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Re: 77.5 kHz DCF77 time station (Germany)


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Posted by John Davis on November 02, 2022 at 01:23:57.

In Reply to: 77.5 kHz DCF77 time station (Germany) posted by Bruce WA1HGJ on November 02, 2022 at 00:16:28.

Congratulations, Bruce. If you can detect the absence of the time marker at second :59 of each minute, that would be enough to confirm it's DCF77.

That's one I enjoy receiving here in Kansas most any winter night, undoubtedly helped considerably by being remote from typical metropolitan noise sources.

Once you get acclimated to listening to sustained one-second pulses over a long enough, you could very well become adept enough to discern between a silence of 0.1 s versus 0.2 s. That's a 2:1 ratio, and falls within the range of normal speech syllabic rates. It sometimes presents as a mild, slow stutter-like effect in the timing of some of the silences.

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