scwis

I finally found my old files – here is a copy of a ground conductivity chart for the USA…

I finally found my old files – here is a copy of a ground conductivity chart for the USA…

Here’s a retouched preview copy, a reduced size GIF format file for faster loading.

Click here for a gigantous JPG that’s 970 X 650 or so, in all its ugly glory.

Click here
http://www.fcc.gov/mb/audio/m3/ for an even bigger map, and more in depth info from
the Friendly Candy Company.

Hope there’s a “30” near you!