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Old June 23rd 06, 09:50 PM posted to rec.radio.amateur.antenna
John - KD5YI
 
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Default Noise level between two ant types

Cecil Moore wrote:
John - KD5YI wrote:

Well, suppose you have a #18 ga stranded wire composed of 7 strands of
#26. One strand is sticking up all by itself. The end of the strand
(if cut off squarely) is about 0.0013 cm^2. So a current flow of 0.13
uA from the end of this strand is 100 uA/cm^2.



We can suppose all sorts of conditions to obtain corona.
There's absolutely no argument about that. The argument
is whether corona occurs 100% of the time on any and all
antennas with charged particle static. If corona occurs
only 99.9% of the time, the corona gang loses the argument.

The argument is whether corona *always* accompanies charged
particle noise. That's an exclusive assertion that there
exists no cases where corona doesn't accompany charged
particle noise.

I fully agree that corona *often* accompanies charged particle
noise but that's an inclusive assertion.

If enough particles hit the antenna to just
barely hear the noise on a receiver, the corona crowd says
that corona caused the noise. I would like to see some proof
for such a statement so far out of mainstream physics.

Can we suppose a condition where corona won't happen?
How about a #14 solid wire with rounded ends? Do you think
it could build up enough charged particle noise to be heard
in a receiver without the existence of corona?



I applied simple arithmetic to show that 100 uA/cm^2 is almost meaningless
because there are conditions much more favorable to the generation of corona
to consider. If I am wrong, please correct me.

Frankly, I think you should try to make up a condition that refutes your own
suppositions and see if it flys. If it does, then think of something else. I
do that all the time. Sometimes I learn, and sometimes I don't. I try to
temper my investigations by asking questions.

Why #14 with rounded ends? Because it supports your position? Why not
suppose smaller wire and sharper points? Make some calculations for us to
review. Use the worst case against yourself, then show why it cannot be so.

Frankly, Cecil, I have been somewhat of a follower of yours for some time.
You have some thought-provoking ideas and comments, but I am beginning to
believe that your entire purpose is to argue. I wish it wasn't so.

John