On Sep 29, 3:44*pm, Owen wrote:
I have been exploring models of a quarter wave monopole over a set of
radials on 80m using NEC4 models.

If my models are valid, and they use 'average ground', the indication is
that while it may require a large number of buried radials (16) before
efficiency levels off a bit, similar efficiency can be obtained with
just three radials elevated more than 100mm above the soil.

This leaves me wondering why the popularity of extensive fields of
buried radials for the lower bands.

Comments?

Owen

Because my vertical is located out in a pasture. Deer, horses, and the
tractor will trip over the wires. Even buried, the tractor tires
brought some up when I mowed the pasture late this summer, especially
when I turned over the radial field.

Paul