On 9 Nov 2005 03:28:31 -0800, "SpamHog" wrote:

I forgot to mention... the grounding is via two massive, parallel
steel flue lines, each a foot in diameter, that drop straight to a big
pig-iron furnace underground, all bonded to the common building ground.

That should reduce the inductance considerably and thus the antenna
structure would be much closer to the building grounding bar potential
during a lightning hit.

Paul OH3LWR