Laurie,

you're right about the 8-shaped pattern, in fact the pattern is very
similar to that of a lambda/2 dipole (in free space).
A Marconi antenna has more directivity than a loop (4.8dBi versus 1.8dBi).
Radiation patterns of both antennas are very different, a loop is much more
sensitive to 'high angle' signals. So it all depends of where the QRN
sources are.

73, Rik  ON7YD

At 14:40 26/01/01 -0000, you wrote:

Hi Rik,

But the maximum of a loop is very broad so Im afraid it wont give any

improvement in regard to atmospheric QRM.
  Im not so sure! analysis using EZNEC shows a "fig8" azimuth pattern,at
least
for vert. polarisation and I doubt wether the horiz component will actually
exist in practice.
Afraid my letters went to the wrong address, but when you do get them please
have a look at figs 2/4.
73s Laurie.