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Antenna troubles with Pete 387

I have a 2000 Peterbilt 387. I bought a 59" center coil whip because the fiberglass antenna wasen't working well. The antenna mount is on the drivers side upper sleeper area. I put the antenna on and bent it back so it was not too high. The swr is around 4 on channel 1 and 5 on 40. Has anyone had luck with using the factory mount? I know I have to shorten the whip, but with an initial reading that high, will it get much better. Plus i am using the swr meter that is on the cobra 29. It seems that I have decent output, but if the other driver is more than like half a mile away I lose him, plus my gain is maxed too. I am just a driver so Im kind of stuck using the factory mount. There are none on the mirror.

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Yes my was rewired as well, then the new antenna. Our mechanic mentioned putting a ground stap on it. Not sure if that will work. Will let you know. Thanks

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I have a cascadia and could not get swr to set (was all across board) took to a cb shop tried several antennas ended up with a wilson fiberglass. Had to mount on the bar on back of sleeper. Your foctory mount does not get good ground.

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I run a cascadia & have same trouble, many have told me that the 387 is the only worse truck for antenna mounting.

We tried reworking the coax all the way to the mount, but it still was not much better, getting to much refletion from cab.

Have ordered mounts from eBay for our cascadia....

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I have been told by multiple CB shops that Peterbilt did not ground their antenna wires or that the ground in the system is poor. Also if you have a dual antenna configuration your need two antenna one for each mount. Other wise the mount without antenna acts like a bad antenna. Personally I took off my Factory mounts and put on the driver mirror. I drilled and tapped in the break away arm and ran my own line from the mount to the CB. Good Luck!

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I ran a KW T2000 that had a similar setup to the 387...they use coax that is more suitable for TV reception than for CB reception in the factory install. Best solution I have used and have suggested is to NOT use the factory equipment at all. Run a 18' section of coax (it must be in 3' increments to get your swr right) directly to a SINGLE antenna. Dual antennas will direct your signal to go left/right which decreases the forward/rear range. Do not coil up the slack, simply keep running it around to different areas if you need to, or go with a shorter piece. I use a Wilson 5000 on the drivers side bracket of my W900, and I get more reception than I want, but I'm running a RCI2970DX with 200 watts too. Nevertheless, this should improve your range. I had no luck trying to use the stock bracket on my T2000, which is the same as on your 387, so I installed a separate bracket on the back air faring brace on the driver's side and it worked great. Good luck.

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Peterbilt's use the antenna for the CB and the stereo. There is an adapter box in the overhead where the wires run. You have to use a special antenna that is set up for the CB and the stereo for either to work properly. An antenna for just a CB will not work correctly.

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Well I have solved the issue. I ran a new ground and now swr is at 1. Thanks for all of your help

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pricey59 will be eternally grateful.
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