tag:blogger.com,1999:blog-8234406140077819810.post2207452542908958253..comments2024-03-18T08:04:08.364-04:00Comments on Retrotechnologist: 1:1 BALUN: NO LANGUAGE BARRIER FOR RADIO HAMSRoberta Xhttp://www.blogger.com/profile/09956807794520627885noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-8234406140077819810.post-36989684536852718522013-03-03T16:25:51.626-05:002013-03-03T16:25:51.626-05:00The real trick is making the balun as a transmissi...The real trick is making the balun as a transmission line al la Sevick, then the ferrite is there for the ride mostly so it's less critical but it still has e to have enough series<br />reactance to break the ground return path.<br /><br /><br />For a 1:1 the w4du form (choke on a rope) style of ferrite balun is usually easiest for 1:1 apps and pretty cheap. I make them using FT37-43 on 10 inches of .195 teflon coax (rg series).<br /><br /><br />Eck!Eck!https://www.blogger.com/profile/13890237094647111653noreply@blogger.com