Ah, perfection. Sadly, EZNEC does not provide that set of options. If I
could build that model, I would. But I can't. I will take this first
approximation, understanding its limitations. Brown's 99th law -- never
let perfect be the enemy of good. We don't know the nature of that
roof, so modeling several possibilities and using the result to TRY
things seems like a pretty good approach to me.
73, Jim K9YC
On Tue,8/11/2015 12:42 AM, Guy Olinger K2AV wrote:
In order to estimate your hypothesis you need to create a building
shaped cage of dielectric wrapped, resistively loaded, interconnected
wires. It is necessary to bookkeep in the model that the roof, as
conductor, is connected to a vertical conducting face on four sides
and then to ground.
These faces electrically are at least in the quarter to half
wavelength range vertically and can radically effect the appearance of
the roof as conductor. These faces can have significant radiation.
These faces can be the majority radiator with the dipole serving
mainly as a matching device to the building as majority radiator.
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