RF Signal Generator
This is an RF Generator that was invented around 1912. This was meant to have all of the radio receivers all fall in line. This was focused on having people be able to connect with AM Radio Stations of about 5 different ranges. The first range is, Range A which covers a radio frequency of 150 KHZ (KilaHertz) - 500 KHZ. Range B went about 350 KHZ to 1MHZ (mega hertz). Range C was about 750 KHZ- 2.25 MHZ. Range D was about 1.6MHz - 5MHz. Lastly Range E was about 3.5MHz - 12MHz.