On Mar 24, 12:53 pm, "rb" wrote:
Got about 60' for a vertical. Using 160'm, any length close to this better
for 160 (up or down)? Idea is to bottom feed it with an antenna tuner.
Yes, radials will be run. Also, will top loading help or hurt?

If you have a 60 ft mast, I'd add a "T" top hat using two wires
that are about 60-70+ feet long each. That would load the
mast with no other coil loading needed. The top wires can
angle down a bit like an inv vee if the supports for the ends
are low. It's possible you may need some matching to the line.
But that can be a simple tapped coil like they use on mobile
whips. Top loading will make a large difference, not only to
reduce the coil loading needed, but it also improves current
distribution. Two wires for a hat are plenty. You will still see
a nearly perfect omni pattern from the antenna.