I have collected a burst signal from a radio device using an RTL-SDR and gnuradio and demodulated the FSK, but am having trouble deciphering what the line code is.

Signal is at 151.3MHz

Here is the signal in inspectrum Signal in inspectrum

Here is the signal zoomed in Zoomed in signal

You can download the raw captured burst. I am viewing it using inspectrum. Also available is the demoded signal

I'm expecting around 12 bytes, after the preamble, that are transmitted from a sensor (that is from a third party).

  • \$\begingroup\$ Telling which frequency band or better exact frequency you was recording would help a lot! \$\endgroup\$ – Curd Jun 29 '18 at 11:46
  • \$\begingroup\$ Are you searching for aliens? \$\endgroup\$ – Andy aka Jun 29 '18 at 12:13
  • \$\begingroup\$ @Curd I've updated the post to include the frequency \$\endgroup\$ – ElDog Jun 29 '18 at 12:15
  • 3
    \$\begingroup\$ @Andyaka I'm searching for 12 bytes. \$\endgroup\$ – ElDog Jun 29 '18 at 12:15
  • 1
    \$\begingroup\$ Yes, of course. A bit can be anything. What I want to say is: you need to give/obtain more information. We can do only a limited about of intelligent guessing but not clairvoyance. \$\endgroup\$ – Curd Jun 29 '18 at 14:48

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