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Cobra Electronics 25 LX - page 1
Contents Features ......................................................................................................... 1 The CB Story ................................................................................................. A1 FCC Regulations, FCC Warnings & Included Accessories Controls & Indicators ........................... ...
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Cobra Electronics 25 LX - page 2
Installation Installation Location 3 2 Mounting and Connection Mounting and Connection 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 for the mount- ing screws. Location Plan location of transceiver and microphone bracket before ...
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Cobra Electronics 25 LX - page 3
Installation 5 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 the radio to a ...
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Cobra Electronics 25 LX - page 4
Ignition Noise Interference Antennas Use of a mobile receiver at low signal levels is normally limited by the presence of electrical noise. The primary source of noise in automo- biles 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 ...
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Cobra Electronics 25 LX - page 5
Press the CB/PA button to change modes. Operation 9 Operation Turning On Setting Channel Selector 8 Turning On Make sure the power cord, antenna and micro- phone are connected to their proper connectors before starting. Setting Channel Selector 1 SIG +30dB 1 1 2 3 4 TX PWR 3 5 7 9 MEM NB TX RX VOL SQ OFF DYNAMIKE MIN RF GAIN MIN MAX M E N U P U S H ...
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Cobra Electronics 25 LX - page 6
Rotate the On/Off Volume knob clockwise. The RX icon will be displayed. Operation 11 Operation 10 S-Meter S-Meter Swings proportionately to strength of incoming signal when receiving. Unit should be in CB mode. Rotate channel selector clockwide or counter-clockwise to select desired channel. 1 Selecting A Channel Selecting A Channel To Receive 1 To ...
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Cobra Electronics 25 LX - page 7
PUSH & HOLD Setting Dynamike® This controls the microphone sensitivity (outgoing audio level). To Transmit 13 To Transmit 12 Setting Dynamike ® 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. Be ...
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Cobra Electronics 25 LX - page 8
Operation Operation 15 14 Menu Mode Menu Mode Used to program special features. Menu/Enter knob is used to move cursor to desired feature to program. Rotate Menu/Enter knob clockwise to navigate menu levels. Press Menu/Enter knob to select feature to be programmed. SIG +30dB 1 1 2 3 4 TX PWR 3 5 7 9 MEM NB TX RX VOL SQ OFF DYNAMIKE MIN RF GAIN MIN ...
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Cobra Electronics 25 LX - page 9
Setting the Count Down Timer To set the count down timer, pre ss Menu/Enter knob and select Set Count Down . Follow instructions in Setting the Clock section (page 17) to set count down hour and minutes. Once desired count down time is selected, press Menu/Enter knob again to set and return to the standby menu. Operation 17 16 Operation Setting the ...
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Cobra Electronics 25 LX - page 10
Operation Operation 19 18 Setting Brightness Mode Setting Brightness Mode Press Menu/Enter knob to select Set Brightness Rotate Menu/Enter knob clockwise to Select Brightness . Press Menu/Enter knob to select Day-Bright . Turn Menu/Enter clockwise to increase brightness and turn counter-clockwise to decrease brightness. To set the day bright level, ...
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Cobra Electronics 25 LX - page 11
Operation Operation 21 20 Software Version/Factory Settings Software Version/Factory Settings Displays current software version and returns unit to original factory settings. To view software version, rotate Menu/Enter knob clockwise to select Setting then Software Version . To restore default settings, Press Menu/Enter knob again. Rotate Menu/Ente ...
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Cobra Electronics 25 LX - page 12
23 22 Operation Operation Pressing the Scan/Memory Scan button toggles from Off to Scan All Channels to Memory Channel Only Scan and back to Off . Press Dim/Escape button to end Scan and return to CB mode. 1 Note If more than 10 channels are attempted to be programmed, 3 error beeps will be heard and “Memory Full” will be displayed for 10 secon ...
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Cobra Electronics 25 LX - page 13
Operation Operation 25 24 Full clockwise rotation closes the gate allowing only very strong signals to enter. Full counterclockwise rotation opens the “gate” allowing all signals in. Setting Squelch Squelch is the “control gate” for incoming signals. 2 1 NOISE WEAK SIGNALS MEDIUM SIGNALS STRONG SIGNALS NOISE WEAK SIGNALS MEDIUM SIGNALS STRO ...
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Cobra Electronics 25 LX - page 14
Operation Operation 27 S/RF Meter External Speaker S/RF Meter This meter swings proportionately to the RF output (outgoing signal) and incoming receive signal. 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 e ...
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Cobra Electronics 25 LX - page 15
Operation Operation 29 28 PA (Public Address) PA (Public Address) Connect an external PA speaker to the PA jack on the rear panel. Press CB/PA button to select PA. Push and hold microphone button and speak in a normal voice. Your voice will now transmit on the PA speaker. Adjust PA speaker volume with the Dynamike ® control. Note Speaker should ha ...
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Cobra Electronics 25 LX - page 16
Temporary Mobile Set-Up Home And Office Set-Up 31 30 Base Station Operation (From 120V AC House Current) Temporary Mobile Set-Up Temporary Mobile Operation For temporary mobile operation you may want to purchase an optional cigarette lighter adapter from your COBRA dealer. This adapter and a magnetic mount antenna allow you to quickly “install” ...
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Cobra Electronics 25 LX - page 17
How Your CB Can Serve You 33 32 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 Yes “Tornado sighted six miles north of town.” No “Post number 10. No tornado sighted.” Yes “Out of gas on I-95 at mile marker ...
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Cobra Electronics 25 LX - page 18
How Your CB Can Serve You 35 34 Code Meaning 10-25 Time is up for contact 10-30 Does not conform to FCC rules 10-33 Emergency traffic 10-34 Trouble 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 Traffic accident at 10-43 Traffic ...
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Cobra Electronics 25 LX - page 19
25 LX Specifications 37 36 Frequency Ranges GENERAL CHANNELS CB - 40 CH FREQUENCY RANGE CB - 26.965 TO 27.405 MHZ FREQUENCY TOLERANCE 0.005 % FREQUENCY CONTROL PLL (PHASE LOCK LOOP) SYNTHESIZER OPERATING TEMPERATURE RANGE -30° C TO + 50° C MICROPHONE Plug-in dynamic INPUT VOLTAGE 13.2VDC nom. (positive or negative ground) Current Drain Transmit: ...
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Cobra Electronics 25 LX - page 20
39 38 Optional Accessories 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 chas er, pro vid ed that the product is ut ...
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Cobra Electronics 25 LX - page 21
SIG +30dB 1 1 2 3 4 TX PWR 3 5 7 9 MEM NB TX RX VOL SQ OFF DYNAMIKE MIN RF GAIN MIN MAX M E N U P U S H E N T E R SCAN / M SCAN DIM / ESC CB / PA NB CH9 / 19 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 ...
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Cobra Electronics 25 LX - page 22
Thank you for purchasing the Cobra 25 LX CB Radio. Properly used, this Cobra product will give you many years of reliable service. Customer Support Should you encounter any problems with the product or not understand its many features, please refer to this owner’s manual. If , after referring to the manual, you still need help, call Cobra Custome ...
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