Calltrex wrote:

Yeah the folded dipole that is. We see there 4 x ¼ = 2 lambda.
Following the antennabook one can earth the middle of that folded dipole.
And feed it with a coax.
So from there we can bridge the mantle from the coax to the middle of
the straight
dipole piece. See it ? Now my problem in visualising that; the current
from hot goes
to the ½ wave dipole....hits ground there.....appears out of the
ground(!).... hits the
second ½ wave....and dives back in the coax mantle. If this is true i
can't imagine it !

Now the violin string. Take one string attached between two walls or
whatever.
Exite it. Now ground the string in the middle.....exite the first
half......and the second
halve will vibrate also ?? Thru ground ??

Are the two statements right? The mind boggles.

It's even cooler than that. You can put two antennas miles apart with
nothing but space between. Put current through one, and current will
appear in the other -- THROUGH SPACE!

Put two violins close together and pluck the string of one. The
corresponding string of the other will vibrate. THROUGH AIR!

You mind has just begun to boggle.

Roy Lewallen, W7EL