[BC] Directional Antenna Proofs - Ground systems.

[Rob Landry]

On Thu, 21 Jun 2012, jpotter at jpotter.com wrote:

> Ron: I answered your other email before I saw this one, sorry.

> "The experiments of George Brown et al detailed in their 1937 I.R.E. paper on buried ground systems shows that it takes 113 or more 0.412-wave buried radials to produce the system performance of the same monopole on the same frequency when using only a few, elevated, 1/4-wave radials."

> OK, then, for economic reasons, why don't we build AM stations with 
> fewer elevated radials than so many buried ones? Must be another 
> justification, other than hiding the copper from thieves.

I have only ever seen one station built with elevated ground radials: WCMX 
in Leominster, MA. That was maybe 20 years ago, and I don't know if it's 
still set up that way.

Rob