7th Apr 2020, 12:22 am
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#209
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Dekatron
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,642
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Re: Electric clocks running slow warning
According to this site the average frequency for the past 24 hours was 49.98Hz
http://mainsfrequency.uk/fm-last10m
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