First of all, sorry for the very late reply…

The module I used gives only a logic high or low value, depending on the signal the antenna receives. I think in your case there is some noise which makes the read of the logic level unreliable – for the same reason I used some basic noise filtering: sampling the value from the module a number of times (200 in my case) and then assuming the signal was high if the majority (75% = 150 samples) of it were high, otherwise low. See Line 143 of my code and the Noise section of this post for more details.

And regarding the other station – I don’t think that anyone else is allowed to broadcast on this exact frequency as this station is used all around Europe.

I’m almost certain that you have finished your project a long time ago, but I wanted to reply in any case.

Gabor

Could you help me understand why my exact the same module as yours is giving me more than one pulse per second as output?
Sometimes even 12 pulses per second.

What is wrong?
Is there another station that I somehow receive, other than Frankfurt?
I live near Manchester UK.

Thanks,
Robert.