I am seeking to make an FM transmitter totally from scratch. By "from scratch", I mean not using any pre-made circuits or any doped semiconductors. I just want to use wire, batteries, etc. So basically my question is: Is it possible to make a sine wave oscillator without the use of any transistors or amplifiers? Capacitors, inductors, etc. are no problem, but I can't make doped silicon from scratch. So the oscillator would not be able to include: transistors, amplifiers, diodes, inverters, etc. Is this possible? Any help would be greatly appreciated. Thanks!