Ferrite Baluns John W6NBC
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. John has previously given us several very interesting presentations.
https://w6nbc.com/
https://www.qrz.com/db/W6NBC
https://coil32.net/online-calculators...
Please go to https://w0tx.org/meet for our live google meet and to chat.
0:00 Intro
6:58 Balun basics
16:24 Balun design tools
19:24 3 Steps to design a balun
21:59 Pick a toroid
30:14 Find inductance
33:42 Calculate windings
38:42 Recap
40:43 Coax balun
43:11 End/Q&A