From: "Mike Dennison" <mike.dennison@rsgb.org.uk>
To: rsgb_lf_group@blacksheep.org
Date: Mon, 17 Jan 2000 16:59:27 -0000
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Subject: Re: LF: PA0SE and DK8KW field strength observations combined
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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