DK8KW wrote:
On the other hand, there is Vaino's (OH2LX) comment, that according to his
long-lasting experience it is not possible to estimate a station's ERP
from the field strength at a far distance ...
Well, that's the point I was trying to find out. I wondered whether I
could calculate my ERP from your graph, and plainly I could not.
But is this Vaino's theory, or something else. If we could sort this
one out, it would validate (or more likely quantify) Mal's comment
that 1W ERP from a small antenna will be worse than the same ERP
from a large one - at a distance of course.
All very interesting indeed. Although some people dislike the league
table approach, I personally find these measurements very useful in
my own ongoing efforts to get a good signal out of a small garden.
And comparing my efforts to those of other people is a good way to
keep up my enthusiasm to do better.
Mike, G3XDV (IO91VT)
http://www.dennison.demon.co.uk/activity.htm
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