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148 NW ST manual 3.3 6/15/99 3:11 PM Page 1
How to Use Your
Cobra 148 NW ST
Contents
Features..................................................................................................1
The CB Story.........................................................................................A1
FCC Regulations
FCC Warnings
Features of This Product
Included Accessories
Controls & Indicators.......................................................................A2
• 40 CB Radio Channels
Our Tha
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148 NW ST manual 3.3 6/15/99 3:11 PM Page 2 Installation 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 int e 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. Mounting and Connection Mounting and 1 Connection Hold the radio with the mounting bracket in the exact desire
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 4 Installation Installation Note Connecting to an accessory fuse prevents the unit from being left on accidentally, and also per- mits operating the unit without running the engine. Note In positive ground vehicles the red wire goes to the chassis and the black wire is connected to 6 Plug power cable into back of unit marked the ignition switch. “Power” . Be sure to observe polarity markings. Note 7 Mount the microphone bracket on either side of Before
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 6 Antennas Ignition Noise Interference Use of a mobile receiver at low signal levels is CB Antenna CB Antenna normally limited by the presence of electrical Since the maximum allowable power output of noise. The primary source of noise in automobiles Note the transmitter is limited by the FCC,the antenna is from the alternator and ignition system. For optimum performance in is critical in affecting transmission distance. Only Typically, when signal lev
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 8 Operation Operation Turning On Setting Channel Selector Turning On Setting Channel Selector Make sure the power cord, antenna and micro- phone are connected to their proper connectors before starting. 1 Select one of forty channels and adjust volume. The selected channel is indicated by the LED readout directly above the channel selector knob 1 The CB/PA button should be in the CB position. 2 Ro t ate the On/Off Volume knob c l oc kw i
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 10 Operation Operation TM To Receive To Receive The SoundTracker System While previous systems only “blanket out” or limit noise in higher sound frequencies, the revolution- TM ary new SoundTracker System actually reduces noise while leaving the signal intact in the recep- Note tion mode. In the transmission mode, it actually SoundTracker™ gives you strengthens the signal,providing you with a clearer, cleaner reception to significant reduction in noi
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 12 Operation Operation NB-ANL/ANL/OFF (Noise Activating SoundTracker™ NB-ANL/ANL/ Activating Blanker/Automatic Noise Limiter) Switch ™ OFF (Noise SoundTracker Blanker/ Automatic Noise Limiter) Switch Note The RF Noise Bl a n ker is v e ry e f fe ct i ve in reducing re pe t i t i ve noises such as ignition 1 i n te rf e re n ce. When switched to ANL the Automatic Noise 1 Push and release the ST button. Red LED The Automatic Noise Limiter Lim
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 14 Operation Operation USB/AM/LSB Switch Dimmer Control Dimmer Control Controls the brightness of the front panel,signal strength meter and channel display Select mode of operation from USB to AM 1 For maximum brightness turn clockwise; to LSB counterclockwise for minimum illumination Voice Lock RF Gain Control RF Gain Control The RF Gain is used to optimize reception in strong or weak signal areas. Note The RF Gain is used to optimiz e reception i
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 16 Operation Operation Gate set to Desired Setting Squelch Setting Squelch Squelch Setting (DSS) Squelch is the “control gate” for incoming signals. Gate closed To achieve the Desired Squelch Setting (DSS), 3 turn the Squelch control counterclockwise until you hear noise. Now turn the control clockwise just until the noise stops. This is the 1 Full clockwise rotation closes the gate DSS setting. allowing only very strong signals to enter.
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 18 Operation Operation Note Calibrate for SWR (Standing Wave Ratio) Calibrate For Calibration must be made in an SWR (Standing open area (never in a garage). Wave Ratio) Vehicle doors must be closed. No one should be standing near the Note antenna.(See your antenna SWR calibration is done to prop- directions for more complete erly adjust the length of the information). antenna and to monitor the quality of the coaxial cable and all RF connections. 4 W
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 20 Operation Operation Transmit To Transmit To Transmit Transmit Caution! Be sure the antenna is properly connected to the radio before transmitting. Prolonged trans- mitting without an antenna,or a poorly matched antenna, could cause damage to the transmitter. 1 1 Press and hold mic button to transmit. Select desired channel. Be sure to read the F.C.C. Rules Transmitter is now activated. When transmit- and Regulations included with ting, hold the
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 22 Operation Operation PA (Public Address) External Speaker PA (Public External Speaker Address) The external speaker jack is used for remote receiver monitoring. Note Speaker should have 8-ohm Note impedance and be rated to The external speaker should handle at least 4.0 watts. have 8-ohm impedance and b e rated to handle at least 4.0 Note watts.When the external speak- The speaker should be directed er is plugged in,the internal away from the microph
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 24 Operation Operation Base Station Operation Base Station (From 120V AC House Current) Operation To operate your transceiver from home or office (From 120V AC you will need a 13.8 volt DC Power Pack rated at a House Current) minimum of 2 amps, and a properly installed base station antenna. Warning! Do not attempt to operate this transceiver by connecting it 3 Push and hold microphone button and speak directly to 120 vac. in a normal voice. Your voice
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 26 Temporary Mobile Set-Up How Your CB Can Serve You • Warn of traffic problems • Provide weather and road data • Provide help in event of an emergency • Provide direct contact with home or office • Assist police by reporting erratic drivers • Get “local information” to find destination • Communicate with family and friends • Suggest spots to eat and sleep • Keep you alert while driving A Few Rules A Few Rules You Should Know 2 Plug power cable into ba
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 28 How Your CB Can Serve You How Your CB Can Serve You CB 10-Codes CB 10-Codes The FCC gives these examples of permitted and Citizen Bands have adopted the “10-CODES” for prohibited messages for channel 9. These are standard questions and answers. These codes only guidelines and not all-inclusive: p rovide quick and easy c o m m u n i ca t i o n ,e s pe c i a l l y in noisy areas. Following are some of the more Permitted Example Message common cod
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 30 How Your CB Can Serve You Frequency Ranges Code Meaning The COBRA 148 NW ST transceiver represents 10-29 Time is up for contact one of the most advanced AM two-way radios 10-30 Does not conform to FCC rules used as a Class D station in the Citizens Radio 10-33 Emergency traffic Service. This unit features advanced Phase Lock 10-34 Trouble at this station Loop (PLL) circuitry providing complete cover- 10-35 Confidential information age
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 32 148 NW ST Specifications Limited One Year Warranty G E N E RA L C O B RA ELECTRONICS C O R P O RA T I O N wa rr a nts that its C H A N N E L S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 AM, 40 LSB, 40 USB FREQUENCY R A N G E. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26.965 TO 27.405 MHZ C O B RA CB
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 34 Optional Accessories Optional Accessories Replacement Mounting Replacement Thumb Screws Replacement DC Power Cord Bracket For in vehicle use For in vehicle use Power Microphone Noise Canceling/Power Echo/Noise Canceling For in vehicle use 634-088-9-001 $0.60 420-071-9-001 $7.50 Microphone Microphone For in vehicle use 250-044-N-001 $4.50 CA 75 $21.95 For in vehicle use For in vehicle use CA 77 $24.95 CA 79 $59.95 Replacement Microphone 28” Full Rang
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 36 Accessory Order Form Item # Description Cost Ea. Qty. Amount 4 2 0 - 0 7 1 - 9 - 0 0 1 R e p l a ce m e nt DC Power C o rd $ 7 . 5 0 2 5 0 - 0 4 4 - N - 0 0 1 R e p l a ce m e nt M o u nting Br a c ke t $ 4 . 5 0 634-088-9-001 Replacement Thumb Screws $0.60 741-080-9-001 Replacement Microphone Bracket $0.45 AT 35 28” Full Range Center Load, Magnetic Mount Antenna $19.95 AT 55 25” Glass Mount Antenna $27.95 AT 70 39” Full Range Base Load, Magnetic Mo
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148 NW ST manual 3.3 6/15/99 3:12 PM Page 37 148 NW ST Cobra Electronics Corporation 6500 West Cortland Street Chicago, IL60707 O pe rating Instr u ctions If You Think You Need Service for your C o b ra 148 NW ST For te c h n i cal assistance,please call our Au to m a ted Help Desk which can assist you by answering the most fre q u e n t ly asked questions about C o b ra prod u ct s. CB Radio (773) 889-3087 24 hours a day, 7 days a week. A Consumer Service Representative can be reached thr
