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problem with cobra 29 lx.

Discussion in 'CB Radio Forum' started by biggun, Mar 10, 2014.

  1. Mar 10, 2014 #1
    biggun

    biggun Bobtail Member

    36
    5
    Jan 24, 2014
    broomfield, co
    0
    If I have the cb hooked up to my ant with no swr meter I can use the built in meter and get the swr down to 1.3. It's a Wilson 5000 ant and the coax is a 12 foot mini 8 or whatever they call it. The grey one. I also have a cobra power Mic. But I can't get out very far. Then if I hook up a astatic swr meter that meter is way off. So if I adjust the cal knob on the external meter I can then get it down to about 1.3 also. But then the radio says ant warning and the swr according to the built in meter is over 3. Why is this.
     
    biggun, Mar 10, 2014
    biggun, Mar 10, 2014
    #1
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  3. Mar 11, 2014 #2
    mike5511

    mike5511 Road Train Member

    3,155
    1,546
    May 15, 2011
    NW Arkansas
    0
    I suspect you are doing something wrong. Have you checked youtube for a video on how to properly check you SWR?
     
    mike5511, Mar 11, 2014
    mike5511, Mar 11, 2014
    #2
  4. Mar 16, 2014 #3
    billf947

    billf947 Bobtail Member

    10
    1
    Mar 16, 2014
    toms river nj
    0
    i had a similar problem turned out to be coaxial so i changed it and problem went away
     
    billf947, Mar 16, 2014
    billf947, Mar 16, 2014
    #3
    biggun Thanks this.
  5. Mar 16, 2014 #4
    Gillz909

    Gillz909 Bobtail Member

    17
    4
    Feb 25, 2014
    0
    Double check with a second external swr meter, the internal swr meters can't be trusted, and your suppose to be using an 18 foot coax. As far as the antenna warning on the radio, if you've had the radio tuned to the max, it will continue to come on due to its sensitivity, I've had my swr, checked by a few cb shops just to be on the safe side, and they mentioned the same thing about the warning light. My radio has the RFX75 with the antenna tuned to 1.0 on channels 1-40 and I get a loud and clear from miles away. I've had this radio for a good minute now and it hasn't lost its performance
     
    Gillz909, Mar 16, 2014
    Gillz909, Mar 16, 2014
    #4
    biggun Thanks this.
  7. Mar 16, 2014 #5
    Gillz909

    Gillz909 Bobtail Member

    17
    4
    Feb 25, 2014
    0
    By the way, the warning light still come on, but I ignore it now
     
    Gillz909, Mar 16, 2014
    Gillz909, Mar 16, 2014
    #5
    biggun Thanks this.
  8. Mar 17, 2014 #6
    BigBearNY

    BigBearNY Light Load Member

    160
    37
    Mar 14, 2014
    0
    Did you do a mod that effects the modulation or power on that radio? It can throw off the antenna warning light for sure. Check swr with an external meter and if it's good you can adjust VR6 until the antenna warning light goes out.
     
    BigBearNY, Mar 17, 2014
    BigBearNY, Mar 17, 2014
    #6
    biggun Thanks this.
  9. Mar 18, 2014 #7
    Guvhog

    Guvhog Light Load Member

    69
    10
    Aug 9, 2013
    Pine Bluff, Arkansas
    0
    If the problems persist, I'd have it checked out.
     
    Guvhog, Mar 18, 2014
    Guvhog, Mar 18, 2014
    #7
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