I built this simple air cored balun in next to no time. No need to worry about toroids etc. It works from 3 to 30 mhz and handles 200 watts easy. If you use thicker wire it will handle a cool 1KW.
by baulinescraftguild
by Jennies Garage
by Make Your OWN Creation
by Ranu's Craft
by manion3222
by FiberglassSite.com
by madeehas_mehndi