What is a Windom antenna?

A Windom antenna is a multi-band wire antenna that can typically be used on different shortwave bands without the need for an antenna tuner. It consists of a longer emitter that is powered at one end and a shorter one that serves as a tuned counter electrode. The feed is usually carried out unbalanced via the so-called open feed line or with a balun 1:4 or 1:6 (balanced transformer) and a coaxial cable at a point that is not in the middle but in a certain relationship to the length of the radiator. This design allows for flexible application and makes the Windom antenna with only 2 branches, one on each side, particularly popular with radio amateurs who want to work on different bands without much effort.