At 06:40 AM 6/2/03 -0700, Jim McDonald wrote:
>1. Ignore it - it's a good static drain.
>2. Rent a boom truck and ground the centers of the parasitic elements on the
>I have seen four direct hits during a 30-minute period in one storm here in
>Arizona, and probably others have occurred too. No apparent damage. Have
>several 8' rods at the base and in a coax/control line trench to the shack,
>ICE protectors on the coax cables, rotor line, and DX Engineering switch
>cables, and the ground rods connected to a large horse arena pipe fence near
>the tower. Use mostly Cadwelds to connect wire to rods.
A third option, suggested to me by W8JI, is to ground the centers of the
elements through inductors that are large enough to be effectively open
circuits on 40, thus avoiding any serendipitous creation of new interaction
modes among your antennas. This could also be useful if you ever decided
to shunt feed the tower on 160, in which case you could develop some fairly
large voltages at the top of the tower and cause arcing problems -- that
was the context in which Tom suggested it to me.
73, Pete N4ZR
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