Dear Tom:
Thank you for your ideas and the reference.

Let us leave it that we see things differently. Readers have the
ability to learn from contrasting each of our viewpoints.

I have always included my E-mail address in my communications.

I must to bed - tomorrow is the last lab day of the semester and I
anticipate many questions directed to the proximate final exams.

73, Mac N8TT

--
J. Mc Laughlin; Michigan U.S.A.
Home:
wrote in message
ups.com...
J. Mc Laughlin wrote:

It appears that two noise mechanisms exist. The two are P-noise and
corona noise. A receiver will experience close to white noise in both
cases. However, corona noise tends to be accompanied by sudden stops
and
starts and P-noise starts with a sequence of perceptibly time spaced
pops
that increase in rate.

Pops are caused by something charging and flashing over. All it takes
to eliminate pops is a leak resistance or a leak choke slow enough to
keep the antenna from charging.

I've never heard the slow popping noise called P-static by anyone I
know, but that doesn't say some people don't call it that.

I have dipole high in the air, and on a clear day with a fair breeze
they will knock someone right on their butt if the feeder is unhooked
and the antenna allowed to charge. It does that dust or no dust,
although nasty weather seems to greatly increase charge rate.

It's easy to see why that happens.

http://www.who.int/peh-emf/publicati...d_Exposure.pdf

There is a significant electric field as we increase height even in
fair weather. Even though that is a very high impedance field, it
doesn't take air movement to charge a high conductor that is
well-insulated.

I have offered an alternative explanation for why, absent corona,
higher
antennas might well experience more noise.

True, but a height change of just a few meters on a building or tower
hundreds of meters tall makes a big difference as do sharp compared to
blunt points on an antenna.

During a rainstorm, when most people complain about corona, droplets
from the very same sources are hitting lower and upper antennas. The
noise does NOT follow the pattern or rate of raindrops hitting the
antenna, and the upper antenna is always significantly noisier than the
lower antenna.

Actual precipitation (rain, snow, hail) is not needed for
P-noise.

Of course not. It is a voltage gradient problem.

Moving dust particles can carry charge and become charged. The noise
does
follow the "pattern of the particle rate."

I've never seen it do that. But I'll keep watching for it.

P.S. Some months ago you asked about V antennas for low HF or MF use
involving a 300 foot tower. I found that an interesting topic and did
some
analysis, which I tried to sent to you. Unfortunately, the E-mail
address
did not work.

That's because the email address listed by Google for me is a dead
address. If it was live, it would be useless with spam and virus.

73 Tom