Hi Mike:

The answer is yes and no. Some designs use the part of the feed line as a
radiator some don't
The ones the don't have a 1:1 choke balun at some magic point down the
feedline (if they are using coax) to stop the RF from getting into the
shack, others designs use a balun at the feed point to isolate the feedline
from the antenna. I think the "Carolina Windom" uses the feedline as part of
the antenna and the ones that call themselves "windoms" or OFC's don't. Its
all marketing and sloppy use of names.



--
John Passaneau, W3JXP
Penn State University



"Mike Coslo" wrote in message
...
David Ryeburn wrote:
In article ,
Cecil Moore wrote:


Mike Coslo wrote:

Does the OCF dipole feedline radiate by design?

The Windom single-wire feedline radiates by design.
It would be extremely difficult to keep the OCF
feedline from radiating but a 50:300 current balun
at the feedpoint might help.


Here's a relatively simple way to keep an off-center fed "Windom"
antenna feedline from radiating: Install another Windom antenna of
identical dimensions at an acute or right angle to the existing one. Tie
the long side of the second Windom to the short side of the first one,
and vice versa. Feed the thing with a balanced line, or with coax
through a balun. I don't have EZNEC (it won't run on Macs) so I don't
know what the pattern would be like, but if everything was symmetrical
the feedline ought not radiate.


I just wonder if the feedline radiation might be a necessary pat of the
OCF Dipole

- Mike KB3EIA -