Уважаемые конструкторы антенн,

См. внизу информацию о новой версии программы расчета антенн: 

В этой версии  известной Freeware программы  можно вычислять G/Ta.

Vers 6.2.0 :

YagiCAD6.2.0
April 2014
1.Changed internally and for export to have Yagi boom along X axis to align with common usage.
2. Added antenna temperature tool to toolbox which does a basic noise calculation based on the DUBUS article by Rainer Bertelsmeier, DJ9BV “Effective Noise Temperature of 4- Yagi-Arrays for 432 Mhz EME”. This produces similar results to the TANT program by YT1NT.
3.To validate the antenna temperature figures, or for other post processing uses there is now also an export option for a far field table in an appropriate format for TANT.