Sold for:
16,800 CHF

Master Clock System Patek Philippe, Genève, Model L4011. Made circa 1975. Notes The three clock units measure the time separately. Each one is equipped with a quartz-crystal oscillator and electronic dividers. The results are compared in the control unit. If one of the clock units shows a difference, it is automatically switched off. To increase precision the clock system is synchronized each second by the time signal from the Prangins observatory, near Geneva.The radio station with the call letters HBG, located in Prangins, near Geneva Switzerland, is the official Swiss broadcaster of encoded time signals. The location of the antenna is: 46 degrees 24' North, and 6 degrees 15 ' East. It broadcasts at the exact frequency of 75 kHZ, and under good conditions its signal can be received at a distance of up to 1500 kilometers, covering most of continental Europe. The signal is processed by automatic radio clocks to display the exact time.


Antiquorum

Auctioneer:
Antiquorum

Date:
2009-03-29

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