>> I have researched Laport's material, and find nothing that compares multi-tower array performance when using insulated radial wire versus uninsulated wire when using a bus wire at the radial overlap points. Since his worked in the 1950s mostly focused on directional broadcast tower arrays -- and the use of heavy-gauge wire, possibly insulated radial wire wasn't considered because of long-term insulation decomposition that one day >> results in electrical contact between overlapping radials.
I doubt if you'll find anything in the broadcast literature. The reason is that the standard DA ground system as far as I know, has always involved strapping radials to a copper strap running along the line of radial intersection, clipping off the radial wire that runs past the strap. And the standard ground system wire is AWG solid bare soft drawn. I think engineering firms like everything done the same way from one site to the next to reduce variables for a full proof and get a DA dialed in to the licensed pattern. Why the teflon insulation? 73 Rob K5UJ _________________ Topband Reflector Archives - http://www.contesting.com/_topband
