[South Florida DX Association] Find your soil's electric conductivity

Bill Marx bmarx at bellsouth.net
Thu Apr 24 19:03:33 EDT 2008


Thanks to Steve NU7T
73,
Tony N2MFT
______________________________________________

Fellow radiators:

To Find Your Soil's Electric Conductivity

1) Go to: http://websoilsurvey.nrcs.usda.gov/app

2) Click on the big green button, "Start WSS".

3) Follow step 1 of "Three Basic Steps" on the first page.

Typing your address under "Quick Navigation" is the easiest method.
Remember to spell out street, circle...

When using the + and - zoom feature, click on + or -.

Then place the cursor at the point you wish to be the center of your
next map and click.

4) Click on "view".

5) Click AOI tab which is just above the map and outline (draw a box
around) your Fresnel Zone.

6) Follow the second step "View/Explore" by clicking the "Soil Map" tab.

7) Click the "Soil Data Explorer" tab.

8) Click the "Soil Properties and Qualities" box which is just above the 
map.

9) Click the "Soil Chemical Properties" box.

10) Click the "Electrical Conductivity" box.

11) Toward the bottom of the page, locate "Top Depth" and enter 1. For
the bottom depth enter 144 for 14 Mhz, 360 for 1.8 Mhz.

12) Click inches.

13) Click "View Rating".

14) In the table, read in the column "Rating (millimhos per centimeter)".

15) Use the millimhos/centimeter number as mS/m.  Thus, 17 millimhos
becomes 17 mS/m. This is the electrical conductivity of your Fresnel
Zone.

16) This page is printable from your screen to your printer.

Steve, NU7T 



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