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jepler / cwwvb

CWWVB: A WWVB signal decoder in C++
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SDR input? #1

Open kevinelliott opened 2 years ago

kevinelliott commented 2 years ago

Can IQ or audio output from an SDR be piped into this in realtime? Or, do you have plans to extend the decoder support of SDR's such as RTL-SDR or SoapySDR?

jepler commented 2 years ago

That would be neat, but not at this time. I'd consider a pull request to add it. Many SDRs and antennas are not designed to receive down to the 60kHz frequency of WWVB.

I have an Airspy HF+ and loop antenna I picked up specifically in the hopes of learning this but it remains beyond my understanding level for now. (listening with gqrx, the 60kHz WWVB amplitude signal can be heard clearly at most, where I am 700km east of the transmitter)

Besides simply getting the signal into CWWVB in a useful way, SDRs would seem to introduce an indeterminate amount of time delay, though the delay could almost certainly be calibrated away.