operating at a frequency of 318 MHz. The signal output is a binary-coded, pulse-position type A1D modulated transmission which has an information rate of approximately 167 bits per second (bps). It is coded by Megacode® formatted wireless data for the Linear LLC garage door operators. Actuating one of the push buttons illuminates a light-emitting diode (LED) and activates the transmitter. Releasing the push-button immediately terminates transmission. Transmission time is limited to 10 seconds if button is held on. 2.0 FUNCTIONAL DESCRIPTION The push-button switches, S1 - S3 apply power to the unit and activates L.E.D. (D3). Digital encoding is a function of microprocessor, U1. An internally generated microcontroller clock runs at 4MHz and creates the coding and timing sequence. There are over 1 million possible code combinations. Transmitter coding is done during manufacture and is not user accessible. The RF oscillator Q1 functions as a tuned oscillator whose frequency control and feedback is determined by a L/C tank circuit. The inductive trace load L2 is configured on the circuit board as the principle-radiating element with tuning capacitor C5 to adjust the output frequency. Base bias resistors R8 & R9 in conjunction with the feedback capacitors C2 and C3 regulates the power output of the oscillator. Because of the transmitter's small size, its radiation pattern is similar to that of an elementary dipole. LINEAR LLC FCC ID: EF4 DNT00089 3.0 SPECIFICATIONS Product Identification: MCT-3, Three channel remote control transmitter Encoding Technique: A1D Pulse position Modulation at 167 bits/sec. Number of codes: > 1 X 10^6 (1 X 2^20) RF Carrier Frequency: 318 MHz +\- 2 MHz Power Requirements: 6 VDC - 3 volt #2032 coin cell lithium batteries, 12 mA maximum current - operating, < 2 uA standby Operating Temperature Range: 0 to 50 ο C Tested –30 to +70 °C Timing: 10-second maximum transmission per activation Size: 3” x 2” x 0.5” (approx.) Includes metal visor clip accessory. All specifications nominal unless specified. LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089

LINEAR LLC FCC ID: EF4 DNT00089

LINEAR LLC FCC ID: EF4 DNT00089 DEVICE: MCT-3 Remote Control Transmitter PHOTOGRAPH: Occupied Bandwidth CONDITIONS: Transmitter Fundamental. A1D Modulation - Pulse Position Modulation. L/C Tuned Frequency Determining Element. SPECTRUM ANALYZER CONTROL SETTINGS CENTER FREQUENCY: 318 MHz INPUT ATTENUATION: -10 dB SCAN WIDTH: 5.0 KHz / Div. PREAMPLIFIER GAIN: 0 dB SCAN TIME: 0.1 Sec / Div. LOG REF. LEVEL: -10 dBm RF BANDWIDTH: 0.3 KHz ANTENNA: 6" Whip Ant. at Analyzer Input TUNED TO: N/A ANTENNA DISTANCE: 0.25 Meters ANTENNA HEIGHT: N/A SYSTEM NOISE FLOOR: N/A NOTES: Per 15.231(c), Occupied Bandwidth (20 dB down) is less than +/- 20 KHz. This is less than 0.020% of the center frequency. FCC Rules, 15.231(c) devices must be less than 0.25% of center frequency. This device therefore complies with 15.231(c). LINEAR LLC FCC ID: EF4 DNT00089 DEVICE: MCT-3 Remote Control Transmitter PHOTOGRAPH: Transmitter Spurious Emissions +/-25 MHz of the tuned center freq. Peak of RF signal set to zero dB reference line (top of screen). CONDITIONS: Transmitter Fundamental. A1D Modulation, SAW Resonator Frequency Determining Element. SPECTRUM ANALYZER CONTROL SETTINGS CENTER FREQUENCY: 318 MHz INPUT ATTENUATION: -10 dB SCAN WIDTH: 5.0 MHz/ Div. PREAMPLIFIER GAIN: 0 dB SCAN TIME: 1.0 Sec. / Div. LOG REF. LEVEL: -20 dBm RF BANDWIDTH: 10 KHz ANTENNA: 6" Whip Antenna on Analyzer Input TUNED TO: N/A ANTENNA DISTANCE: 0.25 Meters ANTENNA HEIGHT: N/A SYSTEM NOISE FLOOR: N/A No significant emissions occur outside of the of the rated center freq. except for harmonic spurious signals.

LINEAR LLC FCC ID: EF4 DNT00089 Summary of Test Results in accord with FCC Rules Part 15 and C63.4-2001 Equipment Model: DNT00089 Transmitter Tested to C63.4-2001 Section: FCC Rules 15.231 Field Strength at a distance of 3 meters: 2500 uV/Mtr (- 7 dB below limit) @ 318 MHz Peak to Average Ratio: 15.6 dB - Fixed Duty Cycle Test Conditions: Radiated (Sections 11 & 13) Transmitter: Transmitter Frequency: 318.00 MHz Nominal (Factory Tuned Only) Bandwidth (20 dB down) < 0.020% of Center Freq. Frequency Tolerance: N/A (Nominal +/- 2 MHz) Frequency Stability: N/A (Nominal +/- 2 MHz) Transmitter Spurious at 3 meters: 610 uV/Mtr (- 0.1 dB below limit) (Worst Harmonic) Frequency: 1908 MHz Momentary Operation (Yes/No) Yes Holdover time after manual release: 0.0 seconds Duration of transmission after activation: 10 seconds maximum on any single manual activation Attestation: The radio apparatus identified in the application has been subject to all the applicable test conditions specified in FCC Rules Part 15 and all of the requirements of the Standard have been met. Regulatory Compliance Engineer John W. Kuivinen, P.E. ___________________________ Date: April 9, 2004 LINEAR LLC FCC ID: EF4 DNT00089 Radio Standard Specification Low Power Communication Devices C63.4-2001 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: Two 2032 - 3 volt lithium batteries Test Equipment List See Section 6 Signal Detector: Peak with 15.6 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 position modulated A1D signal. 5.1 Reference Standard: C63.4-2001 (FCC Procedure) 5.2 Modulation: Pulse Position 20K0 A1D, AM Modulation 5.3 Type of Antenna: Integral to Transmitter Case - Tuned Loop 5.4 External Controls: Push Button No user serviceable parts, except for battery changing. 5.5 Accessories: NONE 5.6 TX Bandwidth: <0.020 % (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 LLC FCC ID: EF4 DNT00089 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) Field Strengths: Table 1 318 MHz = 6167 uV/Mtr maximum at 3 meters. 6.1(c) Bandwidth (20 dB down) <0.020 % Complies 6.1(d) Frequency Stability N/A per regulations +/- 2 MHz L/C Based Oscillator 6.1(e) Reduced Field Strength N/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 (15.6 dB Peak/Average) See Section 8 6.6 Wireline Conducted Emissions: N/A 7.0 Receivers N/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, C63.4-2001 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 LLC FCC ID: EF4 DNT00089 REPORT OF MEASUREMENTS LINEAR LLC FCC ID: EF4 DNT00089 Model: MCT-3 Remote Control Transmitter The enclosed documents reflect the requirements contained generally within the code of Federal Regulations, Title 47, Parts 2 and 15 as most recently published October 1, 2003 and all other applicable revisions made by the Commission since that time. The specific rule sections for which the enclosed documents demonstrate compliance or rely upon to demonstrate compliance with the Commission's application and technical standards are as follows: 15.201-15.207, 15.231, Subpart C, Intentional Radiators. Test Procedure C63.4-2001, Section 13, Measurement of Intentional Radiators was used for the testing of this device. In accord with Section 2.948 of the Commission's Rules, a Test Site submittal is on file with the commission and a Letter of Acceptance dated March 19, 2004 (File 90767) is a portion of the Commission's records. All of the information contained within this documentation is true, correct, and complete to the best of my knowledge. ____________________________ __ April 9, 2004 _ John W. Kuivinen, P.E. Date Regulatory Compliance Engineer LINEAR LLC FCC ID: EF4 DNT00089 DURATION OF RF TRANSMISSIONS MCT-3 EMERGENCY REPORTING TRANSMITTER This transmitter is manually activated. It is used only for remote control signals of a garage door operator. As such, it may be operated continuously by the user (FCC Rules 15.231(a)(4)). However, due to battery constraints and an accidental continuous activation causing interference to the system, the maximum manually activated transmission for a single press of a pushbutton is 10 seconds. When the push button is released the transmitter ceases transmitting immediately. FCC Rules 15.231 (a)(1) allows no longer than 5 seconds upon the release of a manually activated transmitter. Signed: John W. Kuivinen, P.E. Regulatory Compliance Engineer LINEAR LLC FCC ID: EF4 DNT00089 TESTING INSTRUMENTATION AND EQUIPMENT LIST SPECTRUM ANALYZERS: H.P. HP8562A 1KHz to 22GHz S/N 2913A03742 Calibrated 02/04 Due 02/05 ANTENNAS: (2) Ailtech DM105A T1 20-200 MHz Tuned Dipole S/N 93412-105 and 93412-114 Calibrated 3/04 Due: 3/05 (2) Ailtech DM105A T2 140-400 MHz Tuned Dipole S/N 93413-113 and 93413-117 Calibrated 3/04 Due: 3/05 (2) Ailtech DM105A T3 400-1000 MHz Tuned Dipole S/N 93413-105 and 93414-111 Calibrated 3/04 Due 3/05 (2) AH Systems SAS-200/511 1-12.4 GHz Log Periodic S/N 118 and 124, P/Ns 2069 (1) AH Systems SAS-200/540 20-330 MHz Biconical S/N 367 P/N 2052 IN…

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LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089 PULSE DURATION, SINGLE PULSE TIME ONE MILLISECOND DATA PULSES LINEAR LLC FCC ID: EF4 DNT00089 T -0 T=147 mS ONE COMPLETE DATA WORD, MEGACODE FORMAT LINEAR LLC FCC ID: EF4 DNT00089 Single Data Pulses, 1 mSec. pulses in a 6 mSec. data window. MCT-3 Transmitter, Data Stream recorded from a storage oscilloscope onto a floppy disk. Nominal 6 mSec. data window, with 1 mSec. pulses

LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089 LINEAR LLC FCC ID: EF4 DNT00089