Topband: Coax Shield vs. Ground & elevated radials

[Telegrapher9 at aol.com]

Bjorn,

is the RF current probe opening large enough to clamp around the coaxial 
cable? If it is then you are ready to measure. If the RF current probe opening is 
too small you can use a large ferrite toroid with the coax running through it. 
Then one turn of wire through the toroid that then loops once through the 
small RF current probe and it will work. More turns can be used on either the 
toroid or the RF current probe to obtain more or less sensitivity. 

Of course the RF probe will affect the antenna a bit. The probe will add an 
insertion R + X and this can be measured or calculated. I suspect that this 
insertion impedance is small enough to be ignored. 

    Dave WX7G