On Saturday 29 May 2010, Veronica Merryfield wrote:
Regarding to
station clocks I guess they are synced by radio and not by
the power line. In Parma there the clocks might be heritage-protected ;)
and stills synced by the power line frequency.
The ones I have visited have two clocks, one on the power line and one
atomical. The control systems have the same thing, so they say, but when
talking through the running of the station it seemed much of that sort of
control is manual.
The significance here, I was surprised to see 100.0hz if it was mains
bourn.
That is because the 50hz is full wave rectified, becoming 100hz and
harmonics thereof because that waveform is not a sin wave.
Vrnc
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