On 3/2/2021 11:19 AM, Dave Cuthbert wrote:
John, here are EZNEC results for your downward sloping inverted-L and your T-vertical. Inverted-L radiation resistance = 8 ohms T-vertical radiation resistance = 12 ohms
When doing these comparisons on 160 meters, it is crucial to use the EZNEC "Desc Options" setting (2nd from the bottom in the main window) to plot vertical and horizontal radiation separately. Then count only vertical polarized radiation as the "money spec" (as we used to say at Agilent :-). If you use combined polarizations, it is very easy to be fooled into thinking that an inverted L with a very long top has fantastic efficiency, vs a T vertical. Well, I will grant you that it is very efficient at warming the clouds. 73 Rick N6RK _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
