Question about Cobra 25 LTD 40-channel Classic CB Radio With Dynamike Gain Control
Posted by Anonymous on
Take some electrical spray cleaner and lightly spray the inside of the radio where the mic plugs in. could also be a keying diode.
Posted on Nov 25, 2014
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Posted on Jan 02, 2017
SOURCE: Cobra 29GTL Won't Transmit
if the red ant light comes on this means that you have antenna trouble either in the antenna itself or the coax but this should not have anything to do with the radio not transmitting. it sounds to me that you have a bad audio chip or a bad power output transistor. in either case you should really take it to a cb shop and let the professionals solve your problem, good luck!!
Posted on Aug 17, 2007
SOURCE: RED TX and ANT light, Cobra 29
Your post of 2 lights; 1 is to indicate that you are transmitting when keying the mic is normal. The 2nd indicating an antenna warning (or SWR) should be corrected. You are right in starting with the coaxial cable which of course would include the PL259 connector. Verify that there are no breaks, over-bended loop, exposed ground/shield and that the solder of the center wire as well as the braided shield/ground is in order.
If it is a mobile setup, further verify that the antenna mount (except when magnetic) is properly grounded to the body of the vehicle and free from rust/corrosion. In some instances, it is the antenna itself that need checking or even possibly replacement.
Alternately, if the needle doesn't swing to the right side of the meter when the mic is keyed, it is possible that your finals (2SC1306) needs replacement.
Hope this be of some help/idea. Pls post back how things turned out or should you need additional information.
Good luck and kind regards.
Posted on Dec 06, 2007
Check the mike plug to make sure that none of the wires have broke off.I would also check the mike cable with an ohm meter.
Posted on Feb 02, 2009
If the receive works ok,sounds like a mic
problem,try another mic if you can find a
buddy who has a Cobra that may let you
try it most all Cobra mic will work but not all.
Posted on Sep 12, 2009
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