[TowerTalk] snow static, Quad v. Yagi

[Jim Rhodes]

Tom, if they cannot discharge to air, what exactly is corona?

At 03:25 PM 9/1/2004, Tom Rauch wrote:
> > It's not charging from the air, it's charging from the
>particles, which DO
> > have a potential relative to their surroundings (i.e. the
>air).
>
>I understand all that Jim. We are just going to have to
>disagree.
>
>I don't believe dust can accumulate enough charge in a wire
>with even very small amounts of leakage to earth to have
>corona right back out to the very media supporting the
>particles that are charging it. The fields don't want to
>work that way. If they did, the dust or charges in the dust
>would soon be repelled from the area of the wire and the
>charge transfer into the wire would stop.
>
>The conductors arc or leak to earth if insulated from earth.
>
>The conductors leak or arc to the sky if the clouds have
>high enough charge.
>
>This is why grounding masts or antennas does not stop
>corona. If anything, it only makes it worse. This is why a
>floating conductor with almost perfect insulation will
>eventually reach enough potential to flash over to ground,
>even when it has no corona.
>
>73 Tom
>
>
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>
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Jim Rhodes K0XU
jim at rhodesend.net

Experience is the thing you have left when everything else is gone.