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Cobra Electronics 25 NW - page 1
How to Use Y our Cobra 25 NW Cont ents Fea tures ...........................................................................................1 The CB Story ..................................................................................A1 FCC Regulations FCC W arnings Included Accessories Contr ols & Indicators ................................ ...
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Cobra Electronics 25 NW - page 2
Installation Location 2 Mounting and Connection Mounting and C onnection Hold the radio with the mounting bracket in the exact desired location. If there is no inter- ference , remove the bracket and use it as a template to mark the location f or the mount- ing screws. Location Plan location of transceiv er and microphone bracket before starting th ...
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Cobra Electronics 25 NW - page 3
Installation 3 continued Connect the antenna cable plug to the rec ep- tacle marked “ ANT ” on the back of the unit. 3 ANT PA.SP . EXT .SP . + POWER — FCC ID:BBO3K229LTD COBRA MADE IN CHINA SERIAL NO.: 806135776 PRECISION ENGINEERED PRODUCT OF COBRA ELECTRONICS CORP. CHICAGO, ILL.60707 ...
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Cobra Electronics 25 NW - page 4
Installation 4 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 two) to the engine block (or chas- sis). A negatively grounded vehicle has its negative lead grounded to the chassis. Note Connecting to an accessory ...
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Cobra Electronics 25 NW - page 5
Installation 5 Microphone Connector Plug power cable int o back of unit marked “Po wer” . Be sure to observe polarity mar kings. Mount the microphone bracket on the right side of the unit (driver’ s lef t) using two screws sup- plied. Bracket should be placed under the dash so microphone is readily accessible. 6 7 Attach the 4-pin microphone ...
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Cobra Electronics 25 NW - page 6
ANT P A.SP . EXT .SP . + POWER — FCC ID:BBO3K229LTD COBRA MADE IN CHINA SERIAL NO.: 806135776 PRECISION ENGINEERED PRODUCT OF COBRA ELECTRONICS CORP . CHICAGO , ILL.60707 Antennas CB Antenna Since the maximum allowable pow er output of the transmitter is limited by the FC C, the ant enna is critical in affecting transmission distance. Only a p ...
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Cobra Electronics 25 NW - page 7
Ignition Noise Interference Use of a mobile receiv er at low signal levels is normally limited by the presence of electrical noise. The primar y source of noise in automobiles is from the alternator and ignition syst em. T ypically , when signal level is adequate , the back- ground noise does not present a serious problem. Also , when extremely low ...
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Cobra Electronics 25 NW - page 8
The CB/P A button should be in the CB position. Operation T urning On 8 T urning On Make sure the power cord , antenna and micro- phone are connected to their proper connectors before starting. 2 SIG 1 3 5 7 9 +30dB RF MIN MAX MIN MAX OFF 25 NW L TD CLASSIC 1 Rotate the On/Off V olume knob clock wise to a normal listening level. LT D CLASSIC ...
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Cobra Electronics 25 NW - page 9
Operation 9 Setting Channel Selector Setting Channel Selec tor Select one of for ty channels and adjust volume. The selected channel is indicated by the LED readout directly above the channel selector k nob 1 MIN MAX MIN MAX O LT D CLASSIC ...
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Cobra Electronics 25 NW - page 10
Rotate the On/Off V olume knob clockwise the green RX/TX LED will be illiuminated. Operation 10 Switch to NOR to select desired channel. 1 Selecting A Channel Selec ting A Channel Note Switch to 9 (Emergency) or 19 (Information) for instant access to these channels. 25 NW LT D CLASSIC T o Receive 1 T o Receive LT D CLASSIC ...
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Cobra Electronics 25 NW - page 11
Operation 11 S-Meter S-Meter Swings proportionately to strength of incoming signal when receiving . ...
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Cobra Electronics 25 NW - page 12
Operation 12 RF Gain Control Dimmer Control RF Gain Contr ol The RF Gain is used to optimize reception in strong or weak signal areas . Dimmer Con trol Note The RF Gain is used to optimize reception in weak signal areas . Rotate the DIM knob clock wise for maximum brightness; counter-clockwise for minimum. Rotate the RF Gain knob counterclockwise t ...
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Cobra Electronics 25 NW - page 13
Operation 13 NOISE WEAK SIGNALS MEDIUM SIGNALS STRONG SIGNALS GA TE CL OSED NOISE WEAK SIGNALS MEDIUM SIGNALS STRONG SIGNALS NOISE WEAK SIGNALS MEDIUM SIGNALS STRONG SIGNALS GA TE OPEN NOISE WEAK SIGNALS MEDIUM SIGNALS STRONG SIGNALS Gate open Gate closed Setting Squelch F ull clock wise rotation closes the gat e allowing only very ...
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Cobra Electronics 25 NW - page 14
T o achieve the Desired Squelch Setting (DSS), turn the Squelch control counter clockwise until you hear noise. Now turn the control clockwise just until the noise stops. This is the DSS setting. 14 Operation 3 NOISE WEAK SIGNALS MEDIUM SIGNALS STRONG SIGNALS GA TE Gate set to Desired Squelch Setting (DSS) SIG 1 3 5 7 9 +30dB RF MIN MAX MIN M ...
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Cobra Electronics 25 NW - page 15
15 Operation T o T ransmit T o T ransmit Caution! Be sure the antenna is properly connected to the radio befor e transmitting . Prolonged tr ans- mitting without an antenna, or a poorly matched antenna, could cause damage t o the transmitter . Be sure to read the F .C.C. Rules and Regulations included with this unit before transmitting . Select des ...
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Cobra Electronics 25 NW - page 16
Setting D ynamik e This controls the micr ophone sensitivity (outgoing audio level). 16 Setting Dynamike Operation 1 Initially , set fully clock wise so that maxi- mum voice v olume is av ailable. D ynamike may hav e to be reduced in some c onditions. SIG 1 3 5 7 9 +30dB RF MIN MAX MIN MAX OFF LT D CLASSIC ...
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Cobra Electronics 25 NW - page 17
17 Operation T ransmit Push and hold mic button to transmit. T ransmitt er is now activated . When transmit- ting, hold the microphone two inches from your mouth and speak in a clear , normal voice. Release to receiv e. 1 PUSH & HOLD T ransmit RF Meter RF Meter This meter swings proportionately to the RF output (outgoing signal) while transm ...
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Cobra Electronics 25 NW - page 18
18 Operation External Speaker External Speaker The external Speaker jack is used for remote receiver monit oring. 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 automatic ally discon- nected. Note Cobra external speak ers are rated a ...
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Cobra Electronics 25 NW - page 19
19 Operation P A (Public Address) P A (Public Addr ess) Connect an external P A speaker to the P A jack on the rear panel. Note Speaker should have 8-ohm impedance and be rated to handle at least 4.0 watts. Note The speaker should be directed away from the microphone to prevent acoustic feedback. Note Activity on the CB channel will be heard throug ...
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Cobra Electronics 25 NW - page 20
Operation 20 Push and hold microphone button and speak in a normal voice . Y our voice will sound on the P A speak er . Adjust P A speaker volume with the D ynamike control. 3 4 SIG 1 3 5 7 9 +30dB RF MIN MAX MIN MAX OFF LT D CLASSIC PUSH & HOLD ...
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Cobra Electronics 25 NW - page 21
Operation 21 ANL (Automatic Noise Limiter) Switch ANL (Automa tic Noise Limiter) S witch When switched to ANL the Automatic Noise Limiter is activated . This helps reduce noise created by the v ehicle ’ s electronics. SIG 1 3 5 7 9 +30dB RF MIN MAX MIN MAX OFF 25 NW LTD CLASSIC 1 When switched to NB position the RF Noise Blanker is activate ...
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Cobra Electronics 25 NW - page 22
T emporary Mobile Set-Up 22 T emporary Mobile Set-Up T emp orary Mobile Operation F or temporary mobile operation you may wan t to purchase an optional cigarette light er adapter from your C OBRA dealer . This adapter and a mag- netic mount antenna allow y ou to quickly “install” your transceiv er for tempor ary use. ANT PA.SP . EXT .SP . + POW ...
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Cobra Electronics 25 NW - page 23
Home And Office Set-Up 23 Base Station Operation (From 120V AC House Current) Base Station Opera tion (F rom 120V A C House Cur rent) T o operate your transc eiver from home or office you will need a 13.8 volt DC P ow er P ack rated a t a minimum of 2 amps, and a properly installed base station antenna. W arning! Do not attempt to operate this tran ...
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Cobra Electronics 25 NW - page 24
Home And Office Set-Up 24 Connect properly installed and matched base station antenna. Plug power cable int o back of unit marked “P ower” . Be sure to observe polarity mar kings. 2 3 ANT P A.SP . EXT .SP . + POWER – DATE OF MFG : JUNE 98 FCC ID:BBO3K229LTD COBRA MADE IN CHINA SERIAL NO.: 806135776 PRECISION ENGINEERED PRODUCT OF COBRA ...
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Cobra Electronics 25 NW - page 25
How Y our CB Can Serve Y ou 25 1. Set to channel 9 for emergencies Be sure antenna is properly connected . 2. CB Distress Data When transmitting an emergency , you should request a “REACT BASE” and provide the CB distress data (called CLIP ): C all Sign Identify yourself . L ocation Be exact. I njuries Number . T ype. Tr apped? P roblem Give de ...
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Cobra Electronics 25 NW - page 26
How Y our CB Can Serve Y ou 26 The FC C gives these examples of permitted and prohibited messages for channel 9. These are only guidelines and not all-inclusive: P ermitted Example Message Y es “ T ornado sighted six miles nor th of town.” No “Post number 10. No tornado sighted .” Y es “Out of gas on I-95 at mile marker 211.” No “Out ...
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Cobra Electronics 25 NW - page 27
How Y our CB Can Serve Y ou 27 CB 10-Codes Citizen Bands hav e adopted the “ 10-C ODES ”f o r standard questions and answers. These codes provide quick and easy communica tion, especially in noisy areas. Following ar e some of the more common codes and meanings: Code Meaning 10-1 Receiving poorly 10-2 Receiving w ell 10-3 St op transmitting 10- ...
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Cobra Electronics 25 NW - page 28
How Y our CB Can Serve Y ou 28 Code Meaning 10-29 Time is up for contact 10-30 Does not conform to FC C rules 10-33 Emergency traffic 10-34 T rouble at this station 10-35 Confidential information 10-36 Correct time is 10-37 Wrecker needed at 10-38 Ambulance needed 10-39 Message delivered 10-41 Turn to channel 10-42 Tr affic accident at 10-43 Tr aff ...
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Cobra Electronics 25 NW - page 29
Frequency Ranges 29 The C OBRA 25 NW transceiver r epresents one of the most advanced AM tw o-way radios used as a Class D station in the Citizens Radio Ser vice . This unit featur es advanced P hase Lock L oop (PLL) circuitry providing complete cov erage of all 40 CB channels. 1 26.965 21 27.215 2 26.975 22 27.225 3 26.985 23 27.255 4 27.005 24 27 ...
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Cobra Electronics 25 NW - page 30
25 NW Specifications 30 GENERAL CHANNELS . . . . . . . . . . . . . . . . . . . . . . . . CB - 40 CH FREQUENCY RANGE . . . . . . . . . . . . . . . . CB - 26.965 TO 27.405 MHZ FREQUENCY T OLERANCE . . . . . . . . . . . 0.005 % FREQUENCY CONTROL . . . . . . . . . . . . PLL (PHASE L OCK LOOP) SYNTHESIZER OPERA TING TEMPERA TURE RANGE . . . . . . . . . ...
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Cobra Electronics 25 NW - page 31
Limited T wo Y ear W arranty 31 C OBRA ELECTRONICS CORPORA TION warrants that its COBRA CB Radios, and the component par ts thereof , will be free of defects in workmanship and materials for period of two (2) years from the dat e of first consumer purchase. This warranty may be enf orced by the first consumer purchaser , provided that the product i ...
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Cobra Electronics 25 NW - page 32
Optional Accessories 32 Replacement DC P ower Cord For in v ehicle use 426-002-N-001 $7.50 Replacement Mounting Brack et For in v ehicle use 251-199-9-001 $4.50 Replacement Thumb Screws For in v ehicle use 634-081-9-001 $0.60 Replacement Microphone Brack et For in v ehicle use 741-080-9-001 $0.45 38” Base Loaded Magnet Mount Antenna HG A1500 $46. ...
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Cobra Electronics 25 NW - page 33
Y ou Can Find T hese Fine A ccessories A t Y our Local Cobr a CB Dealer If you wish, you can order directly from Cobr a. Order by phone Call 1.773.889.3087 (Press 1 from the main menu) 8 a.m.-6 p .m. M-F CST. Order by mail or fax Please fill out order form on next page, and mail/fax directly to Cobra. Optional Accessories 33 Dynamic External Speake ...
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Cobra Electronics 25 NW - page 34
Accessory Order Form 34 T ax T able Illinois residents add 7% Cook Co . residents add .75% (7.75% total) Chicago residents add 1% (8.75% total) Indiana residents add 5% For cr edit card orders fill out order form and fax to: 1.773.622.2269 or call 1.773.889.3087 (Press 1 from the main menu) 8:00 am - 6:00 pm, M-F , CST . Make check or money order ( ...
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Cobra Electronics 25 NW - page 35
The C obr a line of quality products also includes: • MicroT alk ™ R adios • R adar Detectors • SafetyAlert ® T raffic W arning Syst ems • HighGear ™ CB Acc essories • HighGear ™ P ow er Inv er ters Nothing comes close t o a C obra ™ ...
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Cobra Electronics 25 NW - page 36
Cobra Electronics Corporation 6500 W est Cortland Street Chicago, IL 60707 Cobra Electronics Corp.© 2001 Printed in China Part No. 25 NW MAN For technic al assistance, please call our Automated Help Desk which can assist you by answering the most frequently ask ed questions about Cobra products. (773) 889-3087 24 hours a day , 7 days a week. A Con ...
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Cobra Electronics 25 NW - page 37
25 NW L TD CLASSIC CB Radio “Ingenious Products for Easier C ommunication.” Opera ting Instructions for y our C obra 25 NW L TD CLASSIC 25 NW LTD CLASSIC RF GAIN DYNA DIM ...
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Cobra Electronics 25 NW - page 38
25 NW CB Radio “Ingenious Products for Easier Communication.” Operating Instructions for your Cobr 25 NW RF GAIN DYNA DIM SIG 1 3 5 7 9 +30dB RF MIN MAX MIN MAX OFF LTD CLASSIC The Citizens Band lies between the shortwave broadcast and 10-meter Amateur r adio bands, and was established by law in 1949. The Class D two-way c ommunica ...
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Cobra Electronics 25 NW - page 39
ANT P A.SP . EXT .SP . + POWER – DATE OF MFG : JUNE 98 FCC ID:BBO3K229LTD COBRA MADE IN CHINA SERIAL NO.: 806135776 PRECISION ENGINEERED PRODUCT OF COBRA ELECTRONICS CORP . CHICAGO, ILL.60707 Controls and Indicators A2 1. 4-Pin Microphone Connector 2. Pow er On/O ff/V olume 3. Squelch 4. RF Gain/DynaM ike 5. Dim 6. Channel Selector 7. LED ...
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Cobra Electronics 25 NW - page 40
Thank you f or purchasing the Cobr a 25 NW CB Radio. Properly used , this Cobra product will give you many y ears of reliable service. Cust omer Suppor t Should you encount er any problems with the product or not understand its many featur es, please refer to this o wner ’ s manual. If , after referring to the manual, you still need help, call Co ...
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