"Richard Harrison" wrote
Brown, Lewis and Epstein would be disappointed with your radials. Shoot
for the broadcast practice of (120) evenly distributed around from the
tower base.
_________

BL&E's 1937 measurements show (Fig 30) that a vertical monopole of 25 to 90
electrical degrees used with 113 buried radials each of 0.412 wavelength
produced a measured groundwave field within a few percent of the theoretical
maximum for such radiators over a perfect ground (notwithstanding that the
conductivity at their test site was around 4 mS/m).

In Fig 32 of that paper it can be seen that if the 113 radials are only
0.274-wavelengths long, then at the 25-degree electrical height of this Rohn
tower, the measured field was about 79% of theoretical field over a perfect
ground.
..
So it's not just the number of radials that is important, but also their
length.

The referenced figures are linked below, under the "fair use" provisions of
copyright law.

http://s62.photobucket.com/albums/h8...BLERadials.gif

RF