On Tuesday, June 19, 2012 12:59:43 PM UTC-5, Boomer wrote:
So in finishing up, a horizontal loop probably offers little noise
immunity when operated in the countryside where you have no nearby
sources of interference.

A loop antenna reduces one type of noise considerably compared to a dipole, i.e. precipitation static which is unrelated to EM far-field signals.

http://www.its.bldrdoc.gov/fs-1037/dir-028/_4096.htm