On Sun, 23 Apr 2006 06:17:35 -0700, Wes Stewart
wrote:

On Sun, 23 Apr 2006 08:08:46 -0400, Buck wrote:

[snip]

In other words, a 6 element beam of some given element spacing has a
(number from the air) gain of 6db. A twelve element version with
twice the boom length will be in the ballpark of 12 db gain.

You want to rethink this? I've always figured 2.5 - 2.6 dB increase
for each doubling of the boom length (or array size) for practical
purposes.

Wes, that is pretty consistent with the fit to the VE7BQH collation
which gives me 2.64dB for doubling of the boom length (for a long yagi
( 2 - 8 wavelengths) with sufficient elements). Alternatively, 1dB
increase for each 30% increase in boom length.

Owen
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