A small box has a switch for three bands — LW, AM, and SW ... and a pigtail with another 1/8″ jack. If your radio takes a 1/8″ plug for an antenna, that’s where you connect it.

[G3OJV] knows the pain of trying to operate a ham radio ... antenna, the unun has both sides unbalanced. You can see his explanation in the video below. The tiny hand-size box costs well under ...