I would like to call attention to the work of members of the Elmira Radio Club in refining the EH antenna... Paul VE3PVB and Al VA3TET among others were leaders in the project, taking Ted Hart's work as their starting point, and got some very encouraging results... You can read more here:
Best, Calvin VE3EIT?
On Saturday, June 1, 2019, Alan de G1FXB via Groups.Io <g1fxb=
[email protected]> wrote:
Hi Alison,
I recall you done antenna R&D.
RE my comments: feeder radiation?? etc,?? and one of the examples I
was eluding to:-
Ever have reason to look at the work of Ted Hart?? W5QJR ? EH
antennas in either their or your commercial or hobby capacity?
Perhaps 5, never as many as 10 vearment supporters & no one
else in the world could get them to work however "tweaky" the MKII
/ MKIII designs evolved
Had a massive US Mil. grant for their R&D, nothing.
Failed to convince the IEEE with all their techno babble papers as
to the theory?
However I bet they have nice retirement homes......
Maybe I'm an old fashioned dinosaur?
Way off topic... but "Do they work?"
a quick yes or no will suffice.?? :-)
--- .???? --- --- ---
regards Alan
??
On 01/06/2019 21:28, ajparent1/KB1GMX
wrote:
Alan de G1FXB,
Your correct.?? any testing and I've done a lot with small loops
you need lots of??
"shield breakers" or choking to remove the COAX shield as a
possible secondary
coupling making it an undesired array and often clouding results
or minimally
distorting patterns greatly.
If the RF source is small and self contained it can be at or very
near the
feed point and make the problem easier.?? Same applies for
receivers
as well.
Generally Loops, large or small, are considered self contained
antennas not
requiring ground planes or counterpoises.?? However in the real
world those
will exist.?? As a result supports or cables and the very existence
of the
ground below it do influence the results.
Allison
