The Gap Titan antenna does not require ground radials, so they
say. Gap makes a number of antennas including one that covers
160 meters, but it's 45 feet tall and has a capacitance hat on
it. The Titan is a 25 foot antenna that covers 10 through 80
meters and costs $429 I think. Would be interested in feedback
about Gap antennas if anyone has information on them. Jim WA6EKS