Junghans MEGA alarm (type 150 / 1030.00, ca. 1987)
Short user manual.
I did not find anything on the net, and have
mislaid my manual, so I tested things out by
myself! © Thomas, OH6NT - 2016
Snooze-button (5 mins.)
Pressing this more than 6
seconds resets ALL settings!
Alarm time setting
Press “set” once, set
alarm time with +
Postpone alarm
for 24 hrs when it
sounds (to same
time next day).
Setting time zone: (If you do not change the time zone, the clock will show the time UTC+1)
- Press “set” button and keep it depressed. (AL blinks instead of day)
- Press “24 h off” until hour number starts to blink.
- Let go of the “set” button, but keep pressing “24 h off”.
- Set your difference from German time (UTC-1) time with “+” and “– “ buttons.
- Let go of the “24 h off” and clock should show actual time at your location.
NB! This can only be done when time is running, i.e. clock actually shows time.
Setting display language:
- Remove battery
- Press and hold “+” for English, “– “ for French or nothing for German day display
- Insert a fresh AA-size 1,5 V battery, observe polarity.
- Let go of the button you are holding. The display should show E, F or D accordingly
NB! This can only be done when battery is inserted!
General verdict:
This is a very reliable clock, I have had mine for 30 + years. As long as you live closer than about 2000
km from the DCF77 transmitter in Mainflingen in Germany, the clock will synchronize every hour with
the atomic master clock in Braunschweig (depending on placement and radio wave propagation).
A number might show up below the day indicator; that tells how many times the synchronization has
failed. The clock tries synchronization every hour at 58 minutes and changes automatically between
summer and winter time.
An alkaline battery should last for a couple of years. Test the battery with a short push on the green
“Snooze”-button; if the display is properly lit up, the battery is good. If the light is weak, exchange the
battery observing the polarity. More info on DCF77 here: https://en.wikipedia.org/wiki/DCF77.
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