I was a Navy ET back in the stone age, when Frank Morris and crew broke out of Alcatraz I was attending the Navy electronics school on Treasure Island within sight of the rock.
Tube theory,,those were the days..worked on shipboard electronics when I got out of the Army..All my solid state experience came from a NRI course and working on boats..met alot of people,retired from it in ‘04,but everytime I talk aboout elctronics I want to get back into it.,,taught me alot..