Yuri Blanarovich wrote:
That makes it Faraday shield, which stops any signal from entering inside of
the tubing.
I never asserted that Faraday shield or closed metallic enclosure passes any
signals or fields.
We are talking about electrostatic shield, which if removed, antenna works
without change, you put it back, it still works the same way plus it rejects
in its reactive near field region electrical field interference.
If it was to be antenna, then when removed, the rest should stop working as
an antenna, or what is the theory?

Yuri,

A shield is a shield.

People made some very good posts explaining how the "shield" works, and
there was nothing wrong with my original explaination.

You stated the shield is an "electrostatic" shield and I pointed out a
static field does NOT cause noise. Static is by definition stationary
or non-varying.

The only reason the shield affects the noise, as I and others have
pointed out, is the shield changes the balance of the system. The
shield IS the actual portion of the antenna that receives the signal,
whether that signal is noise or an intentional desired signal.

The entire shield can be dispensed with without any change in the
system so long as the system remains in balance, and that is quite
possible to do.

As a mater of fact if a non-symmetrical "shield" is added over a
balanced system it will decrease balance and make the system more
susceptable to noise because the feedline will become part of the
actual antenna.

You might look for a copy of "Fundamentals of Electricity and
Magnetism" (McGraw-Hill). This entire book deals with basic field
behavior and entire chapters explain in detail what everyone is saying.

As Roy pointed out, I didn't make this stuff up. It has been in print
since the 1800's and the electric field effects first experimented with
around 600 BC (although it was the 1600's before serious experiments
were done).

There's nothing impossible about what you may have observed but the
reasoning you gave and statements about my explaination being in error
are wrong.

There is absolutely nothing that causes noise to electric field
dominant and the shield absolutely does not "filter" the time-varying
electric field from the time-varying magnetic field. The shield IS the
actual antenna and the stuff inside it, once inside it, is excited only
by the gap. Nothing at frequencies of interest passes through the
shield walls.This is a very well-known behavior and why so many
immediately disagreed with your description.

73 Tom