Maximize my cobra18 WT ST

A 102" whip is the best but they're making some pretty good coil antennas now days like the wilson 5000 all the way down to the wilson lil wil also K40 has a pretty good loaded antenna as well as francis.Good luck Dan

A good antenna goes along way for your transmit distants. It does close to 90% of the work on that side of things, but also remember that the radio itself does most of the recieveing. I good antenna brand to stick with is Wilson they make several units but for you a Wilson Little Wil would do the trick. There not real tall about 3' and cost around $40.00. If you want more performance a Wilson 1000 Mag mount is one of the highest performance antenna's on the market but its tall around 5' and cost somewhere around 80.00-90.00 . You can tune the radio and get alittle more out of it but not much, get a good antenna and go from there you will like it. Dont forget that any antenna has to be tuned (swr set) to the vehicle this will insure max performance.