I am going to give a talk on Radio technologies this summer at a museum. A spark gap transmitter, a Radiola 3 and a Radiola 17 will be demonstrated. I have these. I may be able to get a Radiola I out of someone's attic. Its a crystal set.
I will go through the work of Armstrong on regenerative radios followed by a demo of the regenerative 3, of tuned radio frequency and demo on the 17, and of superhetrodyne on a more modern radio. Each set is active and will be played. I will get into FM and digital radio. The museum has a 1920's radio transmitter KDKA and they will show that. The talk will wind up with some thought of the control of the natural forces other than the electromagnetic. I hope someone shows up. I will video and post this summer. Frank
