Winding a 1:4 Current Balun with 15 turns. Post #1224.
If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=IR-8T0QjUjM. A 1:4 current balun is a handy device if you use 450 ohm ladder line, 300 ohm television twin lead, or homebrewed 600 ohm balanced line to feed your antenna. In this video from N7JFP, we see how to make a simple 1:4 HF Current Balun with 15 turns per side. This balun uses a T-130-2 toroid and 18 gauge copper wire. N7JFP says this is a low power device (around 5 watts) suitable for 20 and 40 meters. For the latest Amateur Radio news and information, please visit these websites: http://www.HawaiiARRL.info. https://oahuarrlnews.wordpress.com. https://bigislandarrlnews.com. https://paper.li/kh6jrm/1430289353 (Amateur Radio News & Information). http://www.arrl.org. http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated every Friday afternoon). Other sites of interest: Hawaii Science Digest (https://paper.li/f-1476234