[time-nuts] DCF77 question

ehydra ehydra at arcor.de
Thu Oct 13 13:01:33 UTC 2011

asmagal at fc.up.pt schrieb:
> "DCF77 marks seconds by reducing carrier power
> for an interval beginning on the second".
> This is not a good (Heaviside step) time marker.

The amplitude is carefully crafted to signal and transmit antenna.

> Is it possible to decode that signal by any very
> simple "on-my-shelf gear", as for instance a PC
> sound card,to recover a good seconds time mark?
> Do you know some software to perform the above task?

You need a wide-band sound-card like EMU0202 and SpectrumLab. This 
software contains the needed tracking software. A simple JFET or 
low-noise OpAmp as preamplifier for a 1 metres wire-antenna.

Go to Yahoo-groups:

- Henry


More information about the time-nuts mailing list