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    							OPERATING INSTRUCTIONS FOR YOUR
    40 CHANNEL
    CITIZENS BAND 
    2-WAYMOBILE RADIO
    Model21 LTD STCobra Electronics Corporation
    6500 W. Cortland Street
    Chicago, IL 60707
    PRINTED IN HONG KONG©COBRAELECTRONICS CORP. 1997480-221-P-00121LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 1 
    						
    							The Citizens Band lies between the shortwave broadcast and 10-meter Amateur
    radio bands, and was established by law in 1949. The Class D two-way commu-
    nications service was opened in 1959. (CB also includes a Class Acitizens band
    and Class C remote control frequencies.)
    FCC regulations permit only “transmissions” (one party to another) rather than
    “broadcasts” (to a wide audience). Thus, advertising is not allowed on CB
    Channels because that is “broadcasting.”
    “Cuts Static coming in, adds Punch going out!”
    Cobra proudly introduces the first Patent Pending technology that dramatically
    improves the transmission and reception of CB radio signals.
    This revolutionary system re c o n f i g u res the transmission signal which allows it to
    be transferred more effectively through cluttered airwaves. It literally “punches”
    your message through the hundreds of thousands of signals that are in the air. A t
    the same time, S o u n d Tracker system dynamically adjusts the relationship between
    the signal and static commonly re f e r red to as noise. This allows Cobra’s
    S o u n d Tr a c k e rsystem to significantly reduce the amount of static on all incoming
    CB signals. The system can be further optimized when two SoundTracker CB’s are
    used to talk to each other.
    The end result is a clearer, cleaner sounding reception of signals and more
    powerful transmissions which dramaticallyimprove CB CommunicationsAll transmitter adjustments other than those supplied by the manufacture r
    as front panel operating controls, must be made by, or under the supervision
    of, the holder of an FCC-issued general Radio-Telephone Operator’s License.
    Replacement or substitution of transistors, regular diodes or other parts of
    a unique nature, with parts other than those recommended by Cobra, may
    cause violation of the technical regulations of Part 95 of the FCC Rules, or
    violation of Type Acceptance requirements of Part 2 of the Rules.
    You should read and understand Part 95 (included with this unit) of the
    FCC Rules and Regulations, before operating your Cobra radio, even
    though the FCC no longer requires you to obtain an operators license.The CB Story
    1 How To Use Your
    Citizens Band 
    2-Way Mobile Radio
    Model 21 LTD ST
    ContentsPage
    The CB Story............................................................................................1
    SoundTracker System............................................................................1
    Specifications........................................................................................2,3
    Installation
    Location..................................................................................................4
    Mounting Connections....................................................................4, 5
    CB Antenna..........................................................................................6
    Ignition Noise Interference................................................................7
    In House Operation..............................................................................7
    Operation
    Controls and Indicators............................................................8, 9, 10
    Operating Procedure to Receive......................................................11
    Operating Procedure to Transmit....................................................12
    How SoundTracker Works................................................................13
    Maintenance and Adjustment............................................................14
    Appendix
    Ten Code..............................................................................................15
    AFew Rules That Should Be Obeyed............................................16
    How Your CB Can Serve You..........................................................16
    Warranty Service Instructions............................................................17
    Limited Two Year Warranty................................................................18
    Accessories..................................................................Inside Back Cover21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 3 
    						
    							Specifications (cont.)
    GENERAL
    Channels40 
    Frequency Range26.965 to 27.405 MHz.
    Frequency ControlPhase Lock Loop (PLL) synthesizer.
    Frequency Tolerance0.005%.
    Operating Temperature Range-30° C to + 50° C.
    MicrophonePlug-in dynamic.
    Input Voltage13.8VDC nom.(positive or negative ground).
    Current DrainTransmit:AM full mod., 1.5A(maximum)
    Receive: Squelched, 0.3A; full audio output, 1.2A
    (nominal).
    Size53
    /
    4” W  x 1 3
    /
    4” H  x 7 1
    /
    2” D .
    Weight1.2 lbs.
    Antenna ConnectorUHF, SO-239.
    Semiconductors26 transistors, 26 diodes, 4 integrated  circuits.
    Meter Illuminated; indicates relative power output and
    received signal strength.
    TRANSMITTER
    Power Output4 watts. 
    ModulationAM (Amplitude Modulation).
    Frequency Response300 to 3000 Hz.
    Output Impedance50 ohms, unbalanced.
    RECEIVER
    SensitivityLess than 1 µV for 10dB (S+N)/N.
    Selectivity6dB @ 7 KHz, 60 dB @ 10 KHz. 
    Image Rejection 80 dB, typical.
    Adjacent-Channel Rejection60 dB, typical.
    IF FrequenciesDouble Conversion: 1st: 10.695 MHz.
    2nd: 455 KHz.
    Automatic Gain Control (AGC)Less than 10 dB change in audio output for inputs
    from 10 to 50,000 microvolts.
    RF Gain ControlAdjustable for optimum signal reception.
    Noise BlankerRF type.
    SquelchAdjustable; threshold less than 1µV.
    Audio Output Power4 watts.
    Frequency Response300 to 3000 Hz.
    DistortionLess than 7% @ 3 watts @ 1000 Hz.
    Built-in Speaker16 ohms, round.
    External Speaker (Not Supplied)8 ohms; disables internal speaker when connected.
    PASYSTEM
    Power Output4 watts into external speaker.
    External Speaker for PA8 ohms, when PA-CB switch is in PA, the PAspeaker
    (Not Supplied)also monitors the receiver; separate jack provided. 
    (SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
    3FREQUENCYRANGE
    The COBRA21 LTD ST transceiver represents one of the most advanced AM two-
    way radios ever designed for use as a Class D station in the Citizens Radio
    Service. This unit features advanced Phase Lock Loop (PLL) circuitry providing
    complete coverage of all 40 channels as shown below.
    ChannelChannel FrequencyChannelChannel Frequencyin MHzin MHz
    126.9652127.215
    226.9752227.225
    326.9852327.255
    427.0052427.235527.0152527.245
    627.0252627.265
    727.0352727.275
    827.0552827.285
    927.0652927.2951027.0753027.305
    1127.0853127.315
    1227.1053227.325
    1327.1153327.335
    1427.1253427.3451527.1353527.355
    1627.1553627.365
    1727.1653727.375
    1827.1753827.385
    1927.1853927.3952027.2054027.405
    The COBRA21 LTD ST has a vastly superior receiver which includes noise blanker
    c i rcuitry and an automatic noise limiter. The receiver also features increased 
    p rotection against cross modulation and strong adjacent channel signals.
    To obtain maximum performance please read carefully the descriptions and 
    operating instructions in this manual. Fill out below; keep for your records.Serial No.Date of PurchaseDealer Name
    Keep this manual for detailed information about your Cobra CB radio.
    SAVE YOUR SALES RECEIPT, CARTON AND PACKING FOR POSSIBLE
    FUTURE  USE.
    2Specifications21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 5 
    						
    							5Installation (Cont.)
    3.Connect the antenna cable plug to the standard receptacle on the unit. Most
    CB antennas are terminated with a type PL-259 plug which mates with the
    receptacle marked ANT.
    4.Connect the red lead of DC power cord to +13.8 VDC. In automobile instal-
    lations, +13.8 VDC is usually obtained from the accessory contact in the fuse
    box. This prevents the set being left on accidentally and also permits oper-
    ating the unit without the vehicles engine running.
    Before installing the CB radio, visually check the vehicle battery connec-
    tions to determine which battery terminal, positive or negative (positive is
    the larger of the two) is grounded to the engine block (or chassis).
    5.Connect the black lead to the negative side of the automobile. This is usuallythe chassis of the car.Any convenient location with good electrical contact
    (remove paint) may be used. Plug power cable into jack on back of transceiver.In positive ground automobiles the red wire goes to the chassis and the
    black wire is connected to the ignition switch.
    6.Mount microphone bracket on right side of the transceiver, or near it using
    two screws supplied. When mounting in an automobile, place the bracket
    under the dash so the microphone is readily accessible.Installation
    Location
    Plan the location of the transceiver and microphone bracket before starting the 
    installation. Select a location that is convenient for operation and does not inter-
    fere with the driver or passengers in the vehicle. In automobiles, the transceiver
    is usually mounted to the underneath of the dash panel, with the microphone
    bracket beside it.
    Mounting and Connection
    The transceiver is held in the universal mounting bracket by two thumbscrews,
    permitting adjustment at the most convenient angle.
    Auniversal mounting bracket is supplied along with self tapping screws and star
    washers. The mounting must be mechanically strong and also provide a good
    electrical connection to the chassis of the vehicle. To mount the transceiver:
    1.Determine the most convenient location in your vehicle, hold the COBRA
    radio with mounting bracket in the exact location desired. If nothing 
    will interfere with mounting it in the desired position, remove the 
    mounting bracket and use it as a template to mark the location for the
    mounting screws.
    2.Drill necessary holes and secure mounting bracket in location.
    421LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 7 
    						
    							7 Installation (Cont.)
    Ignition Noise Interference
    Use of a mobile receiver at low signal levels is normally limited by the presence
    of electrical noise. The primary source of noise in automobile installations is fromthe alternator and ignition system in the vehicle. Under most operating conditions,when signal level is adequate, the background noise does not present a serious
    problem. Also, when extremely low level signals are being received, the transceivermay be operated with vehicle engine turned off. The unit requires very little 
    current and therefore will not significantly discharge the vehicle battery.
    Even though the COBRA21 LTD ST has an automatic noise limiter, in some instal-
    lations ignition interference may be high enough to make good communications
    impossible. The electrical noise may come from several sources. Many possibili-
    ties exist and variations between vehicles require different solutions to reduce the
    noise. Consult your COBRAdealer or a 2-way radio technician for help in locat-
    ing and correcting the source of severe noise.
    Base Station Operation (Operation from 120VAC, House Current)
    To operate your transceiver from your home or office, using the regular house
    current as the power source, you will require a 12 VDC power pack that has been
    specially designed for the purpose. It is available as optional equipment from
    your COBRAdealer. It consists of a 120-volt, 60 Hz AC to 12-volt DC power con-
    verter that delivers the required power for the operation of the transceiver. Simply
    connect the red (+) and black ( - ) leads of the transceiver to the corresponding 
    terminals of the power packs.
    DO NOT ATTEMPT TO OPERATE THIS TRANSCEIVER BY
    CONNECTING DIRECTLY TO 120 VAC.
    Temporary Mobile Operation
    To operate your COBRAtransceiver from a car on a temporary basis, you may
    want to purchase an optional cigar lighter adapter from your COBRAdealer. This
    adapter and a magnetic mount antenna allow you to quickly install your trans-
    ceiver for temporary use.6 CB Antenna
    Since the maximum allowable power output of the transmitter is limited by the
    FCC, the antenna is one important factor  affecting transmission distance. Only a
    properly matched antenna system will allow maximum power transfer from the
    50 ohm transmission line to the radiating element. In mobile installations (cars,
    trucks, boats, etc.), an antenna system that is non-directional should be used.
    Avertically polarized, quarter-wavelength whip antenna provides the most reli-
    able operation and greatest range. Shorter, loaded-type whip antennas are more
    attractive, compact and adequate for applications where the maximum possible
    distance is not required. Also, the loaded whips do not present the problems of
    height imposed by a full quarter-wavelength whip.
    Mobile whip antennas utilize the metal body of the vehicle as a ground plane.
    When mounted at a corner of the vehicle they are slightly directional, in the direc-
    tion of the body of the vehicle. For all practical purposes, however, the radiation
    pattern is nondirectional. The slight directional characteristic will be observed
    only at extreme distances. Astandard antenna connector (type SO-239)is providedon the transceiver for easy connection to a standard PL259 cable termination.
    Cobra loaded type antenna models are highly recommended for most installa-
    tions. Consult your Cobra dealer for further details, or call 773-889-3087 and
    speak to a Cobra customer representative.
    When installed in a boat, the transceiver will not operate at maximum eff i c i e n c y
    without a ground plate, unless the vessel has a steel hull. Before installing the trans-
    ceiver in a boat, consult your dealer for information re g a rding an adequate gro u n d-
    ing system and prevention of electrolysis between fittings in the hull and water.
    3-Way Combination Antennas are available which allow operation of all three
    bands (AM-FM & CB), using a single antenna. However, use of this type of
    antenna usually results in less than normal transmit and receive range when
    compared to a standard-type Single Band antenna designed for CB only. The
    quality of reception of radio signals is highly dependent on the antenna sys-
    tem. Call 773-889-3087 for further information.Installation (Cont.)21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 9 
    						
    							Operation (Cont.)
    9 6.RX/TX LEDINDICATOR.When your radio is in the CB receive mode,
    the LED will be green. When in transmit mode, the LED will be red.
    7.LED CHANNELDISPLAY.The selected channel will be displayed. 
    8.CB-PASWITCH:Selects the mode of operation. In the CB position, the
    PAfunction is disabled and the unit will transmit and receive on the
    selected frequency.The PAfunction should not be used unless a PAspeaker is
    connected. NOTE: ANL(Automatic Noise Limiter) is a non-switchable
    feature that is always on to reduce background noise.
    9.S-METER. Swings proportionally to the strength of the incoming signal
    during re c e i v i n g .
    RF-METER. Swings proportionally to the RF output power while 
    transmitting.
    10.SOUNDTRACKER™ INDICATOR.Ared LED will illuminate when the
    SoundTracker system is engaged on your CB.
    11.SOUNDTRACKER™ SWITCH.Depressing this button turns on the
    SoundTracker system in your CB. Controls and Indicators
    Refer to controls, indicators and connectors as illustrated below:
    A. Front Panel
    1.MICROPHONE CONNECTOR.Front panel microphone connector.
    2.OFF/ON/VOLUME.Turn clockwise to turn power on and set the desired
    listening volume.
    3.SQUELCH.This control is used to cut off or eliminate receiver back-
    ground noise in the absence of an incoming signal. For maximum receiversensitivity it is desired that the control be adjusted only to the point
    where the receiver background noise or ambient background noise is
    eliminated. Adjust until the receiver noise disappears. This will require
    the incoming signal to be slightly stronger than the average receiver
    noise. Further clockwise rotation will increase the threshold level which
    a signal must overcome in order to be heard. Only strong signals will be
    heard at a maximum clockwise setting.
    4.RF GAIN.Adjust as required to optimize signal. This control is used 
    primarily to optimize reception in strong signal areas. Gain is reduced by
    counterclockwise rotation of the control. 
    5.CHANNELSELECTOR SWITCH.This switch selects any one of forty
    Citizens Band channels desired. The selected channel is indicated by the
    LED readout, directly above the channel selector knob.Operation
    8117123459610821LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 11 
    						
    							11 Operating Procedure to Receive
    1.Be sure that the power cord, antenna and microphone  are connected to the
    proper connectors before proceeding further. The PA/CB  should be in the
    CB position.
    2.Turn the radio ON by rotating the VOLUME CONTROLclockwise.
    3.Set the RF GAIN CONTROLfully clockwise.
    4.Set DELTA-TUNE CONTROLto center(click-stop) position.
    5.Rotate SQUELCH CONTROLc o u n t e rclockwise until incoming signal is heard .6.Set the CHANNELSELECTORSwitch to the desired channel.
    7.Set VOLUME CONTROLto a comfortable listening level.
    8.Engage the SoundTracker system by depressing the button labeled ST.
    Listen to the background noise from the speaker. Turn the SQUELCH CON-
    TROLslowly clockwise until the noise JUSTdisappears (no signal should be
    present). Leave the control at this setting. The squelch is now properly adjust-
    ed. The receiver will remain quiet until a signal is actually received. Do not
    advance the control too far, or some of the weaker signals will not be heard.
    The revolutionary SoundTracker system allows you to reduce unwanted
    background noise (static) and increase the signal for better reception.1234B. Press-To-Talk Microphone
    Both the receiver and transmitter are controlled by the Press-to-Talk switch on the
    microphone. Press the switch and the transmitter is activated; release the switch
    to receive. When transmitting, hold the microphone two inches from the mouth
    and speak clearly in a normal voice. The microphone provided with your radio is
    a detachable low-impedance dynamic type.Operation (Cont.)Operation (Cont.)
    10 C. Rear Panel
    1.PUBLIC ADDRESS:An external 8-ohm 4.0 watt PAspeaker may be con-
    nected to the PASpeaker Jack when this unit is used as a public address
    system. The speaker should be directed away from the microphone to
    prevent acoustic feed-back. Physical separation or isolation of the micro-
    phone and speaker must be employed when operating the PAat high 
    output levels.
    2.EXTERNALSPEAKER:The External Speaker Jack is used for remote
    receiver monitoring. The external speaker should have 8-ohm impedance
    and be rated to handle at least 4.0 watts. When the external speaker is
    plugged in, the internal speaker is automatically disconnected.
    3.ANTENNACONNECTOR:This SO-239 connector permits connection
    of the transmission line cable PL-259 connector to the transceiver.
    4.
    POWER. This jack permits connection of the DC power to the transceiver.Apower cord with polarized plug is supplied with the radio. The polar-
    ized plug ensures that the power will always be connected properly.21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 13 
    						
    							13 12 Operation (Cont.)
    Operating Procedure to Transmit
    1.Be sure the operator has read and understands part 95, F.C.C. Rules and
    Regulations prior to operating the transmitter.
    2.Select the desired channel.
    3.Set the DYNAMIKE control fully clockwise.
    4.The receiver and transmitter are controlled by the press-to-talk switchon the
    microphone. Press the switch and the transmitter is activated; release switch
    to receive. When transmitting (on a clear channel), hold the microphone two
    inches from the mouth and speak clearly in a normal voice.
    Be sure the antenna is properly connected to the radio before transmitting.
    Prolonged transmitting without an antenna, or a poorly matched antenna,
    could cause damage to the transmitter.
    Operating Procedure for Public Address
    1.Connect a PAspeaker to the PAjack provided on the rear panel.
    2.Place PA/CB/ANLswitch into the PAposition.
    3.Depress push-to-talk switch on mic—speak in normal voice.
    4.Adjust PAspeaker volume with front panel DYNAMIKE control.
    When the Volume control is rotated clockwise, activity on the CB channel will
    be heard through the PAspeaker.SOUNDTRACKER SYSTEM
    While previous systems only “blanked out” or limited noise in higher sound
    frequencies, the revolutionary new SoundTracker System actually reduces noise
    while leaving the signal intact in the reception mode. In the transmission mode,
    it actually strengthens the signal, providing you with a significant reduction in
    noise on reception and transmission.
    Sound clarity is measured by the ratio of the signal level to the noise
    level. The higher the signal-to-noise ratio, the better the sound.
    HOW SOUNDTRACKER WORKSOn Reception–“Cuts Noise Coming In”With a normal CB, distant signals fall below the squelch level and are unintelli-
    gible. With a SoundTracker CB, the noise level is cut by up to 90%, which
    increases the signal-to-noise ratio and dramatically improves signal clarity. This
    also allows you to significantly reduce the squelch level, which greatly expands
    your listening range.
    On Tr a n s m i s s i o n –“ S t rengthens Signals Going Out”ASoundTracker CB strengthens the transmit signal by more effectively using
    the available RF power output of the CB. The result is improved transmission
    signal clarity and an expanded transmission range.How SoundTracker Works21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 15 
    						
    							1415The COBRACB transceiver is specifically designed for the environment encoun-
    tered in mobile installations. The use of all solid state circuitry and its light weight
    result in high reliability. Should a failure occur, however, review the following,
    then if necessary, replace parts only with identical parts. Do not substitute. Refer
    to the schematic diagram and parts. 
    1.Check connections to the source of power and make sure it is the 13.8 VDC
    required to operate your radio.
    2.Check the fuse in the DC power cord. The main power lead (red wire) has a
    2Amp 3AG type fuse in its holder. Use only the above specified type and
    size fuse for maximum protection. Failure to do so, will void the warranty.
    3.Make certain the microphone is properly plugged in.
    4.Make certain the antenna is properly connected and tuned for minimum
    SWR. NOTE:COBRAantennas include full instructions as to how to tune
    your antenna. If youre still in doubt about the procedure, contact the
    COBRAdealer from whom you purchased your radio and antenna, for
    advice. If you hired an installer to install your radio and antenna, contact the
    installer.
    If you are unable to correct the problem, refer the WARRANTYSERVICE
    INSTRUCTIONS at the end of this manual for the correct procedure for warranty
    and post-warranty service from COBRA.
    Adjustment Warning
    Replacement or substitution of certain parts with replacements other than those
    recommended by COBRA, may be a violation of the technical regulations of Part
    95 of the FCC Rules, or of Type Acceptance requirements of Part 2 of said rules.
    When making adjustments other than transmitter adjustments, be sure to re-read
    applicable portions of this instruction manual to make certain you are following
    correct procedure and that the radio was properly installed, etc.For technical assistance, please call our Automated Help Desk 
    which can assist you by answering the most 
    frequently asked questions about Cobra products.
    (773) 889-3087
    24 hours a day, 7 days a week.
    AConsumer Service Representative can be reached through this same
    number 8:00 am - 8:00 pm, Monday through Friday, CST.
    Technical assistance is also available on-line in the Frequently Asked
    Question (FAQ) section at www.cobraelec.com or by e-mail 
    to [email protected] Maintenance and AdjustmentAppendix
    Citizens Band radio operators have largely adopted the “10-code” for standard
    questions and answers. Its use permits faster communications and better under-
    standing in noisy areas. The following table lists some of the more common codes
    and their meanings:
    CodeMeaningCodeMeaning
    10-1Receiving poorly10-35Confidential information
    10-2Receiving well10-36Correct time is
    10-3Stop transmitting10-37Wrecker needed at
    10-4OK, message received10-38Ambulance needed at
    10-5Relay message10-39Your message delivered
    10-6Busy, stand by10-41Please turn to channel
    10-7Out of service, leaving air10-42Traffic accident at
    10-8In service, subject to call10-43Traffic Tie up at
    10-9Repeat message10-44I have a message for you
    10-10Transmission completed,10-45All units within range 
    standing byplease report
    10-11Talking too rapidly10-50Break channel
    10-12Visitors present10-60What is next message number?10-13Advise Weather/Road10-62Unable to copy, use phone
    conditions10-63Net directed to
    10-16Make pick up at10-64Net clear
    10-17Urgent business10-65Awaiting your next 
    10-18Anything for us?message/assignment
    10-19Nothing for you, return10-67All units copy
    to base10-70Fire at
    10-20My location is10-71Proceed with transmission
    10-21Call by telephonein sequence
    10-22Report in person to10-77Negative contact
    10-23Stand by10-81Reserve hotel room for
    10-24Completed last assignment10-82Reserve room for
    10-25Can you contact10-84My telephone number is
    10-26Disregard last information10-85My address is
    10-27I am moving to channel10-91Talk closer to mike
    10-28Identify your station10-93Check my frequency on 
    10-29Time is up for contactthis channel
    10-30Does not conform to FCC rules10-94Please give me a long count
    10-32I will give you a radio check10-99Mission completed, all 
    10-33EMERGENCYTRAFFICunits secure
    10-34Trouble at this station10-200Police needed at21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 17 
    						
    							Appendix (Cont.)
    AFew Rules That Should Be Obeyed
    1.You are not allowed to carry on a conversation with another station for more
    than five minutes at a time without taking a one-minute break to give others
    a chance to use the channel.
    2.You are not allowed to blast others off the air by overpowering them with
    illegally amplified transmitter power or illegally high antennas.
    3.You can’t use the CB to promote illegal activities.
    4.You are not allowed to use profanity.
    5.You may not play music in your CB.
    6.You may not use your CB to sell merchandise or professional service.
    How Your CB Can Serve You
    •Warn of traffic tie ups ahead.
    •Provide weather and road information.
    •Provide help fast in event of emergency or breakdown.
    •Suggest good spots to eat and sleep.
    •Make long trips more interesting, and help keep you awake.
    •Provide direct contact with your office or home.
    •Make friends for you as you travel.
    •Provide “local information” to find you destination.
    •Help law enforcement officers by reporting drunk and reckless drivers.
    17 16If You Think You Need Service For technical assistance, please call our Automated Help Desk 
    which can assist you by answering the most 
    frequently asked questions about Cobra products.
    (773) 889-3087
    24 hours a day, 7 days a week.
    AConsumer Service Representative can be reached through this same
    number 8:00 am - 8:00 pm, Monday through Friday, CST.
    Technical assistance is also available on-line in the Frequently Asked
    Question (FAQ) section at www.cobraelec.com or by e-mail 
    to [email protected] If You Think You Need Service, Call 773-889-3087
    “If your product should require factory service please call Cobra
    first before sending your unit in. This will ensure the fastest
    turnaround time on your repair.”
    You may be asked to send your unit to the Cobra factory. It will be necessary to
    furnish the following, in order to have the product serviced and returned.
    1.For Warranty Repair, include some form of proof-of-purchase, such as a 
    mechanical reproduction or carbon or a sales receipt. If you send the 
    original receipt it cannot be returned.
    2 .Send the entire product. Must include CB unit and microphone. 
    3 .Enclose a description of what is happening with the unit. Include a typed or
    clearly printed name and address of where the unit is to be re t u r n e d .
    4 .Pack unit securely to prevent damage in transit. If possible, use the original
    packing material.
    5 .Ship prepaid and insured by way of a traceable carrier (to avoid loss intransit) such as United Parcel Service (UPS), Roadway Parcel Service (RPS)or First Class Insured Mailto Cobra Factory Service, Cobra Electronics
    Corporation, 6500 W. Cortland St., Chicago, IL60707. Cobra is not respon-
    sible for units not received if package has not been properly insured.
    6 .
    If the unit is in warranty, upon receipt of your unit it will either be repaired or
    exchanged depending on the model. Please allow approximately 3 to 4 weeks
    before contacting us for status. If the unit is out of warranty a letter will auto-
    matically be sent informing you of the repair charge or replacement charge. If
    you have any questions, please call 773-889-3087 for assistance.21LTDST.MANUAL.REV.QX  9/25/98 10:59 AM  Page 19 
    						
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