I got an SWR around 1.5. The dealer that sold me the radio and antenna did the match for me at no charge. Apparently an SWR of 1.0 is the best. Mine was originaly 1.7 - 1.8, the dealer tuned my tip and played around abit and got 1.5. Good enough for me and for what I use it for. It took him about 5 minutes.
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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