Few hams have a clue of how to select a toroid and wind it to make a 1:1, 4:1 or 9:1 balun and the well-known radio books can be confusing. This presentation shows the three very easy steps to successful ferrite toroid design with very little math and a free on-line calculator.
Bio: John is a native of Los Angeles, CA and was first licensed in 1965. He has a Bachelor’s degree in physics from Oregon State University and, before he retired, was a broadcast television engineer and instructor. John is a ham magazine author and has published more than 25 articles to date in QST. He is active on HF, VHF, UHF – SSB, FM, digital modes, ham satellites and his other hobbies include steam railroading and pipe organs. John is married to KF6OEB and has three children and 12 grandchildren. John’s website is www.w6nbc.com