"Dennis Pogson" wrote in
:

Some sailors trail the anchor chain overboard, connected to the mast,
but I wouldn't know how effective this is is protecting your
electronics.



near Zero. There is no protection for 100 million amps at 100 million
volts. It flashes over anywhere it wants. The pulse is so fast, with such
a huge, short risetime, that any inductance in series with this amazing
EMP, even a smooth rounded turn angle of a grounding bridgecable carefully
heliarced to the bottom of the tower, is enough series inductance to create
several thousand volts of induced voltage across that inductance, far more
than is necessary to zap the radios.

One of my musical instrument customers had a lightning hit on a fireplace
chimney on the North side of her home. TWO ROOMS away from the fireplace,
her computerized electronic theatre organ sat, UNPLUGGED as I instructed
her to try to protect it from power line lightning hits. The organ was too
destroyed by the induced EMP (electromagnetic pulse) to repair. Insurance
replaced it, along with a lot of other electronics.

It's that powerful.....