Just a reminder that you can download sample models of various LowFER antennas, including flat tops with one through four top wires, from my on-line article at http://www.computerpro.com/~lyle/models/lftxant.htm . The models work in the freeware NF antenna modeling software, and you can do your own comparisons to see the effects of length, width and number of wires in the flat top. Lyle, K0LR