Silvercrest wireless doorbell

 24.11.2018
Silvercrest wireless doorbell

Silvercrest STK 36 B2 version 12/2017 (433 MHz OOK) 




I recorded IQ file with SDR# (433.946 MHz 0.25 MS/s) and with GNU Radio demodulated OOK and saved demodulated signal to wave file.



Investigating the wave file with Audacity

Transmitter sends this sequence 50 times





L,L,L,L,L,S,L,L,L,S,S,L,S,S,L,L,S,L,S,S,L,S,S,S,S
Length of shortest high peak is approx 31 samples, 1 / (sample_rate / 31) ~= 1612 bps.

tbc ....







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