>>10957872antenna should probably be bigger, rochelle salt isn't that great of a speaker, a contact galena diode won't be very stable in practice, but yeah the principle's legit. Using microwaves would work pretty well for transmission, but then you'd need line of sight. I don't feel like running the numbers on the current antennas right now, go ask someone else to do that. The drone in the current chapter is probably bullshit though.