Gene Fuller wrote:
How do you know there is no corona discharge?

Because under passive fairweather conditions, corona
requires 13 magnitudes more current than is available
in nature. Please see my other posting.

And just a comment on your seeming innocent question
above. You seem to be asking me to prove that there
is no corona discharge when proving a negative is
impossible. The onus of proof is upon the one(s) who
assert(s) the positive position.

W8JI asserted that there is a corona discharge and
you agreed with him. Therefore, the onus of proof
is upon you. Please prove that corona can exist
on a receiving antenna under passive fairweather
conditions.

People are free to assert negatives at any time
without any proof. For instance, if I assert that
you cannot dunk a basketball, my assertion will
remain true until you prove that you can dunk
a basketball.
--
73, Cecil http://www.qsl.net/w5dxp