Cobra 25 NW ST Operating Instructions Manual
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Cobra 25 NW ST Operating Instructions Manual

Cobra electronics owners manual two-way radio cobra 25 nw st
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Enlarged version
25 NWST Manual3.3
6/15/99 12:43 PM
Contents
Features...........................................................................................1
The CB Story..................................................................................A1
FCC Regulations
FCC Warnings
Included Accessories
Controls & Indicators ................................................................A2
Our Thanks to You ......................................................................A3
SoundTracker ™
Customer Support
Location.......................................................................................2
Mounting and Connection...................................................2
CB Antenna................................................................................ 6
Marine Installation...................................................................6
Ignition Noise Interference ...................................................7
Operating Your 25 NW ST
Turning On Your CB.................................................................8
Setting Channel Selector.......................................................9
To Receive ...................................................................................10
Selecting a Channel................................................................10
S-Meter.........................................................................................11
SoundTracker ™ System.........................................................12
Activating SoundTracker ™ ..................................................13
Dimmer Control........................................................................14
RF Gain Control.........................................................................14
Setting Squelch.........................................................................15
To Transmit.................................................................................17
Setting Dynamike ....................................................................18
Transmit.......................................................................................19
RF Meter......................................................................................19
External Speaker.......................................................................20
PA (Public Address)..................................................................21
ANL (Automatic Noise Limiter) Switch.............................23
NB, OFF (Noise Blanker) Switch...........................................23
Temporary Mobile Set-Up.....................................................24
Home And Office Set-Up.......................................................25
How Your CB Can Serve You...................................................27
A Few Rules You Should Know............................................27
Channel 9 Emergency Messages.......................................27
CB 10 Codes...............................................................................29
Frequency Ranges ......................................................................31
25 NW ST Specifications..........................................................32
Warranty Information ..............................................................33
Optional Accessories.................................................................34
Order Form ....................................................................................36
If You Think You Need Service .............................Back Cover
Page 1
How to Use Your
Cobra 25 NW ST
Features of This Product
• 40 CB Radio Channels
• SoundTracker
™
System
• Heavy-Duty Dynamic
Microphone
• Full 4 Watts AM RF Power Ou t p u t
• Instant Channel 19 and 9
• Front Panel 4-Pin Microphone
Connector
• Switchable Noise Blanker
• Switchable Automatic
Noise Limiter
• Adjustable Dynamike Boost
• Tactile Controls
• Illuminated Front Panel
• Dimmer Control
• RF Gain
• 9 ft. mic cord
CAUTION
!
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK DO NOT REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE
P E R S O N N E L
1
!

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Summary of Contents for Cobra Cobra 25 NW ST

  • Page 1: Table Of Contents

    25 NWST Manual3.3 6/15/99 12:43 PM Page 1 How to Use Your Cobra 25 NW ST Contents Features...1 The CB Story...A1 FCC Regulations FCC Warnings Included Accessories Controls & Indicators ...A2 Our Thanks to You ...A3 SoundTracker ™ Customer Support Installation Location...2...

  • Page 2: Installation

    25 NWST Manual3.3 6/15/99 12:43 PM Page 2 Installation Location Location Plan location of transceiver and microphone bracket before starting the installation. Select a location that is convenient for operation, yet does not inte rfe re with the dri ver or passenger. The transceiver is usually mounted to the under- side of the dash with the microphone bracket beside it.
  • Page 3 25 NWST Manual3.3 6/15/99 12:43 PM Page 4 Installation Note Before installing the CB radio, visually check the vehicle’s battery connection to deter- mine which terminal, positive or negative, is grounded (pos- itive is the larger of the t wo) to the engine block (or chas- sis).A negatively grounded vehicle has its negative lead...

  • Page 4: Antennas

    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.

  • Page 5: Setting Channel Selector

    25 NWST Manual3.3 6/15/99 12:43 PM Page 8 Operation Turning On Turning On Make sure the power cord, antenna and micro- phone are connected to their proper connectors before starting. CB/PA button should be in the CB position. Ro t ate the On/Off Volume knob a normal listening level.

  • Page 6: To Receive

    25 NWST Manual3.3 6/15/99 12:43 PM Page 10 Operation To Receive To Receive Rotate the On/Off Volume knob clockwise the green RT/TX LED will be illiuminated. Selecting A Selecting A Channel Channel Note Switch to 9 (Emergency) or 19 (Information) for instant access to these channels.
  • Page 7 25 NWST Manual3.3 6/15/99 12:43 PM Page 12 Operation The SoundTracker While previous systems only “blanket out” or limit noise in higher sound frequencies, the revolution- ary new SoundTracker Note noise while leaving the signal intact in the recep- tion mode. In the transmission mode, it actually SoundTracker™...

  • Page 8: Dimmer Control

    25 NWST Manual3.3 6/15/99 12:43 PM Page 14 Operation Dimmer Control Dimmer Control Note The Dim controls the brightness of the front panel,signal strength meter and channel display. Rotate the DIM knob clockwise for maximum brightness; counter-clockwise for minimum. RF Gain Control RF Gain Control The RF Gain is used to optimize reception in strong or weak signal areas.

  • Page 9: To Transmit

    25 NWST Manual3.3 6/15/99 12:43 PM Page 16 Operation Gate set to Desired Squelch Setting (DSS) To achieve the Desired Squelch Setting (DSS), turn the Squelch control until you hear noise. Now turn the control clockwise just until the noise stops. This is the DSS setting.

  • Page 10: Setting Dynamike

    25 NWST Manual3.3 6/15/99 12:43 PM Page 18 Operation Setting Setting Dynamike Dynamike This controls the microphone sensitivity (outgoing audio level). Initially, set fully mum voice volume is available. Dynamike may have to be reduced in some conditions. Transmit clockwise so that maxi- Push and hold mic button to transmit.

  • Page 11: External Speaker

    25 NWST Manual3.3 6/15/99 12:43 PM Page 20 Operation External Speaker External Speaker The external Speaker jack is used for remote receiver monitoring. Note The external speaker should have 8-ohm impedance and be rated to handle at least 4.0 watts.When the external speak- er is plugged in,the internal speaker is automatically discon- nected.

  • Page 12: Anl (Automatic Noise Limiter) Switch

    25 NWST Manual3.3 6/15/99 12:43 PM Page 22 Operation Push and hold microphone button and speak in a normal voice. Your voice will sound on the PA speaker. Adjust PA speaker volume with the Dynamike control. ANL (Automatic Noise Limiter) Switch When switched to ANL the Automatic Noise Limiter is activated.This helps reduce noise...

  • Page 13: Temporary Mobile Set-Up

    25 NWST Manual3.3 6/15/99 12:43 PM Page 24 Temporary Mobile Set-Up Temporary Mobile Operation Temporary Mobile Set-Up For temporary mobile operation you may want to purchase an optional cigarette lighter adapter from your COBRA dealer.This adapter and a mag- netic mount antenna allow you to quickly “install” your transceiver for temporary use.
  • Page 14 25 NWST Manual3.3 6/15/99 12:43 PM Page 26 Home And Office Set-Up Plug power cable into back of unit marked “Power” . Be sure to observe polarity markings. Connect properly installed and matched base station antenna. How Your CB Can Serve You •...

  • Page 15: How Your Cb Can Serve You

    25 NWST Manual3.3 6/15/99 12:43 PM Page 28 How Your CB Can Serve You The FCC gives these examples of permitted and prohibited messages for channel 9. These are only guidelines and not all-inclusive: Permitted Example Message “Tornado sighted six miles north of town.”...

  • Page 16: Frequency Ranges

    Mission completed, all units secure 10-200 Police needed at Frequency Ranges The COBRA 25 NW ST transceiver represents one of the most advanced AM two-way radios used 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 CB channels.

  • Page 17: 25 Nw St Specifications

    (NOT SUPPLIED) ....THE PA SPEAKER ALSO MONITORS THE (SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE) COBRA ELECTRONICS CORPORATION warrants that its COBRA CB Radios, and the component parts thereof, will be free of defects in wor kmanship and materials for period of two (2) years from the date of first consumer purchase.

  • Page 18: Optional Accessories

    25 NWST Manual3.3 6/15/99 12:43 PM Page 34 Optional Accessories Replacement Mounting Replacement DC Power Cord Bracket For in vehicle use For in vehicle use 426-002-N-001 $7.50 251-199-9-001 $4.50 Replacement Microphone 28” Full Range Center Load, Bracket Magnetic Mount Antenna For in vehicle use For in vehicle use 741-080-9-001...

  • Page 19: Order Form

    25 NWST Manual3.3 6/15/99 12:43 PM Page 36 Accessory Order Form Item # Description 4 2 6 - 0 0 2 - N - 0 0 1 Re p l a ce m e nt DC Power Co rd 2 5 1 - 1 9 9 - 9 - 0 0 1 Re p l a ce m e nt Mo u nting Bra c ke t 634-081-9-001 Replacement Thumb Screws 741-080-9-001 Replacement Microphone Bracket $0.45 AT 35...

  • Page 20: If You Think You Need Service

    5. Ship prepaid and insured by way of a traceable car rier such as United Parcel Service (UPS) or First Class Mail: to avoid loss in transit to: Cobra Factory Service, Cobra Electronics Corporation,6500 W. Cortland St., Chicago, IL 60707.
  • Page 21 25 NWST Manual3.3 6/15/99 12:43 PM Page 39 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 FCC regulations permit only “transmissions”...
  • Page 22 1 9 . Antenna Connector 2 0 . Power Jack Thank you for purchasing the Cobra 25 NW ST CB Radio. Properly used, this Cobra product will give you many years of reliable service. SoundTracker “Cuts noise coming in...strengthens signals going out.”...

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