Topband: Effect of current max not at base of vertical.

[Rik van Riel]

On 09/17/2011 01:19 PM, Richard (Rick) Karlquist wrote:

> I'm still waiting to see an actual measurement showing that a 1/2
> wave vertical with minimal radials is worse than a 1/4 wave
> vertical with radials.  My measurements were over high conductivity
> ground.  Maybe they would be different in the desert.

That's hard to imagine.

A 1/2 wave vertical without any radials at all is only
a few dB (2-6 depending on ground type and exact antenna
shape) below that of a 1/4 wave vertical over totally
perfect ground.

I'm sure a 1/4 wave vertical with 8 raised radials,
all raised maybe 10-20ft above ground, would be better
still - but only by a few dB and it'd take up a lot
more real estate...

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