Hey Ken, great read as always. I wonder if in future you would consider doing an overview of the various early radio chips and their evolution. I recall recently reading some HAM projects and understanding that a lot of the later radio chips were clones of earlier designs. Given your suggestion that this earlier period of integrated radio innovation is 'low hanging fruit' in terms of RE-friendliness, it should be an interesting read and I'm sure a very large number of radio enthusiasts would love to see your insights.

It would be cool to look at more early radio chips, but I have a lot of other projects to do first...