IBM Masterclock

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Uploaded by on Nov 16, 2009

Thë sound of an IBM master clock every hour.
For some reasons my connected slaves are always 3 minutes behind the masterclock. Anyone who can help me?
See laso http://www.youtube.com/user/janl01#p/a/u/0/8XNmwORkAdc for a better vision.
Also wanted a manual for this clock.

More at http://www.langenbergjan.nl/

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Science & Technology

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  • I have an IBM slave clock, but I haven't powered it up yet. It's a square clock from the early 1950s that I got from the middle school near my house when they renovated a while back. I also know another school in my home town with IBM clocks, but they have a Simplex 6400 master clock system controlling the whole building.

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