[TenTec] New and Improved Terminology (NVIS origins)

[Steve Hunt]

Stuart,

That seems a very "generous" interpretation of what Gordo is quoted as 
saying:

"What strongly affects the shape of the far-field low angle
which we want? the low angle elevation pattern of a vertically
polarized antenna ? Well, that would be the conductivity
and dielectric constant of the soil in the area just below the
antenna."

Notice the word "shape" - no mention of signal power - and the phrase 
"just below the antenna".

Rudy Severns said:

"Any practical ground system will not affect the radiation angle or 
far-field pattern!"

and:

"The ground system around the antenna does nothing for the far-field 
pattern except to increase the power radiated for a given input power."


I reckon only a lawyer could make Gordo's quote and Severn's quote mean 
the same thing ;)

73,
Steve G3TXQ



On 06/01/2011 21:46, Stuart Rohre wrote:
> I think you could read Gordo's comments as intending to say there is
> more efficiency, and hence more signal power radiated at the optimum
> (low angle for a vertical), if you have a good near field ground.