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Old May 12th 06, 01:47 AM posted to rec.radio.shortwave
craigm
 
Posts: n/a
Default Fixed Loop On-a-Roof - Great for Monitoring that Hard-to-Get AM/MW Radio Station

Telamon wrote:

In article , craigm
wrote:

RHF wrote:



Usually getting the Element of the Loop Antenna at least
Three Feet above the Roof (Five Feet is better) will get
the Loop out of the Building's RFI / EMF Noise Envelop.


What technical foundation exists for this type of statement?


Most any building materials have a dielectric constant higher than air
(1) and tend to bend the electric field lines around the house. The
field lines generated inside penetrating the outside tend to head toward
earth.


Are you saying the wood, fiberglass and shingles have enough effect to make
three or five foot separation sufficient to reduce the field from noise
generated inside a house?

Why then would anyone have trouble with noise radiated from their neighbor's
house?