[GreenKeys] Frequency deviations in Continental Europe including impact on electric clocks steered by frequency

[drlegendre .]

"If it worries folk perhaps they should stick with the older models that
had DC motors and mechanical governors!"

Could someone who is familiar with these models let the rest of us know
what the acceptable speed deviation is for them? I'd wager it's more than
the greatest short term error for the 60Hz mains.

On Tue, Mar 6, 2018 at 9:09 AM, Bob kb8tq <kb8tq at n1k.org> wrote:

> Hi
>
> Most schools / factories / train systems, even back in the 1950’s ran on a
> “master clock”
> system rather than a bunch of independent clocks. The issue was not so
> much line
> frequency as a power outage. Going around to a bazillion clocks to re-set
> them all to the
> correct time cost a lot of money.
>
> Back when I was in school (yes school had been invented that far back) the
> ham radio club
> guys noticed that WWV and the wall clock had an interesting relationship.
> The wall clock
> drifted during the day and between 4 and 5 pm went faster (or I suppose
> slower) to eventually
> match up with WWV by 5 pm. The largest deviation that I recall seeing was
> around 30 seconds.
>
> Bob
>
> On Mar 6, 2018, at 10:01 AM, Nick <creativegardening at hotmail.com> wrote:
>
> I talked to my sister in Hamburg, Germany this morning. Yes, some clock
> systems are affected but everything else is running smoothly.
>
> Just wondering how airports, train stations, governments, etc. are
> handling the situation. Also wondering about high-tech time clocks in large
> factories and so forth - there is a possibility that the timing problem
> could reflection on payrolls. Are workers screwed now?
>
> Who knows  !
>
> Nick  -  N0NCQ
> i-Telex  212503
>
>
>
> Sent from my T-Mobile 4G LTE Device
>
>
> -------- Original message --------
> From: Paul Heller <paul0926 at comcast.net>
> Date: 3/6/18 3:55 AM (GMT-05:00)
> To: Greenkeys <greenkeys at mailman.qth.net>
> Subject: [GreenKeys] Frequency deviations in Continental Europe including
> impact on electric clocks steered by frequency
>
> It seems power in Europe is fluctuating. Has anybody’s teletypes in Europe
> been affected?
>
> https://www.entsoe.eu/news-events/announcements/
> announcements-archive/Pages/News/Frequency-deviations-in-
> Continental-Europe-including-impact-on-electric-clocks-
> steered-by-frequency.aspx
>
>
> Paul
> W2TTY
>
> ITTY: HTTP://INTERNET-TTY.NET:8000/ITTY
> <http://internet-tty.net:8000/ITTY>
> AUTOSTART: HTTP://INTERNET-TTY.NET:8030/AUTOSTART
> <http://internet-tty.net:8030/AUTOSTART>
> EUROPE: HTTP://INTERNET-TTY.NET:8040/EUROPE
> <http://internet-tty.net:8040/EUROPE>
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