Question about Cobra 29 WX NW ST 40-Channels Base CB Radio

2 Answers

Poor reception when i talk on the radio i can only talk to someone for about a 1/4 mile and i loose contact i do not hear a lot of sound from the radio unless the person is close bye, i have the rf gain and squelch turned up all the way, the ant. is a wilson 2000 and the wire seems ok the whole setup is about 8 yrs old, i hear a noise when the radio is on it almost sounds like electrical is turning on and off like when you step on the brake and the lights come on it clicks in the radio also the swr meter is not working the meter doen't work at all, the lights in the radio do not work but i read the responce for you with one of your other customers on that issue. what do you think is the problem is it just age???? the setup did sit in my garge for about 3yrs.

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  • christopher jolly Nov 13, 2007

    installed a new k-40 ant. and new wire system seems to work 100% better.

  • tazman13 Dec 15, 2007

    when the squelch is right off no noise comes out of the speakers and the cb itself has very limited range .. about 1/4 of a mile

  • perrys May 04, 2008

    Cobra 29 wx/nw..Brand new,just installed in a Columbia Freightliner.Only 1/4 mile or so reception.Antenna's are stock and I go way over 3 when I try to calibrate this. Also no noise on the speaker when the squelch is turned.

    This is frustrating.I just took my old Cobra 29 out of my Classic which I was getting 5/7 mile range and the same problem in this tractor. No range at all.

    Any help would be appreciated.

    Thanks

  • Steve Tompkins
    Steve Tompkins Feb 25, 2013

    Sometimes finals go bad sitting around..Get a watt meter. Test its power it should put out atleast around 10 watts Rf factory and SWR should be at 1.5 or less to 1.1 on a meter. It should get atleast 5 to 10 miles range if antenna is up atleast 15 feet in the air outdoors or on a rooftop of a car. Dead center the roof is best on a vehicle the wave spread out at 360 ' radius equal in center of metal.

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Better antenna located higher up.Make sure its 50 feet from the house or other objects & power lines. I just used an Antron A99 17'4 ft antenna at $59 with 50 ft RG213u or RG59 coax on a 30 feet tv pole and got ranges of 20 to 50 miles easy using a small car radio Uniden 76xl in my bedroom on a Radio Shack 12 volt DC 3 amp power supply..In a car a magnet mount in center of roof will do a good job. www.copperelectronics.com has antennas,coax,microphones,radios,power,mics. etc.

Posted on Mar 07, 2013

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Sounds as though You have a bad antenna system ( may be bad coax ). Unless there is infact something wrong with the radio ( this is unlikey) you need to have the SWR's ( Standing Wave Ratio ) checked and trouble shoot the antenna problem. Although the ST seems to be ( In my opion ) the worst recieve radio Cobra could develope, they normally work to a good standard. As for the meter not working, this may also be lack of a good signal from the ant problem. If infact the antenna and coax is good, then take a close look at the output ( final ) transistor. If it's shorted, it doesn't receive well nor does it transmit well.
Good Luck
Ed
NC Electronic
Mills, Wyoming

Posted on Jan 07, 2008

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