Topband: Measure dipole on ground to get VF of BOG.

[Mikek]

I'm about to do some measurements on a BOG.
  I've been a little slow getting things working, I've now got my inside 
and outside boxes assembled,
I understand I can break the BOG in the middle and find resonant 
frequency as a dipole.
 From that I can calculate the VF. I may leave this for a while and hope 
for rain to get some
different measurements.
  I also wonder about measurements, on the ground, at 1" above ground, 
and at 2" above ground. Is there any advantage to
the pattern or signal strength. At 2" inches I could weed whip to keep 
it weed free.


  On a second note, I'm building it long, for the AM band and 
considering using KD4Zs stretch modules (in my case shrink modules)
  for 160M and 80M bands. Although I think I would just terminate 
instead of reflect.

  Your thoughts? any good pages about the Dipole on ground measurements 
appreciated.

                             Mikek   KF4ITA