11 meter DDRR schematics wanted.

[8113 Northern MN]

Been looking into the whole DDRR craze for a friend whom is a trucker. He is looking for a "directional" antenna with higher gain then your standard "trucker" antenna. We have been discussing the option of DDRR but i am unable to find a schematic for 11 meter....only seeing 2 meter stuff. Anyone know where I could find one?

 

[Mustang 131]

You need metal under that antenna for it to work. 007nj has a few "roof rack antenna's" new in a box. They made it back in the 80's and used it on his minivan. Never worked as good as a Wilson for local talking.

 

[8113 Northern MN]

oh im aware that you need metal!