On Mon, 06 Aug 2007 18:04:27 +0000, Ed wrote:

No, it is not. Common commercial practice is to bond the base of each
tower to a good common copper earth ground system around the radio vault
structure... assuming the vault is close to the towers. ... otherwise,
additional grounding would be needed around the towers' bases.

Good afternoon, Ed.

I am in the process of doing that, but my concern is that the second
through fifth tower sections may or may not have a decent electrical
connection to the first (lowest) tower section which is the one that's
grounded.