Hassan Schiers wrote:
"--and 16 radials on 80m are quite sufficient over my type of soil."

Glancing at Fig. 2.17 on page 119 of Laport`s "Radio Antenna
Engineering" shows that BL&E would agree.

1000 watts into a 90-degree vertical with 16 radials will produce about
160 mv/m at one mile. Perfection is only about 190 mv/m. 85% should be
close enough to perfection, unless you are a broadcaster or the FCC
enforcing its rules on a broadcaster.

Best regards, Richard Harrison, KB5WZI