Thread: Atmosphere
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Old February 15th 16, 04:19 PM posted to rec.radio.amateur.antenna,uk.radio.amateur
gareth gareth is offline
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First recorded activity by RadioBanter: Sep 2012
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Default Atmosphere

"Sal M. O'Nella" wrote in message
...
"gareth" wrote in message ...
As we all know, the atmosphere greatly affects the propagation
of radio waves, with all the various layers, and the effect of the
Sun and sunspots on propagation through the atmosphere.
Is it therefore not beyond the bounds possibility that this same
atmosphere
affects the initial propagation of radio waves away from our antennae,
and that somehow is the reason why short antennae are poor radiators
compared to antennae of significant (1/4 lambda) fractions of
a wavelength?

I know that I have attempted to discuss this before and been met
by the hidebound rednecks of Yankland, but it is a question
of interest to me, and not a troll.
=================================================
I doubt if distant conditions affect the origin.


I intended the atmosphere immediately adjacent to the antennae.

I am only a talented amateur but I think with an antenna, the wavelength
is best matched by the antenna aperture. This is not the case with short
antennas.
What do you think?


The standing wave caused by reflection from the open end of a short antenna
will not cover a full quarter cycle, and therefore the radiation must be
reduced
accordingly.

But that fits in with my opinion that the atmosphere / environment/
lumeniferous aether / or
whatever needs in some way to be excited or twisted by the EM field of the
antenna, hence
my suggestion that you quoted above.