On 9/29/2012 11:10 AM, ab2tc wrote: > So are you suggesting using a choke balun on both ends of the parallel wire > feedline?
Not just a suggestion, but a STRONG recommendation. But leave the word "balun" out of this sentence. It is a COMMON MODE CHOKE -- a section of parallel wire line wound around a lossy ferrite core that forms a very low Q resonant circuit. The parallel resistance at resonance is what chokes off common mode current. The word "balun" is highly confusing, because it is used to describe at least a half dozen very different circuit elements -- everything from tuned lengths of transmission line to actual transformers, to arrays of common mode chokes, to electronic circuitry to modulate baseband video onto CAT5 cable. . 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
