Total posts : 45366
I’ve found the white-paper on the Star-H antenna which shows a photo of an array designed for 1680kHz under 250 Watts.
The description is as I stated earlier, 4-verticals clustered symmetrically near each other, up 45-foot poles and then making an L turn out in horizontal direction on all 4 poles of the compass, extending out to four distant poles. The base is fed by a single transmitter, therefore the parallel connection of all 4 elements lowers the impedance. Indeed, says the lit, the opposing horizontal wires cancel each other in phase, however they serve the purpose described in this thread also served by top hats, they alter the capacitance/reactive characteristics so as to help match the vertical section, all 4 parts of which merge in phase and strength.
So, putting everyone’s view into the mix, it seems like the “hat” can help in some cases, hinder in others.
As a consequence of this discussion I am able to take the hat more seriously.