On Apr 8, 2010, at 11:23 AM, [email protected] wrote:
> Message: 8 > Date: Thu, 8 Apr 2010 11:22:58 -0700 > From: "Rick Karlquist" <[email protected]> > Subject: Re: [time-nuts] Yukon Energy causes time sync problems > To: "Discussion of precise time and frequency measurement" > <[email protected]> > Message-ID: > <[email protected]> > Content-Type: text/plain;charset=iso-8859-1 > > This reminds me of something a power company engineer > once told me: > > "High frequency" is 61 Hz. "Low frequency" is 59 Hz. I remember being in the powerhouse at Bonneville Dam on the Columbia River in the mid-fifties and seeing round-bezel vibrating reed frequency meters with 5 reeds in 0.5Hz steps -- 59, 59.5, 60, 60.5, 61. The square ends of the reeds were painted white to make them easier to see, and they had about a 1/4" p-p motion at center freq. Don't know if they were part of a control loop or just monitors. Tallies well with what the engineer told Rick. Dick Moore _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
