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Cobra 29 WX Nw ST Manual

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Cobra 29 WX Nw STCobra NightWatch 29 WX NW ST 40-channel CB radio

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Cobra 29 WX NW ST CB Radio Detailed Review


User reviews and opinions

Comments to date: 3. Page 1 of 1. Average Rating:
anand_gupta 8:08pm on Friday, October 29th, 2010 
This is thee CB to own hands down. Features can not be beat. Very handy for many uses. Main use is NOAAH broadcast and person to person when off road. I really love this CB i got it for my 16th birthday and i was so happy. The radio is great--does what it is supposed to--also.
KenV 6:41pm on Friday, September 17th, 2010 
Thinking about getting a new one and while the one I got, I will give to my dad for his truck. Easy to use, very good visibility at night, excellent sound quality.
redmike 9:36pm on Wednesday, April 28th, 2010 
Excellent Mobile CB Radio This is an excellent radio for anyone interested. I have used every function, including the PA, and it performs marvelously. Excellent radio Matched this with a "Little Wil" Wilson antenna. Low SWR across all channels with minimal calibration.

Comments posted on are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.







29 WX ST

Cobra Electronics Corporation 6500 W. Cortland Street Chicago, IL 60707




How To Use Your

The CB Story

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 communications service was opened in 1959. (CB also includes a Class A citizens 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 reconfigures 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. At the same time, SoundTracker system dynamically adjusts the relationship between the signal and static commonly referred to as noise. This allows Cobras SoundTracker system to significantly reduce the amount of static on all incoming CB signals. The system can be further optimized when two SoundTracker CBs are used to talk to each other. The end result is a clearer, cleaner sounding reception of signals and more powerful transmissions which dramatically improve CB Communications
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. Citizens Band (CB) Radio operators are no longer required to obtain an FCC license to operate their CB equipment or provide station identification. Nevertheless, an operator of a CB radio station is still required to comply with the communications act and with the rules of CB Radio Operation.
Citizens Band 2-Way Mobile Radio

Model 29 WX ST

Contents Page The CB Story....1 SoundTracker System...1 What is Weather Radio?..1 Specifications...2,3 Installation Location...4 Mounting Connections...4, 5 CB Antenna...6 Ignition Noise Interference...7 Operation Controls and Indicators..8, 9, 10 Operating Procedure to Receive..11 Operating Procedure to Transmit..11 Operating Procedure to Receive Weatherband..12 How SoundTracker Works...13 Maintenance and Adjustment..14 Appendix Ten Code....15 A Few 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 Cover

What Is Weather Radio?

NOAA WEATHER RADIO (NWR) is a service of the National Oceanic and Atmospheric Administration (NOAA), of the U.S. Department of Commerce. It provides continuous, around-the-clock broadcasts of the latest weather information directly from National Weather Service Offices. The broadcasts are tailored to the weather-information needs of people within the receiving area. For example, coastal and Great Lakes stations provide specialized weather information for area boaters, fishermen and others engaged in marine activities, as well as general weather information for the public-at-large. Three hundred eighty (380) NWR stations are in operation by the U.S. Government in addition to several NWR stations that are maintained by private interest groups. Under the January 1975 White House policy statement, NOAA Weather Radio was designated as the sole Government operated radio system to provide direct warnings into private homes for both natural disasters and nuclear attack. The capability is to supplement warnings by sirens and by commercial radio and television. NWR Frequencies and Transmission Characters NWR broadcasts have been allocated seven frequencies within the VHF radio spectrum reserved for Government use. Assigned frequencies are: 162.400 MHz 162.475 MHz 162.525 MHz 162.425 MHz 162.500 MHz 162.550 MHz 162.450 MHz 1


FREQUENCY RANGE The COBRA 29 WX 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. Channel Channel Frequency in MHz 26.965 26.975 26.985 27.005 27.015 27.025 27.035 27.055 27.065 27.075 27.085 27.105 27.115 27.125 27.135 27.155 27.165 27.175 27.185 27.205 Channel Channel Frequency in MHz 27.215 27.225 27.255 27.235 27.245 27.265 27.275 27.285 27.295 27.305 27.315 27.325 27.335 27.345 27.355 27.365 27.375 27.385 27.395 27.405 GENERAL

Specifications (cont.)

Channels Frequency Range Frequency Control Frequency Tolerance Operating Temperature Range Microphone Input Voltage Current Drain 40 26.965 to 27.405 MHz. Phase Lock Loop (PLL) synthesizer. 0.005%. -30 C to + 50 C. Plug-in dynamic. 13.8VDC nom.(positive or negative ground). Transmit: AM full mod., 1.5A (maximum) Receive: Squelched, 0.3A; full audio output, 1.2A (nominal). 8 5/8 D x 79/32 W x 2 13/64 H. 4 lbs. UHF, SO-239. 26 transistors, 26 diodes, 4 integrated circuits. Illuminated; indicates relative power output and received signal strength. 4 watts. AM (Amplitude Modulation). 300 to 3000 Hz. 50 ohms, unbalanced. Less than 1 V for 10dB (S+N)/N. 6dB @ 7 KHz, 60 dB @ 10 KHz. 80 dB, typical. 60 dB, typical. Double Conversion: 1st: 10.695 MHz. 2nd: 455 KHz. Less than 10 dB change in audio output for inputs from 10 to 50,000 microvolts. Adjustable for optimum signal reception. RF type. Adjustable; threshold less than 1V. 4 watts. 300 to 3000 Hz. Less than 7% @ 3 watts @ 1000 Hz. 16 ohms, round. 8 ohms; disables internal speaker when connected. 4 watts into external speaker. 8 ohms, when PA-CB switch is in PA, the PA speaker also monitors the receiver; separate jack provided.
Size Weight Antenna Connector Semiconductors Meter


Power Output Modulation Frequency Response Output Impedance


Sensitivity Selectivity Image Rejection Adjacent-Channel Rejection IF Frequencies Automatic Gain Control (AGC) RF Gain Control Noise Blanker Squelch Audio Output Power Frequency Response Distortion Built-in Speaker External Speaker (Not Supplied)
The COBRA 29 WX ST has a vastly superior receiver which includes noise blanker circuitry and an automatic noise limiter. The receiver also features increased protection 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 Purchase Dealer Name Keep this manual for detailed information about your Cobra CB radio. SAVE YOUR SALES RECEIPT, CARTON AND PACKING FOR POSSIBLE FUTURE USE.


Power Output External Speaker for PA (Not Supplied)


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 interfere 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.

Installation (Cont.)

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." Connect the red lead of DC power cord to +13.8 VDC. In automobile installations, +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 operating the unit without the vehicle's engine running. Before installing the CB radio, visually check the vehicle battery connections to determine which battery terminal, positive or negative (positive is the larger of the two) is grounded to the engine block (or chassis).
Mounting and Connection The transceiver is held in the universal mounting bracket by two thumbscrews, permitting adjustment at the most convenient angle. A universal 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:
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. Drill necessary holes and secure mounting bracket in location.
Connect he black lead to the negative side of the automobile. This is usually the 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.
When 13.8 volts DC is initially applied to radio, the radio will turn on (when power switch is in OFF position) for 1 second. This is the emergency weather alert normal initialization procedure. 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.
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. A vertically polarized, quarter-wavelength whip antenna provides the most reliable 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 direction 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. A standard antenna connector (type SO-239) is provided on the transceiver for easy connection to a standard PL 259 cable termination. Cobra loaded type antenna models are highly recommended for most installations. Consult your Cobra dealer for further details, or call 773-8893087 and speak to a Cobra customer representative. WX Antenna For best reception of weather channels, we recommend dual band antennas which provide optimum CB and WX reception. If you want more information about models and prices, call our consumer hotline 773-889-3087. When installed in a boat, the transceiver will not operate at maximum efficiency without a ground plate, unless the vessel has a steel hull. Before installing the transceiver in a boat, consult your dealer for information regarding an adequate grounding 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 system. Typical CB antennas may not be very efficient when used for WX reception. Call 773-889-3087 for further information.

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 from the 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 transceiver may 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 COBRA 29 WX ST has an automatic noise limiter, in some installations ignition interference may be high enough to make good communications impossible. The electrical noise may come from several sources. Many possibilities exist and variations between vehicles require different solutions to reduce the noise. Consult your COBRA dealer or a 2-way radio technician for help in locating 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 COBRA dealer. It consists of a 120-volt, 60 Hz AC to 12-volt DC power converter 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 COBRA transceiver from a car on a temporary basis, you may want to purchase an optional cigar lighter adapter from your COBRA dealer. This adapter and a magnetic mount antenna allow you to quickly "install" your transceiver for temporary use.


Controls and Indicators Refer to controls, indicators and connectors as illustrated below:

Operation (Cont.)

DELTA-TUNE. For normal operation, set this control to the center position. This feature has several uses and can greatly enhance receiver operation. If a received signal is slightly off frequency, the Delta-Tune control can be used to fine-tune your receiver. Fine tuning is accomplished by listening for a more readable signal at the speaker or by noting the Smeter reading when the Delta-Tune control is operated. Another use of this control is eliminating adjacent interference. If an exceptionally high level signal from an adjacent channel is creating interference on the channel being used, the Delta-Tune can be used to minimize or eliminate the interference. Rotate the control until you obtain minimum adjacent channel interference. NOTE: Delta-Tune is operable only in the receive mode. WEATHER CHANNEL SELECTOR. This switch selects any one of the seven U.S. NOAA Weatherband broadcast stations (see p. 1). Always keep set to local NOAA Frequency. See enclosed brochure and card for NOAA travel information. NOTE: The Weather Alert Tone can be turned off by positioning this selector in the off location. SWR CAL. Used to calibrate the meter for SWR (standing wave ratio) measurements. Simply switch to "CAL," press the PTT switch on the microphone and calibrate the meter. CHANNEL SELECTOR SWITCH. This switch selects any one of forty Citizens Band channels desired. The selected channel is indicated by the LED readout (17), directly above the channel selector knob. S/RF/SWR/CAL SWITCH. When in the S/RF position, the meter swings proportionally to the strength of the received signal. When transmitting, the meter indicates relative RF output power. When in the "CAL" position, the SWR meter can be calibrated by adjusting the "SWR CAL" control to the "CAL" mark on the meter face. When in the "SWR" position, the standing wave ratio is measured. NB-ANL/ANL/ OFF SWITCH: When this switch is in the ANL position, only the automatic noise limiter in the audio circuits is activated. When it is in the NB/ANL position, the RF noise blanker also is activated. The RF noise blanker is very effective for repetitive impulse noise, such as ignition interference. PA/CB SWITCH:.Selects the mode of operation. In the CB position, the PA function is disabled and the unit will transmit and receive on the selected frequency. The PA function should not be used unless a PA speaker is connected. In the PA mode, incoming CB transmissions will be heard through the PA speaker. This allows you to monitor messages when you are not inside your vehicle. CB/WX SWITCH. Used for selection between receiving Weatherband broadcasts or normal CB operation. The radio will not transmit in the Weatherband mode.

A. Front Panel

8. 9. 10.

1. 2. 3.

MICROPHONE CONNECTOR. Front panel microphone connector. OFF/ON/VOLUME. Turn clockwise to turn power on and set the desired listening volume. SQUELCH. This control is used to cut off or eliminate receiver background noise in the absence of an incoming signal. For maximum receiver sensitivity 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. DYNAMIKE. Adjusts the microphone gain in the transmit and PA modes. This controls the gain to the extent that full talk power is available several inches away from the microphone. In the Public Address (PA) mode, the control functions as the volume control. 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.
CH.19/CH.9/NORMAL SWITCH. Used for instant selection of emergency Channel 9 (CH. 9 position) or information Channel 19. In NORMAL position, all 40 CB channels are selected by the CHANNEL SELECTOR switch (9). S-METER. Swings proportionally to the strength of the incoming signal during receiving. The S/RF-SWR-CAL switch must be in the S/RF position. RF-METER.Swings proportionally to the RF output power while transmitting. The S/RF-SWR-CAL switch must be in the S/RF position. SWR METER. Measures standing wave ratio of the antenna system. Used to properly adjust the length of the antenna and to monitor the quality of the coaxial cable and all RF electrical connections. If there is any degradation whatsoever in any of the foregoing, due to humidity, salt spray, vibration or corrosion, the SWR meter reading will rise, thereby indicating that a problem exists. To calibrate, switch to the "CAL" position, transmit by pressing the mike switch, and adjust the SWR control to the "CAL" mark on the meter; then switch to "SWR" position for the SWR measurement. RX/TX/WX LED INDICATOR. When your radio is in the CB receive mode, the LED will be green. When in transmit mode, the LED will be red and in Weatherband mode, the LED will be orange. LED CHANNEL DISPLAY. The selected channel will be displayed. Display will be off when radio is in Weatherband mode. SOUNDTRACKER SWITCH. Depressing this button turns on the SoundTracker system in your CB. SOUNDTRACKER INDICATOR. A red LED will illuminate when the SoundTracker system is engaged on your CB.

16. 17. 18. 19.

C. Rear Panel 1. PUBLIC ADDRESS: An external 8-ohm 4.0 watt PA speaker may be connected to the PA Speaker 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 microphone and speaker must be employed when operating the PA at high output levels. 2. EXTERNAL SPEAKER: 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. ANTENNA CONNECTOR: 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. A power cord with polarized plug is supplied with the radio. The polarized plug ensures that the power will always be connected properly. Operating Procedure to Receive CB Broadcasts 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 CONTROL clockwise. 3. Set the RF GAIN CONTROL fully clockwise. 4. Rotate SQUELCH CONTROL counterclockwise until incoming signal is heard. 5. Set the Channel Selector Switch to the desired channel. 6. Set VOLUME CONTROL to a comfortable listening level. 7. Engage the SoundTracker system by depressing the buttons labeled ST. SoundTracker system allows you to reduce unwanted background noise (static) and increase the signal for better reception. Listen to the background noise from the speaker. Turn the SQUELCH CONTROL slowly clockwise until the noise JUST disappears (no signal should be present). Leave the control at this setting. The squelch is now properly adjusted. 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.
1. Be sure that the power cord, antenna and microphone
B. 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 lowimpedance dynamic type. The radio will not transmit in the Weatherband mode even though pressing the microphone switch will cause the red TX LED to illuminate.

Operating Procedure to Transmit

How SoundTracker Works

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.

1. 2. 3. 4.

Be sure the operator has read and understands part 95, F.C.C. Rules and Regulations prior to operating the transmitter. Select the desired channel. Set the DYNAMIKE control fully clockwise. The receiver and transmitter are controlled by the press-to-talk switch on 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.
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 WORKS
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
On ReceptionCuts Noise Coming In
With a normal CB, distant signals fall below the squelch level and are unintelligible. 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.
Connect a PA speaker to the PA jack provided on the rear panel. Place PA/CB/ANL switch into the PA position. Depress push-to-talk switch on micspeak in normal voice. Adjust PA speaker volume with front panel DYNAMIKE control. When the Volume control is rotated clockwise, activity on the CB channel will be heard through the PA speaker. Operating Procedure to Receive Weather Band
Place CB/WX Switch in the WX position Turn the Weather Channel Selector (1-7) until you find the Weather Channel with the clearest reception. Sometimes more than one channel can be received depending on your location in the broadcast area; however, the closest broadcast to you will be the one with the clearest signal (the least static or background noise). If threatening weather is nearby, the National Weather Service may broadcast a 10 second alert tone. This tone will be heard through the CB, even if the CB/WX Switch is in the CB mode or the unit is turned off if desired (see NOTE below). This enables you to monitor CB frequencies and still be warned by the National Weather Service Emergency Alert. When you hear the alert, place the CB/WX switch in the WX position. You will then be able to hear the Weather Warning Broadcast. NOTE: If you are using the CB mode, remember to change the CB/WX Switch from CB to WX every so often to make sure you are continually tuned to the clearest/closest weather band channel in case an alert is broadcast. You can completely disable the Emergency Weather Alert feature by turning the Weather Channel Selector to the OFF position.

On TransmissionStrengthens Signals Going Out
A SoundTracker 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.
Maintenance and Adjustment
The COBRA CB transceiver is specifically designed for the environment encountered 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. 2. Check connections to the source of power and make sure it is the 13.8 VDC required to operate your radio. Check the fuse in the DC power cord. The main power lead (red wire) has a 2 Amp 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. Make certain the microphone is properly plugged in. Make certain the antenna is properly connected and tuned for minimum SWR. NOTE: COBRA antennas include full instructions as to how to tune your antenna. If you're still in doubt about the procedure, contact the COBRA dealer from whom you purchased your radio and antenna, for advice. If you hired an installer to install your radio and antenna, contact the installer.


Citizens Band radio operators have largely adopted the 10-code for standard questions and answers. Its use permits faster communications and better understanding in noisy areas. The following table lists some of the more common codes and their meanings:
Code 10-1 10-2 10-3 10-4 10-5 10-6 10-7 10-8 10-9 10-10 10-11 10-12 10-13 10-16 10-17 10-18 10-19 10-20 10-21 10-22 10-23 10-24 10-25 10-26 10-27 10-28 10-29 10-30 10-32 10-33 10-34
If you are unable to correct the problem, refer the WARRANTY SERVICE 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 reread 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. 24 hours a day, 7 days a week. A Consumer 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 or by e-mail to

(773) 889-3087

Meaning Receiving poorly Receiving well Stop transmitting OK, message received Relay message Busy, stand by Out of service, leaving air In service, subject to call Repeat message Transmission completed, standing by Talking too rapidly Visitors present Advise Weather/Road conditions Make pick up at Urgent business Anything for us? Nothing for you, return to base My location is Call by telephone Report in person to Stand by Completed last assignment Can you contact Disregard last information I am moving to channel Identify your station Time is up for contact Does not conform to FCC rules I will give you a radio check EMERGENCY TRAFFIC Trouble at this station
Code 10-35 10-36 10-37 10-38 10-39 10-41 10-42 10-43 10-44 10-45


Confidential information Correct time is Wrecker needed at Ambulance needed at Your message delivered Please turn to channel Traffic accident at Traffic Tie up at I have a message for you All units within range please report 10-50 Break channel 10-60 What is next message number? 10-62 Unable to copy, use phone 10-63 Net directed to 10-64 Net clear 10-65 Awaiting your next message/assignment 10-67 All units copy 10-70 Fire at 10-71 Proceed with transmission in sequence 10-77 Negative contact 10-81 Reserve hotel room for 10-82 Reserve room for 10-84 My telephone number is 10-85 My address is 10-91 Talk closer to mike 10-93 Check my frequency on this channel 10-94 Please give me a long count 10-99 Mission completed, all units secure 10-200 Police needed at

Appendix (Cont.)

A Few Rules That Should Be Obeyed
If You Think You Need Service
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 returned. 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 in transit) such as United Parcel Service (UPS), Roadway Parcel Service (RPS) or First Class Insured Mail to Cobra Factory Service, Cobra Electronics Corporation, 6500 W. Cortland St., Chicago, IL 60707. Cobra is not responsible 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 automatically be sent informing you of the repair charge or replacement charge. If you have any questions, please call 773-889-3087 for assistance.

1. 2. 3. 4. 5. 6.

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. You are not allowed to blast others off the air by overpowering them with illegally amplified transmitter power or illegally high antennas. You cant use the CB to promote illegal activities. You are not allowed to use profanity. You may not play music in your CB. 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.
For technical assistance, please call our Automated Help Desk which can assist you by answering the most frequently asked questions about Cobra products. 24 hours a day, 7 days a week. A Consumer 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 or by e-mail to

Warranty and Service

Limited Two Year Warranty
COBRA ELECTRONICS CORPORATION warrants that its COBRA citizens band (CB) radio, and the component parts thereof, will be free of defects in workmanship and materials for period of two (2) 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 citizens band (CB) 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. The return charges will be at Cobras expense, if the product is repaired or replaced under warranty. For further details concerning procedures for obtaining service, see the If You Need Service section of the Owners Manual. 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. This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Cobra Electronics Corporation, 6500 W. Cortland Street, Chicago, IL 60707

OPTIONAL ACCESSORIES You can find these fine accessories at your local Cobra CB dealer.
Description Part No. Cost Ea. $19.95 $7.50 $4.50 $.60 ea $19.95 $39.95 $69.95 X Qty. = Amount DYNAMIC MICROPHONE Replacement microphone with 4-pin screw-on connector CA-73 DC POWER CORD Exact replacement 426-002-N-001 MOUNTING BRACKET Exact replacement 251-353-9-001 MOUNTING BRACKET SCREWS Exact replacements 634-081-9-001 POWER MICROPHONE Amplified power mic POWER/NOISE-CANCELLING MICROPHONE Amplified power mic with noise-cancelling design POWER/ECHO MICROPHONE Amplified power mic with echo circuitry ATW-400 High performance, dual band, CB and Weather magnetic mount antenna ATW-480 High performance, dual band, mirror mount antenna. Replacement whip (cable and bracket not included). CA-75 CA-77 CA-79




(Prices subject to change without notice)
Illinois residents add 7% 55 Cook Co. residents add.75% (7.75% total) 55 Chicago residents add 1% (8.75% total) 55 Indiana residents add 5% 55 Michigan residents add 4 % 55 Minnesota residents add 6% 55 Ohio residents add 6% 55 Wisconsin residents add 5%
Amount (Tax if applicable ) Shipping//handling Total $3.50
If you wish, you can order directly from Cobra
Order by phone: Call 1-773-889-3087 (Press 1 from the main menu) 8a.m.-8p.m. M-F CST. Order by mail or fax: Please fill out order form below, and mail/fax directly to Cobra.
Mail to: Cobra Accessories Dept. 6500 W. Cortland St., Chicago, IL 60707

Fax to: 1-773-622-2269

Make check or money order (no stamps) payable to Cobra Electronics and mail with this order form to:
Cobra Accessories Dept. 6500 W. Cortland St., Chicago, IL 60707 Call 773-889-3087, or fax 773-622-2269 for credit card orders
Allow 4 to 6 weeks for delivery. Offer valid in Continental U.S. only.
Please print clearly: Name __________________________________________________________________
Address (Not P. O. Box) ____________________________________________________ City ________________________________State____________Zip ________________ Credit Card No. ______________________________________Exp. Date ____________ Customer Signature __________________________________________

Circle One:




Technical specifications

Product TypeCB radio
Width7.3 in
Depth8.6 in
Height2.2 in
Weight4 lbs
Radio System
Power4 watts
Sensitivity (12dB SINAD)1 uV
ControlsPower/volume knob, channel selector knob, squelch knob, weather channel selector knob, dimmer knob, emergency/information/normal switch, gain knob, automatic noise limiter (ANL) switch, CB/PA switch, push-to-talk (PTT) button
IndicatorsTX, RX
Two-Way Radio Display InformationChannel indicator
FCC Licensing RequirementsNot required
Radio System Features
Weather Channels7 NOAA weather channels
TypeLED display
Line Qty1
Character Qty2
Connections1 x microphone jack 1 x antenna - SO-239 2 x speaker jack 1 x DC power input
Included AccessoriesMounting kit, external microphone
Manufacturer Warranty
Service & Support2 years warranty
Service & Support DetailsLimited warranty - 2 years
Universal Product Identifiers
BrandCobra Electronics
Part Number29 WX NW ST
GTIN00840356849515, 00028377200465, 00028377903007



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