[TowerTalk] Ground Resistance

[Pete Smith]

Rather than looking just at resistance, why not try to more fully characterize ground parameters?  I fuzzily recall that a VE2 working at the Canadian government's antenna lab suggested years ago that you erect a very low dipole for the frequency of interest and then tweak ground parameters in a NEC-2 model until the resonant frequency and feedpoint impedance closely match the observed values.  Is there something wrong with that approach?

73, Pete N4ZR

At 12:19 AM 8/14/2006, Jim Lux wrote:
>At 03:25 PM 8/8/2006, David Robbins K1TTT wrote:
>>Way, yes... simple, not really.  There are meters made for measuring ground
>>system resistance, but they rely on either a very good reference ground
>>nearby, or a couple of rods spaced the right distances apart to act as a
>>reference.  Its been some years since I used one so I forget the exact
>>process, but its spelled out in detail in the manuals.  The one I used last
>>was made by Biddle if I remember correctly.  Check with a local electrician
>>or electric company crew, they may have one and could make the measurements
>>for you.  Or the meters can be rented from electronic rental places if you
>>want to do it yourself.
>
>And, of course, such a meter would measure at some frequency OTHER than the 
>HF frequency you're actually interested in.
>
>I suppose one could do something like measure the received signal strength 
>from a fixed beacon, and keep adding radials until the difference is "small 
>enough"..  Lots of traps here for the unwary, the vagaries of propagation 
>being but one.
>Jim
>
>
>
>_______________________________________________
>
>
>
>_______________________________________________
>TowerTalk mailing list
>TowerTalk at contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk