Re: LF: Re. Decca Masts

["Mike Dennison" <mike.dennison@rsgb.org.uk>]

G3AQC wrote:
> << The performance of the Decca Ant. is quite interesting, the "gain"or at
> least the advantage over the normal amateur installation appears to be at
> least 20db.... This is tremendous and I dont see how it can be attributed
> to the height alone, conventional wisdom says that a short vertical has
> the same radiation pattern as a full sise one,and even 300 feet is far
> short of full sise. So where do we look  for the explanation? >>
Don't forget that the transmission was a full 1W ERP (from only 
10W in!). Very few amateur stations are able to run that amount of 
power even with hundreds of watts input.

Mike, G3XDV (IO91VT)
http://www.dennison.demon.co.uk/activity.htm