PAPABET77: Bones Season 6

PAPABET77 One such machine had 600 pole pairs in the stator winding, and the rotor was driven at 2170 RPM, for an output frequency near 21.7 kHz. Because of the limits of the number of poles and rotational speed of a machine, the Alexanderson alternator is capable of generating transmission frequencies up to around 600 kHz in the lower Medium wave band, with shortwave and higher frequencies being physically impossible. The Alexanderson alternator followed Fessenden's rotary spark-gap transmitter as the second radio transmitter to be modulated to carry the human voice. In addition, continuous waves could be modulated with an audio signal to carry sound. Alexanderson alternators were used to produce radio waves in the very low frequency (VLF) range, for transcontinental wireless communication.|Value in a Supercar?