[Pete Juliano, N6QW] built a 20 M QRP CW transmitter using just a handful of parts. That in itself will not raise any eyebrows, until you find that he built it using one of the very first RF ...

Carlson] bought a Globe Scout Model 40A ham radio transmitter at a hamfest ... were two little modules that were precursors to hybrid circuits (which were precursors to ICs) that were often ...