CB radio/antenna HELP

Discussion in 'CB Radio Forum' started by cj301, Jul 10, 2022.

  1. cj301

    cj301 Bobtail Member

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    May 10, 2020
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    Hi I’m looking for some additional advice on some issues I’m having on a 2007 kenworth t800 triaxel dump truck It still has the factory co phase antenna wire I believe I just recently put brand new studs and soldered new pl259 connectors on both sides and have 2 sr2k Stryker antennas with the 5” rod I then used a another 9 ft coax to tune both antennas separately with my meter on I have 1.5 swr on both antennas when I put my meter on after both antennas are connected with co phase hopped up my meter is about 1.3 on 1 and 1.6 on 40 I then proceeded to install my connex 3300hp into the truck witch i new believe I burnt out my finals i new have a cobra 20lx and the radio is receiving when I put the windows up or plug something into the cigarette liter this was also happening with my connex I only had the radio in for a short period of time so I’m woundering if anyone else has had a similar issue and what did u do or if anyone knows what’s going on,,,thanks
     
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  3. Night Stalker10

    Night Stalker10 Road Train Member

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    Jun 26, 2017
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    Sounds like you have an RF ground issue, which is a common problem with these trucks today. After installing the pl259's did you check them for open or shorts with an ohm meter? Chances are they are okay since your swr readings are okay.

    When it comes to co-phased antennas I always adjust them together rather than using the single coax method. That's because all coax isn't the same and it can give you a different reading on your external swr meter. If you adjust or trim the driver antenna by 1/4 of an inch, adjust the passenger antenna the same before testing the swr. Also use 4 ft antennas or longer. Guess I'm not familiar with a cobra 20lx radio.
     
  4. craig_sez

    craig_sez Road Train Member

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    The lx is a normal 29 with a digital like front end and a few more options..
     
  5. Night Stalker10

    Night Stalker10 Road Train Member

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    Ya I assumed he meant the Cobra 29 but called it a cobra 20.
     
  6. craig_sez

    craig_sez Road Train Member

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    You assumed correct sir..
     
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