BBOPR255FRS/GMRS TRANSCEIVER

English Introduction © 2005 Cobra Electronics Corporation 6500 W est Cortland Street Chicago, Illinois 60707 USA www.cobra.com Making Life Easier and Safer Staying in touch with your family and friends is convenient and easy when using your microTALK ® radio. Some of the many uses you will discover include: Communicating with others while hiking, biking, and working; keeping track of family and friends at a crowded public event; checking with travel companions in another car; talking with neighbors; arranging meeting spots with others while shopping at the mall. Secure your microTALK ® radio while on the go. Carrying your microTALK ® radio with you is easy when using the belt clip or optional wrist strap. The belt clip easily attaches to your belt, purse, or backpack. Simply squeeze the clip and place it where you prefer. For Assistance in the U.S.A. In this user’s manual, you should find all the information you need to operate your microTALK ® radio. If you require further assistance after reading this manual, Cobra Electronics offers the following customer assistance services: Automated Help Desk English only. 24 hours a day, 7 days a week 773-889-3087 (phone). Customer Assistance Operators English and Spanish. 8:00 a.m. to 6:00 p.m. Central Time, Monday through Friday (except holidays) 773-889-3087 (phone). Questions English and Spanish. Faxes can be received at 773-622-2269 (fax). Technical Assistance English only. www.cobra.com (on-line: Frequently Asked Questions). English and Spanish. productinfo @cobra.com (e-mail). For Assistance Outside the U.S.A. Contact Your Local Dealer Belt Clip Customer Assistance A1 Owner’s Manual NothingComes Close to a Cobra ® English TWO-WAY RADIO MODEL PR 650 WX Printed in the Philippines Part No. 480-246-P Version A The Cobra line of quality products includes: CB Radios • microTALK ® Radios • Radar/Laser Detectors • Safety Alert ® Traffic Warning Systems • Handheld GPS Receivers • Mobile GPS Navigation Systems • HighGear ® Accessories • CobraMarine™ VHF Radios • Marine Chartplotters • Power Inverters • Accessories NothingComes Close to a Cobra ® English For more information or to order any of our products, please visit our website: www.cobra.com Wrist Strap 17 Nothing Comes Close to a Cobra ® English Product Features A3 Introduction Backlit LCD Display Receive/ Transmit Icon Low Power Icon Roger Beep Icon Battery Low Indicator Lock Icon Power Saver Icon Channel Numbers CTCSS Privacy Code Numbers Features •22 Channels Seven shared with FRS/GMRS, seven FRS only, eight GMRS only. • 38 Privacy Codes •10 Channel NOAA All Hazards Radio •Hands-Free Operation (VOX) •Scan Channel, privacy code • Backlit LCD Display •Call Alert Five selectable tones • Button Lock •Speaker/ Microphone/ Charge Jack •Roger Beep Selectable On/Off • Battery/Power Saver •Keystroke Tones •Auto Squelch •Maximum Range Extender •Belt Clip Important FCC Licensing Information This radio operates on General Mobile Radio Service (GMRS) frequencies which require a F eder al Comm unications Commission (FCC) license. See page 15 for licensing and other related information. Maximum range may vary and is based on unobstructed line-of-sight communication under ideal conditions. Battery Compartment Battery Door Latch Belt Clip Wrist Strap Connection English Product Features A2 Introduction Backlit LCD Display Channel Up/Down Buttons Speaker/ Microphone Call Button Antenna Lock Button Volume Up/Down Buttons External Speaker/ Microphone/ Charge Jack Light/ Max Range Button Talk Button Mode/Power Button VOX Icon Limited One-Year Warranty on Radio(s) & Charger • For Products Purchased in the U.S.A. Cobra Electronics Corporation warrants that its Cobra microTALK ® radios and charger, and the component parts thereof, will be free of defects in workmanship and materials for a period of one year from the date of first consumer purchase. This warranty may be enforced by the first consumer purchaser, provided that the product is utilized within the U.S.A. Cobra will, without charge, repair or replace, at its option, defective microTALK ® radios, chargers, products or component parts upon delivery to the Cobra Factory Service department, accompanied by proof of the date of first consumer purchase, such as a duplicated copy of a sales receipt. You must pay any initial shipping charges required to ship the product for warranty service, but the return charges will be at Cobra’s expense, if the product is repaired or replaced under warranty. This warranty gives you specific legal rights, and you may also have other rights which may vary from state to state. Exclusions: This limited warranty does not apply:1) To any product damaged by accident; 2) In the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs; 3) If the serial number has been altered, defaced, or removed; 4) If the owner of the product resides outside the U.S.A. All implied warranties, including warranties of merchantability and fitness for a particular purpose are limited in duration to the length of this warranty. Cobra shall not be liable for any incidental, consequential or other damages; including, without limitation, damages resulting from loss of use or cost of installation. Some states do not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations may not apply to you. For Products Purchased Outside the U.S.A. Please contact your local dealer for warranty information. 90-Day Warranty on GA-3ANC Rechargeable Batteries For products purchased in the U.S.A. and Canada. Trademark Acknowledgement • Cobra ® , microTALK ® , Nothing Comes Close to a Cobra ® , VibrAlert ® and the snake design are registered trademarks of Cobra Electronics Corporation, USA. Cobra Electronics Corporation™ is a trademark of Cobra Electronics Corporation, USA. Warranty and Trademark Acknowledgement Warranty Scan Icon NOA…

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30 September, 2005 Equipment Authorization Division Office of Engineering and Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Ref: FCC ID: BBOPR255 Request for Confidentiality Dear Sirs: With regard to the referenced application, Cobra Electronics Corporation, is requesting confidentiality of certain sections of the accompanying documents. The documents for which Cobra Electronics Corporation is requesting confidentiality are: Schematic Diagram Block Diagram Operational Descriptions 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, Robert Mudra Engineering Manager

FCC ID: BBOPR255 MODEL #: PR255 EXTERNAL PHOTOS

FCC ID: BBOPR255 MODEL #: PR650 EXTERNAL PHOTOS

FCC ID: BBOPR255 MODEL#: PR255 INTERNAL PHOTOS

FCC ID: BBOPR255 MODEL #: PR650 INTERNAL PHOTOS

9. SEMICONDUCTORS AND FUNCTIONS １) ＴＲＡＮＳＩＳＴＥＲ ＲＥＦ ＮＯ ＴＹＰＥ ＭＡＮＵＦＡＴＵＲＥＲ ＦＵＮＣＴＩＯＮ QV2 2SC5085-Y TOSHIBA VCO BUFFER QR1 2SC5085-Y TOSHIBA RX AMP QR2 2SC5085-Y TOSHIBA RX MIXER QR5 KRC404E K.E.C CTCSS DETECTOR QS3 KRC4075E K.E.C LED CONTROL QS6 KRA305E K.E.C PTT KEY SWITCHING QS7 KRA304E K.E.C MAIN POWER SWITCHING QS8 KRA305E K.E.C INTERNAL MIC B+ CONTROL QV1 2SC5085-Y TOSHIBA OSCILLATOR QV2 KRC404E K.E.C TX/RX SWITCHING QT1 2SC5085-Y TOSHIBA TX BUFFER QT2 2SC5085-Y TOSHIBA TX DRIVE AMP QT3 2SK3656 TOSHIBA TX MAIN AMP ２)ＩＮＴＥＲＧＲＡＴＥＤ ＣＩＲＣＵＩＴ ＲＥＦ ＮＯ ＴＹＰＥ ＭＡＮＵＦＡＴＵＲＥＲ ＦＵＮＣＴＩＯＮ IC1 TMP86PM29AU TOSHIBA CPU IC2 AN29160A PANASONIC PLL,MIXER,IF PROSSING, LPF,HPF LIMITTER,APA, IC5 TK71540 TOKO REGULATOR IC10 IL358 INTERGRAL CALL POWER AMP @ N.E.C : NATIONAL SEMICONDUCTOR @ AUK : AUK CORP. @ ELM : ELM TECHNOLOGY @ K.E.C : KOREA ELECTRONICS CO.,LTD.

8. Alignment instructions WARNING Any repairs or adjustments should be made under the supervision of a qualified radiotelephone technician. TRANSMITTER 1.Power Supply Voltage The Power supply voltage should be set for 6.0VDC measured at the radio during transmit. Periodically check the power supply voltage during the alignment procedure. 2.Frequency Setting A. Connect a frequency counter or Communications Service Monitor to the Antenna through an RF power attenuator (10 watt minimum rating, 20 dB minimum attenuation). B. Depress the PTT switch. C. Adjust the CTX1 trimmer capacitor such that the output frequency is equal to the channel frequency with a maximum error of +/- 200 Hz. D. Release the PTT switch. 3. Output Power Alignment. A. Set the power supply voltage for 6.0VDC. B. Connect a Communications Service Monitor or a wattmeter and dummy load to the antenna connector. C. Depress the PTT switch. D. To be convinced for 1.0(0.5) Watt output power with a maximum error of +/- 0.5(0.4-0.8) Watt. E. Release the PTT switch. 4. Deviation Adjustment. A. Connect an audio generator to the microphone jack JIG. The audio frequency Should be set at 1 KHz. B. Connect an FM deviation meter or Communications Service Monitor to the antenna connector through an RF power attenuator (10 watt minimum rating, 20 dB minimum attenuation). Set the monitor to read peak deviation. C. Depress the PTT switch. D. Adjust the audio generator level 100 mV rms. E. Adjust VR4 for +/- 2.2 KHz maximum deviation. (With CTCSS tone) F. To be convinced +/- 2.0KHz without CTCSS tone.(1.5KHz dev. 20dB up) g. Release the PTT switch. RECEIVER NOTE: Insure that the proper channel has been selected before preceding with the alignment procedure. 1. Power Supply Voltage The proper voltage for testing is 6.0 VDC. 2. Receiver Alignment A. Connect an RF signal generator or Communications Service Monitor to the antenna connector. B. Connect a SINAD meter and oscilloscope across the speaker terminals. C. Set the output level of the RF signal generator for -47 dBm. The generator should be set for +/- 1.5 KHz deviation of a 1 KHz tone. D. Set the audio output level for 0.6 Vrms. by adjusting volume. E. Reduce the output level of the RF signal generator for produce a 6-12 dB SINAD indication.

Applicant: Cobra Electronics Corporation FCC ID: BBOPR255 IC ID: 906B-PR255 Models: PR255, PR256, PR650, PR656 Portable FRS/GMRS PTT Radio Transceiver 462.5500 - 467.7125 MHz 2005 Celltech Labs Inc. This document is not to be reproduced in whole or in part without the prior written permission of Celltech Labs Inc. Page 1 of 44 Test Report Serial No.: 093005BBO-T670-S95U Report Issue Date: Oct. 17, 2005 Date(s) of Evaluation: October 06-07, 2005 Report Rev. No.: Revision 0 Description of Tests: RF Exposure SARFCC §2.1093 IC RSS-102 Test Report Prepared By: Cheri Frangiadakis Test Report Writer Celltech Labs Inc. Test Report Approved By: Jonathan Hughes General Manager Celltech Labs Inc. RF EXPOSURE EVALUATION SPECIFIC ABSORPTION RATE SAR TEST REPORT FOR THE COBRA ELECTRONICS CORPORATION PORTABLE FM UHF FRS/GMRS PTT RADIO TRANSCEIVER MODEL(S): PR255, PR256, PR650, PR656 FCC ID: BBOPR255 IC: 906B-PR255 Test Report Serial Number 093005BBO-T670-S95U Revision 0 Test Report Issue Date October 17, 2005 Test Lab Celltech Compliance Testing & Engineering Lab (Celltech Labs Inc.) 1955 Moss Court Kelowna, BC Canada V1Y 9L3 Applicant: Cobra Electronics Corporation FCC ID: BBOPR255 IC ID: 906B-PR255 Models: PR255, PR256, PR650, PR656 Portable FRS/GMRS PTT Radio Transceiver 462.5500 - 467.7125 MHz 2005 Celltech Labs Inc. This document is not to be reproduced in whole or in part without the prior written permission of Celltech Labs Inc. Page 2 of 44 Test Report Serial No.: 093005BBO-T670-S95U Report Issue Date: Oct. 17, 2005 Date(s) of Evaluation: October 06-07, 2005 Report Rev. No.: Revision 0 Description of Tests: RF Exposure SARFCC §2.1093 IC RSS-102 Celltech Labs Inc. declares under its sole responsibility that this wireless portable device has demonstrated compliance with the Specific Absorption Rate (SAR) RF exposure requirements specified in FCC 47 CFR §2.1093 and Health Canada’s Safety Code 6. The device was tested in accordance with the measurement standards and procedures specified in FCC OET Bulletin 65, Supplement C (Edition 01-01) and Industry Canada RSS-102 Issue 1 (Provisional) for the General Population / Uncontrolled Exposure environment. All measurements were performed in accordance with the SAR system manufacturer recommendations. I attest to the accuracy of data. All measurements were performed by me or were made under my supervision and are correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the qualifications of all persons taking them. This test report shall not be reproduced partially, or in full, without the prior written approval of Celltech Labs Inc. The results and statements contained in this report pertain only to the device(s) evaluated. DECLARATION OF COMPLIANCE SAR RF EXPOSURE EVALUATION Test Lab CELLTECH LABS INC. Testing and Engineering Services 1955 Moss Court Kelowna, B.C. Canada V1Y 9L3 Phone: 250-448-7047 Fax: 250-448-7046 e-mail: [email protected] web site: www.celltechlabs.com Applicant Information COBRA ELECTRONICS CORPORATION 6500 West Cortland Street Chicago, IL 60707 United States FCC IDENTIFIER: BBOPR255 IC IDENTIFER: 906B-PR255 Model(s): PR255, PR256, PR650, PR656 Rule Part(s): FCC 47 CFR §2.1093; IC RSS-102 Issue 1 (Provisional) Test Procedure(s): FCC OET Bulletin 65, Supplement C (Edition 01-01) Device Description: Portable UHF FRS/GMRS PTT Radio Transceiver Modulation Type: FM (UHF) Tx Frequency Range(s): 462.5500 - 462.7250 MHz (GMRS Channels 15-22) 462.5625 - 462.7125 MHz (FRS/GMRS Channels 1-7) 467.5625 - 467.7125 MHz (FRS Channels 8-14) Max. RF Output Power Tested: 1.27 Watts (31.04 dBm) ERP (462.7125 MHz) - GMRS Channel 7 Antenna Type(s) Tested: Fixed Stubby Battery Type(s) Tested: NiMH AAA x4 (1.2 V, 750 mAh) NiCd AAA x4 (1.2 V, 300 mAh) Alkaline Duracell Procell AAA x4 (1.5 V, 1150 mAh) Body-Worn Accessories Tested: Plastic Belt-Clip (6 mm thickness) Audio Accessories Tested: Earbud with Lapel-Microphone (P/N: GA-EBM2) Max. SAR Level(s) Evaluated: 0.612 W/kg (1g) - Face-held (50% duty cycle) 1.32 W/kg (1g) - Body-worn (50% duty cycle) Tested By: Sean Johnston Compliance Technologist Celltech Labs Inc. Reviewed By: Spencer Watson Senior Compliance Technologist Celltech Labs Inc. Applicant: Cobra Electronics Corporation FCC ID: BBOPR255 IC ID: 906B-PR255 Models: PR255, PR256, PR650, PR656 Portable FRS/GMRS PTT Radio Transceiver 462.5500 - 467.7125 MHz 2005 Celltech Labs Inc. This document is not to be reproduced in whole or in part without the prior written permission of Celltech Labs Inc. Page 3 of 44 Test Report Serial No.: 093005BBO-T670-S95U Report Issue Date: Oct. 17, 2005 Date(s) of Evaluation: October 06-07, 2005 Report Rev. No.: Revision 0 Description of Tests: RF Exposure SARFCC §2.1093 IC RSS-102 TABLE OF CONTENTS 1.0 INTRODUCTION __________________________________________________________ 4 2.0 DESCRIPTION OF DEVICE UNDER TEST (DUT) ________________________________ 4 3.0 SAR MEASUREMENT SYSTEM ______________________________________________ 5 4.0 MEASUREMENT SUMMARY ________________________________________________ 6 5.0 DETAILS OF SAR EVALUATION _____________________________________________ 7 6.0 EVALUATION PROCEDURES _______________________________________________ 7 7.0 SYSTEM PERFORMANCE CHECK ___________________________________________ 8 8.0 SIMULATED EQUIVALENT TISSUES__________________________________________ 9 9.0 SAR SAFETY LIMITS _______________________________________________________ 9 10.0 ROBOT SYSTEM SPECIFICATIONS ________________________________________ 10 11.0 PROBE SPECIFICATION (ET3DV6) _________________________________________ 11 12.0 PLANAR PHANTOM _____________________________________________________ 11 13.0 VALIDATION PLANAR PHANTOM __________________________________________ 11 14.0 DEVICE HOLDER _______________________________________________________ 11 15.0 TEST EQUIPMENT LIST __________________________________________________ 12 16.…

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Applicant: Cobra Electronics Corporation FCC ID: BBOPR255 IC ID: 906B-PR255 Models: PR255, PR256, PR650, PR656 Portable FRS/GMRS PTT Radio Transceiver 462.5500 - 467.7125 MHz 2005 Celltech Labs Inc. This document is not to be reproduced in whole or in part without the prior written permission of Celltech Labs Inc. Page 44 of 44 Test Report Serial No.: 093005BBO-T670-S95U Report Issue Date: Oct. 17, 2005 Date(s) of Evaluation: October 06-07, 2005 Report Rev. No.: Revision 0 Description of Tests: RF Exposure SARFCC §2.1093 IC RSS-102 APPENDIX F - PROBE CALIBRATION

TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION Test Report Product Name: TWO WAY RADIO FCC ID: BBOPR255 Applicant: COBRA ELECTRONICS CORPORATION 6500 WEST CORTLAND STREET CHICAGO IL 60707 Date Receipt: 10/3/2005 Date Tested: 10/10/2005 FCC ID: BBOPR255 REPORT #: C\COBRA\2057AUT5\2057AUT5TestReport.doc COVER SHEET TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION TABLE OF CONTENTS LIST TEST REPORT: PAGE 1........GENERAL INFORMATION & TECHNICAL DESCRIPTION PAGE 2........TECHNICAL DESCRIPTION CONTINUED RF POWER OUTPUT PAGE 3........MODULATION CHARACTERISTICS AUDIO FREQUENCY RESPONSE GRAPH PAGE 4........MODULATION LIMITING GRAPH PAGE 5........AUDIO LOW PASS FILTER GRAPH PAGE 6........OCCUPIED BANDWIDTH PAGE 7........OCCUPIED BANDWIDTH PLOT PAGE 8........SPURIOUS EMISSIONS AT ANTENNA TERMINALS PAGE 9........UNWANTED RADIATION – GMRS PAGE 10.......UNWANTED RADIATION - FRS PAGE 11.......FREQUENCY STABILITY PAGE 12.......LIST OF TEST EQUIPMENT EXHIBITS INCLUDED: CONFIDENTIALITY LETTER BLOCK DIAGRAM SCHEMATICS PARTS LIST USERS MANUAL LABEL SAMPLE LABEL LOCATION EXTERNAL PHOTOGRAPHS INTERNAL PHOTOGRAPHS ALIGNMENT PROCEDURE OPERATIONAL DESCRIPTION TEST SET UP PHOTOGRAPHS FCC ID: BBOPR255 REPORT #: C\COBRA\2057AUT5\2057AUT5TestReport.doc TABLE OF CONTENTS TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION GENERAL INFORMATION REQUIRED FOR CERTIFICATION 2.1033(c)(1)(2) COBRA ELECTRONICS CORPORATION will manufacture the FCCID: BBOPR255 GMRS/FRS COMBINATION TRANSCEIVER in quantity, for use under FCC RULES PART 95. COBRA ELECTRONICS CORPORATION 6500 WEST CORTLAND STREET CHICAGO IL 60707 2.1033 (c) TECHNICAL DESCRIPTION 2.1033(c)(3) Instruction book. A draft copy of the instruction manual is included is included in the exhibits. 2.1033(c) (4) Type of Emission: 10K5F3E 95.631 Bn = 2M + 2DK M = 3000 D = 2.25K Bn = 2(3000)+2(2250) = 10.5K GMRS Authorized Bandwidth 20.0 kHz 2.1033(c)(5) GMRS Frequency Range: 1. 462.5500 13. 462.7000 95.621 2. 462.5625 14. 462.7125 3. 462.5750 15. 462.7250 4. 462.5875 16. 467.5500 5. 462.6000 17. 467.5750 6. 462.6125 18. 467.6000 7. 462.6250 19. 467.6250 8. 462.6375 20. 467.6500 9. 462.6500 21. 467.6750 10. 462.6625 22. 467.7000 11. 462.6750 23. 467.7250 12. 462.6875 FRS Authorized Bandwidth 12.5KHz 2.1033(c)(5) FRS Frequency Range: 1. 462.5625 8. 467.5625 95.627 2. 462.5875 9. 467.5875 3. 462.6125 10. 467.6125 4. 462.6375 11. 467.6375 5. 462.6625 12. 467.6625 6. 462.6875 13. 467.6875 7. 462.7125 14. 467.7125 MHz 2.1033(c)(6)(7) Power Output shall not exceed 0.50 Watts effective 95.639 radiated power. There can be no provisions for 95.649 increasing the power or varying the power. FCC ID: BBOPR255 REPORT #: C\COBRA\2057AUT5\2057AUT5TestReport.doc Page 1 of 12 TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION 2.1033(c)(8) DC Voltages and Current into Final Amplifier: FINAL AMPLIFIER ONLY FOR LOW POWER SETTING INPUT POWER: (6.0V)(.37A) = 2.22 Watts FOR HIGH POWER SETTING INPUT POWER: (6.0V)(.53A) =3.18 Watts 2.1033(c)(9) Tune-up procedure. The tune-up procedure is included in the exhibits. 2.1033(c)(10) Complete Circuit Diagrams: The circuit diagram and block diagram are included in the exhibits. 2.1033(c)(11) A photograph or a drawing of the equipment identification label is included in the exhibits. 2.1033(c)(12) Photographs of the equipment of sufficient clarity to reveal equipment construction and layout, including meters, labels for controls, including any view under shields. 2.1033(c)(13) Digital modulation is not allowed. 2.1033(c)(14) The data required by 2.1046 through 2.1057 is submitted below. 2.10311c)(6)(7) RF power is measured by the substitution method as 2.1046(a) outlined in TIA/EIA - 603. With a nominal battery voltage of 6.0 V, and the transmitter properly adjusted the RF output measures: GMRS - 1 Watts * FRS - .5 Watts Note: ERP SAR Measurement is 1 dB greater than Test Report. Measurement is radiated emission: different sample on a different range explains difference. FCC ID: BBOPR255 REPORT #: C\COBRA\2057AUT5\2057AUT5TestReport.doc Page 2 of 12 TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION 2.1047(a)(b) Modulation characteristics: AUDIO FREQUENCY RESPONSE The audio frequency response was measured in ac- cordance with TIA/EIA Specification 603. The audio frequency response curve is shown on the next page. The audio signal was fed into a dummy microphone circuit and into the microphone connector. The input required to produce 30 percent modulation level was measured. See plot below. Audio Frequency Response MaxFre q .a t1 ColorLine StyleThickDataAxis CyanSolid1Anlr.Level A!Norm alizeLeft -4 +6 -2 +0 +2 +4 d B 1003k200300400 5007001k2k Hz FCC ID: BBOPR255 REPORT #: C\COBRA\2057AUT5\2057AUT5TestReport.doc Page 3 of 12 TIMCO ENGINEERING INC. 849 NW State Road 45 Newberry, Florida 32669 http://www.timcoengr.com 888.472.2424 F 352.472.2030 email: [email protected] APPLICANT: COBRA ELECTRONICS CORPORATION 2.1047(b) Audio input versus modulation The audio input level needed for a particular percentage of modulation was measured in accordance with TIA/EIA Specification 603. The audio input curves versus modulation are on the following pages. Curves are provided for audio input frequencies of 300, 1000, and 2500 Hz. See the plot below. Modulation Limiting Plots: 2.5KHz (Green), 1.0KHz (Blue…

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