The book Crystal Sets to Sideband has discouraged frequencies above the low VHF band due to all of the problems with wires acting as inductors and difficulty on a stable Variable frequency Oscillator.
My goal is to build a 421 MHz 10 watt CW signal.
Would it be possible to build this out of discrete components like transistors, inductors, etc.?
Or is the frequency too high that it just isn't practical without microchips with tiny little traces to keep the lead inductance down?