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Old February 18th 13, 01:51 AM posted to rec.radio.amateur.antenna
tom tom is offline
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First recorded activity by RadioBanter: May 2009
Posts: 660
Default Homebrew 222 Mhz Beam Antenna Project

On 2/17/2013 12:24 AM, Jeff Liebermann wrote:
On Sat, 16 Feb 2013 19:57:44 -0800, Jeff Liebermann
wrote:

With an 8 foot boom, you'll probably fit 9 elements:
http://www.vk5dj.com/yagi.html
13dBi gain, 44 degree beamwidth.


Here's another yagi calculator program:
http://www.yagicad.com/YagiCAD/YagiCAD.htm
It will do a variety of driven elements and yagi styles. It also
exports results to 4NEC2.



My calculation, based on a database of 100+ EME antennas predicts 13.6
dBi maximum reasonable gain. So that sounds about right.

tom
K0TAR