I will add to FaT Air's comments about the Stealth Hawk. I just built one out of Number 2 solid copper wire, that is 6" x 8" x 15" and was really surprised by how well it worked. I even did a little mobile testing and on top of a hill, I was able to get a NBC station its subchannel CW from a bit over a hundred miles. The cost is minimal and if you don't like it, you are not out much. Conversely, if you do like the results, you got by pretty cheaply.