There is a small gauge wire that comes off the antenna. I thought this was the standard for ones that have a tunable tip. It is supposed to be grounded to the antenna clamp only if you cannot get a low SWR reading on Channels 1 and 40. I assume this is something to do with matching the antenna. I'm a novice when it comes to CB's.
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'03 Hummer H2 Adv./Lux. Pkgs. Sunset Orange W/Sunroof
Air Spring Susp. Pkg. + 3rd. row seat & DVD System.
CompuStar Auto Security/Remote Starter.
http://www.haugens.com