[R-390] Building Standards

[Roy Morgan]

On Aug 3, 2009, at 1:18 PM, Tisha Hayes wrote:

  I wonder if anyone
> has ever thought of dropping a ground into the septic tank

No, but it's a good idea!

> ... 340 square feet of surface area (not counting the top) for a
> ground (damp concrete is a good conductor).

Here, the (new) septic tank is fiberglas or some plastic.  I wonder if  
the capacitance through the wall would make a good RF ground if not  
good for AC or lightening.

> I may try to drop an element
> into there and hook the Megger to it to see what happens.

Do you mean megger, or ground resistance tester?  Ground resistances  
are quite low and there are special megger-like hand cranked gadgets  
to measure it, right?  I have here a PDF document that tells about one  
brand of such tester - published a LONG time ago. Also, layman level  
methods have been described in ARRL handbooks and presumably elsewhere.

Roy

Roy Morgan
k1lky at earthlink.net
529 Cobb St.
Groton NY, 13073
Home: 607-898-3607
Cell: 301-928-7794