Cobra 21 LTD ST Operating Instructions Manual Download | Manualshive

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OPERATING INSTRUCTIONS FOR YOUR

40 CHANNEL

CITIZENS BAND

2-WAY MOBILE RADIO

Model

21 LTD ST

Cobra Electronics Corporation

6500 W. Cortland Street

Chicago, IL 60707

PRINTED IN HONG KONG

©COBRAELECTRONICS CORP. 1997

480-221-P-001

21LTDST.MANUAL.REV.QX 9/25/98 10:59 AM Page 1

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Summary of Contents for 21 LTD ST

Page 1: ... CHANNEL CITIZENS BAND 2 WAY MOBILE RADIO Model 21 LTD ST Cobra Electronics Corporation 6500 W Cortland Street Chicago IL 60707 PRINTED IN HONG KONG COBRAELECTRONICS CORP 1997 480 221 P 001 21LTDST MANUAL REV QX 9 25 98 10 59 AM Page 1 ...

Page 2: ...ption of signals and more powerful transmissions which dramatically improve CB Communications All transmitter adjustments other than those supplied by the manufacturer as front panel operating controls must be made by or under the supervision of the holder of an FCC issued general Radio Telephone Operator s License Replacement or substitution of transistors regular diodes or other parts of a uniqu...

Page 3: ...M Power Output 4 watts into external speaker External Speaker for PA 8 ohms when PA CB switch is in PA the PA speaker Not Supplied also monitors the receiver separate jack provided SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE 3 FREQUENCY RANGE The COBRA21 LTD ST transceiver represents one of the most advanced AM two way radios ever designed for use as a Class D station in the Citizens Radio Ser...

Page 4: ...r or near it using two screws supplied When mounting in an automobile place the bracket under the dash so the microphone is readily accessible Installation Location Plan the location of the transceiver and microphone bracket before starting the installation Select a location that is convenient for operation and does not inter fere with the driver or passengers in the vehicle In automobiles the tra...

Page 5: ...ble power output of the transmitter is limited by the FCC the antenna is one important factor affecting transmission distance Only a properly matched antenna system will allow maximum power transfer from the 50 ohm transmission line to the radiating element In mobile installations cars trucks boats etc an antenna system that is non directional should be used A vertically polarized quarter waveleng...

Page 6: ...MICROPHONE CONNECTOR Front panel microphone connector 2 OFF ON VOLUME Turn clockwise to turn power on and set the desired listening volume 3 SQUELCH This control is used to cut off or eliminate receiver back ground noise in the absence of an incoming signal For maximum receiver sensitivity it is desired that the control be adjusted only to the point where the receiver background noise or ambient b...

Page 7: ...er are controlled by the Press to Talk switch on the microphone Press the switch and the transmitter is activated release the switch to receive When transmitting hold the microphone two inches from the mouth and speak clearly in a normal voice The microphone provided with your radio is a detachable low impedance dynamic type Operation Cont Operation Cont 10 C Rear Panel 1 PUBLIC ADDRESS An externa...

Page 8: ...nnel will be heard through the PA speaker SOUNDTRACKER SYSTEM While previous systems only blanked out or limited noise in higher sound frequencies the revolutionary new SoundTracker System actually reduces noise while leaving the signal intact in the reception mode In the transmission mode it actually strengthens the signal providing you with a significant reduction in noise on reception and trans...

Page 9: ...his same number 8 00 am 8 00 pm Monday through Friday CST Technical assistance is also available on line in the Frequently Asked Question FAQ section at www cobraelec com or by e mail to productinfo cobraelec com Maintenance and Adjustment Appendix Citizens Band radio operators have largely adopted the 10 code for standard questions and answers Its use permits faster communications and better unde...

Page 10: ... com or by e mail to productinfo cobraelec com If You Think You Need Service Call 773 889 3087 If your product should require factory service please call Cobra first before sending your unit in This will ensure the fastest turnaround time on your repair You may be asked to send your unit to the Cobra factory It will be necessary to furnish the following in order to have the product serviced and re...

Page 11: ... shall not be liable for any incidental consequential or other damages including without limitation damages resulting from loss of use or cost of installation Some states do not allow limitations on how long an implied warranty lasts and or do not allow the exclusion or limitation of incidental or consequential damages so the above limitations may not apply to you This limited warranty gives you s...

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