K7ITM wrote:


If there's a net RF current, there's a net RF current, and it will
radiate. It matters not a whit whether you say the net is on the
inside or the outside or distributed between them in any proportion.
If you choke things so there's no net current, you may as well not
have bothered putting the wire/coax/whatever in to begin with.
Consider what the current on the inside of the outer conductor must be
if the coax is acting as a transmission line, and consider where that
current goes at the "top" end of the piece you suggest.

To keep RF "out of the shack," put a Faraday cage around the shack and
don't turn RF loose inside that cage. Then it doesn't matter (with
respect to RF "in the shack") whether the Faraday cage is connected to
"ground" or not.

What exactly is "ground," anyway? Do you think it has magical
properties? What ARE its properties? What does it do for you?

Interesting ... suggesting that if an inductance/capacitance it added
into the shield (or center conductor) and in series with such, so that
the current voltages between the center conductor and braid are 90
degrees lagging/leading that a net current would be possible between the
inside braid and the center conductor. But, still due to the choke on
the outer braid--impossible there (well, vastly reduced.)

Hmmm ... a name for it? Perhaps "Tuned Ground" or "Tunable Ground." grin

Regards,
JS