Zack Widup wrote:
> > > The more I think about it, the more complicated it gets.
> > Surprisingly, ERP-based calculation stays simple. All one must do is
> > determine the "ERP Factor" pivot point that makes the most sense for
> > a given band.
> > A. 2-watts to a 55 Element 1296 Loop yagi = 110
> > ...
> > H. 65-watts to 4x 45 Element 1296 Loop yagi array = 11,700
> > The question becomes...what should the Pivot Point be for 1296?
> It's not so easy. Calculate how far the above figures will actually get
> you distance-wise. Each band is going to be different.
Of course! :) The physics of RF comes into play (including the physics of band
conditions, QSB, etc.) as a variable anyway -- as does operator skill. That is
why I've also said that the challenge is to establish the Pivot Point and that
doin so is as much an art as a science. Once it is established by the
sponsoring organization, the calculation to determine entry category is trivial.
Ev, W2EV
--
PropNET: If the band is open and no one is TXing, does anyone hear it?
HamIM : Messaging the all-ham way, find Rovers as they go to play.
That HamIM, that HamIM -- I'm sure you'll like that HamIM.
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Ask me about either. I'll send a URL and you can join the fun, too!
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