[Antennas] Feeding vertical triband dipole

Mon May 25 22:08:32 EDT 2009

I wonder if someone can suggest the way to decouple feeder from vertical 
triband dipole. The dipole is 20-15-10 sleeve feed dipole which I need to 
feed with 50 ohm coax. The feeder cannot be made leaving antenna at 90 
degrees for some reasons. In fact feeder will go down along the mast (and 
one of the shoulders of the dipole). Is there anything I can do to decouple 
feeder from the antenna. As I understand single balun at the feed point 
would not be enough here.
73, Igor UA9CDC 