3130
1.1. Usable time signal transmitters
Your Junghans multi-frequency radio-controlled watch is capable of auto-
matic reception of time signals from the following transmitters:
– DCF77 in Mainflingen (Frankfurt am Main) for Europe
– WWVB in Fort Collins, Colorado (USA) for North America
– JJY40 on Mount Otakadoya (near Tokyo in the North East of the coun-
try) for Japan
– JJY60 on Mount Hagane (in the South West of Japan) for Japan, the
East Coast of China (Shanghai), South Korea and parts of Taiwan
With good reception, the Junghans multi-frequency radio-controlled watch
thus always shows the perfectly correct time within any of these four trans-
mission areas. The watch automatically synchronises itself overnight with
the DCF77, WWVB, JJY40 and JJY60 time signal transmitters. If reception fails
due to interference (e.g. stormy weather, electrical appliances or dimmer
switches), the Junghans multi-frequency radio-controlled watch will launch
renewed attempts to pick up the signal fully automatically the following
night. It is also possible to use a ‘transmitter call’ to synchronise the time
manually, for example at a location where reception conditions are better.
The latest time information received is stored in a time memory. This origi-
nal time continues to be kept using a high-precision 32kHz quartz move-
ment until the time is synchronised again. The radio-controlled time syn-
chronisation of your Junghans multi-frequency watch not only ensures an
always precise display of the time, but – given good reception – also takes
care of switching from winter to summer time, and vice versa, fully automa-
tically (at night). Please note that this does not apply to the USA’s WWVB
time signal trans mitter (see section 3 – Automatic time synchronisation). If
you travel to a country in a different time zone, the time adjustment facility
on your Junghans multi-frequency radio-controlled watch makes it easy to
switch to the appropriate local time.
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