wrote in message
oups.com...
greetings,

can someone direct me on the ways driven element of a yagi is attached
to a boom. can a driven element (folded dipole or ordinary
dipole)electrically connected to a boom or not? what will be the
effect? or can i use wood as a boom? can someone also give me some
formula on yagi design (length, spacing etc)

You can make the boom out of anything that will be mechanically strong
enough. If it is conductive or not will have an effect on the lengths of
the elements. It will also change if the elements are insulated or not.
Depending on the design of the driven element element, it may or may not be
connected to the boom.

You really need to just find the type of beam you want and copy it. If you
find one you want and the frequency is diffeant , you can scale it, but you
must be sure to scale all the parts, boom diameter, element diameter and all
the other elements.