On 06/24/2011 06:54 PM, K1TTT wrote:
> When raised or over very poor ground yes, the radial length can affect the
> resonance as you have seen. As you add more radials it should become less
> pronounced, maybe you haven't reached your 'good number' of radials yet and
> were measuring with just a couple?
Someone who sets up a vertical antenna temporarily and only
has time, space or material for a couple of radials may be
better off by raising the feedpoint way off the ground.
This can be done either by raising radials, or by building
a double L antenna - which is a lot less work and not all
that far off performance wise.
http://www.yccc.org/Articles/double_l.htm
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