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OPERATING INSTRUCTIONS FOR YOUR 40 CHANNEL CITIZENS BAND 2-WAY MOBILE RADIO Model 25 LTD ST Cobra Electronics Corporation 6500 W. Cortland Street Chicago, IL 60707 PRINTED IN HONG KONG ©COBRA ELECTRONICS CORP. 1997 480-205-P-001
OPERATING INSTRUCTIONS FOR YOUR 40 CHANNEL CITIZENS BAND 2-WAY MOBILE RADIO Model 25 LTD ST Cobra Electronics Corporation 6500 W. Cortland Street Chicago, IL 60707 PRINTED IN HONG KONG ©COBRA ELECTRONICS CORP. 1997 480-205-P-001
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... Your Citizens Band 2-Way Mobile Radio Model 25 LTD ST Contents Page The CB Story 1 SoundTracker System 1 Specifications 2,3 Installation Location 4 Mounting Connections 4, 5 CB Antenna 6 Ignition Noise Interference 7 In House Operation 7 Operation Controls and Indicators 8, 9, 10 Operating Procedure to Receive 11 Operating Procedure to Transmit 12 How SoundTracker Works 13 Maintenance and Adjustment 14 Appendix Ten Code 15 A Few Rules That Should...
... Your Citizens Band 2-Way Mobile Radio Model 25 LTD ST Contents Page The CB Story 1 SoundTracker System 1 Specifications 2,3 Installation Location 4 Mounting Connections 4, 5 CB Antenna 6 Ignition Noise Interference 7 In House Operation 7 Operation Controls and Indicators 8, 9, 10 Operating Procedure to Receive 11 Operating Procedure to Transmit 12 How SoundTracker Works 13 Maintenance and Adjustment 14 Appendix Ten Code 15 A Few Rules That Should...
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... YOUR SALES RECEIPT, CARTON AND PACKING FOR POSSIBLE FUTURE USE. 2 Specifications (cont.) GENERAL Channels Frequency Range Frequency Control Frequency Tolerance Operating Temperature Range Microphone Input Voltage Current Drain Size Weight Antenna Connector Semiconductors Meter TRANSMITTER Power Output Modulation Frequency Response Output Impedance RECEIVER Sensitivity Selectivity Image Rejection Adjacent-Channel Rejection IF Frequencies Automatic Gain Control (AGC) RF Gain Control Noise Blanker Squelch Audio Output Power Frequency Response Distortion Built-in audio output...
... YOUR SALES RECEIPT, CARTON AND PACKING FOR POSSIBLE FUTURE USE. 2 Specifications (cont.) GENERAL Channels Frequency Range Frequency Control Frequency Tolerance Operating Temperature Range Microphone Input Voltage Current Drain Size Weight Antenna Connector Semiconductors Meter TRANSMITTER Power Output Modulation Frequency Response Output Impedance RECEIVER Sensitivity Selectivity Image Rejection Adjacent-Channel Rejection IF Frequencies Automatic Gain Control (AGC) RF Gain Control Noise Blanker Squelch Audio Output Power Frequency Response Distortion Built-in audio output...
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... the standard receptacle on back of the transceiver and microphone bracket before starting the installation. Installation (Cont.) 3. In automobile instal- Plug power cable into jack on the unit. Mounting and Connection The transceiver is usually obtained from the accessory contact in location. The mounting must be used. Most CB antennas are terminated with a type PL-259 plug which mates...
... the standard receptacle on back of the transceiver and microphone bracket before starting the installation. Installation (Cont.) 3. In automobile instal- Plug power cable into jack on the unit. Mounting and Connection The transceiver is usually obtained from the accessory contact in location. The mounting must be used. Most CB antennas are terminated with a type PL-259 plug which mates...
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... COBRA 25 LTD ST has an automatic noise limiter, in a boat, consult your transceiver for the purpose. This adapter and a magnetic mount antenna allow maximum power transfer from the alternator and ignition system in the hull and water. 3-Way Combination Antennas are highly recommended for further information. Only a properly matched antenna system will not significantly discharge the vehicle battery. Installation...
... COBRA 25 LTD ST has an automatic noise limiter, in a boat, consult your transceiver for the purpose. This adapter and a magnetic mount antenna allow maximum power transfer from the alternator and ignition system in the hull and water. 3-Way Combination Antennas are highly recommended for further information. Only a properly matched antenna system will not significantly discharge the vehicle battery. Installation...
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... noise. 9. Adjust until the receiver noise disappears. This control is always on to cut off or eliminate receiver back- This switch selects any one of the incoming signal during receiving. Swings proportionally to turn power on the selected frequency. RF-METER. The PA...directly above the channel selector knob. 7. Further clockwise rotation will require the incoming signal to be red. 8 9 This controls the gain to the RF output power while transmitting. 8. BRT/DIM SWITCH: Controls brightness of the LED channel indicator and the multi-function meter, for optimum ...
... noise. 9. Adjust until the receiver noise disappears. This control is always on to cut off or eliminate receiver back- This switch selects any one of the incoming signal during receiving. Swings proportionally to turn power on the selected frequency. RF-METER. The PA...directly above the channel selector knob. 7. Further clockwise rotation will require the incoming signal to be red. 8 9 This controls the gain to the RF output power while transmitting. 8. BRT/DIM SWITCH: Controls brightness of the LED channel indicator and the multi-function meter, for optimum ...
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...now properly adjusted. Set the RF GAIN CONTROL fully clockwise. 4. Rotate SQUELCH CONTROL counterclockwise until incoming signal is activated; Set VOLUME CONTROL to Receive 1. SOUNDTRACKER™ SWITCH. B. Press the switch and the transmitter is heard. 6. When transmitting, hold the microphone two inches... CHANNEL DISPLAY. The speaker should be connected properly. The polarized plug ensures that the power cord, antenna and microphone are controlled by depressing the button labeled ST. The PA/CB should be con- Turn the radio ON by rotating the VOLUME CONTROL clockwise. 3. Turn ...
...now properly adjusted. Set the RF GAIN CONTROL fully clockwise. 4. Rotate SQUELCH CONTROL counterclockwise until incoming signal is activated; Set VOLUME CONTROL to Receive 1. SOUNDTRACKER™ SWITCH. B. Press the switch and the transmitter is heard. 6. When transmitting, hold the microphone two inches... CHANNEL DISPLAY. The speaker should be connected properly. The polarized plug ensures that the power cord, antenna and microphone are controlled by depressing the button labeled ST. The PA/CB should be con- Turn the radio ON by rotating the VOLUME CONTROL clockwise. 3. Turn ...
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... receive. Be sure the operator has read and understands part 95, F.C.C. Set the DYNAMIKE control fully clockwise. 4. Be sure the antenna is improved transmission signal clarity and an expanded transmission range. 12 13 Prolonged transmitting without an antenna, or a poorly matched antenna, could cause damage to the radio before transmitting. Connect a PA speaker to -noise ratio, the better...
... receive. Be sure the operator has read and understands part 95, F.C.C. Set the DYNAMIKE control fully clockwise. 4. Be sure the antenna is improved transmission signal clarity and an expanded transmission range. 12 13 Prolonged transmitting without an antenna, or a poorly matched antenna, could cause damage to the radio before transmitting. Connect a PA speaker to -noise ratio, the better...
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... Ò10-codeÓ for advice. Maintenance and Adjustment The COBRA CB transceiver is specifically designed for maximum protection. Should a failure occur, however, review the following correct procedure and that the radio was properly installed, etc. The main power lead (red wire) has a 2 Amp 3AG type fuse in its light weight result in mobile installations. Make certain the microphone is next message...
... Ò10-codeÓ for advice. Maintenance and Adjustment The COBRA CB transceiver is specifically designed for maximum protection. Should a failure occur, however, review the following correct procedure and that the radio was properly installed, etc. The main power lead (red wire) has a 2 Amp 3AG type fuse in its light weight result in mobile installations. Make certain the microphone is next message...
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...as you travel. • Provide Òlocal informationÓ to find you as United Parcel Service (UPS), Roadway Parcel Service (RPS) or First Class Insured Mail to use the channel. 2. It will either be returned. 4. For Warranty Repair, include some form of proof-of emergency or... product serviced and returned. 1. You are not allowed to use the original packing material. 5. This will automatically be returned. 2. Technical assistance is happening with illegally amplified transmitter power or illegally high antennas. 3. You are not allowed to carry on the model. You...
...as you travel. • Provide Òlocal informationÓ to find you as United Parcel Service (UPS), Roadway Parcel Service (RPS) or First Class Insured Mail to use the channel. 2. It will either be returned. 4. For Warranty Repair, include some form of proof-of emergency or... product serviced and returned. 1. You are not allowed to use the original packing material. 5. This will automatically be returned. 2. Technical assistance is happening with illegally amplified transmitter power or illegally high antennas. 3. You are not allowed to carry on the model. You...
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... order form to : Cobra Accessories Dept. 6500 W. DYNAMIC MICROPHONE Replacement microphone with 4-pin screw-on how long an implied warranty lasts and/or do not allow limitations on connector CA-73 DC POWER CORD Exact replacement 426-002-N-001 MOUNTING BRACKET Exact replacement 251-199-9-001 MOUNTING BRACKET SCREWS Exact replacements 634-081-9-001 POWER MICROPHONE Amplified power mic CA-75 POWER/NOISE-CANCELLING MICROPHONE Amplified power mic with noise-cancelling...
... order form to : Cobra Accessories Dept. 6500 W. DYNAMIC MICROPHONE Replacement microphone with 4-pin screw-on how long an implied warranty lasts and/or do not allow limitations on connector CA-73 DC POWER CORD Exact replacement 426-002-N-001 MOUNTING BRACKET Exact replacement 251-199-9-001 MOUNTING BRACKET SCREWS Exact replacements 634-081-9-001 POWER MICROPHONE Amplified power mic CA-75 POWER/NOISE-CANCELLING MICROPHONE Amplified power mic with noise-cancelling...
