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How to Use Your Cobra 25 LX
Contents
Features .........................................................................................................1
Features of This Product
The CB Story .................................................................................................A1
FCC Regulations, FCC Warnings & Included Accessories
• Selectable 4-Color LCD Display
Controls & Indicators ................................................................................A2
• 40 CB Radio Cha
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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 interfere with the driver 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 desired location. If there is no inter- Note fer
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R E T N E H NB CB / PA S Installation 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 two) to the engine block (or chas- sis). A negatively grounded vehicle has its negative lead 6 Plug power cable into back of unit marked grounded to the chassis. “Power”. Be sure to observe polarity markings. 7 Note Mount the microphone bracket on eith
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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 automo- the transmitter is limited by the FCC, the antenna biles is from the alternator and ignition system. is critical in affecting transmission distance. Only a Typically, when signal level is adequate, the back- properly matched antenna system will allo
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R R R E E E T T T N N N E E E H H H NB NB NB CB / PA CB / PA CB / PA S S S Operation Operation SCAN / M SCAN CH9 / 19 2 3 1 4 TX PWR TX RX Turning On DIM / ESC Turning On Setting Channel Selector Setting Channel Make sure the power cord, antenna and micro- 3 5 7 9 Selector 1 SIG +30dB MEM NB phone are connected to their proper connectors SCAN / M SCAN CH9 / 19 2 3 4 1 TX PWR before starting. TX VOL SQ RF GAIN DYNAMIKE RX Note DIM / ESC Press CB/PA to select CB or PA 3 5 7 1 9 SIG +30dB MEM
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R R R E E E T T T N N N E E E H H H NB NB NB CB / PA CB / PA CB / PA S S S Operation Operation SCAN / M SCAN CH9 / 19 1 2 3 4 TX PWR TX To Receive RX To Receive S-Meter DIM / ESC S-Meter Swings proportionately to strength of incoming 3 5 7 1 9 SIG +30dB MEM NB signal when receiving. VOL SQ RF GAIN DYNAMIKE SCAN / M SCAN CH9 / 19 1 2 3 4 TX PWR TX RX DIM / ESC OFF MIN MAX MIN 5 3 7 9 1 SIG +30dB MEM NB 1 VOL SQ RF GAIN DYNAMIKE Rotate the On/Off Volume knob clockwise. The RX icon will be dis
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R R E E T T N N E E H H NB NB CB / PA CB / PA S S Operation Operation SCAN / M SCAN CH9 / 19 2 3 4 1 TX PWR TX Setting Dynamike® To Transmit Setting To Transmit ® RX DIM / ESC Dynamike This controls the microphone sensitivity SCAN / M SCAN CH9 / 19 3 (outgoing audio level). 3 5 7 1 2 4 1 9 TX PWR SIG +30dB TX MEM NB RX DIM / ESC Caution! VOL SQ RF GAIN DYNAMIKE 3 5 7 9 Be sure the antenna is properly 1 SIG +30dB MEM NB connected to the radio before transmitting. Prolonged trans- VOL SQ RF GA
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R R R R R R E E E E E E T T T T T T N N N N N N E E E E E E H H H H H H NB NB NB NB CB / PA CB / PA CB / PA CB / PA S S S S S S Operation Operation Setting the Clock Menu Mode Setting the Menu Mode SCAN / M SCAN CH9 / 19 Used to program special features. 2 3 4 Menu/Enter Using the clock, alarm and countdown functions. 1 TX PWR Clock TX knob is used to move cursor to desired feature RX To set the clock, press Menu/Enter knob and DIM / ESC Note Note to program. select Set Clock. 3 5
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R R R R R E E E E E T T T T T N N N N N E E E E E H H H H H NB NB NB NB CB / PA CB / PA CB / PA CB / PA S S S S S SCAN / M SCAN CH9 / 19 1 2 3 4 TX PWR TX Operation Operation RX DIM / ESC Once alarm settings are complete, rotate Menu/Enter 5 Setting Display Color Mode 3 7 9 Setting the 1 Setting Display SIG +30dB MEM NB knob clockwise to Set Snooze and press to select. NB/ANL Alarm continued Color Mode 1 CH 9/ 2 3 1.5 SCAN NB/ANL CAL VOL SQ RF GAIN DYNAMIKE SWR 19 Note TX EXIT ANL MEM SC
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R R R R R E E E E E T T T T T N N N N N E E E E E H H H H H NB NB NB NB NB CB / PA CB / PA CB / PA CB / PA CB / PA S S S S S Operation Operation Setting Brightness Mode Key Tones Mode On and Off Setting Key Tones Press Menu/Enter knob to select Set Brightness Press Menu/Enter knob and rotate clockwise Brightness Mode to Set Key Tones. Press Menu/Enter to set Key Mode SET BRIGHTNESS Tones On/Off. Note Note DAY-BRIGHT Press Dim/Escape If an attempt is made to NIGHT-DIM button to return to C
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R R E E T T N N E E H H NB NB CB / PA CB / PA S S Operation Operation Software Version/Factory Settings Software NB/OFF Button NB OFF Button Displays current software version and returns Version/Factory unit to original factory settings. To view software Note SCAN / M SCAN Settings version, rotate Menu/Enter knob clockwise to CH9 / 19 3 1 2 4 TX PWR The RF noise blanker is very TX select Setting then Software Version. effective in reducing repeti- RX DIM / ESC tive noises such as igniti
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R R R R R R E E E E E E T T T T T T N N N N N N E E E E E E H H H H H H NB NB NB NB NB NB CB / PA CB / PA CB / PA CB / PA CB / PA CB / PA S S S S S S Operation Operation Program Memory Program Memory Channels Scan CB Channels Scan CB Channels To scan all 40 CB channels, the unit must be Set first channel. Press and hold Scan/MemScan Channels squelched. Press and release Scan/Mem Scan Note button. Memory icon will appear. Select second button once. channel, press and hold Scan/MemScan button
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R R R E E E T T T N N N E E E H H H NB NB NB CB / PA CB / PA CB / PA S S S SCAN / M SCAN CH9 / 19 2 3 4 1 TX PWR TX Operation Operation RX SCAN / M SCAN DIM / ESC CH9 / 19 2 3 1 4 TX PWR TX 3 5 7 9 1 SIG +30dB RX MEM NB DIM / ESC Setting Squelch Setting Squelch Setting Squelch Squelch is the “control gate” for incoming signals. 3 5 7 9 1 SIG +30dB VOL SQ RF GAIN DYNAMIKE Gate closed MEM NB Gate set to Desired Squelch Setting (DSS) STRONG SIGNALS VOL SQ RF GAIN DYNAMIKE STRONG SIGNALS OFF MIN
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R E T N E H NB CB / PA S Operation Operation S/RF Meter External Speaker External Speaker S/RF Meter This meter swings proportionately to the The external speaker jack is used for remote RF output (outgoing signal) and incoming receiver monitoring. receive signal. Note SCAN / M SCAN The external speaker should CH9 / 19 2 3 4 1 have 8-ohm impedance and TX PWR TX be rated to handle at least 4.0 RX watts. When the external speak- DIM / ESC er is plugged in, the internal speaker is automatic
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R R E E T T N N E E H H NB NB CB / PA CB / PA S S Operation Operation PA (Public Address) PA (Public Address) PUSH & Note HOLD 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 SCAN / M SCAN prevent acoustic feedback. CH9 / 19 1 3 1 2 4 Connect an external PA speaker to the PA jack TX PWR TX on the rear panel. 3 Note Push and hold microphone button and speak RX DIM / ESC in a normal voice. You
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Home And Office Set-Up Temporary Mobile Set-Up 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 13.2 volt DC Power Pack rated at House Current) a minimum of 2 amps, and a properly installed base station antenna. 2 Plug power cable into back of unit marked “Power”. Be sure to observe polarity markings. Warning! 3 Connect properly installed and matched base Do not attempt to oper
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How Your CB Can Serve You How Your CB Can Serve You • Warn of traffic problems The FCC gives these examples of permitted and • Provide weather and road data prohibited messages for channel 9. These are • Provide help in event of an emergency only guidelines and not all-inclusive: • Provide direct contact with home or office • Assist police by reporting erratic drivers Permitted Example Message • Get “local information” to find destination • Communica
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How Your CB Can Serve You Code Meaning CB 10-Codes 10-25 Time is up for contact Citizen Bands have adopted the “10-CODES” for 10-30 Does not conform to FCC rules standard questions and answers. These codes 10-33 Emergency traffic provide quick and easy communication, especially 10-34 Trouble at this station in noisy areas. Following are some of the more 10-35 Confidential information common codes and meanings: 10-36 Correct time is Code Meaning 10-37 Wr
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Frequency Ranges 25 LX Specifications GENERAL CHANNELS CB - 40 CH The Cobra 25 LX transceiver represents one of the FREQUENCY RANGE CB - 26.965 TO 27.405 MHZ FREQUENCY TOLERANCE 0.005 % most advanced AM two-way radios used as a Class FREQUENCY CONTROL PLL (PHASE LOCK LOOP) SYNTHESIZER D station in the Citizens Radio Service. This unit OPERATING TEMPERATURE RANGE -30° C TO + 50° C features advanced Phase Lock Loop (PLL) circuitry MICROPHONE Plug-in dynamic providing complete cover age o
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Limited Two Year Warranty Optional Accessories You can find quality Cobra products and accessories at your local Cobra dealer, or in the U.S.A., you can order directly from Cobra. See ordering info on page 38. COBRA ELECTRONICS CORPORATION warrants that its Cobra CB Radios, and the com po nent parts thereof, will be free of defects in workmanship and materials for period of two (2) years from the date of first consumer purchase. This war ran ty may be enforced by the first consumer pur c
