25 Hz power (DC too)
wb5mmb at pobox.com
Tue Feb 26 17:51:44 CST 2008
25 Hz almost but not yet gone.
see page 21 of 24.
Last DC service gone?
40Hz ? ( we need a IEEE member to give us a report on this article,
Hydro plant in NY state running 40 Hz generators )
More information about the Tacos