Good question, I think the plans might still be at my mother's house in havana , no reason for her to throw anything away of course. Will have to ask her to look for it next time I call her and wait until someone comes from Havana. In general is cheaper in NA just to buy one than to build it one's self. At such high frecuencies even the spacing between the printed circuit elements is critical, almost everything is critical. Small transistors can at least go through cuban customs , a UHF amplifier , in most cases no way!. So we had no choice, over here is different.

Think about it even between building a Gray Hoverman antenna or buying a cheap chinese knockoff antenna for 25 cad that also works most people find it easier to do the later.