Up to the time that I decided to build this radio from the March 2016 QST, I had never heard of the "mini-360 Buck voltage regulator!? I have built a few electronic kits recently and this was a new one for me!? I decided to search the Internet for more information on this component.? I found a great answer on YouTube that compares this regulator to the linear 3 terminal regulators that I am familiar with.? Give the link below if you are as curious as I was.? 73, KO8S, Karl