Sorry for that. I'll try another way in a German forum. I read an article there about the quad antenna.Boncuk, that's the same link Mike posted. I've as yet not found the equation to determine the element length for an arbitrary frequency.
May be one of RadioRons design.anyone know where I might be able to find this information out again?
Yeah, Boncuk, great article!I feel a little silly, the 2nd page has the equations on it, and it's absurdly simple. Each side of the biquad is simply 1/4 wavelength. Even without translating that doc has all the info I need, thanks tons for looking for me Boncuk.