RadioBanter - View Single Post

May 19th 05, 05:50 AM

In article . com,
wrote:

Telamon wrote (in part)

snip

The refraction concept has the EM waves incident to a boundary of
dielectric change. The wave path is bent according to the frequency
of the EM wave and the delta of the change in dielectric constants.
Another factor to consider is the angle of incidence so three factors
are involved that determine the outcome of where the energy goes but
it looks to me that most of the energy follows the same path so if
10% of RF only gets refracted then I just don't understand what is
going on with radio waves and the ionosphere.

-- Telamon Ventura, California
--------------------------------------- My "10%" figure is based on
conversation with our astronmy friend and also from an reffrence book
that I have misplaced, that goes in to great detail on EM wave
intereaction in the ionosphere. Back in the 70' several satellites
with HF recivers were used to measure ionospheric penetration. This
book detailed theresults. I can't even remember the name right now, a
mind is a terrible thing to lose. It was published by one of the big
Brit(Oxfor comes to mind) universities. I haven't thought of that
book in a long time. Damn I hope I have't really lost it!

Terry

Looks like we are going to have to read up on this Terry. I've got a
book I have not read yet called "Radio Frequency Principles and
applications" that may shed some light on this. I'll let you know.

--
Telamon
Ventura, California