In Southern California Edison's region I know that 60Hz used as a time reference has been unstable in possibly the last 10+ years. I have found that depending on whether in the summer clocks which use this reference tend to run slower, and in the winter they run faster.
Have you noticed that in some way it between running fast or slow the gain/loss combination averages out over the course of the year? Don Resor -----Original Message----- From: Thomas D. Erb <t...@electrictime.com> Sent: Saturday, August 28, 2021 4:16 AM To: time-nuts@lists.febo.com Subject: [time-nuts] Subject: Re: Leviton VTP24 Is this Time Accurate enough? - Line Frequency and TXOs We have been running long term tests on a TXO chip we use for time keeping vs line frequency vs NIST time. Over 4 years the TXO is within 4 minutes Line Frequency 9 minutes The TXO is well within specification - and the line frequency is off because we lose power in our leafy Boston suburb a lot - and the control fall over to an older time keeping chip. Thomas D. Erb p: 508-359-4396 f: 508-359-4482 a: 97 West Street, Medfield, MA 02052 USA e: t...@electrictime.com w: www.electrictime.com Tower & Street Clocks Since 1928 _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.
