Re: Topband: Tree Conductivity

2013-08-09 Thread W2PM
So when the Suns magnetic field reverses and the sap starts flowing in the opposite direction will that affect the conductivity any? Sent from my iPhone On Aug 9, 2013, at 8:29 AM, Raoul Coetzee wrote: > > I am well aware that I may be flamed (again) for starting "something", but > I found t

Topband: Tree Conductivity

2013-08-09 Thread Raoul Coetzee
  I am well aware that I may be flamed (again) for starting "something", but I found this article where the conductivity of sap wood and hard wood is measured. It seems if I read it correctly, that with this specific trees and soil conditions, the results are quote:and 594 ± 55.5 the heartwood r

Re: Topband: Tree conductivity

2013-08-04 Thread Ulrich Weiss
unday, August 04, 2013 2:42 AM Subject: Re: Topband: Tree conductivity Some time ago I attempted to make direct measurements of the HF conductivity of trees, at least for the trunk and limbs. I simply put a two rings, with nails to penetrate through the bark, around the trunk spaced a couple of fee

Re: Topband: Tree conductivity

2013-08-03 Thread Bob Kupps
Yes I am no doubt in that group. So do good conductors in the near field re-radiate most of the coupled energy (eg a parasitic element) while poor conductors dissipate it as heat? I would think poor conductors or lossy dielectrics like trees would not couple much energy from the field, whether

Re: Topband: Tree conductivity

2013-08-03 Thread Tom W8JI
Some time ago I attempted to make direct measurements of the HF conductivity of trees, at least for the trunk and limbs. I simply put a two rings, with nails to penetrate through the bark, around the trunk spaced a couple of feet apart. Basically what I had was a resistor. I then measured th

Topband: Tree conductivity

2013-08-02 Thread Rudy Severns
Some time ago I attempted to make direct measurements of the HF conductivity of trees, at least for the trunk and limbs. I simply put a two rings, with nails to penetrate through the bark, around the trunk spaced a couple of feet apart. Basically what I had was a resistor. I then measured the