That's a very interesting study. What about elevated counterpoise systems using a similar number of radials e.g. 20-30 and a perimeter wire? Are common mode feed line currents still difficult to suppress as with the 2 and 4 wire systems in your study, and is it even possible to resonate such a counterpoise?
----snip About 20-30 radials flattened off the 160 meter system using 1/4 wave verticals. The 120 radials being "perfect" thing is obviously a myth, just like the idea it takes a special counterpoise to reduce losses better than a dozen other methods the same size. I'm still hammering away at the counterpoise thing off and on: http://www.w8ji.com/counterpoise_systems.htm 73 Tom _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK