I would love to build my own quad...may take me a while but I think I can do it...do I match it with a balun? It's gonna be diamond shaped for horizontal
The shape means nothing. It is the location of the feedpoint that determines the polarity. A diamond quad fed at the top or bottom is horizontal but if it is fed in either the right or left corner it is vertical. Same as a square. If it is fed in the middle of the top or bottom it is horizontal and if fed in the middle of one of the sides it is vertical.