In article ,
wrote:
The Moregain antenna was build by a company in maryland near D.C. An old h=
am gave me an original 80/40 meter one, along with operating instructions, =
and some operating notes from the original owner. The company literature c=
alled it a Monopole configuration, not a dipole. It worked great for me un=
til Florida heat and sun disolved the plastic spreaders. It was available =
for all ham bands at the time.

That's a weird thing... not a folded dipole, not really trapped...

It looks like the patent on it is expired and you can build one without
licensing now, but I don't really see this as being an improvement over
a fan dipole and it looks to be just as hard to tune. The description of
operating principles in the patent is kind of screwy. It would be
interesting if someone would do a proper analysis of this design:

https://patents.google.com/patent/US3229298A

--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."