This antenna is essentially a base-loaded vertical. This makes it a little more lossy than a center-loaded antenna. The Q of the coil is not as high as they say it is. And the way the coil is made also makes it more susceptible to breakage if the whip were to hit a low-hanging limb. I know one OTR driver who uses one and he says it works okay. In my personal opinion, there are better units on the market. You might look at HiQ, Sierra, and Tarheel.