Build Your Own 4:1 BALUN With Coax
Thank to Ralph Gable of "Electronics for the inquisitive experimenter" for this cheap and easy way to make a basic 4:1 BALUN.
Ralph takes you step-by-step through the design and construction procedures. Each step is thoroughly explained and demonstrated.
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=fG7ZpsjXRW8.
Here are a few comments from Ralph: