Transcription of Balun : What They Do and How they Do It - EZNEC
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Balun : What They Do and How they Do It - EZNEC
Bal uns: What They DoAnd How They Do ltBy Roy lV. Lewallen,* IVTEL*5470 SW 152nd Ave., Beaverton, OR 97007I've always been a bit bothered by balunstsince I was never sure what they are supposed to dotlet alone hotv they might go about doing it. Themajority of articles deal with various ways ofbuilding and testing baluns, or the advantages ofone type over another, but almost never a word aboutwhen or why a Balun is neeessaryr if at all. Likemost amateurs, there have been few occasions when Ihave been able to tell if a Balun has any effect onan antenna system, and when it has, the effecthasn't always been good! The turning point came whenI was trying to measure the resonant frequency of afolded dipole through a one-vravelength coaxial bridge null varied a great deal as I moved myhand around the coaxial cable, or if the line orbridge was moved.
Created Date: 3/16/2005 4:45:42 PM
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