Dr. Frank Brickle, AB2KT, was my guest in Episode 212, in August of 2018, five years ago.  He is both a musical composer and a technology expert. He earned a Ph.D. in Music from Princeton University and has been involved in computer science and signal processing since 1970. He was an early pioneer in development of Software Defined Radio for the US Government, and later by private industry, and was the Co-deleloper of PowerSDR software with Bob McGwier, N4HY.   Frank is also a classical music composer and has his written compositions performed worldwide. AB2KT is my QSO Today in this remastered audio version of the original interview.