Topband: "Artificial" Propagation...?

[Hardy Landskov]

Carl,
I thought someone, maybe NASA tried this many years ago and their folley was 
that the universal gravitational force equation did in the whole project 
because once 2 particles attach to one another that doubles the mass. After 
that, a 3rd joins the double, and then a 4th, and so on until you have this 
big bunch needles doing nothing but orbiting the Earth.
I don't see that this is any different.
73 Hardy N7RT


----- Original Message ----- 
From: <k9la at frontier.com>
To: <topband at contesting.com>
Sent: Saturday, March 10, 2012 7:10 PM
Subject: Re: Topband: "Artificial" Propagation...?


>> But more importantly, 100 km is too
>> low to provide much help to us
>> Topbanders. This is far below the E
>> and F layers of the ionosphere that
>> we rely on for DX.
>
> The peak of the nighttime E region is around 110 km, so 100 km is not too 
> far below the E region. The lower E region is also where most absorption 
> at night occurs on 160m.
>
> More to the point, refraction is inversely proportional to the square of 
> the frequency. An electromagnetic wave at 1.8 MHz bends more and doesn't 
> get as high into the ionosphere as our HF (3-30 MHz) energy.
>
> At night, with the E region critical frequency around 0.4 MHz, energy at 
> elevation angles lower than about 5 degrees is refracted back to Earth by 
> the E region.
>
> Thus the E region may be more important than we normally think.
>
> Carl K9LA
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK