Cobra Electronics Cobra 25 NW ST specifications Antennas Ignition Noise Interference, CB Antenna

Page 4

25 NWST Manual3.3 6/15/99 12:43 PM Page 6

 

Antennas

Ignition Noise Interference

 

 

 

 

 

 

 

CB Antenna

Note

For optimum performance in passenger cars the ideal anten- na location is on the center of the roof. Second choice is on the center of the trunk.

Note

Because many newer trucks feature fiberglass door skins, the outside mirror must be ground- ed to the chassis via a ground strap, if the antenna is mounted on the mirror bracket.

Note

3-way Combination Antennas are also available which allow operation of all three bands (AM-FM & CB),using a single antenna. However, this type of antenna usually results in less than normal transmit and receive range when compared to a standard-type “Single Band” CB antenna. Call 773.889.3087 for further infor- mation.

CB Antenna

Since the maximum allowable power output of the transmitter is limited by the FCC,the antenna is critical in affecting transmission distance. Only a properly matched antenna system will allow maximum power output. Cobra loaded type antenna models are highly recommended for most installations. Consult your Cobra dealer for further details, or call 773.889.3087 and speak to a Cobra representative.

1A standard antenna connector is provided on the transceiver for easy connection.

Marine Installation

The transceiver will not operate at maximum effi- ciency in a boat without a ground plate, (unless it has a steel hull). Before attempting installation , consult your dealer for information regarding an adequate grounding system and prevention of electrolysis between fittings in the hull and water.

Use of a mobile receiver at low signal levels is normally limited by the presence of electrical noise. The primary source of noise in automobiles is from the alternator and ignition system. Typically, when signal level is adequate, the back- ground noise does not present a serious problem. Also, when extremely low level signals are being received, the transceiver may be operated with the vehicle’s engine turned off. The unit requires very little current and therefore will not signifi- cantly discharge the vehicle’s battery.

Even though the Cobra 25 NW ST has an auto- matic noise limiter, in some installations ignition interference may be high enough to make good communications impossible. Many possibilities exist and variations between vehicles require different solutions. Consult your COBRA dealer or a 2-way radio technician for help in locating the source of a severe noise.

 

6

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 3 Page 5
Image 4
Page 3 Page 5
Contents How to Use Your Cobra 25 NW ST Features of This ProductInstallation LocationLocationMounting and Connection Mounting and ConnectionInstallation Marine Installation Antennas Ignition Noise InterferenceCB Antenna CB AntennaSetting Channel OperationTurning On SelectorSelecting a ChannelTo Receive MeterActivating SoundTrackerSoundTrackerTM System How SoundTrackerTM WorksSetting Squelch Setting SquelchDimmer Control Dimmer Control RF Gain ControlTo Transmit Gate set to Desired Squelch Setting DSSTo Transmit Setting Setting DynamikeDynamike TransmitExternal Speaker External Speaker PA PublicAddress PA Public AddressSwitch ANL AutomaticNoise Limiter Noise BlankerTemporary Mobile Set-Up Home And Office Set-Up Temporary Mobile Set-UpBase Station Operation From 120V AC House Current Temporary Mobile OperationFew Rules You Should Know Home And Office Set-Up How Your CB Can Serve YouChannel Emergency Messages Permitted Example Message CB 10-CodesFrequency Ranges FreqNW ST Specifications Limited Two Year Warranty Cobra Electronics CorporationOptional Accessories Magnetic Mount Antenna Dual Band CB/WX Antenna MicrophoneAccessory Order Form Shipping & HandlingIf you think you need service call If You Think You Need ServicePm,Monday through Friday, CST CB Story FCC RegulationsFCC Warnings What’s Included with Your 25 NW STControls and Indicators Our Thanks to You Cobra Customer ServiceSoundTrackerTM Customer Support

Cobra 25 NW ST specifications

The Cobra 25 NW ST is a popular model in the realm of mobile communications, particularly among professional drivers and outdoor enthusiasts. This compact and efficient 40-channel CB radio is designed to provide reliable communication, making it a valuable tool for anyone who requires a dependable means of contacting others over short distances.

One of the central features of the Cobra 25 NW ST is its 40-channel capability. This allows users to access a wide range of frequencies, ensuring that they can find an open channel for communication even in crowded areas. The radio’s automatic noise limiter works diligently to minimize background noise, enhancing clarity and ensuring that messages come through loud and clear. Users can depend on the sound quality provided by this model, which is crucial for maintaining effective communication on the road.

Equipped with a built-in high-efficiency speaker, the Cobra 25 NW ST delivers crisp audio even in noisy environments such as trucks or construction sites. The radio also features a dynamic microphone that is specifically designed to enhance voice clarity, making it easier for listeners to understand the sender's message.

In terms of usability, the Cobra 25 NW ST has a straightforward interface. The dial and buttons are clearly marked, allowing users to operate the device easily without needing extensive training. The front-mounted controls enable quick adjustments, ensuring that users can focus on their driving without getting distracted by complicated setups.

Additionally, the Cobra 25 NW ST is designed with a rugged construction, ideal for the rigors of the road. Its durable casing can withstand the bumps and jolts commonly encountered in vehicles, making it suitable for a variety of environments. The radio also features an illuminated LCD display, providing visibility even in low-light conditions, which is essential for nighttime use.

Another notable technology incorporated into the Cobra 25 NW ST is its dual watch function. This feature allows users to monitor two channels simultaneously, ensuring they never miss important communications. With a compact design, this CB radio fits easily between the seats or on a dashboard, making it a convenient choice for both lightweight transport and permanent installations.

In summary, the Cobra 25 NW ST is a feature-rich CB radio that excels in performance, durability, and ease of use. Its combination of essential communication capabilities and user-friendly design makes it an excellent choice for drivers and outdoor enthusiasts alike, facilitating reliable communication in various settings. Whether for work or leisure, this radio stands out as a dependable companion on the road.
Top Page Image Contents