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1. Radio technology
Cutting edge chronography.
5,000 years have now passed since the advent of chronography. Start ing
with sundials and water clocks, advancing to mechanical clocks in the 13th
century and then followed by quartz watches, chronography has now culmi-
nated in the radio-controlled watches by Junghans.
Radio-controlled watches by Junghans are always accurate and never require
adjustment if reception conditions are adequate. Junghans radio-controlled
watches are perfectly accurate because they are linked to the most accurate
clocks in the world by radio signals.
In Europe, this is the caesium clock of the German National Metrology
Institute (Physikalisch-Technischen Bundesanstalt, PTB) in Braunschweig.
In North America, this is the caesium clock of the U.S. Department of
Commerce, the National Institute of Standards and Technology (NIST) in
Boulder, Colorado.
In Japan this is the caesium clock of the National Institute for Information
and Communication Technology, an association of the government office.
Your Junghans Mega 1000 radio-controlled watch is able to automatically
receive the radio signals of the following time signal transmitter stations:
– DCF77 in Mainflingen (24km south-east of Frankfurt am Main) for Europe,
– WWVB in Fort Collins, Colorado (USA) for North America
– JJY40 on Mount Ohtakadoya (near Tokyo in north-east Japan) for Japan
– JJY60 on Mount Hagane (in south-west Japan) for Japan,
the East coast of China (Shanghai),
for South Korea and parts of Taiwan.
