A crystal radio is a common enough science fair project, but the problem is, there isn’t much on anymore. The answer is, of course, obvious: build your own AM transmitter, too. AM modulation … ...

Selecting a new transmitter Dec 1, 2001 12:00 PM, By Hal Kneller, CPBE CBNT Solid-state technology has taken over the major AM broadcast transmitter manufacturers, and up to 40kW of solid-state power ...

It is extremely easy to make an AM transmitter with a single transistor or tube, but it is rather more difficult to make a good one.