> Also I remember there is an optimum angle to > "droop" them to get the > main lobe at the horizon-I want to say between 30 and 45 > degrees down > from horizontal. Affects impedance too if I > remember...it's late.... > > >
The ground plane elements are usually drooped about 45 deg to get the impedance to around 50 ohms. It is around 36 ohms if left horizontal.