donut wrote in message ...
Loopfan wrote in
rthlink.net:

Unless I misunderstand how ferrite-chokes work, this does seem to
physically point out that the shield is the actual antenna.


How can the shield be the antenna when it's connected to RF ground?

A time-varying (RF) magnetic field generates an EMF in any loop
surrounding it.

(Faraday's Law of Magnetic Induction: there is an EMF proprotional to
the rate of change of the magnetic field enclosed by any closed line.
Ohm's law: the voltage drop in a resistance is proprotional to the
resistance and to the current. Kirchoff's Voltage Law: the sum of
voltage drops around a closed loop is equal to the sum of EMFs in the
same loop. Edwards' Law Quotation Law: Anyone quoting laws is not to
be taken too seriously. Or something like that. So by making the
loop a conductor with a gap, the EMF given by Faraday's law is
delivered almost completely to the gap. Doesn't matter if the loop
conductor is grounded at some point or not. Note also that in the
presence of a time-varying magnetic field, the voltage you measure
between two points depends on the path you take.)

Cheers,
Tom

(Tom Bruhns) wrote in
m:

So by making the
loop a conductor with a gap, the EMF given by Faraday's law is
delivered almost completely to the gap. Doesn't matter if the loop
conductor is grounded at some point or not.

Thank you for your clear and concise answer. The part quoted above is what
was missing from my viewpoint.

As some seem to have concluded, I was not trying to be facetious.