On Thu, 2 Oct 2008 16:44:22 EDT, Michael Coslo wrote:

Now a simpler way to do all this, and much less dangerous, is to use
maps like the one at:

http://www.fcc.gov/mb/audio/m3/index.html

Ah yes, the venerable M3 map. It is only an approximation, and for
real-life stuff it isn't used any more, supplanted by real ground
conductivity measurements.
--

73 de K2ASP - Phil Kane

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon

e-mail: k2asp [at] arrl [dot] net