de WB2CPN I thought a BALUN was a Transformer. No matter how they are drawn, they both have Primaries and Secondaries. The term Windom is getting far-fetched. The Windom was a half-wave dipole, fed with a single wire at the 600 Ohm point off center. Transmitter feeding the single wire saw a 600 Ohm Z. Un-Confuse me. 73 Clete